Detailed Explanation of Key Points and Operation Methods of Navel Orange Bagging Technology
Navel orange bagging is a commonly used method in navel orange production. After bagging, navel oranges develop a delicate, smooth surface with uniform color at maturity, giving them high commercial value. So when should navel oranges be bagged? How should bagging be done? Let's take a look at the detailed introduction below.
1. Bagging Time
To master the bagging time and achieve the best bagging effect, bagging is generally best carried out after the physiological fruit drop and navel yellowing of navel oranges have ended, when the number of fruits has stabilized. The specific time is best before the arrival of high temperatures in July. If done too early, high temperatures will affect the development of young fruit, and the peel may develop yellow spots again; if done too late, the reticulation on the fruit surface increases, and high temperatures and strong light can cause sunburn, affecting fruit quality. Bagging is best done around 9 AM or 4 PM, avoiding the early morning and dusk when humidity is heavier, and bagging should not be done on rainy days or days with dew.
2. Choosing Bags
The choice of bags is also extremely important. You should choose bags that resist high temperatures, rain and moisture. Do not casually substitute waste paper or old newspapers; use specially made bags produced by reputable manufacturers. These are generally double-layer paper bags with a shading rate of over 85% and excellent air permeability.
3. Bagging Method
When bagging, select fruit with a regular shape and strong growth. First bag the fruit on the upper part of the canopy, then the fruit on the lower part; first bag the fruit on the inner part of the canopy, then the fruit on the outer part. The bag opening should be firmly tied to the fruit stalk with metal wire, with the bag opening facing downward, and the fruit should as far as possible not touch the inner wall of the bag, so as to avoid sunburn caused by sunlight exposure. After bagging, check frequently, especially after rain, and replace moldy bags promptly.
4. Pest and Disease Control
After bagging, pest and disease control work should be strengthened, especially against red spider mites, scale insects, rust mites and citrus canker. Pesticides such as thiophanate-methyl, streptomycin, Supuji and chlorpyrifos can be used for control. The use of copper-based pesticides such as propargite, Bordeaux mixture, amitraz and omethoate is strictly prohibited to prevent the appearance of speckling on the fruit.
The above is an introduction to navel orange bagging technology. We hope it helps you. To learn more related knowledge, please follow us.