What to Do About Flower and Fruit Drop in Greenhouse Eggplants? Detailed Prevention and Control Measures
For peppers and eggplants, adopting greenhouse cold-bed seedling raising and transplanting technology is the main measure to increase early-stage yield and achieve early fruiting, early marketing, and high returns. 1. Greenhouse construction: choose a site that is sheltered from wind and faces the sun, with flat terrain, fertile soil, convenient drainage and irrigation, a low groundwater table, close to a water source, and where solanaceous vegetables have not been grown for many years...
Because during the flowering and fruit-setting period of greenhouse eggplants the greenhouse temperature is too high or too low, the planting density is too high, light is insufficient, fertilizer and water management is improper, and other factors, severe flower and fruit drop in greenhouse eggplants often occurs, directly affecting the income of vegetable growers. Corresponding measures can be taken to prevent flower and fruit drop in greenhouse eggplants.1. Strengthen greenhouse temperature regulation. Control the daytime temperature at 25-28°C, and ventilate promptly when it exceeds 30°C; the nighttime temperature should preferably be 16-17°C.
2. Plant at a reasonable density and adjust the plants in time. During plant growth, remove the side branches below the first branch, pick off old leaves and diseased leaves, and prune and thin branches in time to form a reasonable plant structure. At the same time, spray Chuhuawang No. 3 to inhibit excessive growth of the main shoot and promote flower bud differentiation.
3. Strengthen fertilizer and water management. In the early stage, watering management for eggplants should focus on control, with less irrigation and more loosening of the soil. In particular, during the flowering period of the first eggplant, soil moisture must not be too high. Before flowering, spray Caiguo Zhuangdiling to improve pollen quality, enhance the cyclic fruit-setting rate, and reduce the occurrence of flower and fruit drop, so that eggplants continuously maintain stable yield and high quality. When the first eggplant grows to the size of a walnut, apply topdressing and irrigate, applying 10 kg of urea per mu. At the same time, pay attention to the combined application of phosphorus and potassium fertilizers. Also spray 800-fold diluted Xingao Zhimo solution to improve the utilization rate of the effective components of the fertilizer, and when irrigating, adopt the method of irrigating in the morning on sunny days and irrigating between furrows.
4. Prevent and control diseases and insect pests. Timely control should be carried out in the early stage of disease and insect pest occurrence. According to plant protection requirements, spray targeted pesticides such as 500-800-fold diluted 75% chlorothalonil solution and 2000-fold diluted 15% pyridaben emulsifiable concentrate for control. At the same time, spray 800-fold diluted Xingao Zhimo solution to improve the utilization rate of the effective components of the pesticide and consolidate the control effect.