Effect of nitrogen and potassium levels on processing potato

Abstract

The field experiment was conducted during rabi season of the year 2012-13 at Potato Research Station, Sardarkrushinagar Dantiwada Agricultural University, Deesa with nine treatment combinations consisting of three levels of nitrogen viz., 225 kg N/ha, 275 kg N/ha and 325 kg N/ha and three levels of potassium viz., 225 kg K2O/ha, 275 kg K2O/ha and 325 kg K2O/ha tested under factorial randomized block design with four replications. The yield of “A” and “B” grade tubers was increased upto 275 kg N/ha. nitrogen levels brought significant variation in chips colour index and content of reducing sugar. In case of Potassium, Potassium levels 325 kg K2O/ha and 275 kg K2O/ha behaved equally and produced significantly higher weight of ‘A’ and ‘B’ grade tuber with minimum weight of ‘C’ grade tubers. Maximum reducing sugar content and chips color index score were observed with the application of 325 kg K2O/ha however increase was upto 275 kg K2O/ha. Thus, for getting higher production of processing grade tuber yield and net realization, potato cv., Kufri Chipsona-3 should be fertilized with 275 kg N/ha and 275 kg K2O/ha.