What causes "summer dormancy" in yardlong beans? Here is the latest explanation

Many crops experience summer dormancy during the growing process, and once summer dormancy occurs, the yield of that crop will be greatly reduced. Yardlong beans are one of our common vegetables. Once summer dormancy occurs, what should we do? Let's take a look together.

I. Symptoms of summer dormancy in yardlong beans

Summer dormancy in yardlong beans mainly manifests as weakened plant growth vigor, yellow leaves, reduced number of flowers, flower drop and poor pod setting, causing a serious decline in yield. Generally, this phenomenon mostly occurs when high-temperature summer weather lasts for a long time, that is, during the dog days, so it is called summer dormancy.

II. Causes

1. High temperature

Yardlong beans have certain temperature requirements. The suitable temperature during the germination stage is between 25-30 degrees, while the seedling stage requires a slightly higher temperature, usually between 30-35 degrees. The suitable growth temperature during the flowering and pod-setting stage is between 25-28 degrees. Once the temperature is too high, yardlong beans are very prone to being unable to pollinate normally.

2. Drought and excessive rain

In summer, many areas have high temperatures and abundant rain, but once the rainy season lasts for a long time, water easily accumulates in the field, and the root system of yardlong beans will suffer rotting, oxygen deficiency and other problems. In summer, if there is no rain for a long time and high temperatures persist, it will also cause yardlong beans to grow slowly and produce fewer flowers. Moreover, after summer rainfall, the temperature rises quickly, making it very easy to trigger pests and diseases.

3. Improper fertilizer and water management

During the growing process, excessive watering easily occurs, especially improper watering during the seedling stage, excessive use of base fertilizer, and one-sided application of nitrogen fertilizer. These problems very easily cause excessive vegetative growth in yardlong beans, resulting in fewer flowers in summer, fewer pods, and low yield.

III. Prevention and control measures

First, before sowing, select good seeds and sow at the right time. Before planting, choose varieties that meet market demand according to local actual conditions. It is recommended to choose yardlong bean varieties with good heat tolerance, strong resistance, and stable yield to reduce the possibility of summer dormancy. Next, control the field environment well to avoid excessive vegetative growth. First, plant at a reasonable density, and also harden the seedlings during the seedling stage to prevent excessive vegetative growth at the seedling stage. In addition, pay attention to pruning and topping yardlong beans to avoid pod-setting positions being too high, which affects yield. There are many pests and diseases in summer, so prevention and control measures should also be done well.

The above is an introduction to what causes summer dormancy in yardlong beans. We hope it can help you. To learn more related knowledge, please follow us.