Productivity and Economic Assessment of Maize and Soybean Intercropping under Various Tillage and Residue Levels in Chitwan, Nepal

N. Khatri^1, , K.R. Dahal¹, L.P. Amgain² and T.B. Karki²

¹Institute of Agriculture and Animal Science, Rampur, Chitwan, Nepal

²Nepal Agricultural Research Council, National Maize Research Program, Rampur, Chitwan, Nepal

Cite this paper

N. Khatri, K.R. Dahal, L.P. Amgain and T.B. Karki. Productivity and Economic Assessment of Maize and Soybean Intercropping under Various Tillage and Residue Levels in Chitwan, Nepal. World Journal of Agricultural Research. 2014; 2(6A):6-12. doi: 10.12691/WJAR-2-6A-2

Abstract

A field experiment was conducted at National Maize Research Program (NMRP) in Rampur, Chitwan, Nepal during May-Nov 2013. The experiment was laid out in strip- split design with twelve treatments and three replications. Treatments consisted of two different tillage methods namely conventional tillage (CT) and zero tillage (ZT) as vertical factor, two different levels of residue (residue kept and residue removed) as horizontal factor and three different levels of cropping systems namely sole maize, sole soybean and maize + soybean intercropping system as sub plot factor. Manakamana-3 and Puja were the variety of maize and soybean used for the experiment respectively. The results revealed that the grain yield and yield attributing components of maize and soybean was significantly influenced by cropping systems but not by tillage methods and residue levels. The grain yield of maize obtained under sole cropping (4.76 t ha^-1) was significantly higher than maize + soybean intercropping system (4.27 t ha^-1). Similarly, the grain yield of sole soybean was significantly higher (1.99 t ha^-1) than that of maize + soybean intercropping system (1.26 t ha^-1). Moreover, the total grain yield equivalent of 6.45 t ha^-1 obtained from sole soybean system was significantly higher and was followed by maize and soybean intercropping system with 4.99 t ha^-1. Whereas, sole maize produced significantly the lowest maize grain yield equivalent of 3.47 t ha^-1. Significantly, higher LER (1.38) was recorded with maize and soybean intercropping system over sole system (1.0). Tillage and residue levels did not affect the gross and net return and B: C ratio but the effect was found obvious due to intercropping system. Significantly higher net return (NRs.140.49 thousands ha^-1) was recorded in intercropping of maize with soybean as compared to sole soybean (NRs. 89.85 thousands ha^-1) which was at par with sole maize system (NRs. 80.91 thousands ha^-1). Maize and soybean intercropping system produced significantly the higher (2.47) B: C ratio than sole soybean (2.28) and was at par with sole maize (2.18).

Keywords

maize, soybean, tillage, residue, intercropping, yield

Copyright

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References

[1]	Cassel, D.K., C.W. Raczkowskiand H.P. Denton. 1995. Tillage effects on corn production and soil physical conditions. American Journal of Soil Science society 59: 1436-1443.
[2]	MoAD. 2012. Stastistical information on Nepalese agriculture, Government of Nepal. Ministry of Agriculture and Development, Agribusiness Promotion and Stastistics Division, Singha Durbar, Kathmandu, Nepal.
[3]	MoAD. 2013. Stastistical information on Nepalese agriculture, Government of Nepal. Ministry of Agriculture and Development, Agribusiness Promotion and Stastistics Division, Singha Durbar, Kathmandu, Nepal.
[4]	Reddy, T. Y. and G. H. Reddi. 2002. Principles of Agronomy (2nd ed.). Kalayani Publisher, New Delhi, India. 522p.
[5]	Tangadulratana, R. 1985. Effect of tillage system, weed control and fertilizer application methods on growth and yield of maize (Zea mays L.). Kasetsart University, Bangkok. Graduate School, MLKU/TH (Thailand).
[6]	Thole, A. 2007. Adaptability of soybean (Glycine max L.) varieties to intercropping under leaf stripped and detasselled maize (Zea mays L.). M.Sc. Thesis in crop science submitted to Faculty of Agriculture, University of Zimbabwe. P 26.
[7]	Undie, U. L., D. F. Wah and E. E. Attoe. 2012. Effect of intercropping and crop arrangement on yield and productivity of late season maize/soybean mixtures in the humid environment of south southern Nigeria. Journal of Agricultural Science 4:41-42.
[8]	Willey, R. W. 1979. Intercropping: its importance and research needs. Part I. Competition and yield advantages. Field Crops Abstract 32: 1-10 pp.
[9]	Wright, G. C., C. J. Smith and I. B. Nelson. 1988. Growth and yield of soybean under wet soil culture and conventional furrow irrigation in South-Eastern Australia. Irrigation Science 9: 127-192.