Effect of Various Level of Nutrient Application on Yield and Yield Attributing Characters of Wheat at Dehradun, India

Abstract A field experiment was conducted in the Agronomy research farm, Uttaranchal (PG) College of Bio-medical Sciences and Hospital, Dehradun during Rabi season to study effect of different NPK levels on growth and yield of wheat and work out relative economics of different levels of NPK. This field experiment was conducted to investigate the combined effect of different NPK (Nitrogen, Phosphorus and Potash) levels on the growth, yield and yield attributing characters of wheat cultivars PBW373. The thrice replicated treatments (T1: Control, T2:25% N2+50% P2O5+ 25% K2O, T3:50% N2+50% P2O5+50% K2O, T4:75% N2+50% P2O5+50% K2O, T5:100% N2+50% P2O5+50% K2O, T6:25% N2+100% P2O5+100% K2O, T7:50% N2+100% P2O5+100% K2O, T8:75% N2+100% P2O5+100% K2O, T9:100% N2+150% P2O5+150% K2O RDF) ha-1 were tested in Randomized Complete Block Design (RCBD). The results revealed that the highest growth, yield and yield attributing characters replied significantly to NPK fertilizers but access (higher dose than 100%) of Phosphorus and Potash shows negative results. It is resulted that highest growth was recorded with the treatment T5:100% N2+50% P2O5+50% K2O or application of (120-30-30) NPK Kg ha-1 and lowest conclude treatment combination was T1 (no fertilizer application). The highest days to maturity was recorded from treatment T5 while the lowest days to maturity was observed from treatment T1. Application of different NPK Levels on economics of wheat showed varied trend in benefit: cost ratio (B: C ratio). The maximum B: C ratio was obtained with treatment T2, while further increase in fertility levels obtained less B: C ratio followed by lowest rate of nutrient. The highest net return was obtained in the treatment T5 followed by treatment T2 and T3 respectively. It was due to the significantly higher grain and straw yield on treatment T5 crop than the other treatments, which resulted in higher net return and benefit cost: ratio. So it is concluded that the treatment T5 (100% N2+50% P2O5+50% K2O) shows best results on wheat crop and proved to the most remunerative dose. This study will enhance the nutrient use efficiency and fetch high and quality production of wheat in less cost of production without causing adverse effect on environment.

Keywords— Fertilizer, Growth, Nutrients, Soil fertility, wheat, Yield.

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International Journal of Environmental and Agriculture Research (IJOEAR)

ISSN: 2454-1850

Digital Object Identifier DOI: 10.25125/agriculture-journal

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