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|Authors:||BHIMRAO, MISS KALE YOGITA|
|Title:||EFFECT OF LEVELS OF VERMICOMPOST AND SCEPTER HERBICIDE ON SOIL ENZYMES AND NUTRIENT AVAILABILITY IN SWELL-SHRINK SOIL|
|Publisher:||MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI, DIST. AHMEDNAGAR (MAHARASHTRA), INDIA|
|Abstract:||In order to study the effect of vermicompost and scepter herbicide on soil enzymes and nutrient availability in swell-shrink soil, an incubation study was conducted under laboratory conditions. The research work was accomplished at the Department of Agricultural Chemistry and Soil Science, Post-Graduate Institute, MPKV, Rahuri during 1998-99. The study comprised three levels each of vermicompost, viz., 0, 10 and 20 Mg ha1 and scepter herbicide viz., 0, 150 and 300 g ai. ha"1 replicated thrice in factorial complete randomised design. The results revealed that the available nitrogen, phosphorus and potassium; exchangeable calcium and magnesium; DTPA-extractable micronutrient (Fe, Mn, Cu and Zn) and soil enzymes viz., acid phosphatase and urease increased significantly with the application of vermicompost. Available nitrogen, exchangeable magnesium, DTPA-extractable manganese and zinc, acid phosphatase and urease activity in soil decreased with herbicide application. Copper content decreased with the application of herbicide at higher rate only. Available phosphours, exchangeable calcium and iron increased upon herbicide application. Available potassium did not show any consistent trend with herbicide application. Interaction effect of herbicide and vermicompost on macro/micro nutrients and soil enzymes was found to be significant with medium to long duration of incubation without a definite trend. Available nitrogen and phosphorus were positive^correlated with acid phosphatase enzyme. There was significant positive correlation between urease enzyme and acid phosphatase enzyme with application of vermicompost and herbicide. Available phosphours showed negative correlation with DTPA-extractable iron and manganese with herbicide application.|
|Appears in Collections:||Thesis|
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