Diseases
Anthracnose
Symptoms
Infected leaves have shot-hole spots. Affected flowers and young fruits are blighted and fall down. On green fruits, tiny brown spots develop that will only enlarge after harvest. The sunken spots enlarge on a ripening fruit and found anywhere on the peel in tear-shaped patterns. Eventually, the whole fruit rots and fungal fruiting bodies are formed on the rotten surfaces.
Prevention and control
Hot water treatment
Dipping newly harvested fruits in hot water (53°C for 5-10 minutes) minimizes anthracnose and stem-end rot infestations. Anthracnose will be reduced by 83% and stem-end rot by 100%. To facilitate heat water treatment, you need dipping tank, thermometer, and wire baskets. The water should have a uniform temperature within the tank to be effective. After dipping the fruits in hot water, dip them in tap water to about two hours or place them in a well ventilated room to cool down.
Pink disease
Symptoms
The first stage of infection is small cracks with fungal growth are found on the bark. The bark becomes pink and rotten as the disease develops. In heavy infestation, the disease that surrounds the trunk eventually withers and dies.
Prevention and control
1. Prune the infected branches. Disinfect the cut
surfaces with bleach solution at a ratio of: 1 part
bleach and 5 parts water. When the branch is dry,
varnish it with house paint.
2. Copper spray
Copper spray ( Method of preparation Mix 3 ½ tbsp of copper sulphate, 10 tbsp of hydrated lime and 1 gallon of water (4 liters of water) in a plastic bucket Stir using wooden stick Pests controlled Flea beetles Anthracnose Bacterial blight Bacterial wilt Black spot Downy mildew Late blight Powdery mildew Rust and many other disease causing pathogens Cautions Use only plastic or any non-corrosive containers Shake or stir to prevent extract from clogging Spray only on dry and sunny day, preferably early morning |
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