Plants produce and store many products of secondary metabolism that are released into the environment and can influence direct or indirectly on nearby organisms. Thus, this study investigated the allelopathic potential of extracted soil solution from an area with cover crops according to germination and early development of beggartick. Soil solution was extracted in an area where black oats, turnip and hairy vetch were grown. The concentrated solution was tested in sand substrate while the dilutions were tested in 100; 200; 300 and 400 ml L-1 germitest paper substrate, plus the control treatment on beggartick. Germination was tested for 10 days and the early development for 20 days. Twenty seeds or seedlings were distributed in gerbox, with three replications and the experimental design was completely randomized (CRD). Soil solution showed considerable changes on beggartick germination only in the last collections, mainly with extracted solution in an area cropped with turnip and hairy vetch. The results, in this case, were more significant when germitest was used than with sand substrate. Therefore, it is recommended these cover crops in crop rotation, aiming to reduce beggartick infestation in a long term.
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机译：植物产生并存储许多次级代谢产物，这些产物会释放到环境中，并可能直接或间接影响附近的生物。因此，这项研究根据萌芽期和Beggartick的早期发育研究了从有盖作物的地区提取的土壤溶液的化感作用潜力。在种植黑燕麦，芜菁和多毛紫v的地区提取土壤溶液。在沙子基质中测试浓缩液，而稀释度在100中测试； 200; 300和400 ml L-1细菌性最强的纸张基材，加上Beggartick的对照处理。测试发芽10天，早期发育20天。在gerbox中分配了20个种子或幼苗，进行了3次重复，并且实验设计是完全随机的（CRD）。仅在最后一次采集时，土壤溶液对Beggartick的发芽表现出显着的变化，主要是在萝卜和多毛紫菜种植的区域中使用提取的溶液。在这种情况下，使用杀菌剂时的结果要比使用沙质基质时的结果更为显着。因此，建议在轮作中使用这些覆盖作物，以期长期减少乞be侵扰。
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