Alam, ParwaizKumari, Pratima2017-06-102017-06-102016http://krishikosh.egranth.ac.in/handle/1/5810019284FOLIAR APPLICATION OF NUTRIENTS ON PRODUCTIVITY OF SOYBEANSoybean is worldwide growing important oilseed crop. It is the cheapest source of plant protein for poor people but availability of protein for ever increasing population remained too less. To meet out this increasing demand farmer use more and more chemical fertilizer through soil application to increase productivity. Abundant use of chemical fertilizer degrade the soil physico-chemical properties resulted in nonavailability of nutrients to the plants. In order to avoid or minimize the severity of such condition, foliar application of nutrients is imperative. Keeping these points in view, an experiment entitled “Foliar application of nutrients on productivity of soybean” was conducted at BAU experimental farm (Kanke), Ranchi, Jharkhand during Kharif season 2015 on sandy loam soil with low organic carbon (4.10 g/kg) and available nitrogen (192.5 kg/ha), moderately acidic (pH 5.1) in nature, medium potassium (128 kg/ha), phosphorus (13.65 kg/ha), boron (0.58 mg/kg), molybdenum (0.25 mg/kg) and zinc (0.60 mg/kg). The experiment was laid out in a RBD with 9 treatments: T1- RDF + water spray, T2- RDF + urea 2% spray, T3- RDF + DAP 2% spray, T4- RDF + MOP 0.5% spray, T5- RDF + 19:19:19 (N:P2O5:K2O) 2% spray, T6- RDF + molybdenum 0.5% spray, T7- RDF + boron 0.5% spray, T8- RDF + zinc chelated 0.5% spray and T9- RDF only and replicated thrice. Results revealed that the productivity of soybean was influenced by foliar application of nutrients. Among application of nutrients, RDF along with molybdenum 0.5% spray produced higher dry matter (795.52 g/m2), nodule count (15/plant) at 60 DAS, branches per plant (2.33), pods/plant (31) resulted in higher grain (1524 kg/ha) and straw (2062 kg/ha) yield, which was significantly higher than all other treatment but it was at par with RDF + zinc chealted 0.5% spray and RDF + 19:19:19 (N:P2O5:K2O) 2% spray. Total N (112.80 kg/ha), P (10.55 kg/ha), K (39.72 kg/ha), B (85.92 g/ha), Mo (7.29 g/ha) and Zn (76.17 g/ha) uptake were also found highest with foliar application of molybdenum 0.5% along with RDF. However, foliar application of zinc chelated 0.5% spray along with RDF gave highest net return (22630 `/ha) and benefit: cost ratio (1.19). Based on the result of present investigation, it may be concluded that foliar application of zinc chelated 0.5% spray along with RDF proved to be more productive and economically viable for soybean cultivation.en-USnullThesis