Author(s):

Tanmoy Bhowmik, Dr. AK Bhardwaj and Sanyogita Chaudhury

Abstract: A field study was investigated in 2016-17 at G.B. Pant University of Agriculture and Technology, Pantnagar, to study the effect of drip irrigation on nutrient uptake and nutrient use efficiency of wheat (Triticum aestivum). The experiment was carried out in RBD with eight treatments and four replications. Results revealed that the uptakes of nutrients (NPK) were significantly higher recorded in T₅ (N- 130.86 kg ha⁻¹, P- 31.47 kg ha⁻¹ and K- 144.50 kg ha⁻¹) and lower in T₂ treatment (N- 96.13 kg ha⁻¹, P- 19.68 kg ha⁻¹ and K- 109.46 kg ha⁻¹). Result further revealed that use efficiency of nutrients was higher in the treatments of T₅ (23.30) and T₄ (22.18) where water supply with 100 and 75% CPE respectively through drip irrigation at two days interval. Maximum nitrogen use efficiency was observed in T₅ (19.58, 0.51 and 37.85) in terms of AEN, REN and PEN. Highest grain yield was found in T₅ (5825 kg ha⁻¹). In terms of economy highest B: C ratio was obtained with treatment T₅ (3.57).Compare to farmer practice (T₂) all the drip irrigated treatments results significant benefit in terms of nutrient use efficiency and economy.

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