The Latest Method Tutorial on Bagging Navel Oranges

Bagging navel oranges is a commonly used method in navel orange production. After bagging, navel oranges develop a fine, smooth surface and uniform color at maturity, giving them high commercial value. So when should navel oranges be bagged? And how should bagging be done? Let's take a look at the detailed introduction.

1. Bagging Time

Mastering the bagging time achieves the best bagging results. Generally, bagging should be carried out after the physiological fruit drop and navel yellowing of navel oranges have ended, when the number of fruits has already stabilized. The best specific time is before the high temperatures arrive in July. Bagging too early means high temperatures may affect the development of young fruit, and the peel may develop yellow spots again; bagging too late means the net-like pattern on the fruit surface increases, and high temperatures with strong light can cause sunscald, affecting fruit quality. It is best to choose around 9 a.m. or 4 p.m. for bagging, avoiding the periods of heavy moisture at dawn and dusk as much as possible, and bagging should not be done on rainy days or days with dew.

2. Choosing Bags

The choice of bags is also extremely important. Choose bags that are resistant to high temperatures, rain and moisture; do not casually substitute waste paper or old newspapers. Use special bags produced by legitimate manufacturers. These are generally double-layer paper bags with a shading rate of over 85% and excellent permeability.

3. Bagging Method

When bagging, choose fruits with a regular shape and strong growth for bagging. First bag the fruits on the upper layer of the canopy, then bag the fruits on the lower layer of the canopy; first bag the fruits in the inner canopy, then bag the fruits on the outer canopy. The bag opening should be firmly tied to the fruit stalk with metal wire, with the bag opening facing downward, and try not to let the fruit touch the inner wall of the bag, so as to avoid sunburn caused by sunlight. After bagging, check frequently, especially after rain; bags that have become moldy should be replaced promptly.

4. Pest and Disease Control

After bagging, pest and disease control should be strengthened, especially for red spider mites, scale insects, rust mites and citrus canker. Chemicals such as thiophanate-methyl, streptomycin, Supujie and Lebasida can be used for control. It is strictly forbidden to use copper-based pesticides such as propargite, Bordeaux mixture, Shuian and omethoate, so as to avoid speckling on the fruit.

The above is an introduction to navel orange bagging techniques. We hope it helps you. To learn more related knowledge, please stay tuned to us.