Causes and remedial measures of drug damage to pomelo

The oil bubble on the skin of honey pomelo is large, and the pericarp is smooth and delicate in the young fruit stage, so it is extremely vulnerable to drug damage caused by irritant chemicals, which will seriously affect the economic interests of growers. So how to deal with the drug damage of pomelo? Let's get to know it with the editor.

1. Symptoms of drug damage

The drug damage is mainly manifested in leaves, flowers and fruits. When the leaves are damaged, spots and scorched perforations of different shapes and colors will appear, and the leaves will be light green, yellowed, scorched, deformed and shedding. When drug damage occurs in flowers, it mainly occurs in the flowering period, mainly due to improper use of hormones and high concentration of drugs, resulting in flower organ shedding, premature withering, unfruitful flowers and so on. When the fruit is damaged, brown spot, macula, small fruit, thick skin, deformity and so on will appear on the fruit surface.

2. Types of drug damage

The types of drug damage can be divided into acute drug damage and chronic drug injury, in which acute drug damage will appear after spraying for a few hours, resulting in dripping spots, wilting, yellowing, chlorosis, albino and so on. In general, chronic drug damage will not immediately appear symptoms, or the symptoms are not obvious, but will affect the growth and development, mainly manifested in the weakening of photosynthesis, slow growth and development, fruit deformity, resulting in a serious decline in yield and quality.

3. Causes of drug damage

First of all, there are problems with pesticides, such as purchasing fake drugs, expired drugs, containing invisible ingredients, substandard content of active ingredients, harmful impurities in the products, problems with product certificates, inconsistent registration information and labels, and other pesticides, drug damage may occur after spraying. In addition, the spraying time is not right, for example, spraying in the high temperature period, because the high temperature will evaporate the liquid, causing the drug concentration to be too high, so it will cause drug damage; in addition, because of the high humidity and poor ventilation in the orchard after spraying, the liquid will not only dry quickly, but also cause drug damage. The mixture of pesticides is too much, the dilution is unreasonable, and it is easy to cause drug damage, and too much dose during spraying will also cause drug damage.

4. Remedial measures

If the drug damage is found earlier, it can be washed by spraying water immediately, which can dilute the pesticides on the leaves and reduce the content of pesticides in the crops. The fruits of drug damage should be removed in time, so for the sake of yield and quality in the future, we can also spray brassin 2000 times + potassium foliar fertilizer 2000 times, spray to the feeling of stagnant water, can alleviate the drug damage.

The above is the introduction of the causes and remedial measures of pomelo drug damage. I hope it can help you. If you want to know more about it, please follow us.