Department of Agricultural Chemistry and Soil Science, Udai Pratap (Autonomous) College, Varanasi, Uttar Pradesh, India
A field experiment was conducted during Kharif season of 2016 on research plot of Udai Pratap (Autonomous) College, Varanasi (U.P.) to study the effect of foliar application of boron at different stages of crop growth on rice (Oryza sativa L.). The experimental soil was sandy loam having available nitrogen 144 kg ha−1, available phosphorus 12.2 kg ha−1, available potassium 165 kg ha−1 and available (hot water extractable) boron 0.17 ppm. The experiment was carried out in randomized block design (RBD) with six treatments and three replications. Treatments were T0= RDF, T1= RDF + B @ 1.5% at TFG stages, T2= RDF+ B @ 1.5% at TF stages, T3= RDF + B @ 1.5% at TG stages, T4= RDF + B @ 2.0% at T stage, T5= RDF + B @ 1.5% at FG stages (RDF=Recommended dose of fertilizers, T= Tillering; F= Flowering; G= Grain filling). Significantly highest grain (42.0 q ha−1) and straw (94.87 q ha−1), yield was recorded with two foliar sprays @ 1.5% boron at tillering and grain filling stage as compared to control or other treatments. The same treatment also registered maximum nutrient (N, P, K and B) uptake by plant and grain.
Boron, Foliar Application, Rice, Nutrient Utilization
