TY - JA AU - Haggar,J.P. AU - Beer,J.W TI - Effect on maize growth of the interaction between increased nitrogen availability and competition with trees in alley cropping SN - 1572-9680 U1 - 93-085156 PY - 1993/// KW - Biological competition KW - Biomass KW - AGROVOC KW - Costa Rica KW - Cropping systems KW - Erythrina KW - Gliricidia KW - Growth KW - Hedging plants KW - Nitrogen KW - Nutrient availability KW - Zea mays N1 - 18 refs.; Summary (En); Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0167-4366 T2 - Agroforestry Systems ER -