Green bean fertigation must be controlled carefully since they are extremely fast growing. There are pro’s and con’s of fast growing crops. An advantage can...
Leaf miner description The adult leaf miner (Liriomyza sativae) is a 1-1.8mm long shiny black fly with a prominent yellow triangle between the bases of...
Downy mildew is a serious problem in greenhouses especially under cold humid conditions. It is caused by the casual organism Bremia lactucae. Of the commercial...
Sclerotinia symptoms Leaves, especially the older ones, start to wilt during any stage of growth. The wilting continuous until the plant collapses completely. The...
Grey mould is found on lettuce, escarole, endive and globe artichoke. The disease is most important during transit of these crops. The disease is caused...
Description of whiteflies Whiteflies are about 1.5mm long, the adult is white which resembles a tiny moth. They produce oblong eggs, pale green to purple...
Septoria leaf spot is one of the most destructive diseases on tomato and is caused by Septoria lycopersici. It is most destructive during moderate temperatures...
Cutworm description Black cutworm moths have dark brown forewings, light-coloured hind wings, and a wing expanse of 38 to 51 mm. Granulate cutworm moths have...
Anthracnose is caused by the fungus Colletotrichum phomoides and is a common and widely distributed rot of ripe tomatoes. The disease can cause serious losses...
Bacterial spot is caused by Xanthomonas vesicatoria and is most noticeable in its effect on fruit. However it may also cause considerable injury to the...
Fusarium wilt (Fusarium oxysporum) is one of the most damaging fungi that infects tomatoes. Fusarium wilt is a soil borne disease and infects both soil...
Verticillium wilt is caused by the fungus Verticillium alboatrum. Quite often verticillium wilt is confused with fusarium wilt. The fungus attacks a wide range of...
Most seedlings are particularly susceptible to damping-off. In general the disease is caused by the fungi Pythium but some damage also occurs from infection from Rhizoctonia...
Bacterial wilt known as Ralstonia solanacearum biovar 3, formerly known as Pseudomonas solanacearum (SMITH) and Burkholderia solanacearum). Bacterial Wilt also known as Southern bacterial wilt...