Cauliflower Fertilization Techniques: Key Points and Methods Explained
Cauliflower is an annual plant of the genus Brassica in the cruciferous family. It is a vegetable grown for its curd, and together with broccoli and head cabbage, it is a variety of cabbage. Cauliflower is rich in nutrients and has a delicious flavor, making it one of people's favorite vegetables. It has a long growing period and a high demand for nutrients, so fertilization is the key point when growing it for high yields. So how should cauliflower be fertilized? Let's take a look together.
1. Nutrient Requirements
According to experimental research, producing every 1000 kg of cauliflower curds consumes 8-11 kg of pure nitrogen, 2-3 kg of phosphorus pentoxide, and 9-12 kg of potassium oxide. The elements it needs most are nitrogen and potassium. During the peak growing season, it has a relatively high demand for nitrogen fertilizer, while during the curd formation stage, it needs more phosphorus fertilizer. Before budding, the supply of phosphorus and potassium fertilizers must be ensured. In addition to these three conventional fertilizers, it also has a certain demand for trace elements such as boron, magnesium, calcium, and molybdenum.
2. Apply Sufficient Base Fertilizer
Before production, in order to meet the nutrient needs of cauliflower, in addition to choosing loose, fertile soil with strong fertilizer retention, decomposed farmyard manure and nitrogen-phosphorus-potassium compound fertilizer should be applied as base fertilizer before planting. When applying, combine it with plowing and mix it evenly with the soil. Generally, apply 2500-300 kg of decomposed farmyard manure, 15-20 kg of compound fertilizer, and about 0.5 kg of borax per mu to avoid nutrient deficiency symptoms in the early seedling stage.
3. Reasonable Topdressing
After applying sufficient base fertilizer, cauliflower still needs topdressing three times throughout its growth period. The first time is at the rosette stage, when about 10 kg of urea and 5 kg of potassium sulfate are applied per mu to promote rapid differentiation of flower buds and flower buds; the second time is at the early curd stage, when 15 kg of urea and 8 kg of potassium sulfate are applied per mu, which can promote rapid curd expansion; the third time is at the mid-curd stage, when 10 kg of urea and 5 kg of potassium sulfate are applied per mu. After fertilizing, pay attention to the water supply and keep the soil at a certain moisture level, which can speed up the plant's absorption of fertilizer and increase yield.
4. Foliar Fertilization
Foliar fertilization is an auxiliary measure for growing cauliflower. It can supplement the trace elements the plant needs in the middle and late stages and prevent nutrient deficiency symptoms that could cause declines in yield and quality. It should be carried out according to the condition of the plant and soil. For example, if the soil is deficient in boron, a low-concentration borax solution can be sprayed during the curd stage; if it is deficient in magnesium, a low-concentration magnesium sulfate solution can be sprayed 1-2 times; if it is deficient in molybdenum, a low-concentration ammonium molybdate solution can be sprayed. In short, properly carrying out foliar fertilization according to the growth needs of the plant can prevent premature aging and improve quality.
The above is an introduction to cauliflower fertilization techniques. We hope it can help you. To learn more related knowledge, please stay tuned to us.