Weed Control Efficacy: Response of Chickpea to Pre- and Post-Emergence Herbicides | Wirksamkeit der Unkrautbekämpfung: Reaktion der Kichererbse auf Vor- und Nachauflaufherbizide
2022
Veisi, Mozhgan | Moeini, Mehdi Minbashi | Jahedi, Azhang | Mansoori, Mohammad Saleh | Sabeti, Peyman
Lack of control options for cool-season broadleaf weeds is a major deterrent to autumn-sown chickpea. Weed control and chickpea tolerance to PRE (pre-emergence) and POST (post-emergence) application of isoxaflutole and oxyflurofen, PRE metribuzin, POST pyridate, and flumetsulam were investigated at three locations, including Kermanshah, Kurdistan, and Hamedan provinces during 2017–2018. Untreated and weed-free checks were added for comparison. Pyridate and PRE oxyflurofen 125 g ai ha⁻¹ caused the minor visual crop injury according to EWRS score (1–1.8), while the highest crop injury occurred with metribuzin (EWRS score 3.5–8.5) in whole locations. The most effective herbicides for weed reduction were pyridate (70–75%), PRE oxyfluorfen (69–76%), and POST oxyfluorfen (65–73%) at Kermanshah, PRE oxyfluorfen at 125 and 175 g ai ha⁻¹ (70–78%), POST oxyfluorfen (70–76%) and pyridate (70–78%) at Kurdistan, PRE oxyfluorfen at 125 and 175 g ai ha⁻¹ (88–96%), metribuzin (91–100%) and Pyridate (80–97%) at Hamedan. Pyridate and PRE oxyfluorfen at 125 g ai ha⁻¹ resulted in the highest chickpea grain yield at the three locations. In general, PRE oxyfluorfen (125 g ai ha⁻¹) was similar to pyridate in terms of efficacy in weed control and grain yield enhancement.
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