Soybean thrip nymph
- Adult: Small slender-bodied insects that are dark brown with yellow stripes and have a set of hair-fringed wings.
- Nymphs: Similar to adults but white to orange-yellow, smaller and wingless.
- Eggs: Oblong and laid singly on plant leaves.
Timing of damage: V1 to R7
Type of damage: Tiny pale-colored scars on the leaves and leaf discoloration or mottling.
Scouting: Sample five areas of the field. Check leaves for mottling and inspect the undersides of leaves with a hand lens to determine the presence of thrips.
Economic threshold: More than 75% of trifoliolates are damaged, with eight thrips present per leaf.