What medicine works well for bacterial angular leaf spot

When bacterial angular leaf spot occurs, you can spray chunleimycin, agricultural streptomycin, xinzhimycin, nongkang 751, copper sulfate-succinate plus zhongshengmycin compound, thiazole zinc plus zhongshengmycin compound, zhongshengmycin plus streptomycin plus adjuvant, chlorobromoisocyanuric acid, thiazole zinc, yekuzuo, and other such agents.

Bacterial angular leaf spot is a plant disease, and its conditions for onset are as follows:

1. Generally, greenhouses and plastic tunnels with low temperature, high humidity, and continuous cropping suffer more severe disease.

2. This disease is a bacterial disease. The pathogen overwinters in seeds or in the soil along with diseased plant residues. The following spring, it develops after rain or irrigation water splashes onto stems and leaves. The bacterial ooze spreads through rainwater, insects, farming operations, and other routes.

3. The suitable temperature for onset is 18-25°C, and the relative humidity is above 75%. The disease is severe when there is much rainfall, high humidity, low-lying terrain, improper management, continuous cropping, and poor ventilation.

4. When phosphorus and potassium fertilizers are insufficient, the disease is also severe.

5. For open-field cucumbers north of the Yellow River, mid-July each year is the peak period for angular leaf spot onset, and April-May is the peak period for onset in greenhouses and plastic tunnels.

Bacterial angular leaf spot often harms crops such as cucumber, watermelon, yardlong bean, cotton, and sweet persimmon, so growers should carry out prevention and control work in advance.