General The green peach aphid ( Myzus persicae subsp. persicae ) is an important insect pest in sweet pepper, tomato, cucumber and many other greenhouse crops. The aphid may originate from Asia, where
faster after wet weather, such as a rainstorm. It’s also important to ensure your crop is strong and vigorous: crops like these are better able to withstand
General Ascochyta pisi is a fungal plant pathogen that causes A scochyta blight on pea (leaf blight or pea blight) and lesions of stems, leaves, and pods (pea leaf spot and pea pod spot). Damage sympt
General Peronospora sparsa is a plant pathogen that causes plant diseases, such as downy mildew of rose and diseases on blackberries, raspberries and other Rubus species. Damage symptoms Downy mildew
General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the leaves. Survival can be
General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress, caused for example by too much water, too hig
General The broad mite (Polyphagotarsonemus latus) occurs in the tropics and in greenhouses in temperate regions. The broad mite (Polyphagotarsonemus latus) has a wide range of host plants, especially
Biological control of leafhoppers Leafhoppers are highly mobile, sap-sucking pests that feed on plant leaves, causing discoloration, stippling and leaf curling. Their feeding reduces photosynthesis, w
Biological control of mealybugs and scales Mealybugs and scale insects are persistent pests that feed on plant sap, weakening crops and producing honeydew that leads to sooty mould. Infestations reduc
Biological control of leaf miners Leaf miners are damaging pests that tunnel through leaves, reducing photosynthesis and weakening plant growth. Their feeding patterns cause visible leaf damage, lower
