Diseases and Pests of Citron and Their Control

Diseases of Buddha's Hand

Sooty Disease of Buddha's Hand

Once Buddha's hand is infected with sooty mold, the leaves of the plant will be damaged, and coal-gray spots will appear on the leaves. Over time, they will turn black, engulfing the entire leaf and hindering growth.

Prevention and control of sooty disease: pay attention to ventilation, grow in a sunny place, also pay attention to regular drainage, and prune withered and damaged branches and leaves.

You can use 1000 times diluted 40% Lecithin EC or 1:1:10 tobacco lime water to spray on the leaves for prevention and control, or you can use 1000-1500 times diluted 25% Juncarb EC to spray on the leaves for prevention and control of anthracnose.

Citrus canker of bergamot

If the branches of Buddha's hand are damaged in a high temperature and high humidity environment, it is easy to cause citrus canker disease. This disease is a fungal virus that can significantly damage the tender new branches and leaves of Buddha's hand.

Prevention and control methods: You can use drugs to spray for treatment. Start spraying with 0.5% Bordeaux liquid, agricultural streptomycin, etc. at the end of spring. When new leaves grow from late summer to early autumn, unfold the leaves and spray about 3 times a day.

You can also directly eliminate the source of the disease and cut off the infected branches and leaves to prevent it from spreading to other healthy branches and leaves.

Pests of Buddha's Hand

The main pests of bergamot are leaf miners,. Cotton-blowing scale insect pests, aphids, and red spiders.

Leaf miner pests on Buddha's hand

The leaf miner pest of Buddha's hand will devour and damage the leaves of Buddha's hand, hindering photosynthesis and limiting the growth of the plant.

In severe cases, the branches and leaves may rot and fall off, causing the entire plant to die.

Prevention and control methods: The method to prevent and control leaf miners is to spray 1000 times diluted 90% crystal dichlorvos.

Scale insect pests of Buddha's hand

The cottony scale insect pest of Buddha's hand can damage the branches and leaves.

Prevention and control methods: You can cut off the diseased parts to prevent infection.

Mix the medicine with water, i.e. 1000 times of 40% dimethoate emulsifiable concentrate or 1000 times of 25% phosphite emulsifiable concentrate, and spray it.

Aphids and red spider pests on Buddha's hand

Aphids and red spider mites of Buddha's hand can cause damage to new branches and leaves.

Prevention and control methods: The most effective prevention and control method is to spray with 1000-1500 times diluted triazolin. Pay attention to the concentration used. Too concentrated will cause unnecessary pesticide damage, which will not be worth the loss.