When growing watermelons, choosing the right fertilizer is key to ensuring high yields and quality fruits. Here are some suggestions on the best fertilizer for growing watermelons, compiled from publicly available information:
- Organic fertilizers: Organic fertilizers are the preferred choice when growing watermelons because they are rich in organic matter and microorganisms that improve soil structure and increase soil fertility. Common organic fertilizers include compost, well-rotted animal and plant waste, farmyard manure, etc. When using, make sure that the fertilizer is well decomposed and used in accordance with the recommendations on the package or the guidance of an agricultural expert.
- NPK Fertilizer: NPK fertilizer is a compound fertilizer of nitrogen (N), phosphorus (P) and potassium (K), which are essential for the growth and fruit development of watermelon. Nitrogen contributes to leaf and stem growth, phosphorus contributes to root development and flowering and fruiting, and potassium improves the sugar content and quality of fruits. Choose an NPK fertilizer that is suitable for the watermelon's growth stage and fertilize it according to the soil test results and the nutrient needs of the watermelon.
- Calcium-magnesium fertilizer: Watermelon has a higher demand for calcium and magnesium during fruit development. Deficiency of these elements can lead to a decrease in fruit quality and the development of diseases. Fertilizers such as calcium sulfate, calcium nitrate or magnesium sulfate can be selected and fertilized during the fruit expansion stage to meet the plant's calcium and magnesium needs.
- Trace element fertilizer: In addition to the main nutrients, watermelon also needs trace elements such as iron, zinc, copper, manganese, and boron to maintain normal growth and development. Commercially available micronutrient fertilizers can be selected and fertilized according to the instructions on the package to supplement these essential micronutrients.
- Organic Mineral Compound Fertilizer: This fertilizer combines the advantages of organic and inorganic fertilizers, providing both organic matter and microorganisms, as well as the main nutrients. The use of organic mineral compound fertilizers can improve soil structure and increase the disease resistance of plants, thereby increasing the yield and quality of watermelon.
Before using any fertilizer, it is advisable to conduct a soil test to understand the nutrient status and pH of the soil, allowing for more precise determination of fertilization needs and selection of the right fertilizer type. In addition, it is crucial to follow the instructions for use of fertilizers and the recommendations of agricultural experts to ensure the safety and effectiveness of fertilizer application.
In general, the choice of the best fertilizer when growing watermelons should take into account soil conditions, climatic conditions, and the growth needs of watermelons. Through scientific and reasonable fertilization management, the yield and quality of watermelon can be significantly improved.