on the underside of leaves where they pierce the cells and suck out the contents. The empty dead cells become yellow, and in many plants the damage…
their presence in the crop. At a later stage, the empty cells become desiccated and the adjacent cells turn brown. The vigour of the plant is also…
meaning that it excretes compounds that kill the plant cells and then uses the content of the plant cells as nutrients. On the infected area, new…
several essential biochemical processes in cells of fungi. This disturbance leads to the death of these cells. Visual effect Progress of disease stops…
sclerotia. The fungus grows quite rapidly inside the plant and kills the host cells. On the infected plant tissue white, fluffy mycelium occurs with…
On the lesions, pycnidia are formed from which orange-red masses of two-celled conidia are exuded. Secondary infection is by splash dispersal of these
crop residues of infected plants as chlamydospores (thick walled mycelium cells) or mycelium. Survival is also possible on seed, greenhouse…
understood, possibly the mites, whilst sucking out the contents of plant cells, secrete substances that disturb local growth. Leaf feeding is mainly…
greenhouses. Damage symptoms Thrips cause damage to plants by piercing the cells of the surface tissues and sucking out their contents, causing the…
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