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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #192010
Title: DICLOSULAM AND IMAZAPIC COMBINATIONS FOR WEED CONTROL IN GEORGIA PEANUT

Author
item WISE, A - UNIVERSITY OF GEORGIA
item GREY, T - UNIVERSITY OF GEORGIA
item PROSKTO, E - UNIVERSITY OF GEORGIA
item Webster, Theodore
item VENCILL, W - UNIVERSITY OF GEORGIA

Submitted to: Proceedings of Southern Weed Science Society
Publication Type: Abstract Only
Publication Acceptance Date: 2/10/2006
Publication Date: 6/1/2006
Citation: Wise, A.M., Grey, T.L., Proskto, E.P., Webster, T.M., Vencill, W.K. 2006. Diclosulam and imazapic combinations for weed control in Georgia peanut [abstract]. In: Proceedings of the Southern Weed Science Society Annual Meeting, January 22-25, 2006, San Antonio, TX. 59:65.

Interpretive Summary:

Technical Abstract: Florida beggarweed, sicklepod, wild poinsettia, Palmer amaranth, and morningglories remain troublesome weeds in strip- and conventional tillage systems. The objectives of this study were to determine the effect of diclosulam and imazapic combinations on peanut weed control and yield in cropping situations. Field studies were conducted at Plains and Tifton Georgia in 2003, 2004, and 2005. Peanut was planted using standard practices, treatments were arranged as a 2 x 5 factorial in a randomized complete block. The first factor was rate of diclosulam (0.0 and 0.035 kg ai/ha) and the second factor was rate of imazapic (0.0, 0.018, 0.035, 0.049, 0.070 kg ai/ha). Data collected included peanut yield and weed control for sicklepod, tall morningglory, wild poinsettia, Florida beggarweed, and Palmer amaranth. Across rates of imazapic without diclosulam, morningglory, wild poinsettia, Florida beggarweed, and Palmer amaranth control was 75% or less. When diclosulam was included, control of these species improved to greater than 78%. In contrast, across diclosulam rates when imazapic was not included in the system, control of all weed species was <50%. Florida beggarweed control improved linearly with increased imazapic rate ranging from 60 to 85%. The efficacy of imazapic and diclosulam applications indicates that combinations of these two herbicides are more efficient for controlling weeds and thus improving yields.