RESIDUAL EFFECT OF DICLOSULAM ON THE EARLY DEVELOPMENT OF MAIZE AND SORGHUM
DOI:
https://doi.org/10.32404/rean.v12i3.9191Keywords:
Carryover, Plant‑back interval, Sorghum bicolor, Zea maysAbstract
Herbicide carryover is one of the challenges in crop succession and rotation systems that can affect the development of sensitive crops such as maize and sorghum. This study aimed to evaluate the early development of maize and sorghum under different residual levels of the herbicide diclosulam. The experiment was conducted in a greenhouse, arranged in a completely randomized design, with six treatments and four replications for each crop. The tested doses were 5.23, 10.43, 20.85, 41.70, and 83.40 g ai ha−1 applied pre‑emergence to maize and sorghum, plus an untreated control for each crop. Injury symptoms and the number of emerged seedlings were assessed at 7, 14, 21, and 28 days after emergence (DAE), along with plant height and shoot dry mass. Injury symptoms were more severe in sorghum. Doses of 20.85, 41.70, and 83.40 g ai ha−1 reduced maize height and shoot dry mass of both maize and sorghum. A reduction in the number of emerged plants was observed at the highest residual dose, that is, 70 g ai ha−1. Doses above 20.85 g ai ha−1 were detrimental to the early development of maize and sorghum.
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