Journal
CANADIAN JOURNAL OF PLANT SCIENCE
Volume 81, Issue 2, Pages 351-354Publisher
AGRICULTURAL INST CANADA
DOI: 10.4141/P00-089
Keywords
crop rotation; weeds; forages; green manure crops
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Cropping records from 13 organic farms in the eastern Canadian prairies and one in North Dakota (1991 to 1996) were surveyed to determine crop rotation pattern, yields and soil nutrient status. Major crops included cereal grains, forages, and green manure legumes. Organic grain and forage yields averaged from one-half to almost double conventional yields. Soil N, K and S levels on organic farms were generally sufficient; however, levels of available soil P were deficient in several instances.
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