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Optimizing the NPK application in white mustard (Sinapis alba L.) under an arid climate in Punjab, Pakistan

Sher, Ahmad, Sattar, Abdul, Qayyum, Abdul, Ijaz, Muhammad, Nawaz, Ahmad, Manaf, Abdul, Hussain, Mubshar
Journal of plant nutrition 2019 v.42 no.13 pp. 1556-1565
NPK fertilizers, Sinapis alba subsp. alba, arid zones, cooking fats and oils, crops, farmers, fertilizer application, nitrogen, phosphorus, potassium, profitability, rapeseed, seed yield, Pakistan
The production of oil from the conventional oilseed seed crops (viz. mustard, rapeseed) is not sufficient to meet the demands of Pakistani people. Due to this reason, a surplus quantity of oil is imported every year from different countries to fulfill the domestic demands of the cooking oil. This 2-year study was aimed to optimize the dose of NPK for profitable production of white mustard. Nitrogen (0, 60, 90 kg ha⁻¹), phosphorous (0, 30, 60 kg ha⁻¹) and potassium (0, 75, 100 kg ha⁻¹) were applied in various combinations. The results indicated that highest seed yield and profitability was recorded with NPK at 90–60–100 kg ha⁻¹, which was attributed to improvement in crop growth. In crux, application of NPK at pre-optimized rate might be a viable option to improve the growth, yield, oil quality, and economics of white mustard production under arid climates in Pakistan. According to the results, a balanced use of NPK fertilization is a key management strategy for white mustard growing farmers of arid region.