How to fertilize guava? A full analysis of the latest techniques

Guava flowers all year round and has a long fruiting period, so its nutrient consumption is relatively high. Therefore, when growing it, if you want to keep getting high yields, fertilization is an important measure. Only by meeting the nutrient needs of the fruit tree can you achieve high yields and increase returns. So how should guava be fertilized? Let us take a look together.

1. Fertilizer requirements

According to research, for every 100 kg of guava fruit produced, the tree consumes 1.83 kg of nitrogen, 0.39 kg of phosphorus, 1.63 kg of potassium, 0.9 kg of calcium, and several other elements. Among these, the three needed in the largest amounts are nitrogen, potassium, and calcium. What is especially needed is calcium fertilizer. Unlike many crops, guava has a relatively high calcium requirement, even far exceeding phosphorus. Therefore, in production, attention should be paid to the application of calcium fertilizer. In addition, the nutrient requirements of guava are closely related to factors such as its variety, yield, and pruning.

2. Fertilizing young trees

The main purpose of fertilizing young trees is to promote their growth so they quickly form a high-yielding canopy. Generally, before planting, base fertilizer needs to be applied. The base fertilizer is mainly farmyard manure such as compost, manure, and human and livestock manure, and it should be fermented and decomposed before application. Generally, if there is no farmyard manure, 10-15 kg of nitrogen, potassium, and calcium fertilizer can be applied per plant, or 1 kg of superphosphate can be applied. In addition to applying base fertilizer, topdressing should also be done in time in combination with pruning, mainly with farmyard manure, reducing the application of quick-acting nitrogen fertilizer. Generally, topdressing is done twice a year. One time is in August-September, applying 20-30 kg of decomposed farmyard manure and 0.5 kg of compound fertilizer per plant; the second time is in May-June, applying 2 kg of compound fertilizer as foliar fertilizer per plant.

3. Fertilizing fruiting trees

Guava can flower once a year, and the fertilization of fruiting trees should be determined by the flowering and fruiting stages. It should be fertilized 3-4 times a year. Generally, fertilization begins in February-March when new buds sprout, and a flower fertilizer is applied once in March-April to provide sufficient nutrients for fruit flowering. In May, when the fruit expands, a fruit-strengthening fertilizer is applied. At this stage, once every 1-2 months fertilizer should be applied to promote the beginning of fruit expansion. In winter, attention should be paid to winter fertilizer, which can help restore tree vigor as quickly as possible and lay a solid foundation for high yields the following year. Generally, in spring, emphasis is placed on organic fertilizer, which can increase the organic matter content of the soil, improve soil structure, and enhance root vitality, while flower fertilizer and fruit-strengthening fertilizer mainly use nitrogen fertilizer and potassium fertilizer to promote plant growth.

The above is an introduction to how to fertilize guava. We hope it can help you. If you want to learn more related knowledge, please follow us.