@article{bd0084237c1e4f99b9314b4214102bf7,
title = "Competition of the active roots of Cassia siamea Lam. and Zea mays L.(cv. Katumani Composite B) in an alley cropping trial in semi-arid Kenya",
keywords = "Agroforestry, Cassia siamea, Root competition, Semi-arid, Zea mays",
author = "G.O. Umaya and J.N.M. Macharia and J.C. Onyango and C.J. Stigter and C.L. Coulson",
year = "1999",
language = "English",
volume = "11",
pages = "462--467",
journal = "Journal of Environmental Sciences",
issn = "1001-0742",
publisher = "Elsevier",
number = "4",
}