新西兰首例草甘膦抗性病例已在马尔堡葡萄园的一年生黑麦草中得到证实。这一发现是由 * 耕地研究基金会 (FAR) 领导并由可持续农业基金 (SFF) 资助的项目的一部分。
Dr. Trevor James from AgResearch and Dr. Kerry Harrington of Massey University led the case, which was confirmed by SFF’s Avoiding Glyphosate Resistance project. Dr. James explains that the Marlborough case was identified thanks to the grower’s report to an unnamed chemical company.
“In the autumn of 2011 we received a call from a chemical company representative stating that glyphosate was not killing all the weeds, specifically some grasses, on the vineyard,” James stated,” We obtained some of the surviving plants and grew them on in the glasshouse until some of them set seed in autumn 2012. The seed we collected was then grown in the spring of 2012, and these plants treated with various rates of glyphosate. We found that nearly half the tested plants showed symptoms of glyphosate resistance.”
由于草甘膦是新西兰农业中最常用的除草剂，避免草甘膦抗性团队的项目经理 Mike Parker 说，这一发现应该被视为对广谱除草剂的所有用户敲响的警钟。
FAR 首席执行官 Nick Pyke 表示，虽然目前这是一个孤立的案例，但它警告草甘膦的使用者，他们需要意识到产生抗药性的危险，并谨慎使用它，因为它是世界上最环保的除草剂市场，失去它的后果将是严重的。
“Environmental repercussions would include the increased use of, and dependence on, less environmentally friendly herbicide options; greater dependence on more intensive cultivation leading to greater degradation of soil structure and soil health; and the risk of some weeds spreading as the cost of controlling them would increase.
“On-farm the impacts would include reduced income, due to increased chemical costs and reduced crop yields. Removing glyphosate from the suite of available chemicals would also increase the resistance pressure on other herbicides,” Pyke concluded.