RESIDUAL EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON RAJGIRA YIELD AND NITROGEN FRACTIONS IN SOIL UNDER MAIZE - RAJGIRA CROP SEQUENCE
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Date
2014
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AAU, Anand
Abstract
A field experiment was conducted at the Regional Research Station, Anand Agricultural University, Anand during 2012-13 on loamy sand soil to study the residual effect of integrated nutrient management on rajgira yield and nitrogen fractions in soil under maize – rajgira crop sequence. The important soil properties were pH – 7.8, EC2.5 – 0.15 dS m-1, organic C – 0.32 %, available N – 230 kg ha-1, available P2O5 – 28.0 kg ha-1 and available K2O – 310 kg ha-1. The rabi rajgira (var. Gujarat Amaranths – 1) was grown and treatments were replicated four times in a split plot design. The treatments comprised viz., Main plot - M1: 100 % RDF + 10.0 t FYM ha-1, M2: 100 % RDF + 3.0 t vermicompost ha-1, M3: 100 % RDF + 1.0 t castor cake ha-1, M4: 75 % RDF + 10.0 t FYM ha-1, M5: 75 % RDF + 3.0 t vermicompost ha-1, M6: 75 % RDF + 1.0 t castor cake ha-1 and Sub plot R1: 50% RDF and R2: 100% RDF. The treatments (M1 to M6) were applied to maize (kharif) only and residual effect was studied on rajgira (rabi), where as RDF treatments (R1 & R2) were applied to both maize and rajgira crops. The recommended dose of NP for maize was 60 kg N + 40 kg P2O5 ha-1 and for rajgira @ 40 kg N + 20 kg P2O5 ha-1.
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Keywords
agriculture, agril chemistry, soil science, study