upper surface of leaves as small yellow dots. The destruction of cells results in reduced photosynthesis, increased transpiration and reduced plant growth
potato psyllid nymphs when feeding, is known as ‘psyllid yellows’, which results in delayed growth, weakness in the new leaves, chlorosis/reddening or purple
xylem vessels. In potato, it is tuber-borne. Spread from plant to plant results from bacteria moving from the roots of infected plants to neighbouring plants
boosted; Biological seed treatment reduces the use of agrochemicals which results in a lower exposure of growers to chemicals and lessens their impact on
that remains are the bigger veins. Young larvae also bore into buds, which results in shedding or drying up of the buds. Yellowish to dark-green larval excrement
nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the
best strategy for your situation. Environmental conditions For optimal results the medium has to be moist, rich in organic matter and have a loose structure
damage depends on the species of the flies. Direct damage is the immediate result of larvae feeding on root hairs and tender roots as well as stem and leaf
sucking out their contents, causing the surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta indicate