hyphae extend intercellularly, forming haustoria to parasitize mesophyll cells. The latent period (the time from infection to visible symptoms) ranges from
Hyphae from the same AG fuse. When hyphae from different AG’s meet, the cells around the fusion site die. To complicate matters further, subgroups can
These days, the western flower thrips causes the most problems. It pricks cells on the surface of leaves and flowers and sucks them dry. This causes silver-grey
primarily on the underside of leaves where they pierce the cells and suck out the contents. These dead cells become yellow. As damage increases, whole leaves turn
healthy on the outside, the nitrogen is actually hard at work inflating its cells, weakening the plant and creating an 'obese plant.' The result will be a
including orchids, palms, citrus, ornamentals , and avocado. Armored scales suck cell sap in fruit trees and berries that eventually result in defoliation and
crop residues of infected plants, as chlamydospores (thick walled mycelium cells) or mycelium. Survival is also possible on seed, greenhouse structures, tools
it lives off dead material. But this dead material is from the host plant cells that the fungus has killed. This creates spaces for other necrotrophic fungi
scales, produce no honeydew. They feed by sucking the contents of epidermal cells, into which they inject toxic substances that cause yellow, red or brown
common species in greenhouse and open-field crops. These pests pierce plant cells, causing stippling, leaf yellowing, and eventual necrosis. Outbreaks can
