International Journal of Agronomy / 2011 / Article / Tab 2

Research Article

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

Table 2

Glufosinate effect on shoot, root, and nodule biomass, nitrogenase activity, and root respiration in glufosinate-resistant soybean under field conditions in 2009 and 2010. Data represent the mean of 3 and 12 d after early postemergence application in 2009 and 2010.

Application timingGlufosinate rate (g/ha)Dry biomass (mg/plant)Nitrogenase activity (μmol ethylene formed/plant/h)Root respiration (μmol CO2/plant/h)
NoduleShootRoot

EPOST04521334456.662.6
4504421064416.764.9
P0.980.870.870.590.14

LPOST07734355599.675.7
45077326050810.574.8
P0.980.350.230.590.78

Abbreviations: fb: followed by; EPOST: early postemergence applied at 3 wk after planting; LPOST: late postemergence applied at 6 wk after planting.

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