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ThesisItem Open Access Influence of altering plant rectangularity by varying plant spacing on the performance of chickpea varieties in late sown conditions of Uttarakhand tarai(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-09) Arya, Anita; Singh, V.K.A field experiment was conducted during the rabi season of 2017-18 and 2018-19 at N. E. Borlaug Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) to study the ‘Influence of Altering Plant Rectangularity by Varying Plant Spacing on the Performance of Chickpea Varieties in Late Sown Conditions of Uttarakhand Tarai. The soil of the experimental site was silty clay loam in texture being medium in available nitrogen (315.2 and 321.6 kg/ha), high in available phosphorus (26.6 and 27.8 kg/ha), medium in available potassium (261.2 and 267.3 kg/ha), and high in organic carbon (0.83 and 0.87 %) contents with neutral in reaction (pH 7.30 and 7.46) in 2017-18 and 2018-19, respectively. The experiment consisting of 12 treatments, having three chickpea varieties (PG 186, PG 4 and PG 5) and four rectangularities viz; 0.16, 0.33, 0.50 and 0.66 with a constant row spacing of 30 cm were set out in randomized block design with three replication. Results revealed that different varieties of chickpea were brought significant effect on plant height, number of branches, number of leaflets, plant spread, dry matter accumulation, CGR, number and dry weight of nodules, days taken to 50 per cent flowering and maturity, yield attributes, grain yield, straw yield, biological yield, protein yield, N, P, K uptake by crop and economics of crop growing. Varieties had no significant effect on plant population, mortality percentage, RGR, protein content and N, P, K content in grain and straw. Chickpea variety PG 5 outyielded remaining varieties in terms of all these parameters. Different plant spacings/rectangularity had significant effect on plant population, mortality percentage, plant height, number of branches, plant spread, dry matter accumulation, CGR, number and dry weight of nodules, yield attributes, grain yield, straw yield, biological yield, protein yield, N, P, K uptake by crop and economics were influenced significantly, but had no significant effect on plant number of leaflets, RGR, days taken to 50 per cent flowering and maturity protein content and N, P, K content in grain and straw. The crop sown on 5 cm (0.16) plant spacing/ rectangularity in general, proved to be the best proposition in boosting the yield attributes, and the grain and protein yields of the chickpea in late sown condition. Interaction of chickpea varieties and plant spacing/ rectangularity also had significant effect on dry matter accumulation per plant, pods per plant, 100 grain weight, grain yield per plant, grain, straw and biological yield per hectare, protein yield and total N, P, K uptake by crop. The net return as well as B: C ratio remained higher with sowing of chickpea variety PG 5 at plant spacing/ rectangularity of 5 cm (0.16) in tarai region of Uttarakhand especially for late sown conditions.ThesisItem Open Access Optimization of planting time and geometry for Indian mustard RH 749, under tarai conditions of Uttarakhand(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-06) Arya, Anita; Shukla, Anil
