Preventive measures for bolting of coriander

Coriander bolting is a phenomenon that affects the yield and quality. Generally, coriander sowed in summer is easy to soak because of long sunshine, improper selection of varieties will also cause bolting, and bolting of seeds collected in the same year is earlier than that of overwintering seeds after sowing. So how to prevent parsley bolting? Let's take a look at the detailed introduction.

1. Select improved varieties

Parsley is controlled by genetic genes, and its bolting performance is different among its varieties. generally speaking, leaflet varieties are more likely to plant bolting, and some begin bolting when they grow to 10cm. On the other hand, the big-leaf varieties are more tolerant to bolting, and their bolting time is relatively late. As long as the cultivation and management is proper, the plant height 30cm will not bolting 40 days after emergence. Therefore, it is recommended to choose cold-resistant and bolting-resistant varieties with large leaves when planting, such as Xiang Shuai, Milan, four Seasons of Australia and so on.

2. Apply sufficient base fertilizer

The nutritional status of soil has a direct impact on the growth and development of crops. according to studies, in the case of insufficient soil moisture and nutrition, especially the lack of nitrogen fertilizer, it will promote the reproductive growth of crops and lead to early bolting and flowering. Therefore, when planting coriander, we should choose a fertile soil environment and apply sufficient base fertilizer when preparing the soil. Organic fertilizer or farm manure is the best base fertilizer, which must be sufficient and balanced. Can be applied per mu of rotten chicken manure or farm fertilizer 3000 kg, with high nitrogen and high potassium compound fertilizer 40 kg, urea 20 kg, spread them evenly on the soil, combined with ploughing mixed into the soil.

3. Sowing seeds at the right time

In the case of long sunshine in spring and summer, the main cause of coriander bolting at low temperature, so in the northern areas with low spring temperature, it is best to choose the sowing time in early April. If it is planted in a greenhouse, it can be sowed 15-20 days in advance, but when growing in the greenhouse, we should pay attention to windproof and temperature control, and it is best to control the temperature in the greenhouse between 15-20 degrees. Too low and too high temperature will also cause bolting.

4. Timely harvest

The growth cycle of coriander is relatively short, it can be harvested after 40 days of emergence, no more than two months at the latest, when the plant is between 25-30cm, it is also large and tender, with bright green leaves, good taste and high yield. However, if the harvest is too late, the plant will age, not only will bolting, its quality and taste will also decline, so the loss outweighs the gain, so timely harvest is also one of the measures to prevent parsley bolting.

The above is the introduction of preventive measures for parsley bolting. I hope it can help you. If you want to know more about it, please pay attention to us.