Patel R, Dwivedi SK and Patel NK
A field experiment was conducted to study the effect of agro-input management practices on growth, nutrients status and energetics of Linseed at the Instructional cum Research Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh during Rabi (OctoberMarch) 2015-16. The data revealed that the seed rates did not give significant influence on plant population, plant height, seed yield and stover yield; however Crop Growth Rate and Relative Growth Rate at the time of harvest were significantly high. In case of energetics parameters, the higher values of energy output - input ratio (1018.76) and seed production efficiency (237.01) were resulted with the application of 30 kg ha-1seed rate. Whereas, application of recommended dose of fertilization (RDF)+farmyard manure placement in rows @ 5 t ha-1 (N3) recorded higher growth parameter viz. plant height 78.92 cm, 87.06 cm, and 88.44 cm at 60, 90 days after sowing (DAS) and at harvest, respectively, yield attributes viz. seed yield (2100 kg ha-1), stover yield (4885 kg ha-1) and energy input, net gain energy and energy output - input ratio (1039.34). The uptake of N, P and K were also observed significantly higher in the same treatment viz. 52.55, 18.36 and 77.24 kg ha-1 respectively. In case of foliar spray, application of 2% urea at 15, 40, 65 and 90 DAS (F3) gave higher growth parameter viz. plant height 78.92 cm, 86.89 cm and 88.37 cm at 60, 90 DAS and at harvest, respectively, yield attributes viz. seed yield (2089 kg ha-1), stover yield (4772 kg ha-1) and seed production efficiency (246.99). The uptake of N, P and K were also observed significantly higher in the same treatment viz. 50.99, 18.13 and 75.57 kg ha-1 respectively. Synergistic effect of seed rate 30 kg ha-1 (S2), RDF+FYM placement in rows @ 5 t ha-1 (N3) and foliar application of 2% urea at 15, 40, 65 and 90 DAS (F3)(S2×N3×F3) resulted in the higher seed production efficiency.
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