Glufosinate Effects on Nitrogen Nutrition, Growth, Yield, and Seed Composition in Glufosinate-Resistant and Glufosinate-Sensitive Soybean

Table 6

Effect of glufosinate application on seed composition in glufosinate-resistant, glyphosate-resistant, and conventional soybean in a field study at Stoneville, MS, 2009 and 2010^a.

Herbicide	Rate (g/ha)	Application timing	Soybean seed
			Protein; (g/kg)	Oil; (g/kg)	Oleic acid; (%)	Linoleic acid; (%)	Linolenic acid; (%)
Glufosinate-resistant soybean
No glufosinate	0		416^b	209^a	22.6^b	54.4^a	8.4^a
Glufosinate fb	450	EPOST	427^a	200^b	26.1^a	54.0^a	7.0^b
glufosinate	450	LPOST
Glyphosate-resistant soybean
No glufosinate	0		406^b	214^a	20.3^b	56.7^a	8.9^a
Glufosinate	45	EPOST	431^a	204^b	25.7^a	54.8^b	7.2^b
Conventional soybean
No glufosinate	0		414^b	221^a	20.2^b	56.2^a	8.9^a
Glufosinate	45	EPOST	434^a	212^b	25.6^a	54.3^b	7.7^b

Abbreviations: fb: followed by; EPOST: early postemergence applied at 3 wk after planting; LPOST: late postemergence applied at 6 wk after planting.
^aMeans within a column for each soybean type followed by the same letter are not statistically significant at the 5% level as determined by Fisher’s LSD test.