Weed response to broadcast flaming

Abstract:

A field experiment was conducted during the summer of 2007 at the Haskell Agricultural Laboratory near Concord, NE, to determine the response of four weeds species to broadcast flaming, including two grasses [barnyardgrass(Echinochloa crus-galli) and green foxtail(Setaria viridis)] and two broadleaves [velvetleaf(Abutilon theophrasti) and morningglory(Ipomoea hederacea)]. The V3 barnyardgrass (5 cm tall), V4 green foxtail (6 cm), V4 morningglory (11 cm) and V5 velvetleaf (8 cm) were flamed using propane rates of 0, 12, 31, 48, 69 and 87 kg/ha. The responses of the barnyardgrass, green foxtail, velvetleaf, and morningglory to propane flaming were described by logistic models. The percentage of weed control in terms of visual injury rating and dry matter (DM) reduction increased with increasing propane rates. In general, grasses were more tolerant to flaming than the broadleaf species when based on visual …

Año de publicación:

2008

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