Browsing by Author "J. Yadav"

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Application of Rhizobium sp. BHURC01 and plant growth promoting Rhizobactria on nodulation, plant biomass and yields of chickpea (Cicer arietinum L.)
(2010) J.P. Verma; J. Yadav; Kavindra Nath Tiwari
Field-based experiments were conducted to evaluate the combined application of Rhizobium sp. BHURC01 and plant growth promoting rhizobacteria on chickpea production in two consecutive years. A positive influence of plant growth promoting rhizobactria and Rhizobium sp. BHURC01 on nodulation, plant biomass, nitrogen and phosphorus in nodule, grain and straw and yield related parameter were recorded in two year of field experiments. The maximum significant increase in nodule number, dry weight of nodule, root and shoot were recorded in co-inoculation of Rhizobium sp. BHURC01 and Pseudomonas fluorescens followed by co-inoculation of Rhizobium sp. BHURC01, Azotobacter chroococcum and Bacillus megaterium over uninoculated control in two year of field study while, nitrogen and phosphorus content increase in nodules, grain and straw. The Rhizobium sp. BHURC01 and P. fluorescens showed significant increase in all parameter due to more available nitrogen by Rhizobium sp. BHURC01 and more available of phosphorus, iron and plant hormones like indole-3-acetic acid (IAA) and antifungal activity by P. fluorescens in comparison of B. megaterium and A. chroococcum. Therefore, co-inoculation of Rhizobium sp. BHURC01 and P. fluorescens could be effective biofertilizer for chickpea (Cicer arietinum L.) production. © 2010 Academic Journals Inc.
Appraisal biological health status of the cultivated lands of Varanasi district of Uttar Pradesh
(Journal of Pure and Applied Microbiology, 2015) Ajeet Kumar; J. Yadav; Awtar Singh
Soil health indicators are needed that help farmers to understand the chain of cause and effect that links farm decision to ultimate productivity and health of plant and animals. No single indicator was universal in describing soil property change due to the cultivation. However, there was a significant correlation between soil physical, chemical and biological indicators, which validates the holistic approach to soil health management and the need to better understanding of the flow on effects of soil management decisions. The Indo-Gangetic plain of Varanasi district was selected for the study. 24 surface soil (0-15cm) samples were collected from the cultivated land in Varanasi district and analysed for pH, EC, available N, P, K content and biological health status of soil. 22 samples having the low organic carbon status and 2 samples are medium in organic carbon. The availability of nitrogen vary from 163 to 301 kg ha-1, phosphorus ranges from 14.16 to 40.39 2 kg ha-1, while range of potassium vary 112.0 to 1358 kg ha-1. The Dehydrogenase activity of soil vary from 24.33 to 70.33 μg TPF g-1 soil day-1, urease activity of soil vary from 128.60 to 342.30 μg UH g-1 soil h-1 alkaline Phosphatase activity vary from 68.70 to 211.70 μg PNP g-1 soil h-1, whereas acid Phosphatase activity from 57.30 to 162.30 μ g PNP g-1 soil h-1. The Soil microbial biomass carbon (SMBC) and soil respiration values of the soils vary from 90.60 to 321.30 mg C kg-1 soil and 0.1992 to 0.5421 mg CO2-C g-1 soil day-1. Microbial Population of bacteria, fungi and actinomycetes in the soils vary from 14.20-42.70, 6.70-32.70 and 9.30-31.30 CFU × 106 g-1 soil respectively.
Assessment-biological health status of the cultivated lands of Mirzapur district of Uttar Pradesh
(Enviro Media, 2015) Ajeet Kumar; J. Yadav; Awtar Singh
To improve the sustainability and environmental accountability of soil there is a need to develop a set of soil health indicators that integrate physical, chemical and biological soil properties. The soils of Vindhyan Zone of Mirzapur district was selected for the study. 30 surface soil (0-15cm) samples were collected from the cultivated land and analysed for pH, EC, available N, P, K content and biological health status of soil. All the soil samples having the low organic carbon status. The availability of nitrogen vary from 125 to 276 kg ha-1, phosphorus ranges from 14.4 to 51.1 kg ha-1, while range of potassium vary between 75.8 to 586 kg ha-1. The Dehydrogenase activity of soil vary from 24.0-58.33 ug TPF g-1 soil day-1, urease-activity of soil vary from 93.6 to 284.3 ug urea hydrolysed g-1 soil h-1, alkaline phosphatase activity vary from 84.3 to 245.67 ug PNP g-1 soil h-1, whereas acid phosphatase activity from 76.3 to 163.6 ug PNP g-1 soil h-1. Soil microbial biomass carbon (SMBC) and soil respiration values of the soils vary from 104.6 to 260.0 mg C kg-1 soil and 0.1879 to 0.4562 mg CO2-Cg-1 soil day-1 respectively. Microbial population of bacteria, fungi and actinomycetes in the soils vary from 14.0 to 40.30 × 106 CFU g-1 soil, 6.7 to 29.3 × 104 CFU g-1 soil and 9.3 to 26.7 × 105 CFU g-1 soil respectively. © Copyright EM International.
EFFECTS OF CHEMICAL FERTILIZER, FYM AND BIO-INOCULANTS ON NUTRIENT CONTENT, UPTAKE AND QUALITY OF WHEAT (TRITICUM AESTIVUM L.)
(Bangladesh Botanical Society, 2021) Hanuman Prasad Parewa; J. Yadav; V.S. Meena; A. Rakshit
Effects of different levels of chemical fertilizer, farmyard manure (FYM) and bio-inoculants on nutrient content, uptake and quality parameter of wheat were studied. Results indicated that increasing levels of chemical fertilizer, FYM and bio-inoculants significantly enhanced nutrient content and uptake by wheat, while quality parameters of wheat showed significant results with bio-inoculants application. Maximum N, P and K content and their uptake in grain (80.3, 11.07 and 25.29%, respectively) and straw (32.18, 7.14 and 95.92%, respectively) were noticed with 100% NPK over control. Application of FYM @ 10 t/ha significantly increased nutrient content (NPK) in grain and straw and their uptake over the control. The total N, P and K uptake by wheat were found to be maximum 80.97, 12.68 and 86.10 kg/ha, respectively with the application of FYM over control. Combined use of fertilizer levels and FYM, and combined use of fertilizer levels and bio-inoculants significantly increased the nutrient uptake by wheat. © 2021 Bangladesh Botanical Society. All rights reserved.
Thermostability of extracellular protease enzyme produced by Spicaria fusispora, a thermophilic fungus
(1989) R. Gaur; J. Yadav; L. Pandey
[No abstract available]