Does葡萄裂果 (Grape Fruit Splitting) Relate to Temperature?
Abstract: This article discusses whether grape fruit splitting is related to temperature, as well as explaining the reasons for grape fruit splitting and the prevention and control measures. Let's take a look together.
Grape fruit splitting and temperature are somewhat related. High temperatures during the young fruit stage can cause splitting. "The grapevine climbs high with purple tendons, and a branch hangs with golden pendants." This is Tang Yanxian's portrayal of grapes. Indeed, grapes have an appealing appearance, and their flesh is sweet and sour, which can stimulate the appetite and benefit the spleen. They also have the effect of preventing cardiovascular and cerebrovascular diseases, making them a fruit widely loved by people. Grapes have a long history and are one of the oldest fruit tree species in the world, now widely cultivated. Grape fruit splitting is a major challenge for growers, let's see what exactly is going on.
I. Does Grape Fruit Splitting Relate to Temperature?
Grape fruit splitting and temperature are somewhat related. High temperatures during the young fruit stage can cause splitting, a situation that usually occurs in greenhouse greenhouses. When cultivating grapes in a greenhouse, it is best to keep the temperature below 26 degrees Celsius.
II. Reasons and Prevention Measures for Grape Fruit Splitting
1. Reasons for Splitting
(1) Variety reasons. Grapes come in many varieties, with different skin thicknesses, flesh hardness, and resistance to pressure. Therefore, different varieties of grapes may have different degrees of splitting.
(2) Improper moisture control. To accumulate sugar, the soil is kept relatively dry during the early growth stage of the fruit. If the fruit is exposed to heavy rain or excessive watering suddenly during its coloring period, it can cause a sudden increase in fruit pressure, leading to splitting.
(3) Improper fertilization. Uneven application of fertilizer to grapes and imbalance in the supplementation of various trace elements can lead to uneven soil nutrients, reducing the soil's ability to regulate fertilization and water, resulting in more splitting during the expansion stage of the grapes. Especially the lack of calcium, boron, and zinc can easily have adverse effects on plant growth.
(4) Improper pruning. Inadequate pruning, leaving too many branches, clusters, and berries, can have adverse effects on the plant. Too many branches can affect sunlight and ventilation, while too many clusters and berries can lead to insufficient leaf numbers, causing uneven metabolism between leaves and fruit, making the fruit skin prone to splitting.
(5) Improper drug use. Continuously applying fungicides like thiabendazole to grapes to prevent diseases may cause excessive evaporation of fruit moisture, causing internal plant moisture to flow to the fruit, resulting in fruit expansion and splitting due to the inability of the skin to withstand it.
(6) Improper use of growth hormones. Applying too much fruit-setting medicine or triazole drugs during the flowering stage of the plant, or applying too much bulking agent during the later stages of fruit growth, can lead to splitting.
(7) Adverse effects of extreme weather during the young fruit stage. When grapes encounter high temperatures or strong winds during the young fruit stage, it can affect fruit development and cause splitting.
(8) Disease and pest infestation. When grapes are affected by diseases or pests, the fruit may develop wounds, leading to splitting. For example, damage from thrips, green vegetable bugs, or gray mold can cause splitting.
2. Prevention and Control Measures
(1) Choose varieties with strong resistance to splitting for planting.
(2) Prevent soil moisture imbalance. Water the plants promptly during dry periods and drain the water promptly after heavy rain. In times of abundant rain, cover the soil with a layer of plastic mulch.
(3) Supplement trace elements for the plant in a timely manner and ensure balanced supplementation of various elements when fertilizing, avoiding excessive use of nitrogen fertilizer.
(4) Prune moderately, do a good job of thinning flowers, fruit, branches, and clusters, preferably maintaining a leaf-to-fruit ratio of about 15-20:1.
(5) Use drugs moderately and appropriately, dilute the drugs before use, and alternate the use of different pesticides.
(6) Use growth hormones strictly according to a certain proportion, avoid high concentrations, and apply them in the morning. It is possible to apply some calcium fertilizer to the plant during the early or middle stages of fruit growth to prevent splitting.
(7) When the fruit is in the young fruit stage, keep its cultivation temperature appropriate and not too high.
(8) Prevent and control diseases and pests in a timely manner, but avoid excessive use of fungicides like thiabendazole.
The above content about whether grape fruit splitting is related to temperature and the detailed reasons for grape fruit splitting and prevention and control measures are hoped to be helpful to green plant enthusiasts!