When is the grape vineyard usually cleaned? Can Bordeaux liquid be used for grape vineyard cleaning?

Grapes are common fruits with a sweet and sour taste. The flesh can also be made into wine. Grapes grow on vines. If they are planted in vineyards, they should be cleaned to provide a better environment for subsequent growth.

When is the grape vineyard usually cleaned?

Generally, garden cleaning is carried out in two times.

One is before germination, to trim the excess dead branches, rotten leaves, old bark, and some unimportant branches, and then clean them all together, and then apply Bordeaux liquid to kill insects and disinfect, and burn or crush the cleared dead branches, rotten leaves and stubble, add some medicine to disinfect, bury and ferment them as fertilizer. This is the so-called spring garden cleaning.

You can use lime sulfur mixture or high-quality sulfur + chlorpyrifos (based on personal experience, the effect is better) to spray the whole garden to kill pests and diseases and reduce the pressure of later prevention and control.

Another cleaning is after the grape leaves fall. It is best to spray the entire orchard (leaves, trunks, and ground) with a broad-spectrum fungicide + foliar fertilizer, mainly to reduce the occurrence of diseases, prolong the function of leaves, and accumulate and store more nutrients. After the leaves fall, clean up the leaves, weed residues, fruit bags, old bark on the trunks, etc., burn or bury them deeply to reduce the base number of diseases and insects.

Because it has been growing for a quarter, and there are injuries from picking, dead branches, diseases and insect pests, the extra branches must be pruned, and the dead branches and leaves in the balls must be cleaned up, leaving no dead corners. Insects like to hide in hidden places to lay eggs, and lime sulfur mixture is applied to kill insects and sterilize, and lime paste is applied to the main branches to prevent insects and frost.

Can Bordeaux liquid be used to clean grapes?

Yes, but it must be used with insecticide.

Bordeaux solution has a good preventive effect on grape black pox, downy mildew, etc. If it is a homemade Bordeaux solution, it is not recommended to mix it with other drugs. If it is a commercially available Bordeaux solution, it can be mixed with highly effective chlorfenapyr, thiamethoxam, imidacloprid and other insecticides to prevent aphids, thrips and other pests.

Phenoxymethrin is effective against fungal diseases such as grape black pox, rust, and downy mildew. Highly effective cypermethrin and thiamethoxam are effective against thrips, aphids, and green stink bugs in early spring, and are highly safe. It is not recommended to use acetamiprid, which is less effective when the temperature is low.

Sulfur dry suspension has good safety and can be used to prevent and treat various diseases. Combined with imidacloprid, it has a certain preventive effect on aphids, thrips, etc. Imidacloprid can also be replaced by thiamethoxam and dinotefuran.

What medicine can be used to clean the grape garden

1. Use conventional lime sulfur mixture at a concentration of about 200 times to thoroughly spray the base of branches and trunks.

2. Mix oxadiazine hydrochloride (200-400 times) with avermectin + etoxazole + thiamethoxam (800-1500 times) and spray the root base of branches and trunks carefully. It can also be treated when the buds germinate.

3. Spray all branches and roots with 600-800 times the concentration of Streptomyces flavonoids, Trichoderma harzianum, Bacillus subtilis, Pseudomonas fluorescens, and Bacillus licheniformis.

4. Spray the branches and trunks with about 1000 times the concentration of spirotetramat + cypermethrin + thiamethoxam.