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 |
A field experiment was conducted during kharif, 2015 at college farm, college of agriculture, Rajendranagar, Hyderabad to study the influence of various sources of zinc on soil enzyme activity. The experiment was laid out in Randomized Block Design with 12 treatments and 3 replications. The results of the experiments revealed that the highest urease activity at harvest was recorded in the treatment RDF+ Soil application of ZnSO4@25 kg ha-1 (370.3µg NH4 + released g-1 soil 2 hr-1), similarly in the acid and alkaline phosphatase activity highest value was seen in RDF+ Soil application of bio zinc@30 kg ha-1 (106.0, 183.7µg of p-nitrophenol g-1 soil hr-1). The highest dehydrogenase activity was recorded in RDF+ Soil application of bio zinc@30 kgha-1 (84.8 µg TPF produced g soil d-1) which was on par with RDF+ Soil application of ZnSO4@25 kg ha-1 (80.8 µg TPF produced g soil d-1). All the three enzyme activities were increased from the vegetative to panicle emergence stage and later showed decrease at harvest stage.
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