Abstract
A field experiment was conducted at the experimental field of agronomy division, Research Farm of Genda Singh Sugarcane Breeding and Research Institute, Seorahi, Uttarpradesh for two consecutive years i.e. 2016–17 and 2017–18 to test the efficiency of PSAP in improving the growth, juice purity and established the cost benefit ration of PSAP for farmer and sugar industry. The experiment was laid out in randomized block design having seven treatments viz. ((T1-100 per cent recommended dose of NPK, T2-100 per cent recommended dose of NPK+4 kg PSAP per acre through one drenching at 45 DAP and four foliar sprays at 60, 75, 90 and 105 DAP, T3-100 per cent recommended dose of NPK+4 kg PSAP per acre through five foliar sprays at 45, 60, 75, 90 and 105 DAP, T -100 per cent recommended dose of NPK+5 kg PSAP per acre through one drenching at 45 DAP and four foliar sprays at 60, 75, 90 and 105 DAP, T5-100 per cent recommended dose of NPK+5 kg PSAP per acre through five foliar sprays at 45, 60, 75, 90 and 105 DAP, T6–100 per cent recommended dose of NPK+6 kg PSAP per acre through one drenching at 45 DAP and four foliar sprays at 60, 75, 90 and 105 DAP and T -100 per cent recommended dose of NPK+6 kg PSAP per acre through five foliar sprays at 45, 60, 75, 90 and 105 DAP) replicated thrice with gross plot size of 7.50m × 5.40m. Sugarcane cultivar UP 05125 was planted at 90 cm row spacing. The experimental findings on the basis of pooled data of two years analyzed that effect of PSAP on number of internodes per cane was obtained statistically non significant but maximum number of internodes (24.42 per cane) was produced in application of 6 kg per acre PSAP through five sprays. Control (T1) plot recorded significantly lower value of plant height (325.50 cm) and juice purity (87.28 per cent) as compare with 100 per cent recommended dose of NPK+6 kg PSAP per acre through five foliar sprays at 45, 60, 75, 90 and 105 DAP. Economically affected by PSAP treatments however, T treatment obtained significantly statistically higher gross income (Rs.295043 ha−1), net income (Rs.156639 ha−1) and benefit cost ratio (1.13) over control treatment (Rs.217475 ha−1, 90159 ha−1 and 0.71, respectively). While compared between spraying and drenching performance of PSAP, resulted better performance in five spraying at 45, 60, 75, 90 and 105 day after planting in term of growth and economics.
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