Abu-Nassar Jackline, Matzrafi Maor
Department of Plant Pathology and Weed Research, Newe Ya'ar Research Center, Agricultural Research Organization (ARO), Ramat Yishay 30095, Israel.
Plants (Basel). 2021 Feb 2;10(2):284. doi: 10.3390/plants10020284.
Dunal is an invasive weed species that invaded Israel in the 1950s. The weed appears in several germination flashes, from early spring until late summer. Recently, an increase in its distribution range was observed, alongside the identification of new populations in the northern part of Israel. This study aimed to investigate the efficacy of herbicide application for the control of using two field populations originated from the Golan Heights and the Jezreel Valley. While minor differences in herbicide efficacy were recorded between populations, plant growth stage had a significant effect on herbicide response. Carfentrazone-ethyl was found to be highly effective in controlling plants at both early and late growth stages. Metribuzin, oxadiazon, oxyfluorfen and tembutrione showed reduced efficacy when applied at later growth stage (8-9 cm height), as compared to the application at an early growth stage (4-5 cm height). Tank mixes of oxadiazon and oxyfluorfen with different concentrations of surfactant improved later growth stage plant control. Taken together, our study highlights several herbicides that can improve weed control and may be used as chemical solutions alongside diversified crop rotation options. Thus, they may aid in preventing the spread and further buildup of field populations.
Dunal是一种入侵性杂草物种，于20世纪50年代侵入以色列。这种杂草在几个发芽高峰期出现，从早春一直到夏末。最近，观察到其分布范围有所扩大，同时在以色列北部发现了新的种群。本研究旨在调查使用源自戈兰高地和耶斯列山谷的两个田间种群来控制该杂草的除草剂施用效果。虽然在不同种群之间记录到除草剂效果存在微小差异，但植物生长阶段对除草剂反应有显著影响。发现乙羧氟草醚在植物生长早期和晚期都能高效控制杂草。嗪草酮、恶草酮、乙氧氟草醚和苯唑草酮在生长后期（8 - 9厘米高）施用时，与在生长早期（4 - 5厘米高）施用相比，效果有所降低。恶草酮和乙氧氟草醚与不同浓度表面活性剂的桶混制剂改善了生长后期的杂草控制效果。综上所述，我们的研究突出了几种可改善杂草控制的除草剂，它们可作为化学解决方案与多样化的作物轮作选择一起使用。因此，它们可能有助于防止该杂草田间种群的扩散和进一步增加。
