Response of sweetpotato to pendimethalin application rate and timing

Abstract

Field trials were conducted near Pontotoc, Mississippi; Chase, Louisiana; and Clinton, North Carolina, in 2017 and 2018 to determine the effect of pendimethalin rate and timing application on sweetpotato crop tolerance, yield, and storage root quality. Treatments consisted of five pendimethalin rates (266, 532, 1,065, 1,597, and 2,130 g ai ha−1) by two application timings (0 to 1 or 10 to 14 d after transplanting). Additionally, a nontreated check was included for comparison. Crop injury (stunting) was minimal (≤4%) through 6 wk after transplanting (WAP) and no injury was observed from 8 to 14 WAP, regardless of application timing or rate. The nontreated check yielded 6.6, 17.6, 5.5, and 32.1 × 103 kg ha−1 of canner, no. 1, jumbo, and total grades, respectively. Neither pendimethalin application timing nor rate influenced jumbo, no. 1, marketable, or total sweetpotato yield. Overall, these results indicate that pendimethalin will be a valuable addition to the toolkit of sweetpotato growers.

Selectividad de herbicidas en camote (Ipomoea batatas (L.) Lam.) variedad Criollo

“…Los resultados de selectividad observados para los herbicidas clomazone, pendimetalina, metolaclor y linuron aplicados seis días después de la siembra del camote, concuerdan con lo reportado por varios autores, cuando aplicaron estos herbicidas bajo condiciones similares en otras variedades de camote, tal es el caso de clomazone (Aparecido dos Santos et al, 2018;Correia & Carvalho, 2021;Dittmar & Boyd, 2020;Harrison & Jackson, 2011;Lugo-Torres & Díaz, 2007;Porter, 1990;Wadl et al, 2020), pendimetalina (Hormenoo, 2021;Meyers et al, 2020), metolaclor (Dittmar & Boyd, 2020;Glaze & Hall, 1990) y linuron (Aparecido dos Santos et al, 2018;Correia & Carvalho, 2021;Moore et al, 2021).…”

“…Keywords: batata, weeds, phytotoxicity, yield. pendimetalina para el control de poáceas (Herrera-Murillo & Picado-Arroyo, 2023;Hormenoo et al, 2021;Lugo-Torres & Díaz, 2007;Meyers et al, 2020), clomazone efectivo contra poáceas y algunas especies de hoja ancha (Dittmar & Boyd, 2020;Aparecido dos Santos et al, 2018;Harrison & Jackson, 2011;Herrera-Murillo & Picado-Arroyo, 2023;Meyers et al, 2013), S-metolachor para el control de ciperáceas y poáceas (Dittmar & Boyd, 2020;Meyers et al, 2013) y linuron para el control de hojas anchas y algunas poáceas (Martí et al, 2018).…”

Postemergence-directed applications of pendimethalin for control of early-season weeds in chile pepper

“…Dinitroaniline herbicides like pendimethalin are absorbed by roots and coleoptiles of emerging seedlings (Appleby and Valverde 1989) and inhibit growth of susceptible plant species by arresting division of root cells in emerging seedlings (Cobb and Reade 2010). Pendimethalin solutions that contact crop foliage can cause stunting, leaf deformities, and chlorosis (Figueroa et al 2016; Miller et al 2003), although some crops are minimally injured by pendimethalin on their foliage (Grichar et al 2005; Lewthwaite and Triggs 2000; Meyers et al 2020). The development of pendimethalin strategies for chile pepper may need to account for individual crop cultivars.…”