A Detailed Explanation of the Causes of Navel Orange Premature Decline and Its Prevention and Control Methods

Navel oranges are loved by the public for their delicious taste, rich nutrition and other advantages, and as market demand expands, their planting area is growing wider and wider. In recent years, the phenomenon of premature decline in navel oranges has become more and more obvious, seriously affecting the yield and quality of navel oranges, so how should navel orange premature decline be prevented and controlled? Let's take a look together.

1. Symptoms of premature decline

When navel oranges suffer premature decline, the leaves decrease, the leaf color becomes dull and lusterless, and the trunk takes on a grayish-brown appearance; on severely declining trunks, fungi may also appear, along with the phenomenon of old branches dying off. Although the number of flowers is large, the quality of the fruit is rather poor. In addition, the root system may show drying and peeling, and there are relatively few new roots.

2. Branch pruning

According to the specific condition of the premature decline in navel oranges, the affected branches can be pruned appropriately, and spring is a more suitable time for pruning; after the branches are pruned, new branches will sprout again. Apart from some severely declining plants that cannot recover, premature decline of other degrees can all be restored through pruning. At the same time, when the trees' vigor has recovered after planting and they begin to bear fruit, the number of fruits must be reasonably controlled; if too much fruit is set, premature decline may continue to occur in the following years, and once repeated premature decline occurs, it is difficult to recover, until the plant dies.

3. Reasonable irrigation

Water plays an extremely important role in the growth of navel oranges, and reasonably controlling the amount of watering has a good effect on preventing and controlling premature decline in navel oranges. The soil moisture content should be reasonably maintained in combination with the actual growth condition of the navel oranges. In the rainy summer period, attention must be paid: when the rainfall is relatively heavy, the soil moisture content at this time far exceeds what is needed for navel orange growth; in such cases, trenches should be dug in time for drainage to reduce the soil moisture content, creating a loose, well-aerated soil environment for navel orange growth.

4. Scientific fertilization

Improving the fertilization method for navel oranges is also one of the important measures for preventing and controlling premature decline. The traditional fertilization method mainly applies fertilizer beside the plant, whereas now fertilization should blend the fertilizers together; for example, if organic fertilizer and compound fertilizer are used, a certain amount of water should be mixed in, then they should be composted, and after they are thoroughly decomposed, they should be applied deeply. In this way, not only are the fertilizer nutrients greater, but they are also easily absorbed by the navel oranges.

The above is an introduction to the causes of navel orange premature decline and its prevention and control methods. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.