What kind of pesticide can bayberry use?

Bayberry tree is a common fruit tree, its fruit bayberry is a famous fruit in our country, the shape of the ball, the color is dark red or purple, eat sour sweet. So, what pesticides can be used for bayberry trees?

Bayberry trees generally do not need to use pesticides, if pests occur, they need to use pesticides to control. Its diseases include cancer disease, rust, brown spot disease, withered disease, branch rot disease, red farmer disease, etc., pests include pine caterpillar, large lionfish moth, small lionfish moth, white capsule lionfish moth, cypress oyster scale, geometrid, leaf roller moth, dead leaf moth, small fine moth, fruit sucking moth, brown longicorn beetle, root knot nematode, etc., which can be controlled by corresponding pesticides.

1. Cancer

Symptoms: mainly damage the branches of fruit trees, while young trees and seedlings are rarely affected. The initial part of the disease produces milky white small protrusions, the surface is smooth, and then gradually increases to form tumors, so that the surface becomes rough or uneven, cork, very hard, brown or dark brown.

Medication: The bacteria mainly overwinter in the tumor of the branch. Before germination in spring, try to cut off the diseased branches; for the tumor on the big branch, after the tumor can be cut off with a sharp knife, disinfect the wound with 50 times solution of antibacterial agent 402 or 100 times solution of copper sulfate. Before spring shoot pumping, spray 1:2:200 Bordeaux mixture comprehensively once.

2. Brown spot disease

Symptoms: mainly harm bayberry leaves, finally lead to a large number of deciduous, flower buds and twigs died. Symptoms begin with pin-sized purplish red spots on the leaves, which gradually expand into round or irregular spots.

Application: spray 800 times solution of 70% thiophanate-methyl, 1000 times solution of 50% carbendazim and 600 times solution of 65% mancozeb once 7-10 days before fruit picking; after fruit picking, use Bordeaux mixture of 1:2:200 to control once.

3. Red farmer disease

Symptoms: mainly harm bayberry branches, dry, so that the tree is weak, branches die, until the whole tree dies. After the disease infection, in the trunk, main branches, lateral branches and twigs densely orange powder, tree decline, fruit size becomes smaller, taste sour. Finally, the branches die until the whole tree dies.

Medication: spray 1000-2000 times solution of Wendak to trunk and branch for protection during germination and transmission period of germs every year (early April and middle June). When spraying in April at low temperature, the concentration of the solution should be lower, about 2000 times the solution. If there is no Wendak medicine, 5% ferrous sulfate solution can also be used for control.

4. Leaf roller moth

It mainly damages the leaves of Myrica rubra. During the occurrence period from May to June, it can be controlled by green worm fungus, pesticides, etc., and highly toxic pesticides cannot be used. During the harm period of the second generation larvae in July and August, 90% trichlorfon 1000 times solution or 50% fenitrothion emulsion 1500 times solution can be used to control them.

5. Dead leaf moth

It mainly damages the leaves of Myrica rubra. During the incubation period of the first generation larvae, biological pesticides such as Bacillus thuringiensis and insecticides can be used to control them. During the incubation period of the second generation larvae, 20% fenvalerate emulsion (2000 times) or 2.5% kungfu pyrethroid EC (3000-4000 times) can be used to control them.

6. Fruit sucking moth

It mainly damages the fruit of bayberry. Mature fruits and melons are cut into small pieces, immersed in 50-100 times solution of 80% dichlorvos emulsion for half an hour, sprinkled with brown sugar solution, and placed on trees to trap adults.