Insects & Disease Management

These flashcards cover key concepts related to insect management and disease management in crops.

Insects are characterized by pairs of legs, a segmented body into head, thorax, & abdomen, and usually pairs of wings.

3; 2

Insects worldwide reduce agricultural yields by __%, while in the US they reduce yields by __%.

20%; 3%

The greatest damage from insects occurs in the __, averaging 20% from insects & 30% from nematodes.

tropics

Insects cause damage to crops by on plant tissue and by plant tissue.

chewing; sucking

Transmitting plant viruses occurs by injecting viruses into the plant from their __.

stylets

Pest outbreaks are increased by growing crops in a __, improving crop __, and repeated insecticide applications.

monoculture; health

Biological control includes the suppression of pest outbreaks by __, __, and __.

predators; parasites; diseases

Cultural control strategies include crop rotation and planting __ varieties that resist pests.

resistant

Chemicals used in the 1940s & 1950s have been replaced by __ chemistry that is safer for people, wildlife, & the environment.

safer