How to fertilize sugar apple? These key fertilization points you need to master

Sugar apple, also known as sweetsop, is one of the famous tropical fruits. Although its appearance is not attractive, its taste is excellent, and it has economic value for processing. It is grown in many areas of southern China. For the cultivation and management of sugar apple, fertilization points can be said to be of paramount importance, so how should sugar apple be fertilized? Let's learn about it together.

I. Key fertilization points for young trees

Fertilizing young trees is different from fertilizing fruiting trees. Generally speaking, before young trees are planted, sufficient base fertilizer needs to be applied to ensure the growth of the young trees. Base fertilizer is generally applied 2-3 months before planting. The application of base fertilizer can be combined with land preparation and trenching. First, dig planting trenches on the planting site according to a certain row spacing, then apply base fertilizer in the trenches, and then cover with soil once to prevent the young tree roots from coming into direct contact with the fertilizer, so as to avoid root burn and also help root absorption. For the fertilizer, it is recommended to choose green manure or decomposed farmyard manure, generally about 10-20 kg per plant. In addition, 1 kg of phosphate fertilizer should be applied to ensure seedling growth. In addition, young trees have weak disease resistance, so in addition to applying sufficient base fertilizer, an appropriate amount of lime should also be added to reduce the occurrence of diseases. Young trees should be topdressed multiple times. Generally speaking, appropriate topdressing should be carried out each time new shoots sprout.

II. Fertilization for mature trees

1. Base fertilizer

For mature trees, it is also necessary to ensure sufficient base fertilizer intake, so as to ensure the growth vigor of the tree and also promote fruit bearing. Generally, base fertilizer can be applied in spring or autumn, that is, in February or October. The amount of base fertilizer used should be determined according to the growth vigor, tree age, and yield of the mature tree. Generally, trees with greater age and high yield should have the amount of base fertilizer increased. For example, for every 100 jin of fruit produced, about 20 jin of high-quality manure is consumed, so that the effect of the base fertilizer can be brought into play.

2. Topdressing

For mature trees, topdressing is generally required 5-6 times per year, roughly divided into flowering-stage fertilizer, fruiting-stage fertilizer, and post-harvest fertilizer. The main purpose of flowering-stage fertilizer is to promote flowering and preserve flowers, and the time is about between February and March. Because sugar apple flowers have a relatively high demand for phosphorus and potassium fertilizers, it is recommended to choose a compound fertilizer with balanced nutrients. Fruiting-stage topdressing should be specific to different periods. Generally, topdressing needs to be carried out after the flowers fade, and compound fertilizer is also recommended. The last topdressing is during the fruit harvesting period, at the end of September. Generally, 5-10 kg of farmyard manure needs to be applied per plant to promote the recovery of tree vigor.

The above is an introduction to the key fertilization points for sugar apple. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.