pear psyllas are 2-3 mm long and orange red to blackish. They have white, longitudinal stripes on the back of the thorax. Their forewings are clear…
. Lycoriella species are mainly found in commercial mushroom cultivation where they can cause enormous damage. Sciarid flies are usually found in damp…
black tea thrips are dark brown with the apex of the abdomen paler; females are 1.4-1.7 mm long and males are 1.1-1.2 mm long. The legs are entirely…
pods of peas. The spots on leaves and pods are round, on the stems they are more elongated. The lesions are light brown, sunken and surrounded by a…
Hemiptera Whitefly What are whiteflies? Whiteflies are a group of small, winged insects that belong to the family Aleyrodidae. They are called…
spider mites ( Tenuipalpidae ) are brick-red to yellow in colour. They have the same body shape as spider mites but are usually smaller. The different…
Coniferae Ornamental conifers About Conifers are also referred to as Pinophyta, Coniferophyta or Coniferae . The plants are so-called gymnosperms or…
(apterae) are yellow with black cornicles, antennae, legs, and cauda (tip of abdomen). Nymphs are similar to apterae in appearance except that they ar…
or are they only effective once pests are present? Can beneficial microorganisms be used preventively, or are they only effective once pests are…
peach, bacteria are found in high numbers in the roots, whereas in plum, high numbers are found in leaves and fruits. The bacteria are transferred…
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