Response of rainfed maize (Zea mays) to nitrogen management in mid hill acidic soils of Sikkim
DOI:
https://doi.org/10.59797/ija.v56i3.4684Keywords:
Acidic soils, Azotobacter, Farmyard manure, Integrated nutrient management, Nitrogen schedulingAbstract
Two field experiments were conducted during 2005 and 2006 at Tadong, Sikkim to study the effect of nitrogen scheduling and integrated nutrient management on yield, nutrient uptake and economics of rainfed maize ( Zea mays L.) under nine schedules of nitrogen application and 11 combinations of urea, farmyard manure (FYM) and Azotobacter seed inoculation for integrated nutrient management. Amongst the various schedules of N application 1/3 N side-band placement (SBP) at sowing + 1/3 N SBP 25 days after sowing + 1/3 N SBP 50 days after sowing re- corded the highest grain yield (6.24 and 6.46 t/ha), NPK uptake (161.2 kg N/ha, 50.3 kg P/ha and 150.1 kg K/ha) and return/rupee investment (1.97). The yield increase was more pronounced with enhancement in proportion of N supply through urea from 40 to 80 kg N/ha and decrease in the quantity of farmyard manure from 20 to 10 t/ha. In- tegration of Azotobacter seed treatment + 10t FYM/ha + 40 kg N/ha 25 days after sowing + 40 kg N/ha 50 days af- ter sowing was the best treatment with the highest grain yield (6.77 and 6.93 t/ha), NPK uptake (168.4 kg N/ha, 49.0 kg P/ha and 154.7 kg K/ha) and return/rupee investment (1.99). Integrated nutrient management resulted in higher residual soil nutrients.References
Ashok Kumar, R.C., Gautam, Ranbir Singh and Rana, K.S. 2005_CIT_Growth, yield and economics of maize (Zea mays) - wheat (Triticum aestivum) cropping sequence as influenced by in- tegrated nutrient management. Indian Journal of Agricul- tural Sciences 75(11): 70911_CIT_Brar, B.S., Dhillon, N.S. and Chhina, H.S. 2001. Integrated use of farmyard and inorganic fertilizers in maize (Zea mays). In- dian Journal of Agricultural Sciences 71(10): 60507_CIT_Karki, T.B., Ashok Kumar and Gautam, R.C. 2005. Influence of in- tegrated nutrient management on growth, yield, content and uptake of nutrients and soil fertility status in maize (Zea mays). Indian Journal of Agricultural Sciences 75(11): 682 85_CIT_Nanjappa, H.V., Ramachandrappa, B.K. and Mallikarjun, B.O., 2001. Effect of integrated nutrient management on yield and nutrient balance in maize (Zea mays). Indian Journal of Agronomy 46(4): 698701_CIT_Pattanshetti, V.A., Agasimani, C.A. and Babalad, H.B. 2002. Effects of manures and fertilizers on yield of maize. Journal of Maharashtra Agricultural Universities 27: 20607_CIT_Rajeshwari, R. 2005. 'Integrated nitrogen management on growth and yield of maize (Zea mays L.)' MSc thesis, University of Agricultural Sciences, Dharwad. 76p_CIT_Sankhyan, N.K., Bharat, B., Sharma, P.K. and Bhasin, B. 2003. Ef- fect of phosphorus, mulch and farmyard manure on soil moisture and productivity of maize in mid hills of Himachal Pradesh. Research on Crops 2: 11617_CIT_Shivay, Y.S., Singh, R.P. and Shivakumar, B.G. 2002. Effect of ni- trogen on yield and quality of maize (Zea mays) in different cropping systems. Indian Journal of Agricultural Sciences 72: 161-63_CIT_Sihag, D., Singh, J.P., Mehla, D.S. and Bharadwaj. 2005. Effect of integrated use of inorganic and organic materials on the dis- tribution of different forms of N and P in soil. Journal of Indian Society of Soil Science 53(1): 804_CIT_Tolessa, D., Sharanappa, Sudhir. K., Sujith, G.M. and Debele, T_CIT_2001. Direct and interactive effects of farmyard manure and nitrogen levels on the productivity and nutrient uptake of maize. Karnataka Journal of Agricultural Sciences 14: 894 99_CIT_Wu, S.C., Cao, Z.H., Li, Z.G., Cheung, K.C. and Wong, M.H. 2005_CIT_Effects of biofertilizer containing N-fixer, P and K solubilizers and AM fungi on maize growth: a greenhouse trial. Geoderma 125(1-2): 15566.
