Powdery mildew background Powdery mildew (Leveillula taurica) is most prevalent in warm, dry atmosphere. The optimum germinating temperature is approximately 25°C with humidity ranging between...
Early blight (Alternaria solani) is one of the most common funguses found on tomatoes. The fungus infects mainly the leaves, but stem and fruit infection...
Late blight background Late blight (Phytophthora infestans) is very destructive under conditions of excessive moisture and low temperatures. Starts as small water soaked lesions which...
Botrytis rot (Botrytis cinerea) Botrytis rot (Botrytis cinerea), also known as grey mould, is caused by the fungus Botrytis cinerea, and has become on the...
Bacterial speck, also known as Xanthomonas campestris pv. vesicatoria, Pseudomonas syringae pv. Tomato. Bacterial speck and spot are very difficult to distinguish from each other. However...
Establishing the cucumber crop Cucumbers are tropical plants. In order to grow optimally a tropical environment should be created. This implies that temperatures should not...
Cat-face tomato fruit Symptoms Fruits have a long scar at the blossom end that extends inwards and renders the fruit unmarketable and disfigured (abnormal). There are...
Hollow fruit description Hollow fruit, also called puffy fruit or boxy fruit are angular in shape instead of round, however one should be careful since some...
Tomato fertigation is a complex subject in hydroponics. It is climate sensitive and everybody has an opinion of what works. The point is, tomatoes are...
Pruning tomatoes is an essential activity during the maintenance of the tomato crop. Just as the plants should be trellised every week, so should each...
Trellising tomato plants is only required when growing indeterminate types in greenhouses. Although trellising tomato plants it is labour intensive and must be done weekly,...
Zippering symptoms Zippering are thin scars running from the top of the shoulder of the fruit down the length to the blossom end. These longitudinal...
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