Abstract:In 1982, the bipyridilium herbicides diquat [6,7-dihydrodipyrido (1,2- :2;i-c) pyrazinediium ion] at 0.56, 1.12 and 2.24 kg ai/ha, and paraquat [1, 1-dimethyl-4,4' -bipyridinium ion] at 2.24 kg ai/ha were evaluated for postemergence control of weeds in pumpkin cv. Borinquen (Cucurbita moschata (Duchesne) Poir). The experiment was established in Fraternidad clay soil, a Vertisol at the Lajas Substation, Agricultural Experiment Station. No statistical differences (P=0.05) in yield were detected among the hand-we… Show more
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