Effect of tillage and soyabean on Ipomoea lacunosa and Senna obtusifolia emergence.Published in:Weed Research, 2007, v. 47, n. 6, p. 499, doi. 10.1111/j.1365-3180.2007.00585.xBy:NORSWORTHY, J. K.;OLIVEIRA, M. J.Publication type:Article