Publication


Sr. No Date Title of Publication Description Attachment
1 16/04/2024 Evaluation of Cotton (Gossypium hirsutum L.) Varieties/Genotypes for Jassid, Amrasca biguttula biguttula (Ishida) Resistance under Rainfed Conditions Host plant resistance is an important component of integrated pest management strategy for jassid resistance. Evaluation of germplasm to identify the stable source of resistance is a predominant step in any resistance breeding programme. In this study, screening of Gossypium hirsutum cotton varieties/genotypes against jassid, Amrasca biguttula biguttula (Ishida) was carried out under rainfed conditions during kharif seasons of 2016-17, 2018-19 and 2019-20 at Regional Cotton Research Station, Navsari Agricultural University, Maktampur farm, Bharuch, Gujarat. Among thirteen cotton varieties/genotypes screened, none of variety/genotype was categorized as resistant by considering jassid population as well as Jassid Resistance Index. Six cotton varieties/genotypes viz., NH-615, GBHV-201, GBHV-209, GBHV-204, G.N.Cot-26, GBHV-206 and two checks i.e. DHY-286 and NDLH-1938 were categorized as moderately resistant based on maximum jassid population ranged from 4.40 to 7.40 jassids/3 leaves. Three cotton varieties/genotypes viz., Suraj, Bunny BG II and Bunny Non Bt were categorized as susceptible with population of 12.50 to 13.70 jassids/3 leaves. The cotton variety G.Cot-16 (16.70 jassids/3 leaves) and check DCH-32 (24.60 jassids/3 leaves) were categorized as highly susceptible to jassids. Five cotton varieties/genotypes viz., NH-615, GBHV-201, GBHV-204, GBHV-209, G.N.Cot-26 and two checks i.e. DHY-286 and NDLH-1938 were categorized as moderately resistant based on maximum Jassid Resistance Index in range of 1.10 to 2.00. Only the genotype GBHV-206 was found susceptible with 2.20 JRI. Four cotton varieties/genotypes viz., G.Cot-16, Bunny BG II, Suraj, Bunny Non Bt and check DCH-32 were categorized as highly susceptible to jassid based on maximum JRI of 3.10 to 4.00. Overall five varieties/genotypes of G. hirsutum cotton viz., NH-615, GBHV-201, GBHV-209, GBHV-204 and G.N.Cot-26 were found moderately resistant to jassids under rainfed conditions. Download
2 16/04/2024 Assessment of bioagents against cotton diseases under South Gujarat of India Cotton (Gossypium spp.) is one of the most important economic products of the group of fibres due to volume and value of production. Its cultivation is also of great social importance, due to the number of jobs generated directly or indirectly. The fibre, the main product of cotton has many industrial applications. The manufacturing of yarn for weaving of various kinds of fabrics, cotton batting for hospital use, felt clothing, blankets and upholstery, photographic films and plates for radiography among others. Here in this experiment, different bioagents were evaluated against the cotton foliar disease. This experiment engage the total nine treatments including control from which, treatment T5 (14.50 PDI) (Seed and soil application Pf CICR i.e., seed application: 108cfu/g @10g per kg of seed soil application: 2.5 kg/ha at 30 and 60 DAS) followed by T8 (18.33 PDI) significantly recorded minimum bacterial leaf blight infection in comparison to the treatment T9 i.e. control (42.33 PDI) in RCH 2 BG II hybrid. For Alternaria leaf spot disease, treatment T8 (8.17 PDI) (Seed treatment with Pseudomonas fluorescens CICR (2 x 108cfu/g) @ 10 g/kg seed + soil application of Trichoderma viride TNAU1 (2 x 106 cfu/g) @ 2.5 kg/ha in 250 kg of vermicompost and sprays of Kresoxim methyl (0.0443%) followed by Captan 70% + Hexaconazole 5% WP @ 1.5 g/l) were recorded significantly minimum Alternaria leaf spot disease in RCH 2 BG II hybrid as compared to the T9 i.e. control (19.33 PDI) followed by T7 (9.83 PDI) and T3 (10.50 PDI) treatment. The highest seed cotton yield was recorded in the treatment T5 (2606.00 kg/ha) followed by treatment T8 (2335.33 kg/ha) and treatment T7 (2275.67 kg/ha), respectively. Download
3 08/06/2023 Knowledge of SHG women members regarding nutrition in Surat district of Gujarat state The study was conducted in Surat district of Gujarat State to know the level of knowledge about nutrition among the SHG women members. Three talukas were selected purposively where SHG are formed under Mission Mangalam Yojana. From each taluka four villages were selected purposively where SHGs are formed from at least last three years. Ten SHG women members were selected randomly from each village. Thus total sample size was 120. The data were tabulated, classifi ed and analyzed with appropriate statistical tools. The result revealed that the majority i. e. 65 per cent of the respondents had medium level of knowledge about nutrition. An education, occupation and source of information showed signifi cant and positive correlation with the knowledge regarding nutrition among SHG women members. Download
