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Pest aspects of potato production

Part 1. The nematode pests of potatoes. Part 2. Insect pests

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The Potato Crop

Part of the book series: World Crop Series ((WOCS))

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Abstract

Plant-parasitic nematodes are typically small (0.2–10 mm long) worm-like animals, able to move between soil particles, between folded leaves of plant buds, in the air spaces of leaves and stems or in plant tissues themselves. Their movement in soil is influenced by the thickness of the water films surrounding soil particles and they are inactive in dry conditions. Agricultural soils usually contain many species of plant-parasitic nematodes, as well as predatory and microphagous types, and the species composition is affected by many factors including climate, soil type and crop** patterns. Species parasitic on plants all possess a mouth stylet which they use to puncture plant cells and, in all except the Trichodoridae, this stylet is hollow and used to extract cell contents. Some feed on the cytoplasm which accumulates in the region of the stylet following the injection of saliva. Others modify the cells they feed upon so that the supply of nutrients is increased and they are able to become sedentary and lose their vermiform shape (Globodera, Heterodera, Meloidogyne, Nacobbus). Such nematodes usually produce large numbers of eggs and include the most harmful species. The damage may be direct, due to their feeding and penetration of roots, but some species transmit harmful viruses and damage by other species may be made worse by interaction with pathogenic fungi and bacteria.

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  1. K. Evans
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  2. D. L. Trudgill
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  3. K. V. Raman
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  4. E. B. Radcliffe
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    Paul M. Harris

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Evans, K., Trudgill, D.L., Raman, K.V., Radcliffe, E.B. (1992). Pest aspects of potato production. In: Harris, P.M. (eds) The Potato Crop. World Crop Series. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2340-2_11

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