What to Do When Ginger Plants Die Off Severely? A Detailed Guide to the Latest Control Methods
Ginger is a common vegetable in our daily lives, but recently many farmers have reported that with the increase in autumn rainfall, the problem of ginger plants dying off has become quite severe, with some plots even suffering total crop failure. So how should severe ginger die-off be controlled? Follow the editor to take a look at the key control points.
1. Improving soil permeability
Poor soil permeability means the roots get less oxygen, root respiration is impeded, and more harmful substances are produced, which lowers the plant's stress resistance and creates favorable conditions for pathogens to invade. This is also one of the main reasons for severe ginger die-off. According to experimental research, in soils with high organic matter content or in sandy soil, where the soil is loose and breathable, the die-off problem is noticeably milder; whereas clay soil has a stronger capacity to retain water and nutrients, so after rainfall the water infiltrates slowly and permeability declines, making root drowning very likely and die-off even more severe.
Control methods: When rainfall is frequent, farmers should find ways to improve soil permeability and avoid damage to the ginger root system. The first step is hilling. Early August is an important period for hilling ginger; as hilling is done, the ginger roots go deeper and permeability is naturally affected. Hilling is usually combined with topdressing, and when hilling and topdressing, it is recommended to add an appropriate amount of peat, fermented straw, and similar materials, which can effectively improve soil permeability and enhance stress resistance. In addition, choosing humic acid fertilizers is also a basic measure for improving poor soil permeability.
2. Soil sterilization
Deteriorated soil with poor permeability often only causes poor root growth and development, but does not cause large numbers of plants to die off. Die-off is often caused by ginger blast and root rot. Increased rainfall makes root drowning very likely, creating opportunities for pathogen infection and easily causing ginger die-off.
Control methods: First, sterilize the soil to reduce the pathogen population. Once yellowing leaves and die-off occur in ginger, check the root condition promptly. If the ginger tubers or roots are rotting, apply medication promptly to kill the pathogens and prevent further spread. In addition, die-off diseases occur and spread quickly, mainly related to a lack of beneficial bacteria in the soil. Continuous application of biological microbial agents can effectively increase the number of beneficial bacteria, improve the soil ecology, and suppress pathogens to a large extent.
3. Supplementing nutrition
Weak ginger roots are also highly prone to disease, and this is closely related to unbalanced nutrition. Many farmers still choose fertilizers based mainly on nitrogen, phosphorus, and potassium. Although ginger has a large demand for medium elements such as calcium and magnesium, farmers lack awareness of this, and calcium fertilizer easily reacts with phosphorus fertilizer and precipitates, so it is rarely applied.
Control methods: To improve the disease resistance of the plants, applying base fertilizer reasonably is key. It should be based mainly on fermented organic fertilizer, with an appropriate amount of medium and trace element fertilizers, for example, 50 jin of calcium magnesium phosphate fertilizer per mu, and 1-2 kg each of trace elements such as boron, zinc, and iron. If trace elements were not supplemented in the base fertilizer, they can be applied reasonably during the plant growth period in combination with hilling and watering to supplement nutrition.
The above is an introduction to control methods for severe ginger die-off. We hope it can help you. To learn more related knowledge, please stay tuned to us.