| Disease | Organism | Symptoms | Occurrence | Hosts | Control |
|---|---|---|---|---|---|
| Ascochyta blight | Ascochyta blight | On leaves, small round whitish lesions with brown margins. Lesions often containing small black fruiting bodies of the fungus. Lesions can also form on stems causing premature death. Pod infection can ultimately result in black discolourations on seed. | Common in all lentil growing regions in southern Australia. All varieties except Northfield are at risk of seed infection by ascochyta blight. Damage is most likely in wet seasons. | Lentils – seed, stubble and self-sown plants. | Seed dressings Resistant varieties Foliar fungicides Crop rotation Avoid early sowing. |
| Botrytis grey mould | Botrytis spp. | Leaves: White round lesions-spots without black fruiting bodies as in ascochyta blight. Stems: Light brown sections form on stems that are covered with fluffy grey mould. Botrytis grey mould can cause branches to die and cause discoloured and shrivelled seed. In severe cases large brown patches can form in the crop. | Most likely to occur in dense, lodged crops when there is frequent rain late in spring. | Most legumes | Seed dressings Low plant density Avoid early sowing Foliar fungicides Crop rotation Resistant varieties |
| Alfalfa mosaic virus | Virus | Tip necrosis | Prevalent in lentil production regions. | Wide host range including most pulses, some horticultural plants and weeds. | Virus free seed, management of weeds, resistant varieties. |
| Cucumber mosaic virus | Virus | Yellowing, stunting | Common in all lentil growing areas. | Very wide host range, including most pulses, pastures, horticultural crops and weeds. | Virus free seed, management of weeds, resistant varieties. |
| Cucumber mosaic virus | Virus | Yellowing, stunting | Common in all lentil growing areas. | Very wide host range, including most pulses, pastures, horticultural crops and weeds. | Virus free seed, management of weeds, resistant varieties. |
| Turnip yellows virus (formerly Beet western yellows virus) | Virus | Yellowing, stunting | Common in all lentil growing areas. | Very wide host range. Most pulses and brassicas and many weed species | Managing weeds and aphids, resistant varieties. |
