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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >Changes in Weed Response to 2,4-D Application with 5 Repeated Applications in Spring Wheat
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Changes in Weed Response to 2,4-D Application with 5 Repeated Applications in Spring Wheat

机译：春小麦5次重复施用对2,4-D的杂草响应变化

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2,4-D amine and 2,4-D isooctylester were sprayed repeatedly in the spring of 5 consecutive years on spring wheat (Triticum aestivum L.cv.K?rik)in Erzurum during the years 1990-1994. The herbicide efficacy against all broad-leaved weeds and against the most common weed species was determined by comparing the number of weeds in untreated and treated plots. The most abundant weed species were Polygonum aviculare, Amaranthus retroflexus and Chenopodium albumin spring wheat. The effect of 2,4-D amine decreased after 3 or 4 years in A.retroflexus, C.album,Convolvulus arvensis, Acroptilon repens, Lactuca serriola, P.aviculare, Cirsium arvense and other broad-leaved weeds. Effects against Sinapis arvensis and Sisymbrium altissimum remained unchanged. The reduction in the effectiveness of Isooctylester on A.retroflexus, C.album, C.arvensis, C.arvense, A.repens, L.serriola, P. aviculare and other broad-leaved weeds was statistically significant, but the rate of decrease was not statistically significant for S. arvensis and S.altissimum. The resistance of A.retroflexus against isooctylester increased in the 4th year. The results indicate that the effects against some weeds of herbicides were reduced especially from fourth year. Therefore, the herbicides using against weeds should be changed periodically.
机译：在1990-1994年间，连续5年春季在Erzurum的春小麦（Triticum aestivum L.cv.K？rik）上反复喷洒2,4-D胺和2,4-D异辛酯。通过比较未处理和已处理地块中杂草的数量，可以确定除草剂对所有阔叶杂草和最常见杂草种类的功效。杂草种类最多的是何首乌，A菜和藜麦白蛋白。 2,4-D胺的作用在3年或4年后在曲叶曲霉，空心菜，卷积空心菜，白屈顶草，山形乳杆菌，小球藻，抗皱皮草和其他阔叶杂草中降低。对Sinapis arvensis和Sisymbrium altissimum的影响保持不变。异辛基酯对曲叶曲霉，信箱藻，arvensis，arvense，曲霉，L.serriola，P。aviculare和其他阔叶杂草的有效性下降具有统计学意义，但下降速度在欧文链霉菌和拟南芥中无统计学意义。在第4年中，屈挠曲霉对异辛酯的抗性增加。结果表明，特别是从第四年开始，除草剂对某些杂草的影响有所降低。因此，应定期更换除草剂。

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