Autumn Vegetable Response to Residual Herbicides Applied the Previous Spring Under Low-density Polyethylene Mulch

Abstract

Field studies were conducted in 2002 and 2005 to evaluate autumn vegetable tolerance to residual herbicides applied the previous spring under low-density polyethylene (LDPE) mulch. Spring applications of 1.12 kg/ha S-metolachlor, 0.027 kg/ha halosulfuron, 0.28 kg/ha sulfentrazone, and 1.12 kg/ha S-metolachlor plus 0.027 kg/ha halosulfuron were made under LDPE mulch in March of each year and included a nontreated control. After removal of the spring crop, vegetables were planted the following August. Seeded and transplanted squash, seeded cucumber, transplanted eggplant, and transplanted cabbage were evaluated. Injury to eggplant, cucumber, and transplanted and seeded squash ranged from 8 to 16% for halosulfuron, sulfentrazone, and S-metolachlor plus halosulfuron in 2002, but no injury was observed in 2005. Cabbage injury was less than 5% for any herbicide treatment either year. There were no differences for cabbage biomass for three harvests for any herbicide treatment relative to the nontreated control. Vine length for cucumber and transplanted squash was significantly reduced by sulfentrazone relative to the nontreated control. Eggplant yield for the first harvest was significantly reduced by sulfentrazone as compared with the nontreated control in 2002 but not in 2005. To avoid injury to rotational crops, growers should read all herbicide labels when considering spring herbicide applications under LDPE mulch when autumn vegetable plantings are part of their production scheme to ensure successful crop production.

Reducing the Risks of Herbicide Resistance: Best Management Practices and Recommendations

“…f.] in trials in Australia by inducing germination and then exposing the seedlings to lethal soil temperatures (Cohen et al 2008). Polyethylene mulches have also been successfully integrated with herbicides for weed control in bell pepper (Capsicum annuum L.) and other high-value vegetable crops (Bangarwa et al 2011;Culpepper et al 2009;Grey et al 2007Grey et al , 2009.…”

Response of Young Pecan Trees to Repeated Applications of Indaziflam and Halosulfuron

“…Halosulfuron half-life ranges from 6 to 98 d, depending on soil moisture and temperature regimes (Dermiyati and Yamamoto, 1997b;Grey et al, 2007a) and can exhibit hysteric effects (Carpenter et al, 1999). Injury from halosulfuron carryover to rotational crops has occurred as a result of its variable soil behavior (Grey et al, 2007b). Although halosulfuron has been extensively evaluated in annual crops for tolerance and carryover (Dittmar et al, 2008;Haar et al, 2002;Jennings, 2010;Sikkema et al, 2008;Webster et al, 2003), little information about pecan tree tolerance has been reported.…”

Productivity of Some Eggplant Cultivars Under Different Systems of Weed Control

“…These results are supported by Chartzoulakis et al, (1997). Covering the soil with black and transparent plastic sheet was also used in many vegetable Grey et al, (2007), to increase the yield regardless of keeping soil moisture and weed suppression under new reclaimed land. This is the cheaper agroecological approach to reduce weed populations, weed total biomass and increasing eggplant productivity as well as reduce production costs.…”