Pii: S0022-474x(99)00025-9
نویسندگان
چکیده
Yam rots caused by fungal pathogens (mostly Fusarium spp.) are a major cause of storage losses, and previous work has shown that fungal lesions were only found if there was pre-existing physical damage to the tuber. The general perception is that damage in ̄icted in the ®eld prior to storage is far more important in this regard than damage caused during storage, and this has led to much research directed at the minimisation of ®eld damage with relatively little work on the amelioration of insect damage during storage. This study examined whether insect damage in ̄icted on yam tubers during storage in specialised barns is an important agent in the incidence of fungal disease. It was found that treatment of tubers with insecticide dust (Actellic 2% Dust; ai=pirimiphos-methyl) signi®cantly reduced fungal infections resulting from insect attack during storage. In addition, physical damage acquired during harvest appeared to be ameliorated by the insecticide, resulting in signi®cantly fewer fungal lesions. The results suggest that insecticide treatment of yam tubers prior to storage could provide a relatively cheap and eective means of preservation. # 2000 Elsevier Science Ltd. All rights reserved.
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Pii: S0022-474x(99)00023-5
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متن کاملPii: S0022-474x(99)00031-4
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