4 08/06/2023 Effect of environmental factors in relationship to Bacterial leaf blight (BLB) disease development under South Gujarat of India Cotton (Gossypium spp.) is one of the most important economic products of the group of fibers due to volume and value of production. Its cultivation is also of great social importance, due to the number of jobs generated directly or indirectly. The fiber, the main product of cotton has many industrial applications. Examples are manufacturing of yarn for weaving of various kinds of fabrics, cotton batting for hospital use, felt clothing, blankets and upholstery, photographic films and plates for radiography and others. The Main objective of present study is to study the progress of the Bacterial blight disease of cotton (BLB), caused by Xanthomonas campestris pv. malvacearum (Smith) Dye, inrelation to the weather factors. Itis a common disease affecting the growth, development and the yield of cotton crop under this region. Afield trial was laidto study and to determine the influence of environmental factors viz., rainfall, rainy days,temperature and humidity on development of disease. the disease was first appeared in the third week of July (2.0 % PDI) i.e. in 29th Met. week. The incidence of Bacterial blight disease (BLB) was noticed from 29th to 51st standard week with the maximum disease intensity in the second week of October (42.5% PDI) i.e. in 41th Met. week.Bacterial leaf blight (BLB) has positive correlation with the maximum temperature and sunshine hour for the disease development. Download
5 08/06/2023 Evaluation of different fungicides against boll rot and foliar diseases of cotton under South Gujarat of India Cotton (Gossypium spp.) is one of the most important fiber crops playing a key role in economic and social scenario of the globe. It provides employment and sustenance to a population of nearly 42 Million people, who are involved directly or indirectly in cotton production, processing, textiles and related activities. Looking to the experiment, different fungicides were evaluated in cotton crop under field conditionagainst the boll rot and different diseases. Total seven treatments including control were evaluated in this trial from which, treatment T4 (24.17 PDI) followed by T5 (25.67 PDI) recorded minimum Bacterial leaf blight infection in comparison to the treatment T7i.e. control (39.50 PDI) in RCH 2 BG II hybrid.For Alternaria leaf spot disease, treatment T4 (5.33 PDI) were recorded significantly minimum Alternaria leaf spot disease in RCH 2 BG II hybrid as compared to the T7i.e. control (17.67 PDI) followed by T5 (8.17 PDI) and T6 (9.00 PDI) treatment.The lowest boll rot incidence was observed in the treatment T4 (13.83 PDI) followed by the T5 (16.17 PDI) and T6 (17.33 PDI) treatment as compared to the control T7 (29.83 PDI).The highest seed cotton yield was recorded in the treatment T4 (2682.00 kg/ha) followed by treatment T5 (2427.00kg/ha) and treatment T6 (2308.67kg/ha), respectively. Download
6 08/06/2023 Fal Pakoni Praktrutik Kheti Fal Pakoni Praktrutik Kheti Download
7 08/06/2023 Saakbhajini Praktrutik Kheti Saakbhajini Praktrutik Kheti Download
8 08/06/2023 Prakrutik krushi na adhaar stambho Prakrutik krushi na adhaar stambho Download
9 08/06/2023 Prakrutik Krushi Prakrutik Krushi Download
10 08/06/2023 Matanu Dudh- Kudrat nee anmol bhet Matanu Dudh- Kudrat nee anmol bhet Download
11 08/06/2023 Pashuaahar Pashuaahar Download
12 08/06/2023 Sailej- Lilo Ghascharo Sailej- Lilo Ghascharo Download
13 05/08/2022 Scientific cultivation of soybean Scientific cultivation of soybean Download
14 05/08/2022 Banana wilt Banana wilt Download
15 05/08/2022 Scientific cultivation of sugarcane Scientific cultivation of sugarcane Download
16 05/08/2022 Scientific cultivation of paddy Scientific cultivation of paddy Download
17 05/08/2022 Scientific cultivation of gram Scientific cultivation of gram Download
18 05/08/2022 Scientific cultivation of mungbean Scientific cultivation of mungbean Download
19 05/08/2022 Balance diet Balance diet Download
20 05/08/2022 Value addition in tomato Value addition in tomato Download
21 05/08/2022 Scientific cultivation of cucurbitaceous vegetables Scientific cultivation of cucurbitaceous vegetables Download
22 05/08/2022 Scientific cultivation of brinjal Scientific cultivation of brinjal Download
23 05/08/2022 Amla Value addition in Amla Download
24 06/04/2022 Effect of growing media on seed germination of red sanders (Pterocarpus santalinus Linn. f.) The present investigation was undertaken to study the “Effect of growing media on seed germination of Red Sanders (Pterocarpus santalinus Linn. f.)” at Net House, College of Forestry, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat, India during 2018-19. The different proportions of media (Soil: Sand: FYM) in dual and triple combinations were used as a treatment for sowing seeds. The experiment was laid out in Completely Randomized Design (CRD) which consists of 8 treatment combinations and three repetitions. The result showed that the minimum days for germination viz. FDG (7.67 days), LDG (15.67 days) and MGT (11.74 days) were recorded in media containing Soil + Sand (1:2) i.e. T3. However, TSG (7.33 days) was observed minimum in media containing Soil + Sand (1:1) i.e. T1. The media containing Soil + Sand + FYM (1:1:2) i.e. T5 increased germination (78.33 %), rate of emergence (6.21 %/day), germination energy (63.33 %) and germination index (116.67). Moreover, survival (75.00 %) was observed maximum in T8: Soil + Sand + FYM (2:1:2). Lower values of above all germination parameters were recorded in Soil + Sand (2:1) i.e. T2 Download
