last final thesis of umer
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USDA, 2016. United States Department of Agriculture. Foreign Agricultural Service. Circular
series WAP 13-05. www.fas.usda.gov/wap/current/.
Usha, R. and Pandey, B.K. 2007. Origin and introduction of crop plants, cereals, and
pulses.Department of Botany, University of Delhi, India.
Vandermeer, J., 1989. "The Ecology of intercropping". University of Cambridge,Cambridge.
Verdelli, D., Acciaresi, H. A., and Leguizamón, E. S. 2012. Corn and Soybean in a Strip
Intercropping System: Crop Growth Rates, Radiation Interception, and Grain Yield
Components. International Journal of Agronomy. Vol. 2012: 1 – 17.
Vesterager, J., Nielsen, N., Hogh-Jensen, H., 2008. Effects of cropping history and phosphorus
source on yield and nitrogen fixation in sole and intercropped cowpea-maize systems.
Nutrient Cycling in Agroecosystems 80, 61-73.
Watiki, J.M., Fukai, S., Banda, J.A., Keating, B.A., 1993. Radiation Interception and Growth of
Maize/Cowpea Intercrop As Affected By Maize Plant-Density and Cowpea Cultivar. Field
Crops Research 35, 123-133.
Willey, R.W., 1979. Intercropping- its importance and research needs. Part 1: Competition and
yield advantages. Field crop abstract. 32, 1- 10.
Wogayehu Woku.2005. Evaluation of common bean (Phaseolus vulgaris L.) varieties
intercropped with maize (Zea mays L.) for double cropping at Alemaya and Hirna areas,
Eastern Ethiopia. M.Sc.Thesis Presented to Haramaya University. Haramaya, Ethiopia.
Wolfe, M.S., 1985. The current status and prospects of multilane cultivars and variety mixtures
for disease resistance. Annu. Rev. Phytopathol. 23, 251- 273.
www.csun.edu/%7Ehcbio027/biotechnology/lec10/lindemann.html.
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