TAILIEUCHUNG - Influence of slow release nitrogenous fertilizers on soil enzyme activity and microbial population under laboratory condition

An Incubation study under laboratory condition were conducted during 2015-16 with a view to study “Influence of slow release nitrogenous fertilizers on soil enzyme activity and microbial population under laboratory condition” The laboratory incubation experiment was conducted in completely randomized design. In incubation study, the urease enzyme activity was increased with an increased period of incubation in all the treatments. Dehydrogenase enzyme activity was significantly higher in treatment GRDF at 7, 21, 45 and 90 DAA (, , and µg TPF g-1 soil hr-1 respectively). It was increased upto 45 DAA and decreased at 90 DAA. The treatment GRDF significantly recorded the higher population of Nitrosomonas at all the period of incubation and on par with treatment RDN-SCU, NCU and CDU at 7 and 14 DAA. The use of NCU and SCU recorded less Nitrobacter population in early period of incubation. The application of nitrogen through slow release fertilizers as CDU, NCU and SCU and their combination with urea and among the organic sources release the soil available nitrogen with advanced incubation period. It was decreased in treatment GRDF and RDN-CDU at 90 DAA. The release of ammonical nitrogen in all the treatments showed the similar trend to that of soil available nitrogen at all the period of incubation. The slow release nitrogen fertilizer treatment @ 50 % RDN-urea + 50 % RDN either through CDU, NCU or SCU were beneficial for release of nitrate nitrogen in soil. | Influence of slow release nitrogenous fertilizers on soil enzyme activity and microbial population under laboratory condition

• Hoá học
• Slow release nitrogenous fertilizers
• Dehydrogenase activity
• Bacterial population
• Laboratory condition
• Microbial population
• Microbial activities
• Chickpea sown after soybean
• Imazthapyr on N uptake
• Nodulation and microbial population
• Microbial population of chickpea
• Nutrient uptake
• Microbial population of mungbean
• Zinc solubilizing microorganism
• Minimum tillage
• Rice equivalent yield
• Soil microbial population
• Soybean under maize
• Wheat cropping system
• Brewery wastewater
• Soil properties
• Brewery wastewater irrigation
• Microbial population as influenced
• Soil available nutrients
• Rasomati forest of Pundibari Range
• Cooch Behar
• Slightly acid
• Yield and growth attributes
• Microbial population of sesame
• Integrated nutrient management in yield
• Growth attributes
• Acid lime
• Organic mulching
• Inorganic mulching
• Citrus aurantifolia Swingle
• Soil enzymatic activity
• Finger millet
• Methods of establishment
• Nutrient sources
• Chemical fertilizers
• Yield and quality
• Sweetcorn (Zea mays L
• saccharata)
• Chemical fertilizers on microbial population
• Humic acid
• Enzymatic activity
• Humic acid on soil microbial population
• Organic tomato
• Weed management
• Weed compost
• Cement dust
• Soil microbial properties
• Cement dust deposition
• Minimum population
• Observed in case of fungal population
• N uptake
• Chickpea sown after rice
• Post emergence application of imazthapyr
• Actimomycetes population
• Improve rhizospheral microbial population
• Organic cotton in vertisols
• Organic cotton
• Eight sole organic treatments
• Irrigated agriculture
• Soil depth
• Nitrogenase activity
• Nitrogen fixing bacteria
• Influence of foliar application
• Foliar application
• Water soluble fertilizers
• Rhizosphere microbial population
• Green gram (Vigna radiata L
• Fungi and phorate
• Soil applied granular insecticides
• Sugarcane grown soil
• Application of insecticides
• Significantly higher
• Soil biomass carbon
• Eleusine coracana L
• Organic manures
• Residual effect
• Direct effect
• Little millet
• Urine sample
• Microbial agents
• Including bacteria
• Yeasts responsible for UTI
• Western uttar pradesh population India
• Common etiological agents
• Dry DSR
• Enzyme activity
• Grain yield
• Dry direct seeded rice
• Leaf and fruit nutrients
• Aonla (Emblica officinalis Gaertn
• Integrated nutrient management strategies
• Nutrient status
• Pole bean (Phaseolus vulgaris L )
• Soil fertility status
• Nutrient management practices
• C N ratio
• Bio mineralizer
• Cow dung slurry
• Straw decomposition rate