Abstract
Background: Integrated nutrient management is considered as one of the major tools in agricultural production worldwide. Occupying 3.5% of gross cropped area (GCA), maize accounts for 2.3% of total fertilizer consumption. Despite its soil status, little is known about the application and dosage of integrated nutrient in the experimental hybrid maize crop in the region. Any strategy against this nutrient deterioration must have a good knowledge of the composition and application of integrated nutrient source utilized. The field study aimed to study the integrated nutrient management in hybrid maize of this region to evaluate the performance in growth, yield and nutrient related problems.Methods: A Field experiment was conducted during rabi season of 2018, at experimental farm, Department of Agronomy, Annamalai University, Chidambaram, Tamilnadu. India. Thirteen treatments with three replications were laid out in randomized block design. The treatments combinations were T1: Recommended dose of fertilizer (RDF) 135:62.5:50 kg N:P2O5:K2O ha-1, T2: RDF + Beema green granules (25 kg ha-1) as soil application, T3: 75% RDF + Beema green granules (25 kg ha-1) as soil application, T4: RDF + Uphaar (250gm ha-1) as foliar spray twice, T5: RDF + Beema green granules (25 kg ha-1) soil application + Uphaar (250gm ha-1) foliar spray twice, T6: 75% RDF + Beema green granules (25 kg ha-1) soil application + Uphaar (250gm ha-1) foliar spray twice, T7: RDF + Tracel (3.75kgha-1) foliar spray twice, T8: RDF + Beema green granules (25 kg ha-1) soil application + Tracel (3.75kg ha-1) foliar spray twice, T9: 75% RDF + Beema green granules (25 kg ha-1) soil application + Tracel (3.75kg ha-1) foliar spray twice, T10: RDF + Uphaar (250gm ha-1) first and Tracel (3.75kg ha-1) second foliar spray. T11: RDF + Beema green granules (25 kg ha-1) soil application + Uphaar (250gm ha-1) first and Tracel (3.75kg ha-1) second foliar spray, T12: 75% RDF + Beema green granules (25 kg ha-1) soil application + Uphaar (250gm ha-1) first and Tracel (3.75kg ha-1) second foliar spray, T13: RDF + water spray twice. The collected samples were statistically analyzed for cob length, cob diameter, grain no. /cob, grain yield, stover yield, available Nitrogen, Phosphorus and Potassium and Post-harvest nutrient status of Nitrogen, Phosphorus and Potassium. Result: Our investigation in the maize hybrid crop has confirmed us with unique results. Among the treatments RDF + Beema green granules (25 kg ha-1) soil application + Uphaar (250gm ha-1) first and Tracel (3.75kg ha-1) second foliar spray (T11) was highly significant with increased yield and yield attributes and was best in gross and net returns too. The present work will be a contribution to the comprehensive study of the integrated nutrient management in hybrid maize.
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