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Yield Performance of Wheat under Split N Application Rates and Timing

Yield Performance of Wheat under Split N Application Rates and Timing

Khurram Shahzad and Mohammad Akmal*

Department of Agronomy, The University of Agriculture Peshawar, Khyber Pakhtunkhwa, Pakistan.

ABSTRACT

Wheat (Triticum aestivum L.) is major food crop of Pakistan. The soil status of Pakistan is relatively poor in N and organic matter contents. Because of changing rainfall patterns due to changes in the weather conditions and/or climatic change responses observed in the world, the split application of N is beneficial to the crops in terms to avoid N-mobility in the soil and improve its use efficiency for crops. This study, therefore, aimed to identify split applicarion of N rates and timings for wheat performance in recent weather condiction. Experiment was conducted at Agronomy Research Farm, The University of Agriculture Peshawar in 2015-16 in a randomized complete block (RCBD) design with four replications. Seedbed was prepared as recommended for wheat, planting was made with basic seeds (cv. Pakhtunkhwa) using seed drill in rows spaced 0.25 m equal distances. Recommended rates of phosphorus and potassium were applied yielding 90 and 60 kg ha-1respectively while the N-application rates (i.e. NAR 0, 100, 120, 140 and 160 kg ha-1) were added with different N application timings (i.e. NAT1100% at seedbed, NAT2 50% at sowing and 50% 70 days after sowing (DAS), NAT3 25% at sowing, 50% + 70 DAS and 25% at anthesis 110 DAS and NAT4 25% at sowing, 25% 70 DAS and 50% 110 DAS). Results revealed relatively better plant health and traits at 140 kg ha-1 when NAR was applied as treatment NAT2 and NAT3 as compared to any other application timings. Treatment 140 kg N ha-1 showed the highest grain and biomass yield of wheat in a cereal based cropping system i.e. maize-wheat in rotation. The results concluded that wheat crop fertilized with 140 kg ha-1 preferably in three splits for sustainable farming system for Peshawar climate and surroundings.

 

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Sarhad Journal of Agriculture (Associated Journal)

September

Vol. 33, Iss. 3, Pages 338-500

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