What are the control methods for cucumber fruit abortion in greenhouses?
How to prevent and control fruit abortion in greenhouse cucumbers? What causes cucumber fruit abortion? We also ask knowledgeable readers to help explain. Cucumber fruit abortion is mainly caused by unsuitable external environmental conditions or inadequate technical management, which often leads to the phenomenon of cucumber fruit abortion. Therefore, Zhongdi Web has compiled the causes and solutions for cucumber fruit abortion, listed in detail below...
How to prevent and control fruit abortion in greenhouse cucumbers? What causes cucumber fruit abortion? We also ask knowledgeable readers to help explain.Cucumber fruit abortion is mainly caused by unsuitable external environmental conditions or inadequate technical management, which often leads to the phenomenon of cucumber fruit abortion. Therefore, Zhongdi Web has compiled the causes and solutions for cucumber fruit abortion, listed in detail below for readers' reference.
Cause 1. Fruit abortion caused by high temperature:When the daytime temperature exceeds 320C and the nighttime temperature is above 180C, it will hinder photosynthesis in cucumbers, significantly enhance respiration, and cause fruit abortion due to nutritional deficiency. Higher temperatures can also affect female flower differentiation, making deformed cucumbers more likely.
Solution:Strengthen temperature regulation and management to provide suitable temperatures for cucumber growth. Keep the indoor temperature (greenhouse) at 20-250C during the day and 12-160C at night.
Cause 2. Fruit abortion caused by low temperature:In the cold winter season, when continuous cloudy, rainy, foggy or snowy weather occurs, the ground temperature drops. The cucumber root system's absorption capacity greatly decreases due to the lower temperature, resulting in insufficient nutrient supply to the plant and causing fruit abortion.
Solution:Raise the temperature to restore the vitality of the cucumber root system. If heating facilities are available, heat the greenhouse to increase both the air temperature and ground temperature inside. At night, cover with straw mats or straw curtains and other insulating materials to improve the greenhouse's heat retention.
Cause 3. Fruit abortion caused by pests and diseases:In greenhouse production, cucumber downy mildew, bacterial angular leaf spot, powdery mildew and other diseases often harm cucumber leaves, weakening the leaves' ability to produce nutrients. Aphids, whiteflies and other pests also harm the plants and leaves. All of these affect the normal photosynthesis of cucumber leaves, leading to insufficient nutrient supply and causing fruit abortion.
Solution:When pests and diseases are detected, timely prevention and control measures should be taken.
Cause 4. Fruit abortion caused by improper fertilizer and water management:During the peak fruiting period, cucumbers have a high demand for water and fertilizer. If the supply of fertilizer and water is insufficient, photosynthetic products decrease, which can also cause fruit abortion. In addition, excessive application of nitrogen fertilizer can cause excessive vine growth and lead to fruit abortion.
Solution:Ensure sufficient water and fertilizer supply. During the peak fruiting period, apply fertilizer along with irrigation, combining farmyard manure with chemical fertilizers. Biogas slurry can also be applied by flushing with water. Pay attention to appropriately increasing the application of phosphorus and potassium fertilizers and supplementing trace elements such as zinc and boron to enhance the plant's resistance.
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