Anthracnose
Caused by : Colletotrichum orbiciulare
It is one of the serious diseases of Cucumber which attacks all the plant parts.
Symptoms
Yellowish circular spots having grey centre can be found on the leaves. We can also find yellow sunken spots on the fruits. Plants growth and yield will be decreased due to this.
Management
Use fungicides like Ziram, Acrisio which effectively controls this disease
Parijat Shapat can also prevent anthracnose disease in cucumber
Bacterial wilt
Caused by : Erwinia tracheiphila
Symptoms
Vascular tissues of the plants are mostly affected. Yellowing and drying of the leaves and twigs can be seen. Blighted appearance on the leaves. Later plants will immediately wilt and leads to death of the plant.
Management
Drench with Carbendazim 0.1%
Spray COC to control wilt disease
Drench with Redomil gold
Powdery mildew
Caused by : Erysiphe cichoracearum
Symptoms
On the upper surface of the leaves white powdery mass can be seen. Growth of the plant is hindered. Later the leaves starts to wither and finally the whole crop will be lost.
Management
Application of Carbendazim @ 2g/lit of water
Spray fungicides like Chlorthalonyl, Benomyl etc.
Mosaic
Caused by : Cucumber mosaic virus
Symptoms
Irregular yellowing of leaves can be seen. Leaves starts to bend down and the fruit knobs starts turning pale/yellow colour. Finally Plants become stunted. It is transmitted by aphids.
Management
Use insecticides like Shine @ 2.5ml/lit
Bio product like Bio R 303 can also be used @ 1.5 ml/lit
Imidachloprid and Willomax can be used to control this disease.
