POST grass + mesotrione tankmixes

摘要

An experiment was conducted near Casselton, ND, to evaluate yellow foxtail control in corn. Pioneer '39K42' was planted on May 23, 2002. POST treatments were applied June 29 at 8:30 am with 80 F air, 90 F soil surface, 50 percent relative humidity, 100 percent clouds, 5 to 10 mph S wind, moist soil surface, wet subsoil, good to excellent crop vigor, and no dew present to 10 to 14 inch (5 collar) corn. Weed species present were: 1 to 6 inch (5 to 20/yd~2) foxtail species (25 percent yellow populationto 75 percent green population); 1 to 6 inch (3 to 15/yd~2) redroot pigweed; 1 to 6 inch (3 to 15/yd~2) common lambsquarters; 3 to 6 inch (3 to 15/yd~2) common cocklebur; and 1 to 6 inch (5 to 15/yd~2) wild mustard. Treatments were applied to the center6.67 feet of the 10 by 40 foot plots with a bicycle-wheeltype plot sprayer delivering 8.5 gpa at 40 psi through 8001 flat fan nozzles. The experiment had a randomized complete block design with three replicates per treatment.