STUDY ON NUTRIENT AVAILABILITY IN THE SOIL AMENDED WITH FLYASH AND ORGANIC MANURES AND ITS INFLUENCE ON GROWTH AND YIELD OF MAIZE (Zea mays L.)
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Date
2017-07-30
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UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
Abstract
An experiment entitled “Study on nutrient availability in the soil amended with flyash and organic manures and its influence on growth and yield of maize (Zea mays L.)” was conducted during the kharif of 2016 at Main Agriculture Research Station, Raichur. The experiment was laid out in RBD with 3 replications and eight treatment consisted of T1: Control, T2: Flyash @ 30 t ha-1, T3: FYM @ 10 t ha-1, T4: Muncipal compost @ 30 t ha-1, T5: Vermicompost @ 5 t ha-1, T6: Flyash @ 15 t ha-1 + FYM @ 5 t ha-1, T7: Flyash @ 15 t ha-1+ Muncipalcompost @ 15 t ha-1, T8: Flyash @ 15 t ha-1 + Vermicompost @ 2.5 t ha-1. For each treatment NPK @150:75:37.5 kg ha-1 + ZnSO4 @ 25 kg ha-1 applied. The results revealed that significantly higher grain and stover yield, nutrient uptake, water holding capacity, nutrient availability, microbial population, dehydrogenase activity, net returns and BC ratio were registered with application of (T7) flyash @ 15 t ha-1+ Muncipalcompost @ 15 t ha-1 followed by T6 and T8 compared to rest of the treatments. Application of fly ash and organic manures did not showed any significant effect on pH, EC, organic carbon, bulk density and porosity of soil as compared to application of flyash alone.
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