25 06/04/2022 BIODIVERSITY OF SOIL ORIBATID MITE (ACARI : ORIBATIDAE) IN DIFFERENT AGRO-ECOSYSTEMS Biodiversity of oribatid mites were investigated in different disturbed and undisturbed soil of orchards, vegetables, field crops, greenhouse, forest plants, organic farm, bio-diversity park, spices crops, vermicompost bed, ornamental and medicinal plants in Navsari Agricultural University campus during the year 2018 and 2019. Among 3 suborders Brachypylina contributed 66 per cent of total species recorded in Navsari Agricultural University campus. Total 8 species of the suborder Brachypylina were recorded on different agro-ecosystem and fallow land. Out of all 12 species, the proportion of S. curvialatus was highest (20.67%) and was followed by Scheloribates sp. (15.77%), O. kuehnelti (14.95%), S. huancayensis (10.21%) and J. kuehnelti (10.05%). Maximum numbers of oribatid species were recorded during August-November and moderate population was observed in June-July months during the survey period in different agro-ecosystems. The value of Shannon index of diversity for oribatid mites at Navsari Agricultural University campus is 2.2340 and value of Simpson’s index is 0.1253, evenness of oribatid mite species was 0.6650 while, species richness is 12. Download
26 06/04/2022 Study of Heterosis Breeding for Processing Characters in Tomato (Solanum lycopersicum L.) In the present study total 40 genotypes (11 parental genotypes, 28 F1 hybrids and one commercial check- Abhinav) were evaluated during 2014 to 2015 in order to estimate the extent of heterosis and quality traits like, TSS, lycopene content, ascorbic acid content (vitamin-C), average pulp content, pulp: skin ratio, solid: acid ratio and titrable acidity. In which, significant differences among genotypes were obtained for all the traits. In the present investigation, mid parent heterosis ranged from -45.31 to 182.20 %, better parent ranged from -53.23 to 127.18 % and standard heterosis -0.79 to 295.83 % for fruit yield. The maximum standard heterosis recorded by cross JTL-12-12× JT-3 was 295.83 %, followed by NTL-1 × AT-3 (273.39 %), JTL12-12 × GT-2 (196.52 %), JTL-12-12 × AT-3 (177.53 %), NTL-1 × JT-3 (160.31 %), JTL-12-10 × GT-2 (156.80 %) and JTL-12-11 × GT-2 (155.55 %). Positive significant heterosis was found for all the traits. Download
27 06/04/2022 Combining ability analysis for processing characters and its related traits in tomato (Solanum lycopersicum L.) A set of 40 genotypes including seven females, four males, their 28 single F1 combinations and one definitive check (Abhinav) existed planted at Vegetable Research Scheme, R.H.R.S., NAU, Navsari. During research the combining ability in tomato (Solanum lycopersicum L.) for 8 characters following Line x Tester mating method, Elevated public incorporating capacity experimental in parents of viz., JTL-12-04, JTL-12-10, JTL-12-12, JT-3 and AT-3 for one or more yield contributing traits. In hybrids, JTL-12-12 × JT-3, NTL-1 × AT-3, JTL-12-12 × GT-2, NTL-1 × JT-3, JTL-12-11 × GT-2, JTL-12-10 × GT-2, JTL-12-04 × AT-3 and JTL-12-04 × GT-1 exemplified increased heterosis bonded with huge SCA consequences for fruit result. Mixing skill analysis indicated that importance of SCA disagreements occurred elevated than GCA frictions for all the identities under research, which implied that prevalence of non-additive gene effort for heritage of all the characteristics. Therefore, distant breeding programme exploitation of heterosis is reasonable. Download
28 06/04/2022 Genetic studies for productivity and its related traits in tomato (Solanum lycopersicum L.) A set of 40 genotypes including seven females, four males, their 28 single F1 hybrids and one standard check (Abhinav) were sown at Vegetable Research Scheme, R.H.R.S., NAU, Navsari. During to study the heterosis in tomato (Solanum lycopersicum L.) for ten characters following Line  Tester mating design. High heterosis recorded by cross JTL-12-12× JT-3 was 295.83%, followed by NTL-1 × AT-3 (273.39%), JTL-12-12 × GT-2 (196.52%), JTL-12-12 × AT-3 (177.53%), NTL-1 × JT-3 (160.31%), JTL-12-10 × GT-2 (156.80%) and JTL-12-11 × GT-2 (155.55%) in positive direction. The crosses of either average × good, poor × good as well as average × poor yielding parents showed higher standard heterosis than good × good yielding parents. Thus, further breeding programme exploitation of heterosis is feasible. Download
29 06/04/2022 Knowledge regarding food and nutrition among farm women Good nutrition is an important factor in the promotion and maintenance of good health throughout the life. A balanced diet must include variety of foods in our daily diet. Number of factors affect on the selection of foods such as social, economical, geographical, environmental and knowledge regarding food and nutrition. All these factors interact in a complex manner to shape dietary consumption patterns and affect the morbidity and clinical status of women. Knowledge regarding food & nutrition is an important factor which independently can impact deeply on the choice, habits and nutritional status of an individual. It is important to know that how much awareness is there in the community, particularly in women because they select of food for entire family. Keeping this in mind, present study was under taken to assess the knowledge of farm women about food & nutrition. In this study, 100 trained farm women were selected randomly from Mandvi and Umarpada talukas of KVK operational area of Surat district, Gujarat. Data were collected by using personal interview method and to get inference the simple statistical tools were applied. Study revealed that majority of women (73per cent) had medium level of knowledge about nutrition. Result of this study indicates that women must be given a basic knowledge regarding food and their nutritional value to overcome the nutrition related problems among community Download
