~ 1042 ~ International Journal of Chemical Studies 2020; 8(2): 1042-1044 P-ISSN: 2349–8528 E-ISSN: 2321–4902 www.chemijournal.com IJCS 2020; 8(2): 1042-1044 © 2020 IJCS Received: 01-01-2020 Accepted: 03-02-2020 Laxman Kumawat Department of Soil Science & Agricultural Chemistry, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India Yogesh Kumar Department of Soil Science & Agricultural Chemistry, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India Pankaj Chaurasiya Department of Soil Science & Agricultural Chemistry, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India Archana Verma Department of Soil Science & Agricultural Chemistry, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India Corresponding Author: Laxman Kumawat Department of Soil Science & Agricultural Chemistry, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India Effect of organic nutrient sources on plant nitrogen, phosphorus and potassium content at different stages of wheat crop Laxman Kumawat, Yogesh Kumar, Pankaj Chaurasiya and Archana Verma DOI: https://doi.org/10.22271/chemi.2020.v8.i2p.8908 Abstract The investigation entitled Effect of Organic Nutrient Sources on Soil Health and Productivity of Wheat under Rice-Wheat System was carried out at the Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, (U.P) during Rabi seasons of 2017-18. The experiment consisting seven treatments viz. T1- Control, T2- 10 t ha -1 FYM, T3-10 t ha -1 FYM +Cow urine + Azotobacter, T4- 10 t ha -1 Vermicompost, T5- 10 t ha -1 Vermicompost+ Cow urine + Azotobacter, T6- 7.5 t ha -1 FYM+ Cow urine + Azotobacter, T7- 80% of RDF of nitrogen through vermicompost + 10% through neem cake + Azotobacter was laid out in randomized block design with three replication. Result show that T7 (80% of RDF of nitrogen through vermicompost + 10% through neem cake + Azotobacter) significantly higher plant Nitrogen, Phosphorus and Potassium content at tillering, jointing and at harvesting stage (grains and straw) over the control plot. Keywords: Vermicompost, Azotobacter phosphorus and wheat Introduction Wheat is one of the cereal crops which have its own importance due to high nutritional value and premier food grain crops of the country. In India, during green revolution period, intensive agriculture involving exhaustive high-yielding varieties of wheat and it has led to heavy withdrawal of nutrients from the soil. Nutrient management has played very significant role in providing the physical condition of soil and supply all the nutrients which are required by crop for balanced nutrition. Organic nutrient sources developed as an effective way to decrease environmental damage and increase awareness of food quality from using number of organic nutrient sources and ensure long term food security. Organic nutrients source combine scientific knowledge of ecology and technology with traditional farming practices based on naturally occurring biological processes. Instead of using synthetic pesticides and water soluble synthetically purified fertilizers, organic farmers are restricted by regulations to natural pesticides and fertilizers Materials and Methods A field experiment was conducted during rabi season 2017-18 at chirodi farm of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U.P.) The area situated at a latitude of 29o 40′ North and longitude of 77o 42′ East with an elevation of 237 m above mean sea level. The soil of the experimental field was well drained, alkaline in reaction (pH 7.25), low organic carbon, sandy loam in texture, low in available nitrogen, medium in available phosphorus and potassium with an electrical conductivity 0.29 dSm -1 . The experiment consisting seven treatments viz. T1- Control, T2- 10 t ha -1 FYM, T3-10 t ha -1 FYM +Cow urine + Azotobacter, T4- 10 t ha -1 Vermicompost, T5- 10 t ha -1 Vermicompost+ Cow urine + Azotobacter, T6- 7.5 t ha -1 FYM+ Cow urine + Azotobacter, T7- 80% of RDF of nitrogen through vermicompost + 10% through neem cake + Azotobacter was laid out in randomized block design with three replication. The required quantities of NPK (120:60:40) were applied in the different treatments by FYM, vermicompost, cow urine, neem seed cake.