National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Studies were conducted to understand the influence of integrated nutrient management on soil enzymatic activity under rice-rice cropping system since 1988 at Agricultural College Farm, Rajendranagar, Hyderabad. The enzyme activities viz., urease (55.8, 54.2 µg of NH4+-N g-1 soil 2h-1), dehydrogenase (488.23, 364.3 µg of TPF g-1 soil day-1) and acid (79.28, 70.50 µg p-nitrophenol g-1 soil h-1) and alkaline phosphatase (149.70, 129.53 µg p-nitrophenol g-1 soil h-1) were significantly higher in treatment T3 (50 % RD of NPK + 50 % N through FYM) in both kharif and rabi seasons. The enzyme activity of soils, which is governed by microbial population is also significantly higher in INM treatments. Our results demonstrate that soil enzymatic activity acted as a useful indicator of soil fertility dynamics. Enzymatic activities were positively and significantly correlated with content of organic carbon.
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