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larvae feed also on the chlorophyll-rich green areas of stems and pods causing whitening of the crop. Heavily damaged plants appear stunted and will,…
stems, leaves and fruits of hosts. Infestations on the leaves and stems may cause wilting and may reduce the photosynthetic area of the plants,…
structure behind the head. Damage and symptoms Damage before shell hardening is caused by the larvae which bore into the fruit. In small nuts the…
red, brown, or almost black. Damage symptoms Larvae, nymphs and adults cause damage to the host plant by feeding on plant sap. They mainly occur on…
the leaves, stems and reproductive parts of more than 100 plant species causing major damage to cultivated grasses, such as maize, rice, sorghum and…
all belong to the family Aphididae, a family containing many species that cause damage in cultivated crops. The most significant aphids that occur in…
ducing countries across the world. The populations can grow quickly and cause considerable damage, because the saliva that they inject when feeding is
serious infection, leaves die off completely. Mining by the caterpillar causes malformations. Damage to fruit allows fungal diseases to enter, leading
fruit and forest trees, and ornamental shrubs and trees. Damage is mostly caused by sap depletion; the shoots dry up and die, and defoliation occurs.…
with larger larvae expelling large quantities. The damage that whiteflies cause to a crop is the result of sucking out the sap from the plant leaves…
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