Weeds are a major problem in potato production. Two years of trials were conducted to study the efficacy of herbicides and integrated use of mulch with herbicides in controlling weeds and for improving the growth and yield of autumn potato crop at Ludhiana, north-west India, during autumn 2016 and 2017. Each trial had a randomized complete block design with three replicates. There were 11 treatments including weed-free and weedy controls. Uncontrolled weeds caused a yield reduction of 49.7%. Metribuzin at 350 g/ha pre-emergence resulted in 82.4% weed control efficiency at 30 days after planting but this control was reduced to 23.9% at harvest. In contrast, metribuzin at 350 g/ha applied post-emergence controlled broadleaf weeds and grasses very effectively. Clodinafop at 60 g/ha post-emergence resulted in control of grasses only. The post-emergence application of pre-mix clodinafop plus metribuzin at 260 g/ha provided effective weed control and resulted in more tuber yield and economic returns and was significantly better than an application solely of metribuzin or clodinafop. The integrated weed control treatment of paddy straw mulch (PSM) at 6 t/ha with clodinafop plus metribuzin at 195 g/ha post-emergence resulted in the highest tuber yield with weed control efficiency of 95.3% at harvest. The next best one was an integrated treatment of PSM at 6 t/ha with metribuzin at 275 g/ha pre-emergence.

杂草是马铃薯生产中的主要问题。在印度西北部的卢迪亚纳，于2016年秋季和2017年进行了为期两年的试验，研究除草剂的有效性以及覆盖物与除草剂的综合使用在控制杂草以及改善秋马铃薯作物的生长和产量方面的作用。每项试验均具有三个重复的随机完整块设计。有11种治疗方法，包括无杂草和杂草控制。不受控制的杂草导致减产49.7％。出苗前350 g / ha的Metribuzin在播种后30天达到了82.4％的杂草控制效率，但收获时该控制降低至23.9％。相反，以350 g / ha的甲羟苄嗪非常有效地施用了出苗后控制的阔叶杂草和草。出苗后克洛地那非的用量为60 g / ha，只能控制草。出苗后以260 g / ha的浓度加氯丁那普加Metribuzin的预混后提供了有效的除草效果，并提高了块茎产量和经济效益，明显优于单独施用甲氧苄辛或clodinafop的情况。出苗后对氯稻草加Metribuzin进行6t / ha稻田稻草覆盖物（PSM）的综合除草处理后，块茎产量最高，收获时除草效率达到95.3％。下一个最好的方法是出苗前以275克/公顷的美特津对6吨/公顷的PSM进行综合处理。出苗后对氯稻草加Metribuzin进行6吨/公顷的稻草覆盖（PSM）的综合除草处理后，块茎产量最高，收获时除草效率达到95.3％。下一个最好的方法是出苗前以275克/公顷的美特津对6吨/公顷的PSM进行综合处理。出苗后对氯稻草加Metribuzin进行6t / ha稻田稻草覆盖物（PSM）的综合除草处理后，块茎产量最高，收获时除草效率达到95.3％。下一个最好的方法是出苗前以275克/公顷的美特津对6吨/公顷的PSM进行综合处理。