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Evaluation of Soybean Cultivars in Monoculture and Relay Intercropping Systems 1
Author(s) -
McBroom R. L.,
Hadley H. H.,
Brown C. M.,
Johnson R. R.
Publication year - 1981
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1981.0011183x002100050010x
Subject(s) - monoculture , intercropping , cultivar , biology , agronomy , avena , competition (biology) , cropping system , cropping , crop , agriculture , ecology
Cultivars of soybean [ Glycine max (L.) Merrill] were grown in monoculture and in relay intercropping systems at Urbana, Ill. in 1978 and 1979 and at DeKalb, Ill. in 1979 to determine if there is a genotype ✕ cropping system interaction that would require separate breeding programs for maximum progress in developing new cultivars for use in different systems. Relay intercropped soybeans were shorter, lodged less, and produced lower yields than soybeans grown in monoculture. No significant genotype ✕ cropping system interaction for yield was detected when soybeans were interplanted in small grains [winter wheat ( Triticum aestivum L.) or spring oats ( Avena sativa L.)] and planted in monoculture on the same day. Early season competition in intercropping was not sufficient in these experiments to cause differential performance among genotypes. Our results suggest that separate breeding programs are not required to develop cultivars for monoculture or intercropping.