Author(s):

Vikash Kumar, Pradeep Mishra, Sidharth Shankar Bhatt, Sukhpal Singh, Rahul Kumar Singh and Chandan Kumar Singh

Abstract: A field experiment was conducted during the winter (rabi) season of 2015-16 to study the Impact of nitrogen and zinc on quality, yield and economics of potato (Solanum tuberosum L.) cultivar Kufri Himsona at selaqui, Deharadun. Testing the experiment near normal in pH and EC, Medium Organic Carban, low in available N, high in available P and medium available K, low in available Zn. The experiment was laid out in Randomized block design with four Nitrogen levels viz. 0, 150, 200 and 250 kg ha^-1 in main plot in Combination with twelve nutrient treatments (T₁: N₀+Zn₅, T₂: N₀+ Zn₁₀, T₃: _N0 + Zn₁₅, T₄: N₁₅₀ + Zn₅, T₅: N₁₅₀ + Zn₁₀, T₆: N₁₅₀ + Zn₁₅, T₇: N₂₀₀ + Zn₅, T₈: N₂₀₀ + Zn₁₀, T₉: N₂₀₀ + Zn₁₅, T₁₀: N₂₅₀ + Zn₅, T₁₁: N₂₅₀ + Zn₁₀ and T₁₂: N₂₅₀ + Zn₁₅) in the sub-plots with three replication. Result show that 200 kg N ha^-1 and 15 kg Zn ha^-1 recorded the highest tuber yield, Dry matter content in tuber, good quality of tuber colour and reducing sugar which were significantly better than 150 and 250 kg nitrogen and 5, 10 kg Zinc accept 0 kg nitrogen kg ha^-1. Highest nitrogen content and zinc content in potato plant recorded with application of 250 kg ha^-1 which was at par with 200 kg N ha^-1.

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