30 06/04/2022 Knowledge and adoption of kitchen gardening by urban women One of the easiest ways of ensuring access to adequate macro and micro nutrients is to produce and consume different kinds of vegetables and fruits from its own garden. Terrace garden is becoming common factor in today’s environment. Now days, land scalping on terrace and rooftops for urban horticulture has more involved due to excessive exploitation of urban land and highly pesticides contaminated fruits and vegetables. Besides terrace/kitchen garden cultivated fruits and vegetables can supply preferential fresh, toxic free, produce with minimum expenditure there by it encourages urban growers to produce healthy vegetables round the year. Looking to the popularity of Kitchen garden in urban areas, the present study was planned with an objective to study the awareness and extent of adoption of media preparation, sowing of different vegetables in different season and pest and disease management aspects of kitchen gardening. From the trained group of KVK, Surat, 100 urban kitchen garden owners were selected randomly. The data was collected by personal interview through structured schedule. The decided aspects for getting their awareness were critically enumerated while developing structure schedule. The simple statistical tools were used to analyze the data. Results revealed that the majority had medium level knowledge about kitchen gardening (70 per cent) and 09 per cent of the respondents had high level of knowledge about kitchen gardening, while in case of adoption majority had medium level of adoption rate about kitchen gardening (55 per cent) and only 20 per cent of urban women had high level of adoption rate about kitchen gardening. Download
31 06/04/2022 Adoption of fruits and vegetable preservation technology by farm women of surat district. India contributes a large quantity of fruits and vegetables in the worldwide production. In 2014-15, the production of fruits and vegetables was 88.98 million tons and 162.89 million tons respectively. Among this, the contribution of Gujarat was 163.6 tons for both fruits and vegetables (Anonymous, 2014). It is quite impossible for farmers to sale such a large quantity of production. To overcome this issue, adoption of value addition techniques can be a best option. It helps in decreasing waste as well as to get smart earnings to the farmers. They have little knowledge about processing and preservation technologies. Keeping this in mind, Krishi Vigyan Kendra, Surat, Navsari Agricultural University had framed training programmes on processing and preservation of fruits and vegetables in Surat district. In that 200 Farmers Interested Groups members were given a practical knowledge about fruits processing and preservations techniques. Out of this group, randomly 100 members were selected and information was collected with the help of questionnaire. On the basis of collected data, it was revealed that 47 per cent of women prepared tomato ketchup, 34 per cent prepared tuti-futi, 22 percent mix fruit jam and 12 percent pineapple squash at home. Economically, it has helped these women to reduce the expenses in purchase of these food products from the markets. Download
32 06/04/2022 Influence of abiotic factors on population dynamics of sucking insect pests in transgenic cotton. A field experiment was conducted to investigate the impact of abiotic factors on population dynamics of sucking insect pests in transgenic cotton cv. RCH138 Bt viz., aphid (Aphis gossypii Glover), jassid (Amrasca biguttula biguttula Ishida), whitefly (Bemisia tabaci Gennadius), thrips (Thrips tabaci Lindeman) and mealybug (Phenaccocus solenopsis Tinsley) under unprotected condition. The results of the field study revealed that the sucking pest population was found throughout the year from first fortnight of August to end of January. The peak population of aphid, jassid, whitefly, thrips and mealybug were 4.38, 4.39, 3.98, 1.53 and 4 grade infestation in 50th, 37th, 46th, 40th and 41st – 42nd standard week, respectively. Correlation analysis with the weather parameters viz., temperature, relative humidity, wind velocity, sunshine hours and rainfall revealed that maximum temperature showed significant positive effect on all the sucking insect pests. The minimum temperature showed negative effect on aphid population and non significant effect on whitefly and thrips population. The relative humidity has non-significant effect, whereas precipitation has negative effect on all the sucking pests Download
33 06/04/2022 Screening of Gossypium hirsutum entries/breeding material of cotton for resistance to different diseases under rainfed condition. A field experiment was laid out with the two replications in different entries of cotton (G. hirsutum) and two rows of each entries were sown of total thirty one (31) with one check (LRA 5166) at Regional Cotton Research Station (RCRS), NAU, Bharuch, Gujarat entitled as the Screening of Gossypium hirsutum entries/ breeding material of cotton for resistance to different diseases under rainfed condition. Differences in resistance to all the diseases were found in the material tested under natural condition. Results revealed that the entries may vary in grade respectively. This study concludes that screening of different entries of cotton for resistance to diseases is an important factor in developing varieties/hybrids with improved resistance to different diseases in cotton crop. Download
