Response of Rapeseed to Applied Nitrogen, Phosphorus, Potassium and Sulfur When Grown above 57 Degrees North Latitude

Anderson, C.H.; Kusch, A.G.

Canadian Journal of Plant Science 48(6): 611-616


ISSN/ISBN: 0008-4220
DOI: 10.4141/cjps68-115
Accession: 068493776

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In a two-year study at three soil sites, 14 fertilizer treatments were applied to rapeseed grown on summerfallow. Phosphorus applied singly or in combination with N, with N and K, or with N, K and S significantly increased seed yields on a Rego Humic Gleysol soil of low p H status and on an Orthic Dark Gray Wooded soil of high available N content; there was no fertilizer response on a Rego Gleysol soil of variable texture and high available P content. While rapeseed did not respond to N alone, additional benefits did sometimes accrue from the addition of 11 kg/ha of N to P applications.