Field experiments in vertisols of low, medium and high available soil phosphorus status were conducted to study the response of graded levels of P application to sunflower hybrid (KBSH-1). Effect of P to sunflower in increasing yield and yield attributes was more pronounced in low P status soil. Response equations for seed yield of sunflower at an applied P level have been worked out. Nutrient use efficiency and productive efficiency were also computed. Soil available P status was found to vary significantly only in low P status. Critical P level in soil was found to be 20 kg P ha-1 , below which sunflower may respond to phosphorus application.

A field experiment was conducted to study the influence nutrient levels and plant growth regulators on harvest index and economics of soybean [Glycine max (L.) Merrill] during kharif 2017. The experiment was laid out using randomized complete block design (factorial concept) with 14 treatments including control and replicated thrice. The treatments consisted of two nutrient levels 125 % RDF and 100 % RDF, six plant growth regulator (PGR) dosages: salicylic acid @ 50 and 100 ppm, ethrel @ 100 and 200 ppm, chlormequat chloride (CCC) @ 250 and 500 ppm; independent control: RPP, without PGR spray and RPP + KNO 3 @ 1 %. PGRs were sprayed at 25 and 40 DAS. Results shows that application of 125 % RDF + chlormequat chloride @ 500 ppm at 25 and 40 days after sowing (DAS) as foliar spray. The results revealed that application of 125 % RDF + chlormequat chloride @ 500 ppm was optimum to get higher yield (26.31 q ha -1 ), harvest index (46.6 %) and net return ( 64,714 ha -1 ) with B:C (3.15), followed by 125 % RDF + ethrel @ 200 ppm (23.70 q ha -1 , 46.03 %, 56,146 and 2.92, respectively). K e y w o r d sChlormequat chloride, Ethrel, Harvest index, Net return, BC ratio

A field experiment was conducted during rabi season of 2017 at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, to study different row ratio of chickpea and mustard on growth, yield and quality of mustard. The experiment was conducted in randomized block design with two sole crops of chickpea and mustard including eight different row ratio of chickpea + mustard (2:1, 3:1,3:3, 4:2, 4:4, 5:1, 6:2 and 8:2). Results indicates that, sole mustard recorded higher growth parameters viz. plant height, leaf area, number of branches primary and secondary per plant, dry matter and higher seed, straw yield and harvest index. Among intercropping, higher growth attributes were found in 5:1 row ratio. Significantly higher seed (1128 kg ha-1), straw yield (2294 kg ha-1) and harvest index (27.62 %) was found in 4:4 ratio, followed by 3:3 row ratio. Higher oil content (35.16 %) and oil yield (606 kg ha-1) was recorded in sole mustard.

No abstract

No abstract