The correct timing and method for bagging guavas

Guava, commonly known as bale or bazi, has extremely high nutritional value. Its fruit can treat diabetes and lower blood sugar, and can also help prevent and control high blood pressure, giving it powerful benefits. During cultivation, because of certain environmental or pest and disease factors, growers bag the fruit. Bagging not only improves the glossiness of the fruit, but also prevents the harm of pests and diseases. So when should guavas be bagged? And how should they be bagged? Let's take a look.

1. Bagging time

Guava bagging generally should be done one month after the fruit sets, when the young fruit reaches 3-4 cm in vertical diameter and the fruit begins to droop. Only by bagging at this time can the best effect be achieved. If bagging is done too early, there are fewer fruits, making it harder to operate, and it is also very likely to cause physiological fruit drop of the young fruit, making the bagging ineffective. If bagging is done too late, the young fruit has already grown to a certain extent, and at this point bagging often loses its meaning because the fruit has already suffered pest damage.

2. Fruit thinning

Before bagging guavas, fruit thinning must be done first. When thinning, keep more fruit on plants with large and thick leaves, and keep fewer on those without. Generally, the average yield of guava is about 2,000 kg per mu. Therefore, control the fruit on each plant to about 60. In principle, generally keep one fruit per fruiting branch, while vigorous fruiting branches keep 2-3, and weak fruiting branches keep one or have all fruit thinned off. In addition, when thinning, promptly remove abnormal fruits or those affected by pests and diseases, so as to prevent pests and diseases from spreading to other fruits.

3. Bag selection

The material used for bagging is also extremely important. It is recommended to choose a double-layer polypropylene material, with the inner layer being a white foam mesh tube and the outer layer being a 0.02 mm thick white transparent film bag. Note that the inner foam mesh tube is best chosen at 4 mm thick. If it is too thin, pests can pierce through the mesh tube and lay eggs directly inside the fruit, making the bagging ineffective.

4. Bagging method

First, when the fruit turns and droops, spray once with a pesticide. The pesticide can be a low-concentration solution of thiophanate-methyl and fenvalerate emulsifiable concentrate. After spraying, wait for it to dry naturally. First put on the inner foam mesh bag, then put on the outer plastic film, pressing the mesh opening and bag opening tightly against the fruit stalk and tying them firmly to prevent them from falling off. Finally, leave a small hole at the left, center, and right positions of the bottom of the bag to drain water, so as to prevent water accumulation from causing fruit rot.

The above is an introduction to the timing and method for bagging guavas. We hope it can help you. To learn more related knowledge, please stay tuned to us.