Integrated nitrogen management in wheat (Triticum aestivum) Singh R.K.*,1, Singh Sandip Kumar2, Singh L.B.3 Raja Balwant Singh College, Dr B.R. Ambedkar University, Bichpuri, Agra, Uttar Pradesh 283 105. *Corresponding author.
Present address: 1Krishi Vigyan Kendra, Etawah, Uttar Pradesh 206 001. 2Division of Environmental Science, IARI, New Delhi, 110 012. 3Agricultural Technology Information Centre, CSAUAT, Kanpur, Uttar Pradesh 208 002. Abstract A field experiment was conducted at Bichpuri, Agra during the winter season of 2000–01 and 2001–02 to study the effect of biofertilizers, and organic and chemical nitrogen as well as their combination on growth, yield and uptake of nitrogen by wheat (Triticum aestivum L. emend. Fiori & Paol.). The treatments consisted of biofertilizer (Azotobacter and Azospirillum), organics (FYM @ 5 t/ha) and 3 levels of nitrogen (50, 100 and 150 kg N/ha), and their combinations (i.e. 50 kg N/ha + Azotobacter, 50 kg N/ha + Azospirillum + FYM @ 5 t/ha); one unfertilized control was also included for comparison. The integrated use of inorganic fertilizer, biofertilizer and organics enhanced the growth and yield of wheat. Higher plant height and yield attributes were recorded in 50 kg N/ha + Azospirillum + FYM @ 5 t/ha, followed by 150 kg N/ha. Further, seed and stover yields of wheat enhanced significantly at higher levels of N and integrated use of organic and bio-fertilizers. However, the highest yield attributes were recorded at 150 kg N/ha. The uptake of total nitrogen by wheat was significantly higher at 150 kg N/ha than at 50 kg N/ha + Azospirillum + FYM @ 5 t/ha. Top Keywords Azospirillum, Azotobacter, Biofertilizer, FYM, Integrated fertilizers, Urea, Wheat productivity. Top |