34 06/04/2022 Varietal screening of varieties/breeding materials for resistance to different diseases in natural condition under South Gujarat region. Cotton is the main principal commercial crop of our economy. Cotton leftovers the most phenomenal fiber crop and is still nature’s wonder fiber. Cotton is grown all around the globe, and is traded internationally as well. The production is inclined by the repeated out breaks of pest and diseases and these are the major factors responsible for lower yield of cotton. A field trial was conducted at Main Cotton Research Station (MCRS), NAU, Surat in the year 2014 for a season to determine the influence of diverse diseases in respect to different varieties/ entries. During the season, entries/ varieties were evaluated for their reaction against the different diseases in cotton crop. Total thirty six varieties/ entries including checks were evaluated for their reaction against the bacterial blight disease. Out of these entries, GSHV 159 and GSHV 172 found disease free. Whereas, eleven entries viz., GSHH 2529, GSHH 2646, GTHH 193, G. Cot. Hy.8, GISV 272, GBHV 164, GBHV 180, G. Cot. 16, G. Cot. 20, G. Cot. 22 and GBHV 185 were found moderately resistant and G. Cot. Hy. 12 and G. Cot. 10 were moderately susceptible and rest of the entries was found resistant against the bacterial leaf blight disease. Download
35 06/04/2022 Artificial inoculation of bacterial leaf blight (BLB) pathogen/inoculum on different entries of cotton crop under South Gujarat region, India. Cotton is a very important commercial crop of India and to the world. Essentially used for fibre, fuel and edible oil and various other purposes. It is important because it is cash crop to the farmers. Out of 30 diseases known to occur in cotton crop from time to time, the bacterial blight is the most wide spread and destructive disease reported to cause yield losses of about 10 to 30 per cent. In this experiment different cultivars/ entries were screened against the bacterial leaf blight disease. Infester row of susceptible check LRA 5166 was grown alternating every four rows of the test entries. The maximum PDI of LRA 5166 was 20.0 PDI was observed. Artificial inoculation was made twice by preparing the spore suspension of BLB. Total 44 entries were screened through artificial inoculation, from these entries viz., GN Cot. 22, GISV 272, GSHV 180 and G. Cot.20 (LC) were moderately resistant against the bacterial leaf blight disease whereas, in case of Alternaria leaf spot disease, three entries viz., GISV 272, GSHV 180 and G. Cot. 20 (LC) were observed as resistant against the disease. Rests of the entries were free from the infection. Download
36 06/04/2022 Relationship of bacterial leaf blight disease of cotton with different weather parameters under South Gujarat condition of India. Cotton is a soft, fluffy staple fiber that grows in a boll, around the seeds of the cotton plants of the genus Gossypium in the family Malvaceae. Bacterial blight of cotton, also know as angular leaf spot, boll rot, and black leg, is a potentially destructive bacterial disease of cotton production. The disease caused by Xanthomonas campestris pv. malvacearum (Smith) Dye (synonyms Xanthomonas malvacearum (E.F. Sm) Dowson) is one of the most important and serious disease in cotton crop. Main objective of present research is to study the progress of the bacterial blight disease of cotton (BLB), caused by Xanthomonas campestris pv. malvacearum (Smith) Dye, with relation to the environmental parameters. This is a common disease affecting the growth, development and yield of cotton. A field trial was conducted to determine the influence of environmental factors, viz. rainfall periods, temperature, sun shine hours and humidity on the development of disease. Bacterial blight disease was recorded with its appearance and subsequently at weekly interval till it prevailed on G. Cot. Hy.12 (Non Bt). The incidence of bacterial blight disease (BLB) was noticed during 28 to 49th standard week with the maximum disease intensity in third week of September (23.5% PDI). None of the abiotic factors had significant influence on bacterial blight disease progress and development. Download
37 06/04/2022 Heat unit requirement of rainfed cotton under South Gujarat condition. Field experiments was conducted to study the heat unit requirement for rainfed American cotton cultivars at Regional Cotton Research Station of, NAU, Maktampur, Gujarat, during kharif season of 2016. The experiment consisted of three cultivarsviz.,(GBHV-180, GBHV-183, GBHV-164) sown on oneset of monsoon was laid out in randomised block design replicated thrice. The results revealed that an overall day from sowing to physical maturity in different cultivars varies between 182 to 191. Similarly thetotal heat unit (GDD, HTU PTUand PTI) accumulated during life period of crop up to maturitybetween (2929 to 30110C day, 16536 to 171350C hrs, 35184 to360910C hrs) and (84.4 to 86.7oC days day-1) respectively Download
