Author(s):

Swati Mehta and Dr. Rajeev Bharat

Abstract: An experiment entitled, “Effect of integrated use of nano and non-nano fertilizers nutrient use efficiency of wheat (Triticum aestivum L.)” was conducted at the research farm of Farming System Research Centre of Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha during the rabi season of 2015-2016. The experimental results revealed that among the applied treatments, T₈ (50% NPK + Nano NPK (L) sprays at 20, 30 & 45 DAS @ 3 ml/litre of water + 2 Nano-K (L) sprays at grain development stage at 110 and 125 DAS @ 4 ml/litre of water) recorded maximum nitrogen use efficiency and the minimum nitrogen use efficiency was recorded in treatment T₁ (RDF whereas in case of Phosphorus use efficiency, among the applied treatments, T₆ (75% N + 50% P₂O₅ + 100% Nano-K (G) @ 62.5 kg/ha + Nano NPK (G) @ 37.5kg/ha + 2 Nano NPK (L) sprays at 25 and 45 DAS @ 3ml/litre of water + 2 Nano-K (L) sprays at grain development stage at 110 and 125 DAS @ 4 ml/litre of water) recorded maximum phosphorus use efficiency and the minimum phosphorus use efficiency was recorded in treatment T₄ (75% N + 100% P₂O₅ + 50% K + 50% Nano-K(G) @ 31.25 kg/ha + 2 Nano-K (L) sprays at grain development stage at 110 and 125 DAS @ 4 ml/litre of water). Potassium use efficiency was recorded maximum in treatment T₂ (100% N + 100% P₂O₅ + 100% Nano-K (G) @ 62.5 kg/ha) and the minimum potassium use efficiency was recorded in treatment T₁ (RDF).

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