gypsophila, celery, sweet pepper, pea, bean and potato. In greenhouses, it is mainly found on gerbera and chrysanthemum. Today the insect is widespread across
issue of GrowerTalks. In Aphids—Go Time he discusses key points about the main types of aphids growers are most likely to encounter this spring, including
stem. Gerbera flowers deform and discolour with the leaves turning bronze, mainly along the midrib. Even a mild infestation can cause enormous damage, and
spider mite (Tetranychus urticae) and has been used in many crops worldwide, mainly in greenhouses, but also in outdoor crops such as strawberries. This predatory [...] rapidly in the absence of suitable prey. When prey is in short supply, mainly adult females will leave the prey patch in search of other spider mite colonies
be attracted by the sugar water in the bumblebee hive, particularly if the main crop is not yet flowering. After positioning, wait 30 minutes before opening
spreading. This gum blocks the xylem and causes the wilting which is the main symptom of this Fusarium species. Higher up in the plant, the microconidia
the United States. Founded in 1875, it’s an independent state agency whose main mission is research. Acquired knowledge is shared through programs aimed
preventative controls are some of Phil’s go-to tactics when dealing with their main nemeses: whiteflies and spider mites. Bill Calkins is widely known as the
usually found on the lower surface of the leaves, often in the corner of the main vein and lateral veins. It is not possible to distinguish Amblyseius andersoni
tongues. Bumblebees are much more efficient pollinators than honeybees, they mainly forage for pollen rather than nectar, and transfer more pollen to the pistils