38 06/04/2022 Screening of cotton varieties/genotypes against jassid, Amrasca biguttula biguttula (Ishida) under rainfed conditions. Screening of sixteen cotton varieties/genotypes against jassid, Amrasca biguttula biguttula (Ishida) was carried out under rainfed conditions during kharif seasons of 2015-16 and 2016-17 at Regional Cotton Research Station, Navsari Agricultural University, Maktampur farm, Bharuch, Gujarat. The results revealed that none of the cotton variety/genotype was totally free from attack of A. biguttula biguttula and categorized as resistant based on population of jassid. Eleven varieties/genotypes viz., G.Cot.-12, GSHV-01/1338, GISV267, G.N.Cot.-22, GSHV-159, GISV-272, GBHV-177, GBHV-170, GBHV-180, GBHV164 and G.Cot.-16 were designated as moderately resistant to jassid by recording the population ranged from 2.41 to 6.37 jassids/3 leaves. The susceptible cotton varieties/genotypes comprised G.Cot.-10, LRA-5166 and G.Cot.-100 which registered population ranged from 8.11 to 11.38 jassids/3 leaves. However, genotype Cocker-310 and GSB-21 were categorized as highly susceptible to jassid with population of more than 11.73 jassids/3 leaves. The highest seed cotton yield (2522 kg/ha) was recorded on moderately resistant genotype GISV-272. The seed cotton yield showed highly significant negative correlation with jassid population (r= -0.646). Download
39 06/04/2022 Population dynamics of cotton jassid, Amrasca biguttula biguttula (Ishida) and natural enemies in relation to weather parameters under rainfed conditions. Investigations on population dynamics of cotton jassid, Amrasca biguttula biguttula (Ishida) and natural enemies were carried out under field condition during Kharif 2015 and 2016 at Regional Cotton Research Station, Navsari Agricultural University, Maktampur farm, Bharuch, Gujarat. Population dynamics study revealed that cotton jassid was observed throughout the crop period during both seasons. Jassid population crossed economic threshold level during 36th and 35th Standard Meteorological Week (SMW) and continuously found above ETL till 2nd SMW (19 weeks) and 51st SMW (17 weeks) during 2015-16 and 2016-17, respectively. The peak population of jassid was recorded in 43rd SMW (37.22 jassids/3 leaves) and 46th SMW (38.48 jassids/ 3 leaves) during 2015-16 and 2016-17, respectively. Among natural enemies, lady bird beetle was observed during 38th to 4th SMW (0.04 to 1.34/ plant) and 33rd to 2 nd SMW (0.06 to 1.60/ plant) with its peak in 48th SMW and 50th SMW whereas, chrysoperla was observed during 37th to 2nd SMW (0.04 to 0.48/ plant) and 36th to 51st SMW (0.04 to 0.36/ plant) with its peak in 46th SMW and 40th SMW during 2015-16 and 2016-17, respectively. The population of spider was found almost entire crop period ranging from 0.06 to 0.46 per plant and 0.08 to 0.54 per plant with its peak in 45th SMW and 43rd SMW during 2015-16 and 2016-17, respectively. The jassid population showed significant positive correlation with maximum temperature, evaporation and sunshine hours whereas, significant negative correlation with wind speed and rainy days. The jassid population showed highly significant positive correlation with chrysoperla and spider population while, non-significant positive correlation with lady bird beetle population on cotton crop. The population of lady bird beetle had highly significant negative correlation with minimum and average temperature, morning, evening and average relative humidity, wind speed, rainfall and rainy days while significant positive correlation with sunshine hours and evaporation. The chrysoperla and spider population had significant positive correlation with maximum temperature and evaporation while significant negative correlation with wind speed and rainy days. The spider population also showed significant positive correlation with sunshine hours. The step wise regression analysis indicated that the influence of weather parameters was upto 69.0 percent, 49.6 percent and 42.5 percent on the incidence of jassid during kharif 2015, kharif 2016 and mean of two seasons, respectively. Download
40 06/04/2022 Effect of different sowing date on phenology, growth and yield of rice– a review. Rice being an important staple food crop of world, sowing date significantly influenced on growth and yield of rice crop, it has been studied by number of research workers from various parts of India and abroad. The sowing time of the rice crop is important for three major reasons. Firstly, it ensures that vegetative growth occurs during a period of satisfactory temperatures and total sunshine hours. Secondly, the optimum sowing time for each cultivar ensures the cold sensitive stage occurs when the minimum night temperatures are historically the warmest. Thirdly, sowing on time guarantees that grain filling occurs when milder autumn temperatures are more likely, hence good grain quality is achieved. Results from different studies revealed that the maximum yield potential of a rice crop is usually achieved when the crop is exposed to the most appropriate temperature range, which can be controlled by sowing at the proper time. In this paper an attempt has been made to critically review the research works carried out within the country as well as in abroad Download
