International Journal of Agronomy / 2011 / Article / Tab 4

Research Article

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

Table 4

Glufosinate effect on shoot, root, and nodule biomass, nitrogenase activity, and root respiration in conventional (glufosinate and glyphosate sensitive) soybean under field conditions in 2009 and 2010.

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

20093 DAT07312483153.529.4
454912002733.731.0
P0.220.820.310.630.39
12 DAT08132616387.149.5
457734756566.554.1
P0.680.420.620.500.32

20103 DAT04221102953.935.9
453617172367.827.7
P0.280.090.140.060.007
12 DAT040394261335.5263.5
4535295653130.4215.6
P0.180.020.240.030.001

Abbreviations: DAT: days after early postemergence application.

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