Work

Pyroxasulfone e pyroxasulfone mais flumioxazin: eficiência de controle de plantas daninhas e seletividade para a cultura do alho

Year: 2025

Type: article

Abstract: This study aimed to evaluate the efficiency and selectivity of pyroxasulfone and pyroxasulfone + flumioxazin at garlic cv. Ito pre-emergence. The experiment was conducted in two commercial areas in Curitibanos/SC during 2021 and 2022, using a randomized block design with four replications. The treatments consisted of the pre-emergence application of: pyroxasulfone at rates of 75, 100, and 125 g ha-1; pyroxasulfone + flumioxazin at rates of 60 + 40, 90 + 60, and 120 + 80 g ha-1; oxyfluorfen + flumioxazin (180 + 25 g ha-1); pendimethalin + flumioxazin (1820 or 1600 + 25 g ha-1); and pendimethalin alone (1820 or 1600 g ha-1). In addition, we included an untreated and a weed-free control. This study evaluated weed density, dry mass, phytotoxicity, and bulb yields. In 2021, no weeds were reported in the cultivation area, thus only herbicide selectivity for garlic was evaluated, with all the treatments being selective without reducing the yield of garlic. In 2022, ryegrass and wild radish were predominant weeds in the crop, but the treatments caused a greater reduction in the number of ryegrass plants compared to wild radish. The plots with a higher number of wild radish plants showed a greater accumulation of dry mass due to their rapid development and large size. The most effective herbicides against these species were pyroxasulfone + flumioxazin at doses 60 + 40 and 120 + 80 g ha-1, and oxyfluorfen + flumioxazin, while also giving a high total and commercial yield. Therefore, pyroxasulfone and pyroxasulfone + flumioxazin are selective treatments at garlic cv. Ito pre-emergence.

Source: Bioscience Journal

DOI: 10.14393/bj-v41n0a2025-76881

Authors: Laura Bordignon, Alysson Dias Dalmas, James Florencio de Souza, Ricardo Pazinato, Antonio Mendes de Oliveira Neto, Naiara Guerra

Institutions: Universidade de São Paulo, Universidade Estadual Paulista (Unesp), Universidade Federal de Santa Catarina, Universidade do Estado de Santa Catarina

Language: English

Topic: Weed Control and Herbicide Applications

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $500