Companion crop, herbicide and weed effects on establishment and yields of alfalfa-bromegrass mixture

Autor:	A. L. Darwent, D. E. Cole, D. C. Maurice, James R. Moyer
Rok vydání:	1995
Předmět:	Bromus inermis Forage Intercropping Plant Science Horticulture Biology Weed control biology.organism_classification Crop chemistry.chemical_compound Agronomy chemistry 2 4-DB Hordeum vulgare Weed Agronomy and Crop Science
Zdroj:	Canadian Journal of Plant Science. 75:121-127
ISSN:	1918-1833 0008-4220
DOI:	10.4141/cjps95-020
Popis:	Alfalfa (Medicago sativa L.) and bromegrass (Bromus spp.) were seeded with and without a companion crop and with and without herbicides at Westlock and Lethbridge, Alberta, to assess the effect of weed control, companion crop and the herbicide-by-companion crop interaction on forage establishment and subsequent yields. A companion crop reduced both alfalfa and bromegrass yields for at least 2 yr after establishment on a rain fed site at Westlock and for 1 yr after establishment on an irrigated site at Lethbridge. At both sites, weed yields were higher after establishment with a companion crop than after establishment without a companion crop. Unchecked weeds in the establishment year had less effect than a companion crop on subsequent forage yields. At both locations, weed biomass in the establishment year was less than that of the companion crop. The combined stress of a companion crop and 2,4-DB application had a detrimental effect on alfalfa yield for 3 yr after establishment at Lethbridge. Key words: Wheat, barley, wild oat, redroot pigweed, dandelion
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e8d3e0e752ea628b107cdf8e9dee206b https://doi.org/10.4141/cjps95-020 Zobrazit plný text záznamu