Downy mildew of Cucurbits

General Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and squash. Damage symptoms Downy mildew pathogens infect m

Crazy roots, hairy roots, crown gall

General Rhizobium bacteria are soil bacteria that fix nitrogen after becoming established inside root nodules of legumes. Additionally, pathogenic Agrobacterium s pecies have recently been assigned to

Cannabis aphid

General Although it was first described in 1860, the cannabis aphid ( Phorodon cannabis ; a.k.a. bhang aphid or hemp aphid) is a very new pest to North America. It was first seen on cuttings originati

Lyprauta

General Larvae of the flies Lyprauta cambria, Proceroplatus trinidadensis and Lyprauta chacoensis (family Keroplatidae) have been associated with root damage in potted orchids, especially in greenhous

Chafers

General The chafers are beetles of the Scarabaeidae family. The larvae of both species live in the soil and feed on the roots of many plants. They are a serious pest that can cause substantial damage.

House fly

General Houseflies are a well-known pest of farm and home. Believed to have originated in central Asia, the insect expanded its range worldwide long ago as a commensal organism to human populations; t

Brown soft scale

General The brown soft scale Coccus hesperidum is very common in tropical and sub-tropical regions and is also a common pest in greenhouses throughout the world. C. hesperidum has many host plants, in

Cotton aphid

General The cotton aphid ( Aphis gossypii ) is an extremely polyphagous aphid found on more than 700 plant species. Crop plants attacked by this aphid include cotton, citrus, coffee, cocoa, eggplant,

Codling moth

General The codling moth ( Cydia pomonella ) is a notorious, worldwide pest of apple and also occasionally of pear, quince, peach and other fruits. It is very common in Europe. Damage symptoms After i

Tobacco aphid

General The tobacco aphid ( Myzus persicae subsp. nicotianae ) probably evolved from the peach potato aphid in the Far East and is a key pest of tobacco crops in both the United States and South Ameri