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GrainGenes Reference Report: CPS-84-1213

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Reference	CPS-84-1213
Title	Seed quality response of soybean to weed control timing using glyphosate.
Journal	Canadian Journal of Plant Science
Year	2004
Volume	84
Pages	1213-1219
Author	Essah SYC Bishnoi UR
Abstract	Field and laboratory studies were conducted during 1997 and 1998 in the southeast United States to determine the influence of timing of glyphosate application on seed germination (standard germination and germination index) and vigor (cold test emergence, accelerated aged emergence, and seed conductivity) of three glyphosate-resistant soybean [ Glycine max (L.) Merr.] cultivars that belong to different maturity groups (MG). The soybean cultivars used were H4994 (MG IV - early maturing), H5164 (MG V - medium maturing) and H6686 (MG VI - late maturing). Weeds were controlled by glyphosate applied at 1.1 kg a.i. ha SUP -1 at 2, 3, 4, 5, 6, or 7 wk after soybean emergence (WAE). Using glyphosate to control weeds at 5 WAE or later in the early- and medium-maturing cultivars (H4994 and H5164) results in soybean plants able to produce seeds with more vigor and germinability than when weeds are removed earlier. For late-maturing cultivar H6686, weed control at 4 WAE produces seeds with higher germination and vigor than when weeds are removed later
Keyword	application date [ Show all 25 ]

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