How to fertilize sugar apple? Master these latest key points

Sugar apple, also known as custard apple, 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 cultivated in many areas of southern China. For the cultivation and management of sugar apple, fertilization key points can be said to be of utmost importance, so how should sugar apple be fertilized? Let's learn about it together.

I. Key points for fertilizing young trees

Fertilizing young trees is different from fertilizing fruit-bearing 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 trench digging. First, dig planting trenches on the planting site at a certain spacing between plants and rows, then apply base fertilizer into the trenches, and then cover with soil once to prevent the young tree roots from directly contacting the fertilizer, so as to avoid root burn, and it is also beneficial to 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. Fertilizing adult trees

1. Base fertilizer

For adult trees, it is also necessary to ensure sufficient base fertilizer intake, so as to ensure the growth vigor of the tree body and also promote fruit setting. Generally, base fertilizer can be applied in spring or autumn, that is, in February or October. The amount of base fertilizer should be determined according to the growth vigor, tree age and yield of the adult tree. Generally, trees with older age and higher 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 base fertilizer can be brought into play.

2. Topdressing

For topdressing of adult trees, generally 5-6 topdressings are needed each year, roughly divided into flowering stage fertilizer, fruit stage fertilizer and fruit harvesting fertilizer. Among them, 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. Fruit stage topdressing should be specific to different periods. Generally, topdressing is needed 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 points of fertilizing sugar apple. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.