The Latest Field Management Techniques and Methods Tutorial for A-choy

A-choy is a variety of lettuce, a vegetable cultivar developed in recent years, and its cultivation and management differ from those of lettuce. A-choy is mainly grown for its leaves, so its fertilizer and water requirements are different. Thus, the growth characteristics of A-choy determine the management content. The weather and environment determine the focus of pest and disease control. The specific management tasks are as follows, please stay tuned.

1. Transplanting

Transplant when 5 to 6 leaves have grown. Before transplanting, flood-irrigate to soak through, then lift the seedlings when the soil is moist and loose. Do not water until it turns to muddy soup, or the seedlings will not be able to carry soil for transplanting. Try to damage the roots as little as possible. For seedling raising, lifting the seedlings is relatively easy without watering, so as to avoid the nutrient soil crumbling. Transplant loosely, not densely. Roughly 20 cm between rows and 10 cm between plants. Adjust flexibly in practice. After transplanting, it takes about 10 days to recover. Do not apply fertilizer or water during this period.

2. Fertilizing

For the field base fertilizer, apply about 1200 jin of barnyard manure. You can add about 200 jin of plant ash, applied in furrows between rows for higher absorption and conversion rate; broadcasting over the whole field is less concentrated but is very good for improving the soil. For topdressing, mainly apply more nitrogen fertilizer. When the plants grow to 15 cm tall, you can spray a 1 to 300 monopotassium phosphate solution to supplement nutrients. You can also dissolve 10-15 kg of urea in water and apply it through irrigation.

3. Drainage and Irrigation

10 days after transplanting, once the seedlings have recovered and the roots and other growth are normal, water once to help the seedlings recover. If the soil moisture is good, watering can be postponed. A-choy needs sufficient water to maintain leaf growth, but beware of excessive humidity causing downy mildew, or waterlogging damaging the basal leaves. Maintaining about 60% soil moisture is sufficient.

4. Pests and Diseases

Downy mildew occurs frequently, mainly infecting stems and leaves, or leaves near the base, mainly producing water-soaked lesions that expand into large areas of rot and develop white mold. Before the disease occurs, spray 200 times diluted high-fat film (emulsion), once every 10 days. In the early stage of the disease, spray 75% chlorothalonil wettable powder at 500 times dilution. In severe cases, spray 58% metalaxyl·mancozeb wettable powder at 500 times dilution. The main pest is aphids, which suck the leaves; when they occur in large numbers, use 50% pirimicarb wettable powder or 50% fenitrothion emulsion at 1000 times dilution for control.

5. Cultivation and Weeding

After planting, use herbicide as soon as weeds are found, but it is best to use plant-based herbicides. When there are few weeds, they can be pulled by hand; use as little herbicide as possible. Leafy vegetables are prone to herbicide damage. Cultivation can be done after rain, which helps avoid soil compaction.

That is all about the specific management tasks. If you have your own management experience, you can refer to it and combine it in practice. I hope this helps everyone, thank you for your support.