What should be paid attention to when applying fertilizer to guava trees?

What do you need to pay attention to when fertilizing guava trees? Please guide guava fertilizer application should be slow effect of organic fertilizer mainly, chemical fertilizer supplemented. Organic fertilizers range widely, including plant matter, animal matter and animal waste. Organic fertilizer ingredients are very important, commonly used rice bran, castor meal, rapeseed meal, soybean meal, peanut meal, waste rice husk, bagasse, waste mushroom sawdust, peat, animal hair bone powder, cow dung, chicken manure, pig urine, fish essence, seaweed essence and oyster meal. When using commercially available bagged fully decomposed organic fertilizer, it should be noted that some compost is mixed with urea, ammonium sulfate, phosphate rock powder or silicate slag and other substances, and even the high concentration of chemical components causes fertilizer damage. For clay soil with low organic matter content, it is suggested to use organic matter with higher fiber composition, because of its higher C/N ratio and slower decomposition speed. Long-term application can increase soil organic matter content year by year to improve soil physical and chemical properties. Organic fertilizer with livestock manure as the main body is not suitable for long-term use because of its high content of nitrogen and phosphorus, and its high content of heavy metals such as copper and zinc. Chemical fertilizers are cheap, high purity and easy to apply, while organic fertilizers are expensive and costly to apply. However, organic fertilizers are large in volume and slow in decomposition. They can increase soil aeration, increase water retention, improve soil physical structure, improve fertilizer effectiveness and root activity. In order to maintain soil productivity, efforts should be made to maintain or increase soil organic matter content. However, chemical fertilizer application is simple and effective. In practice, organic matter should be used completely. This possibility is not high. Chemical fertilizer can be used reasonably and combined with organic fertilizer to improve guava quality and increase farmers 'income. Different organic fertilizers have different fertilizer effects. The proportion of three elements contained in a single organic fertilizer may not be suitable for the needs of guava in different growth periods, and the fertility status of each specific soil is different. If a single organic matter is applied in large quantities for a long time, it is likely to cause nutrient imbalance in the soil, which will affect crop yield and quality. Therefore, it should be applied in conjunction with chemical fertilizers to meet the needs of different growth periods. Click for more pomegranate growing techniques Click for more fruit growing techniques