What are the common pest and disease control methods for hyacinth beans?
Hyacinth beans have strong adaptability. Generally, planting just a few plants and providing them with a trellis to climb on allows them to grow well and produce a relatively high yield, making them a vegetable many farmers like to grow. However, if planting and management are improper, they are susceptible to pest and disease infestations, which in severe cases can lead to total crop failure and cause great frustration. So how do you control these pests and diseases? Below, Qinong Net brings you the common pest and disease control methods for hyacinth beans.
1. Rust
Rust mainly damages the leaves. In the early stage of the disease, yellow-white lesions appear on the leaves, with protruding small pustules within the lesions that crack and release rusty-colored powder. As the disease progresses, the lesions expand and dark brown spots appear; after rupturing, dark brown powder is released, and finally the leaves wither, turn yellow and drop off, causing great damage.
Control methods: Rust mainly overwinters as spores in the soil or on other diseased plant debris. It continues to cause damage the following year. After harvest, promptly collect the diseased plant debris and burn it in a centralized manner, then deep-plow the soil and expose it to the sun until it turns white, and disinfect it once more before planting. During planting, apply more phosphorus and potassium fertilizer to improve the plants' disease resistance. When the disease occurs, spray with triadimefon to eliminate the disease.
2. Viral disease
The symptoms of viral disease vary when it occurs, such as the leaf-shrinking type and the clear-vein crinkling type, each with different characteristics. When the disease occurs, the leaves are mosaic-mottled and deformed, while some leaves become smaller, or the leaves curl and do not spread out, and the plants are stunted.
Control methods: It is mainly transmitted by insects, but high-temperature climates, dry environments, and plants growing in poorly drained soil with a relatively heavy clay texture can also contribute to its occurrence; in addition, excessive application of nitrogen fertilizer can also cause the disease. In the early stage of the disease, spray with agents such as antiviral agents or Bingdujing.
3. Anthracnose
Anthracnose can occur at the seedling stage and on mature plants. When it occurs at the seedling stage, lesions appear on the cotyledons, and when the temperature is too high, pink sticky matter appears on the lesions. When mature plants are infected, lesions appear on the leaves, and red-brown lesions appear on the petioles and stems. In high-temperature and humid environments, lesions also appear on the stems and vines, and as the disease worsens, the plants rot and die.
Control methods: Disinfect the seeds and soil before planting, avoid continuous cropping, and rotate with non-legume crops for more than 2 years. Strengthen field management. When diseased plants are found, promptly clean them up, pull them out and burn them, and deep-plow the soil to prevent the pathogen from spreading again. When the disease occurs, carbendazim wettable powder can be used for root drenching.
4. Aphids
Aphids, also called honey insects, mainly damage the leaves and tender parts of plants. They generally like to gather on the undersides of leaves to suck sap, causing leaves to shrink, curl and turn yellow, hindering the normal function of the plant and ultimately causing the plant to wilt and even die.
Control methods: Before overwintering, completely clear away weeds and debris, deep-plow the soil, and eliminate the eggs. Aphids reproduce fastest at a temperature of 23-27°C and a humidity of 75%-85%. Strengthen management to create an environment unfavorable for aphid growth. Natural enemies can also be used for control, and chemical agents can also be sprayed for control.
The above are the common pest and disease control methods for hyacinth beans brought to you by Qinong Net. The introduction to the control methods for hyacinth bean pests and diseases ends here. For more related agricultural knowledge, please stay tuned to Qinong Net.