In August and September, Wang Tianjiao enters its most productive phase. During this time, the plant has a high demand for water and nutrients, making it particularly vulnerable to pests and diseases. This period is critical, as any neglect can lead to significant yield loss. To ensure a successful harvest, it's essential to implement scientific management practices, focusing on disease prevention, proper irrigation, and nutrient supply to enhance both yield and fruit quality. Here are three key areas to focus on:
First, water and fertilizer management. After entering the fruiting stage, Wang Tianjiao experiences rapid growth and requires more nutrients and water. However, this period often coincides with hot and rainy weather, increasing the risk of issues like leaf drop, fruit fall, and root damage. It's crucial to maintain consistent watering and apply 30 kg of a balanced nitrogen, phosphorus, and potassium compound fertilizer per mu. Additionally, using potassium sulfate during irrigation helps improve fruit development. Foliar sprays containing calcium, magnesium, iron, manganese, and boron are also beneficial. Since peppers are highly sensitive to boron, applying a boron solution can significantly reduce flower and fruit drop, increase fruit set, and improve overall quality. As the fruits begin to change color, water should be carefully controlled. In heavy rain, drainage must be ensured to prevent waterlogging, which can suffocate the roots. When performing fieldwork like weeding or fertilizing, care should be taken to avoid damaging the root system.
Second, disease prevention and control. Common diseases during the fruiting stage include viral infections, bacterial wilt, scab, anthracnose, and others. These can severely impact yield and fruit quality if not managed properly. For viral diseases, a mixture of virus A (600 times dilution), spring (750 times), and zinc sulfate (1000 times) can be sprayed. In case of an outbreak, antiviral agents like Antiviral 400 times or Jin Lei 400 times can be used. Bacterial wilt can be treated with spring (750 times) applied to the roots and stems. Scab disease should be managed with spring (750 times), sprayed every 7–10 days. Anthracnose can be controlled with Fuxing (8000 times) or a 600 times solution. Regular monitoring and timely intervention are key to preventing widespread damage.
Third, pest control. Common pests such as aphids, thrips, and stink bugs require targeted treatments. Aphids can be controlled with 10% imidacloprid at 1500 times dilution. Thrips and blind stink bugs can be managed with 40% acephate at 1300 times. For lepidopteran pests like cotton bollworms, diamondback moths, and beet armyworms, 15% chlorfenapyr at 4000 times dilution is effective. Additionally, 73% krypton can be used at 1000–1500 times dilution for aphid control. Integrated pest management strategies, including regular scouting and proper application timing, are essential to minimize crop losses.
By focusing on these three aspects—water and fertilizer management, disease prevention, and pest control—farmers can significantly improve the health and productivity of their Wang Tianjiao crops during this crucial period.
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