問題：雑草について書かれた下の英文を読んで、問の答えとして最も適当なものを選べ。 Weeds are the most important biotic yield-reducing factor in terms of potential yield loss. Increased societal concern on the environmental and public health effects of herbicides(※) result in restrictions on their use. This, in addition to evolution of weed resistance to herbicides, calls for a transition in weed control from primarily chemical to primarily ecological. ( wur.nl Crop-weed-interactionsより) ※注 herbicides…除草剤　　問 How should future weeding be done? 出題元【ちいかわ草むしり検定1級】

問題

雑草について書かれた下の英文を読んで、問の答えとして最も適当なものを選べ。 Weeds are the most important biotic yield-reducing factor in terms of potential yield loss. Increased societal concern on the environmental and public health effects of herbicides(※) result in restrictions on their use. This, in addition to evolution of weed resistance to herbicides, calls for a transition in weed control from primarily chemical to primarily ecological. ( wur.nl Crop-weed-interactionsより) ※注 herbicides…除草剤　　問 How should future weeding be done?