What is the appropriate temperature for growing beans?

Beans are a plant that is relatively sensitive to temperature. They can withstand certain high temperatures and drought conditions, but have poor tolerance to cold and waterlogging. Beans need plenty of sunlight to support their photosynthesis, so the place where beans are planted should ensure good lighting conditions. In terms of soil selection, beans are more suitable for planting in neutral sandy loam, which has good drainage and is conducive to the growth of bean roots and the absorption of nutrients. Let’s learn what is the suitable temperature for growing beans?

What is the appropriate temperature for growing beans?

The ideal growing temperature range for beans is between 20 and 25 degrees Celsius, which is conducive to the healthy growth and development of beans.

Key points for high-yield cultivation of beans

1. Planting and transplanting

Beans can be sown directly or transplanted after seedling raising. Seedling transplanting helps control the vegetative growth of the plant and promote reproductive growth. Seedlings are usually grown in nutrient pots or insulated seedbeds. The timing of planting beans depends on the cultivation method and growth goals. If you use nutrient soil blocks to grow seedlings, you can transplant them when the first compound leaf unfolds; if you use nutrient pots to grow seedlings, you can wait until there are 2 to 3 compound leaves before transplanting. The best time to plant in greenhouses is in late March, in small greenhouses in early April, in mulch cultivation in mid-April, and in open field cultivation in late April. When planting, the width of each bed is 1.8 meters (including furrows), with two rows planted, a row spacing of 80 to 100 centimeters, a hole spacing of 22 to 25 centimeters, and 3,000 holes planted per 667 square meters.

2. Watering and fertilizing

Fertilizer and water management should be properly controlled before beans set pods to prevent the plants from growing too tall and affecting flowering and pod setting. After pod formation, fertilizer and water management should be strengthened, combined with topdressing and watering to ensure sufficient quick-acting nutrients to support the growth of beans. If there is sufficient basal fertilizer, topdressing is generally not required in the early stages of the plant. After pod formation, the plant's demand for nutrients increases, and this is the critical period for topdressing.

3. Lighting

Beans love light. If there is insufficient light during the flowering and pod-setting period, it may cause the flowers and pods to fall off. Therefore, make sure the beans get plenty of sunlight. At the same time, diseased and old leaves should be removed in time to reduce nutrient waste, improve field ventilation and light transmission, and reduce the spread of diseases.

4. Topping

Topping, that is, pinching off the top buds on the top of the plant, can promote rooting and lateral branch growth of beans and increase the rate of flowering and podding. The root system of beans is relatively developed, so topdressing can be appropriately controlled in the early stage to prevent the stems and leaves from growing too long.

5. Prevent insects and treat diseases

The main diseases of beans include rust, downy mildew, anthracnose, leaf spot, etc., and the main insect pests are aphids, bean borer, etc. Rust disease can cause red rust spots to appear on the leaves, affecting their edible properties. In the early stage of the disease, you can use oxycarboxin spray to prevent and control it. The bean borer lays eggs in flower buds and young shoots, and invades and causes damage after hatching. It should be controlled by spraying with cypermethrin or cypermethrin during the peak period of egg hatching.

In short, the optimal temperature required for beans will be different at different growth stages. Any crop has its most suitable growth temperature. If it is not reached or exceeded, the quality and yield will be affected.