Thrips tabaci
تھرپس
ONION
Thrips are minute (mostly 1 mm long or less), slender insects with fringed wings and unique asymmetrical mouthparts. Different thrips species feed mostly on plants by puncturing and sucking up the contents. Many thrips species are pests of commercially important crops. A few species serve as vectors for over 20 viruses that cause plant diseases.
Thrips tabaci
تھرپس
ONION
ETL: 8-10 per Leaf
Thrips tabaci
تھرپس
ONION
Nymphs and adults lacerate the tissue and suck the sap from the upper and lower surfaces of leaves. They inject saliva and suck the lysed contents of the plant cells resulting in silvery or brown necrotic spots.
Helicoverpa armigera
امریکن سنڈی
ONION
The american bollworm, is a moth, the larvae of which feed on a wide range of plants, including many important cultivated crops. It is a major pest in cotton and one of the most polyphagous and cosmopolitan pest species.
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Helicoverpa armigera
امریکن سنڈی
ONION
ETL: 5 (5 Brown Eggs or 3 Small Larvae or collectively 5) per 25 Plants
Helicoverpa armigera
امریکن سنڈی
ONION
The larvae feed on the leaves initially and then bore on to the square/bolls and seeds with their head thrust into the boll, leaving the rest of the body outside. Larvae show preference for feeding on squares and flowers when present, however, feed on young bolls also. A single larva can damage 30-40 fruiting forms during its developmental period. These larvae spread boll rot microbes, and the damaged bolls rot resulting in yield loss.
Spodoptera litura / S. exigua
لشکری سنڈی
ONION
Armyworm is an important insect pest of cotton. It causes heavy damage to cotton and lowers production. The adult is a dark brown moth with white lines on its wings. However, it is the worm-like young (larvae) that cause the damage. The larvae feed mainly on leaves, but flowers and bolls may also be damaged occasionally
Spodoptera litura / S. exigua
لشکری سنڈی
ONION
ETL: On Appearance
Spodoptera litura / S. exigua
لشکری سنڈی
ONION
Early in stars are found in the lower-to-mid levels of the plant canopy, where they feed on foliage. Larvae in the first few instars “skeletonize” leaves near the egg mass from which they eclosed. Early in the cotton-growing season, later instars have the potential to destroy terminals on cotton seedlings. Older instars are usually present within the lower regions of the plant canopy, feeding on fruiting structures. Older larvae typically injure bracts, large squares, and young bolls in a manner similar to the bollworm. Heavy infestations have the potential to injure all fruiting forms. Larger larvae feed internally in fruiting structures making successful chemical control more difficult.
