Individual lesions may fully encircle a root. These nematodes also damage feeder roots and root hairs, further reducing a plant's effective extraction of water and nutrients from the soil. The overall effect is a weak, shallow root system with many dead or dying areas. 11 дек. 2014 г.
What are some negative effects caused by nematodes on their environment?
Often plant damage caused by nematodes is overlooked because the resulting nonspecific symptoms, such as slow growth, stunting, and yellowing, can also be attributed to nutritional and water-associated disorders.
What symptoms do nematodes cause?
General symptoms from nematodes include yellowing, stunting, and wilting, accompanied by a yield decline.
How do nematodes cause harm to plants and humans?
Root-knot nematodes (RKNs) are significant pests of sweetpotato causing symptoms of infection which include: stunted plant growth, yellowing of leaves, abnormal flower production, and gall production on roots leading to decreased nutrient and water absorption and necrosis and cracking on fleshy storage roots.
How do nematodes damage plants?
Many plant-parasitic nematodes feed on the roots of plants. The feeding process damages the plant's root system and reduces the plant's ability to absorb water and nutrients. Typical nematode damage symptoms are a reduction of root mass, a distortion of root structure and/or enlargement of the roots (Figure 6, 7, 8).
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