What fertilizer is best for rapeseed when it turns green?

The greening period of rapeseed is a critical period of growth. At this time, rapeseed begins to sprout and enters the bud stage. Rapeseed flowers are about to bloom. In order to increase the yield and quality in the later stage, fertilization should be done well. So what kind of fertilizer is good for rapeseed to turn green? Let’s learn more about it below.

What fertilizer is best for rapeseed when it turns green?

The greening period of rapeseed is a stage in which vegetative growth and reproductive growth proceed simultaneously, and the nutrient demand is high. Therefore, timely fertilization is crucial. During the greening period, 8-10 kg of urea, 20-30 kg of superphosphate and 10-15 kg of potassium fertilizer can be applied per mu. When applying fertilizer, pay attention to spreading it evenly to avoid burning the seedlings due to excessive local fertilization.

At the same time, you can also spray appropriate amounts of foliar fertilizers , such as potassium dihydrogen phosphate, according to the soil nutrient conditions and the growth of rapeseed to improve the rapeseed's resistance to stress. In addition, depending on whether there is a boron deficiency, boric acid can be sprayed. Boron fertilizer is sprayed with a 0.1-0.2% concentration of borax aqueous solution during the stalk flowering period, and sprayed on the leaves on a sunny day.

What other management should be paid attention to when rapeseed turns green?

1. Reasonable irrigation

Rapeseed requires a lot of water during the green period, and the soil moisture should be maintained at 70%-80%. In case of drought, water should be applied in time to promote the growth of rapeseed. When watering, be careful to avoid flooding to prevent soil compaction and rapeseed lodging. In areas with heavy rainfall, attention should be paid to drainage and waterlogging prevention to avoid waterlogging in the fields that affects the normal growth of rapeseed.

2. Prevent lodging

Measures to prevent rapeseed from lodging include selecting lodging-resistant varieties, promoting early growth in the seedling stage, and enhancing root development, thereby increasing resistance to lodging. During the stalk stage, the soil should be cultivated and fertilizer should be applied correctly to ensure that the spring shoots grow steadily and healthily.

3. Loosening the soil

During the rapeseed regrowth period, the soil should be loosened 2-3 times, with a depth of 3-5 cm. When tilling the soil, be careful not to damage the root system so as not to affect the growth of rapeseed. At the same time, weeds in the field must be removed in a timely manner to prevent weeds from competing with rapeseed for nutrients.

4. Pest and disease control

Pest and disease control should be carried out in time during the greening period. Specific measures include: selecting disease-resistant varieties, strengthening field management, regularly checking insect infestation, and spraying pesticides in a timely manner. When using pesticides, strictly follow the usage and dosage on the instructions to avoid pesticide damage and environmental pollution.

That’s it