Akhter Muhammad Javaid, M Abdurruhman Abdullatief, Mathiassen Solvejg Kopp, Kudsk Per
Research Centre Flakkebjerg, Department of Agroecology, Aarhus University, DK-4200 Slagelse, Denmark.
Department of Crop Protection, Faculty of Agriculture, University of Khartoum, Khartoum 11115, Sudan.
Plants (Basel). 2021 Jun 10;10(6):1186. doi: 10.3390/plants10061186.
Due to natural tolerance to most widely used herbicides for grass weed control, prosulfocarb as pre-emergence or early post-emergence herbicide and mesosulfuron + iodosulfuron as post-emergence herbicide are the mainstays of any chemical control program for in Denmark. However, farmers often report variable efficacy of these herbicides on compared to other grass weeds. Dose-response experiments were conducted to evaluate the performance of prosulfocarb and mesosulfuron + iodosulfuron on Prosulfocarb was sprayed at different plant growth stages to study the influence of plant growth stage on the performance of prosulfocarb on in comparison with the more susceptible grass weed species . Doses causing 50% reduction in response variable (ED) were estimated from the dose-response analysis. The ED values revealed a higher tolerance of to prosulfocarb and mesosulfuron + iodosulfuron than The relative difference in the effectiveness of prosulfocarb between and was constant among plant growth stages studied. The highest levels of control were achieved when prosulfocarb was sprayed pre-emergence (BBCH 00), while the control substantially declined at later growth stages. The results from the current study document the tolerance of to prosulfocarb and mesosulfuron + iodosulfuron and highlight the importance of optimization of prosulfocarb spray timing for achieving maximum control of .
由于对大多数用于防除禾本科杂草的常用除草剂具有天然耐受性，丙酯草醚作为苗前或苗后早期除草剂，以及甲基二磺隆+碘甲磺隆作为苗后除草剂，是丹麦任何化学防除方案的主要手段。然而，与其他禾本科杂草相比，农民经常报告这些除草剂对[某种杂草名称未明确给出]的防效不稳定。进行了剂量反应试验，以评估丙酯草醚和甲基二磺隆+碘甲磺隆对[某种杂草名称未明确给出]的防除效果。在不同植物生长阶段喷施丙酯草醚，以研究植物生长阶段对丙酯草醚防除[某种杂草名称未明确给出]效果的影响，并与更敏感的禾本科杂草物种进行比较。通过剂量反应分析估计导致反应变量降低50%的剂量（ED）。ED值表明，[某种杂草名称未明确给出]对丙酯草醚和甲基二磺隆+碘甲磺隆的耐受性高于[比较对象未明确给出]。在所研究的植物生长阶段中，[某种杂草名称未明确给出]和[比较对象未明确给出]之间丙酯草醚防效的相对差异是恒定的。当在苗前（BBCH 00）喷施丙酯草醚时，对[某种杂草名称未明确给出]的防除效果最佳，而在后期生长阶段防效大幅下降。本研究结果证明了[某种杂草名称未明确给出]对丙酯草醚和甲基二磺隆+碘甲磺隆的耐受性，并强调了优化丙酯草醚喷施时间以实现对[某种杂草名称未明确给出]最大防除效果的重要性。
