If ginger leaves turn yellow, you should start from the following aspects: First, remove the film in time to prevent physiological yellow leaves caused by high temperature.

The outside temperature is high. Although the ginger grown in small sheds adopts the method of drilling holes for ventilation and cooling, without removing the film, the temperature inside the shed is very high. High ground temperature affects the expansion of ginger pieces and also affects the root system.

The penetration and absorption of the film will cause the leaves to turn yellow. Therefore, ginger farmers are reminded to remove the film in time, but the removal of the film should be done in the afternoon on a cloudy day to avoid infection due to drastic changes in environmental conditions.

Secondly, it is necessary to prevent bacterial diseases from occurring as soon as possible after removing the film.

After the film is removed, ginger grows in the open field, which is greatly affected by weather and rain. When the humidity is high, ginger is easily infected with bacterial diseases, leading to yellowing of leaves.

Therefore, early prevention is necessary.

For plots where the film has not been removed, s-induced antibiotics can be used to improve the disease resistance of the plants before removing the film. At the same time, attention should be paid to the application of streptomycin and 800 times of Zhongshengmycin or 1000 times of quinolinone.

Prevent bacterial diseases of ginger.

Also, be careful to prevent leaf blight on large turmeric leaves.

The disease is more serious in summer when the weather is hot and rainy, or when the dew is heavy in the hot season.

Therefore, it is necessary to do a good job in cooling down. When the temperature difference is large after rainy days, there will be more condensation at night, and spraying should be carried out in time.

It can be controlled with 10% difenoconazole 1500 times solution and 50% carbendazim 400 times solution.