Prickly Sida (Sida spinosa L.), Hemp Sesbania [Sesbania herbacea (Mill.) McVaugh], and Pitted Morningglory (Ipomoea lacunose L.) Response to Selective and Non-Selective Herbicide in Mississippi, USA

Prickly sida (Sida spinosa), hemp sesbania (Sesbania herbacea), and pitted morningglory (Ipomoea lacunose) are becoming problematic weeds in many crops including corn soybean. Two separate field experiments, under non-crop conditions, were conducted at the Mississippi State University Delta Research Extension Center, Stoneville, MS to evaluate response of these eight selective herbicides three non-selective alone or combination. The used Aatrex (atrazine), Clarity (dicamba), 2,4-D (2,4-D amine), Callisto (mesotrione), Enlist Duo choline + dicamba), Capreno (thiencarbazone tembotrione), Corvus isoxaflutole), Halex GT (mesotrione S-metolachlor glyphosate), Gramoxone (paraquat), Liberty (glufosinate), Roundup (glyphosate). provided only 86% prickly side control 4-wks after application (WAA). treatments 99.5% control. Liberty, Callisto, Capreno, 71, 66, 51, 46% sida, respectively. Hemp was 100% from all herbicide applications except Roundup. not satisfactory since this treatment 72% By 4 WAA, 97 on (72 75%). management program should be able provide acceptable weed (i.e., greater than 95%) but also prevent seed deposition onto soil seedbank. Consequently, delaying evolution resistance will result technology preservation for as long possible by achieving a long-term program.