Institute of Agriculture science

Vārānasi, India

Institute of Agriculture science

Vārānasi, India
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Srivastava S.,Institute of Agriculture science | Srivastava M.,P.A. College | Kumar R.,Indian Agricultural Research Institute | Shrivastava S.K.,Sardar Bhagwan Singh Post Graduate Institute of Biomedical science and Research | And 2 more authors.
Journal of Pure and Applied Microbiology | Year: 2014

Jatropha curcas L. has been considered a potential source of seed oil for the production of biofuel. The aim of this study was to estimate the change in carbohydrate and phenolic content of Jatropha seeds after deterioration under storage condition. For estimation of carbohydrate and phenol fresh, stored as well as infested Jatropha seeds were used. Whole seed and kernels were infested with six dominant fungi viz. Alternaria alternata, Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Fusarium chlamydosporum and Penicillium glabrum separately. Four different concentrations of seed samples viz. 50μl, 100μl, 150μl and 200μl were taken for the carbohydrate and phenol estimation of stored as well as infested Jatropha seeds. Carbohydrate content got reduced during storage while the phenolic content increases to show their antimicrobial effect. Maximum carbohydrate found was 50mg/ml at 200μl concentration in Fusarium chlamydosporum infested Jatropha seeds followed by Penicillium glabrum i.e., 30mg/ml and minimum carbohydrate content found was 1mg/ml at 50μl concentration in Aspergillus flavus infested Jatropha seeds and 4mg/ml in Aspergillus fumigatus at 50μl concentration in infested Jatropha kernels. Maximum Phenol content found was 190mg/100mg dry wt. in Fusarium chlamydosporum infested Jatropha kernels followed by Penicillium glabrum infested Jatropha seeds and kernels i.e., 180mg/100mg dry wt. at 200μl concentration while minimum phenol content was found nearly same i.e., 5.33mg/100mg dry wt. and 5.67mg/100mg dry wt. at 50μl and 100μl concentrations in fresh seeds, respectively.

Srivastava S.,Institute of Agriculture science | Singh V.P.,Sardar Vallabhbhai Patel University of Agriculture and Technology | Kumar R.,Institute of Agriculture science | Srivastava M.,P.A. College | And 2 more authors.
Asian Journal of Plant Pathology | Year: 2011

The aim of the present study was to check the efficacy of carbendazim 50% WP, antagonists and botanicals against Fusarium oxysporum f. sp. psidii associated with rhizosphere soil of guava. Guava (Psidium guajava L.) the apple of tropics is one of the most important fruit in India. The fruit of guava is a good source of vitamin C and pectin. Guava wilt is a serious disease and it recognized as a main causal organism. Isolation and identification of pathogen (Fusarium oxysporum f. sp. psidii) was carried out in the Department of Plant Protection, Allahabad Agricultural institute Deemed University, Allahabad. The radial growth of Fusarium cxysporum f. sp. psidii was fully inhibited at high concentrations like 100, 1000 and 10,000 ppm of cardendazim 50% WP whereas antagonists like Trichoderma spp. Produced maximum inhibition zone (61.91%) followed by Aspergillus niger (61.12%). The radial growth of Fusarium cxysporum f. sp. psidii was also significantly less in neem leaf extract treatment followed by Lantana leaf extract. Management of guava wilt by chemical (systemic fungicide) can be spectacular but this is relatively short-term measure. Eco-friendly management practices, i.e., use of bio-control agents and botanicals was studied in vitro which gave better results and these practices can be economical, long lasting and free from residual side effects. © 2011 Academic Journals Inc.

Srivastava S.,Institute of Agriculture science | Gupta G.N.,Sam Higginbottom Institute of Agriculture, Technology and Sciences | Sinha A.,Institute of Agriculture science | Srivastava V.,H+ Technology | Srivastava A.,B.H.U
Indian Journal of Agricultural Biochemistry | Year: 2015

Biodiesel is a renewable alternative fuel for the diesel engine derived from natural sources like Jatropha curcas oil. The present study was to estimate the changes that occur in physico-chemical properties of oils extracted from stored Jatropha seeds in comparison to fresh Jatropha seeds. Physico-chemical properties of Jatropha oil viz. acid value, iodine value, saponification value, UV spectroscopy, cetane value, refractive index, viscosity were estimated. All the values were higher in stored seed oil except iodine value which was lower than fresh seeds. The acid value, saponification value, refractive index and viscosity shows negative effect on the quality of Jatropha oil while decrease in iodine value and increase in cetane value is preferable for better quality bio-diesel. © 2015, Indian Society of Agricultural Biochemists. All rights reserved.

Kumar V.,Institute of Agriculture science | Nandan R.,Institute of Agriculture science | Srivastava K.,Institute of Agriculture science | Sharma S.K.,Institute of Agriculture science | And 2 more authors.
Plant Archives | Year: 2013

The present investigation was conducted at Vegetable Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), India during Rabi 2008-09. The genetic parameters and correlation were studied for yield and quality traits in tomato. The experimental material comprised of thirteen genotypes (10 lines + 3 testers) and their thirty crosses alongwith two checks of tomato and the experiment was laid out in Randomized Block Design with three replications. The maximum genotypic and phenotypic variation was (168.30 and 169.95 cm.) for plant height and minimum for fruit shape index (0.02 and 0.02), respectively. Analysis of coefficient of variation revealed that magnitude of phenotypic coefficient was higher than genotypic coefficient of variation for all the characters except primary branches per plant under study. The magnitude of genotypic and phenotypic coefficient of variation was higher for number of fruits per cluster (18.04 and 18.32), lycopene content (22.07 and 22.46), respectively. High values of heritability (broad sense) for plant height (99%) and fruit per cluster, total soluble solids and lycopene (97%) and high genetic advance were observed for plant height and average fruit weight (26.59 and 14.88%), respectively. A positive and significance association of yield per plant with all the traits both at genotypic and phenotypic levels.

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