What special-effect chemicals are used to straighten and lengthen yardlong beans

Yardlong beans are one of the popular vegetables widely cultivated in northern China, and their popularity ranks first among all kinds of vegetables. However, quite a few farmer friends report that the yardlong beans they grow are neither long nor straight, and sell poorly. So, what special-effect chemicals are used to straighten and lengthen yardlong beans?

1. What special-effect chemicals are used to straighten and lengthen yardlong beans?

The special-effect chemicals for straightening and lengthening yardlong beans include Doushu Nenzhi Huajia Bao, Sule Boron, Yuhualing No. 1, Yuhualing No. 6, and others. In addition, a special foliar fertilizer for lengthening and straightening yardlong beans can also be sprayed.

2. What causes yardlong beans to grow crooked?

1. Poor quality of the yardlong beans. First consider whether the variety is good or bad. Some varieties produce more curved pods when setting pods, and some have poor resistance to adverse conditions; when they encounter unfavorable weather, the quality of the pods becomes very poor. Therefore, choosing seeds with strong resistance and good quality is key.

2. Boron deficiency in the early stage. Boron deficiency in leguminous vegetables such as yardlong beans and kidney beans affects flower bud differentiation, and even if the pods set, it can cause problems such as curving and poor market quality. The solution is to spray a boron-containing foliar fertilizer such as Carbon Energy Boron before flowering.

3. Too high a temperature. The suitable temperature for yardlong bean growth is 20—25°C during the day, 15-18°C at night, and 23-25°C during the flowering period. If the daytime temperature exceeds 30°C, pod setting will be affected and the quality of pod setting will be reduced. Therefore, at noon during the flowering period, you must go to the greenhouse to observe, ventilate in time, and regulate the greenhouse temperature well.

4. Phytotoxicity. Leguminous vegetables are sensitive to many crop protection products, such as pyrimethanil, mancozeb, iprodione or prochloraz; excessive application can easily cause pods to curve. Yardlong beans are very sensitive to oxadixyl and are prone to phytotoxicity, resulting in deformed pods; some yardlong beans also showed phytotoxicity after spraying copper preparations and anthracnose Fumei, with mild cases causing curved pods and severe cases causing leaf and pod drop. In addition, attention should also be paid during the application of insecticides to avoid phytotoxicity. This is aimed at the characteristic that leguminous vegetables are sensitive to chemicals.

5. Caused by failure of pollination and fertilization, which is related to temperature; boron deficiency also causes curving and few seeds.

In addition to using special-effect chemicals to make yardlong beans longer and straighter, you can also choose excellent varieties and apply fertilizer reasonably to increase yield and income.