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首页> 外文期刊>Ciência e Agrotecnologia >Influence of silicon on the development, productivity and infestation by insect pests in potato crops
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Influence of silicon on the development, productivity and infestation by insect pests in potato crops

机译：硅对马铃薯作物中害虫的发育，生产力和侵染的影响

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Potato crops are susceptible to various insect pests including the aphid Myzus persicae (Hemiptera, Aphididae) and the beetle Diabrotica speciosa (Coleoptera, Chrysomelidae). Induced resistance through silicon treatment of plants represents a potential strategy in pest management. The objective of the present study was to evaluate the effects of silicic acid on the development, productivity and level of infestation by beetles and aphids following foliar application to potato plants cultivated in the presence of organic compost or chemical fertiliser. Four experimental groups were studied, namely, plants cultivated in soil supplied with organic compost (30 t/ha) and either treated or non-treated with 0.5% silicic acid, and plants cultivated in soil supplied with NPK fertiliser (4:14:8; 4 t/ha) and either treated or non-treated with 0.5% silicic acid. The number of aphids and beetles detected on the leaves and the number of lesions caused by the beetles were evaluated. The height and the stem diameter of the plants were determined 60 days after the emergence and the productivity was determined 95 days after the planting of the seed potatoes. The results demonstrated that there were no interactions between silicic acid treatment and way of cultivation. Moreover, the incidence of beetles and aphids was not influenced by weekly application of silicon, and neither were the development and the productivity of plants. Although the development and productivity of organically cultivated plants were inferior to those grown in the presence of chemical fertiliser, plants cultivated on organic compost were less susceptible to attack by beetles.
机译：马铃薯作物易受各种害虫的侵害，包括蚜虫Myzus persicae（半翅目，蚜虫）和甲虫Diabrotica speciosa（鞘翅目，金眼科）。通过植物硅处理产生的抗性代表了有害生物管理中的一项潜在策略。本研究的目的是评估在有机堆肥或化肥存在下叶面施用马铃薯后，硅酸对甲虫和蚜虫的发育，生产力和侵染水平的影响。研究了四个实验组，分别是在有机堆肥（30吨/公顷）的土壤中种植的植物，用0.5％的硅酸处理过或未处理过的植物，以及在NPK肥料的土壤中种植的植物（4：14：8） ; 4吨/公顷），并用0.5％的硅酸处理过或未处理过。评价了在叶片上检测到的蚜虫和甲虫的数量以及由甲虫引起的损害的数量。在出苗后60天确定植物的高度和茎直径，并在种土豆后95天确定生产力。结果表明，硅酸处理与栽培方式之间没有相互作用。此外，甲虫和蚜虫的发病率不受每周施用硅的影响，植物的生长和生产力也不受其影响。尽管有机栽培植物的发育和生产力不如在化学肥料存在下生长的植物，但在有机堆肥上栽培的植物更不容易受到甲虫的侵袭。

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