41 06/04/2022 Status of different diseases of cotton under South Gujarat region of India. In this experiment, different districts of South Gujarat were closely examined for various diseases in different cultivars/ Bt hybirds. A roving survey was conducted on cultivars’ field during the crop season and a fix point survey on cotton crop was conducted periodically at Research farm, Surat. During the season, only Bacterial leaf blight disease was found on G. Cot. Hy. 12. The incidence of Bacterial leaf blight disease (BLB) was noticed from 33rd to 50th standard week with the maximum disease intensity in the third week of October (22.5 %) i.e. in 42nd Met. week. Results indicated that Bacterial leaf blight (BLB) disease has positive correlation with the maximum and minimum temperature and sunshine hour for the disease development. Survey was conducted on farmer’s field as well as on Research farm. Bacterial leaf blight incidence varied from 0.0 to 22.5 PDI and Alternaria leaf spot disease varied from 0.0 to 12.0 PDI in different cultivars/ hybrids on Research farm. Whereas, in case of farmer’s field, roving survey was mostly carried out on BG II hybrids, the BLB incidence was in the range of 0.0 to 4.5 %, 0.0 to 12.0 % and 2.0 to 4.5 PDI in Surat, Bharuch and Narmada districts, respectively. Moreover, Alternaria leaf spot disease was observed to the tune of 0.0 to 8.0 %, 0.0 to 10.0 % and 0.0 to 1.0 PDI in Surat, Bharuch and Narmada district, respectively. Download
42 06/04/2022 High density planting with insecticide resistance management approach for sustainable and profitable cotton production in rainfed region. High density planting demonstrations (50) on farmers’ fields at varied close spacings (75x10 and 90x10cm) with available compact genotypes (Suraj and G.Cot.16) were compared to normal spacing (120x45 cm) under Insecticide Resistance Management (IRM) umbrella in rain fed regions of Bharuch district under the project “NFSM:HDPS-IRM” during the year 2015-16. Aphid, thrips and leafhopper were found above ETL whereas whitefly and mealybug were found below ETL. The mean larval population of pink bollworm was 4.41 and 3.14 larvae/20 green bolls in Suraj and G.Cot.16 spaced at closed spacings, respectively. The pink bollworm population was 2.51 and 2.68 larvae/20 green bolls in Bt-IRM and non IRM plots, respectively. Suraj variety spaced at 75x10 and 90x10 cm required 4.21 and 3.33 sprays and G.Cot.16 spaced at 75x10 and 90x10 cm required 4.40 and 3.60 sprays against sucking pests and 2.37 and 2.38 and 3.20 and 2.40 sprays against bollworms, respectively as against 5.00 and 5.60 sprays against sucking pests and 2.00 and 3.80 sprays against bollworms in Bt-IRM and Bt-Non IRM cotton, respectively. The net return was found higher in G.Cot.16 HDPS at both the spacing (Rs. 22966 and 17456/acre) than the Suraj HDPS (Rs. 16461 and 8235/acre). The net return for Bt-IRM farmers was higher (Rs.21527/acre) than non IRM-Bt farmers (Rs. 17919/acre). HDPS offer viable option to increase productivity especially under rain-fed region. Download
43 06/04/2022 Screening of Gossypium arboreum varieties/breeding materials for resistance to bacterial leaf blight disease under natural and rainfed condition. Drought tolerance, resistance to diseases like root rot and insect pests like bollworms and aphids makes species G. arboreum well adapt to dry land (rain fed) conditions and low input cultivation practices. Under natural condition, bacterial blight infection, boll yield losses up to 35 % have been reported (Sheo Raj and Verma, 1988). Bacterial blight disease affects the entire aerial parts of cotton plant i.e. necrosis of parenchymatous tissue in the local phase and blockage of xylem vessels in its systemic phase (Casson et al., 1977). Gossypium arboreum cotton genotypes viz., GBav-106, GBav-107, GBav-111, GBav-124, GBav-125, GBav-128, GBav-133, GBav-135, GBav-136, GBav-137, GBav-138, and G.Cot-19 observed as Disease free whereas GBav-123 observed as resistant against the bacterial leaf blight disease. Download
44 06/04/2022 Screening of Gossypium hirsutum varieties/breeding materials for resistance to Alternaria leaf spot and bacterial leaf blight diseases under natural and rainfed conditions. Screening of Gossypium hirsutum varieties/genotypes against Alternaria leaf spot and bacterial leaf blight diseases under natural and rainfed field conditions was conducted during kharif seasons of 2014-15 and 2015-16 at Regional Cotton Research Station, Navsari Agricultural University, Maktampur farm, Bharuch, Gujarat. Two cotton genotypes i.e. GSHV-159 and GBHV-184 were found disease free; ten varieties/genotypes viz., G.Cot.-34, G.N.Cot.-26, GBHV-177, GBHV-180, GBHV-183, G.N.Cot.-22, GBHV-185, GBHV-187, GBHV-193 and GBHV-202 as resistant, while the variety G.Cot.-16 were found moderately resistant against Alternaria leaf spot disease. Cotton genotype GBHV-193 was found disease free; nine varieties/genotypes viz., GSHV-159, G.N.Cot.-26, GBHV-177, GBHV-180, GBHV183, G.N.Cot.-22, GBHV-184, GBHV-185 and GBHV-202 as resistant, whereas three varieties/genotypes viz., G.Cot.-34, G.Cot.-16 and GBHV-187 were found moderately resistant reaction against bacterial leaf blight disease. Download
