Evaluation of Chemical Weed-Control Strategies for Common Vetch (<i>Vicia sativa</i> L.) and Sweet White Lupine (<i>Lupinus albus</i> L.) Under Field Conditions
2025
Csaba Juhász | Nóra Mendler-Drienyovszki | Katalin Magyar-Tábori | László Zsombik
Seed production of common vetch (<i>Vicia sativa</i> L.) and sweet white lupine (<i>Lupinus albus</i> L.) is risky due to weed infestation as few herbicides are permitted for use in crops. Our aim was to test herbicides in these crops in order to expand the list of available herbicides. Various pre- and post-emergence herbicides were tested for their phytotoxicity and weed-control activity in field cultures of the common vetch (cv. Emma) and sweet white lupine (cv. Nelly). After the application of herbicides, phytotoxicity was monitored visually. Data collection involved the Normalized Difference Vegetation Index (NDVI), the plant height, the number of weeds, yield, and its contamination. Additionally, 1000-seed-weight measurements were taken for lupine. Summarizing the phytotoxicity and efficacy results in common vetch, the agents S-metolachlor, flumioxazin, and clomazone can be recommended for further pre-emergence testing, while metazachlor + quinmerac, chlorotoluron, and flumioxazin can be recommended for further post-emergence testing. In sweet white lupine, pre-emergence applications of flumioxazin, pendimethalin, dimethenamid-P, pethoxamid, clomazone, metobromuron, and diflufenican were found to be effective without any significant phytotoxicity. Further post-emergence testing of flumioxazin, chlorotoluron, carfentrazone-ethyl, and diflufenican can also be recommended, as well as the application of halauxifen-methyl and sulfosulfuron at low doses (0.4 L ha<sup>−1</sup>; 13.0 g ha<sup>−1</sup>). Additional evaluations of these treatments are recommended, including in different soil and weather conditions.
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