How to prevent and control common ginger pests and diseases? A full analysis of control methods

During its growth, ginger is attacked by a variety of pests and diseases, which seriously affect the yield and quality of ginger and reduce growers' income. Some growers do not understand the symptoms and control methods of these pests and diseases, and are at a loss once the plants are attacked. Follow the editor below to learn about the control methods for common ginger pests and diseases.

1. Ginger blast

Ginger blast is one of the main diseases of ginger. After infection, ginger generally loses 20%-30% of its yield, and in severe cases up to 80%, making it extremely harmful. This disease mainly damages the rhizome of ginger. When it occurs, water-soaked lesions appear on the affected part; as the disease develops, the lesions turn yellowish-brown and lose their luster, the internal tissue begins to rot, and eventually the plant dies because the rhizome loses its ability to absorb nutrients.

Control methods: This disease is mainly caused by infection with pathogenic bacteria, so seed ginger and soil should be disinfected before planting to eliminate the pathogens, and clean water should be used for watering along with pollution-free fertilizers. Diseased plants should be pulled out promptly, taken out of the field and burned, and the diseased planting holes should be disinfected. During an outbreak, agents such as Miejunwei, Genfuling, Dexon and Junkang can be used as a root drench for control.

2. Rot disease

When rot disease occurs, the leaves of ginger turn yellow, gradually shrink and dry up, and eventually the whole plant dies. Usually after infection, the root system becomes soft and then rots, giving off a foul odor.

Control methods: The pathogen of this disease mainly infects plants through wounds on the ginger, so special care should be taken during planting not to damage the surface of the ginger, and when the disease occurs, agents should be sprayed for control.

3. Leaf spot disease

Leaf spot disease mainly damages the leaves. When it occurs, spindle-shaped or oblong lesions appear on the leaves, with brown edges and a yellow-white center, and they perforate very easily. In the later stages of the disease, large numbers of small black dots appear on the lesions, and in severe cases the leaves are covered with lesions of various sizes. Its pathogen is Phyllosticta zingiberi, and it is highly contagious, able to spread through wind and rain. It is prone to occur in warm, humid conditions, with dense foliage between plants and high field humidity.

Control methods: Practice reasonable crop rotation, avoid continuous cropping, and increase the application of organic fertilizer to improve the plant's disease resistance. In the early stage of the disease, agents such as thiophanate-methyl wettable powder and chlorothalonil wettable powder can be sprayed for control.

4. Ginger stem borer

The ginger stem borer, also called the shoot borer, mainly damages plants as larvae. The larvae bore into ginger seedlings, causing the leaves to turn yellow and wither, and in severe cases the plants die.

Control methods: Capture and kill the adults to prevent them from reproducing rapidly. During the larval stage, pyrethroid pesticides can be sprayed to kill them; spraying them on the heart leaves of the seedlings gives excellent results.

5. Ginger maggot

The ginger maggot is mainly a pest of ginger during storage, affecting the yield and quality of ginger. The larvae bore into the ginger and keep feeding, leaving only the skin at the damaged parts; in addition, their excrement causes the ginger to rot.

Control methods: Clear the source of the pests and immediately discard seed ginger that is found to be damaged. During storage, thoroughly clean the ginger cellar and spray dichlorvos to kill the ginger maggots.

The above are the control methods for common ginger pests and diseases. We hope they help you. To learn more about ginger cultivation, please stay tuned to us.