45 06/04/2022 Integrated diseases management (IDM) modules for the management of cotton diseases in natural condition under south Gujarat region of India. Cotton is a vital commercial crop in the world and plays an important role for fibre, fuel and edible oil in the community and to industry. Cotton is a white fibrous agricultural product that has a wide variety of uses, from textile production, to creating paper, to producing oil and food products. Cotton is grown all around the globe, and is traded internationally as well. The cotton diseases scenario has shown a continuous change during the past 64 years. Several diseases have been reported for the cotton crop. The use of IDM strategy is gaining momentum now a days, but in developing countries it often lacks the enabling environment for its successful implementation. Cotton crop is affected by various diseases caused by organisms, such as fungi, bacteria and viruses that grow on and within the plant tissues. In this experiment, total seven modules including the control was tested in this experiment from which, module 6 (6.50% PDI), followed by module 5 (8.50% PDI) significantly recorded minimum bacterial leaf blight infection in comparison to the module 7, i.e. control (18.50% PDI) in RCH 2 BG II hybrid. For Alternaria leaf spot disease, module 6 (2.50 % PDI) were recorded significantly minimum Alternaria leaf spot disease in RCH 2 BG II hybrid, as compared to the control (10.50 % PDI), followed by module 5 Download
46 06/04/2022 Assessment of yield losses due to mealybug (Phenacoccus solenopsis Tinsley) infestation in the cotton farmers’ field of south Gujarat. Investigation on incidence and estimation of yield losses due to mealybug (Phenacoccus solenopsis Tinsley) was carried out on cotton farmers’ fields of South Gujarat during 2015-16 to 2017-18. Total of 21 villages of two districts were surveyed for assessment of losses due to mealybug infestation during the harvesting seasons (October to December). The average intensity of mealy bug was 9.32 and 19.93 per cent within 8.50 and 16.56% infested plants in villages of Umarpada and Olpad taluka of Surat district, respectively. Whereas it was 13.84, 16.50, 21.02 and 21.15 per cent within 12.13, 14.11, 17.33 and 17.44% infested plants in villages of Hansot, Amod, Valia and Bharuch taluka of Bharuch district, respectively. The management practices followed by farmers and the data on natural parasitism of mealybug by Aenasius bambawalei Hayat was also recorded in the surveyed villages which indicated per cent parasitism in the range of 6.56 to 9.21 in Olpad and 4.73 to 7.08 per cent in Umarpada taluka whereas it was 4.90 to 11.07 in Hansot, 6.79 to 13.14 in Amod, 10.53 to 14.60 in Valia and 8.00 to 12.61 per cent in Bharuch taluka. The yield loss due to mealybug was assessed based on prevalence of plants having four grade injuries and was estimated to be 0.69 to 1.49% in villages of Olpad taluka whereas it was nil in villages of Umarpada taluka. In Bharuch district, it was 0 to 0.74, 0.68 to 2.63, 1.07 to 2.44 and 1.87 to 2.97% in villages of Hansot, Amod, Bharuch and Valia taluka, respectively. Under farmers’ practices, the overall loss estimated was 1.07% worth of Rs. 4800/-per ha comprising of Rs. 2800/-for seed cotton yield and Rs. 1987 for mealybug management. Download
47 06/04/2022 Morphological and cultural characteristic of Fusarium oxysporum f. sp. vasinfectum (FOV) under South Gujarat. Cotton (Gossypium spp.) is one of the most important fiber crops playing a key role in economic and social scenario of the globe. It provides employment and sustenance to a population of nearly 42 Million people, who are involved directly or indirectly in cotton production, processing, textiles and related activities. In this experiment morphological and cultural character of FOV pathogen was studies. Morphological studies were carried out under different temperature on Potato dextrose broth (PDB) medium revealed growth and sporulation, variation in size of micro conidia, macro conidia and chlamydospores of FOV. Macroconidia were straight, spindle as well as sickle shaped and had 1-6 septa. The size of macroconidia was maximum at 20ºC (27.11×4.90μm) followed by 35ºC (26.11×3.90μm), 40ºC (25.90×4.20μm), 30ºC (25.33×4.18μm), 25ºC (23.11×3.70μm) and 15ºC (21.42×3.57μm). A maximum colony diameter (87.33mm) was recorded at 30ºC after ten days of incubation followed by (68.33mm) at 25ºC, (49.33mm) at 20ºC, (28.33mm) at 35ºC, (26.00mm) at 15ºC and (8.00mm) at 40ºC. No colony diameter was recorded at 45ºC temperature. Download
48 06/04/2022 Screening of different non systemic and systemic fungicides for the wilt disease of cotton under in vitro condition of South Gujarat. In this experiment, different districts of South Gujarat were closely examined for the presence of wilt disease in different cultivars/ Bt hybrids during the crop season to know the current scenario of wilt disease. The respective FOV wilt pathogen was purified, identified and isolated from the infected cotton plant. Here, different fungicides were tested for their effect on the growth of Fusarium oxysporum f. sp. vasinfectum (FOV) using poisoned food technique. The technique involves cultivation of test organism on a medium containing the test chemical. In all the experiments, PDA was used as basal medium. Fungicides viz., six non systemic and six systemic fungicides were evaluated at three different concentrations by poisoned food technique for evaluating their efficacy against Fusarium oxysporum f. sp. vasinfectum. Among them, non systemic fungicides copper oxychloride and systemic fungicides carbendazim significantly inhibited the growth of the Fusarium oxysporum f. sp. vasinfectum and proved strongly fungitoxic in nature against the FOV pathogen. Download
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