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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 carried out at college of Agriculture, Navile, Shivamogga during kharif 2016 to study Effects of fertilizer P additions on available P, microbial biomass - P and phosphatase enzyme activity under maize (Zea mays L.) in P rich acid soils with and without seed treatment. The levels of P @ 0, 30, 45, 60 and 75 kg P2O5 per ha-1with or without PSB seed treatment was tried in a randomized complete block design with three replications and eleven treatments. The results of the experiment indicated that seed treatment with PSB and higher levels of P significantly higher values of available P, saloid-P and Ca-P status in soil were recorded with 75 kg P2O5 per ha-1 with PSB seed treatment at different crop growth stages. Higher values of Al-P, Fe-P, reductant-P, occluded-P, organic-P and total-P fractions were recorded in treatments involving P levels without PSB seed treatments. Treatment receiving 75 Kg P2O5 per ha-1 without PSB seed treatment recorded higher Al-P, Fe-P, reductant-P, occluded-P, organic-P and total-P fraction values. The occurrence of forms of P were in the order of total P > organic P > reductant soluble P >>Fe-P>Al- P > occluded P > saloid P > Ca-P.