Impact of Integrated Nutrient Supply System Comprising Inorganic Fertilizers and Organic Manures on Growth and Yield of Wheat (Triticum aestivum L.) Crop

Abstract

A field experiment was conducted at the research farm of Abhilashi University Chail chowk Mandi in 2022-23 with the concept of “Studying the influence of integrated nutrient supply system, comprising inorganic fertilizers and organic manures of wheat (Triticum aestivum L.) crop”. The experiment was laid out in randomized block design with three replications and comprises eight treatments viz., T1-Absolute control, T2-125% NPK, T3-100% RDN+ 25% N through vermicompost, T4-75% RDN + 25% N through vermicompost, T5-50% RDN + 25% N through vermicompost + Biofertilizer (Azotobactor), T6-75% RDN + Biofertilizer (Azotobactor), T7-75% RDN + Azotobactor + PSB (Phosphate Solubilizing Biofertilizer) and T8-75% NPK + ZnSO4 @ 25 kg/ha + Azotobactor. The highest growth of wheat crop was achieved by adopting nutrient supply system through synthetic fertilizer under treatment T2-125% NPK which was significantly at par with T5 50% RDN+ 25% N through vermicompost + 25% N through Biofertilizer (Azotobactor), which also proved significantly superior to rest of the treatments. The minimum value of growth parameter was recorded under T1-Absolute control. Results also revealed that higher yield attributes viz. No. of effective tillers, Spike length, No. of spike, Grain per spike, test weight, were recorded under T2-125% NPK followed by 50% RDN+ 25% N through vermicompost+ 25% N through Biofertilizer (Azotobactor) and lowest were recorded under T1- Absolute control. Yields of crop viz. grain yield, straw yield, biological yield was also recorded highest under T2-125% NPK and lowest were recorded T1- Absolute control. On the basis of one season study, it can be safely concluded that the application of integrated nutrient supply system 50% RDN+ 25% N through vermicompost+ 25% N through Biofertilizer (Azotobactor) gave similar result as 125% NPK in terms of growth and yield.