Revisited Fertilizer Doses for Sugarcane in North Coastal Andhra Pradesh for Replenished Soil and Crop Productivity
摘要
A field experiment was conducted consecutively for two plant crops of sugarcane at Regional Agricultural Research Station, Anakapalle, Andhra Pradesh and one year on-farm testing at farmers field with a variety 2001A 63 from 2016 to 2019 to revise the fertilizer doses for sugarcane plant crop. Among different fertilizer doses, significantly superior cane yields (81.48 and 86.18 t ha−1) and sugar yields (11.93 and 12.63 t ha−1) were recorded in T6, i.e., 168–100–120 kg NPK ha−1 + 25% recommended dose of Zn, S and B (12.5 + 7.5 + 2.5 kg ha−1) in M1 (without manure) and M2 (with manure, i.e., Farm Yard Manure @ 10 t ha−1) during first year. Cane and sugar yields were further increased in second year (cane yields of 86.48 and 89.68 t ha−1 in M1 and M2, respectively). Cane yield improvement to an extent of 12% was observed with refined fertilizer dose over existing recommendation (5.02 to 6.21 t ha−1) yield improvement in refined or revisited nutrient package over existing nutrient package, like wise sugar yield improvement of 0.41 to 1.08 t ha−1 was observed in refined recommendation over existing recommendation during first year and second year, respectively. Results clearly showed that, application of 168 kg nitrogen, 100 kg phosphorus, 120 kg potassium and basal application of micronutrients, i.e., 12.5 + 7.5 + 2.5 kg ha−1 of Zn, S and B along with farmyard manure @ 10 t ha−1 recorded significantly superior cane and sugar yields along with sustenance of soil fertility and cane juice quality for sugarcane plant crop in North Coastal Andhra Pradesh.