Nowadays, the small arch shed and the mulch watermelon grow vigorously. The water content of the plant is high, and it is sensitive to many chemical agents. Once the application concentration is too large or the medicine is improperly selected, it is easy to cause phytotoxicity. The remedy after the occurrence of phytotoxicity in watermelon is:
1. Rinse with water. Most chemical agents are not resistant to water scouring. If the concentration of the drug is too high, it may be immediately (preferably within 6 hours after application). The sprayer is filled with clean water and sprayed repeatedly on the stems and leaves to wash away the residue. The agent on the surface of the plant reduces the phytotoxicity; when flushing, the pressure of the sprayer is sufficient, and the amount of water sprayed is large.
2. Attack with poison. Potassium permanganate is a strong oxidant that oxidizes and decomposes a variety of chemicals. According to the test, when the watermelon is phytotoxic or the drug is found to be improper, immediately spraying 5000-7000 times of potassium permanganate can alleviate the phytotoxicity.
3. Suspend medication. Before the phytotoxicity has not been completely removed, minimize the use of chemical pesticides, especially similar pesticides, and stop using them to avoid aggravating the phytotoxicity.
4. Strengthen management. After the phytotoxicity of watermelon, combined with watering to properly supplement some quick-acting fertilizers, and then cultivating the loose soil, it can promote the normal growth and development of the plants as soon as possible.
In addition, it can also be combined with root fertilization and watering, and the foliage is sprayed with phosphorus and potassium fertilizer to improve the nutritional status of the plant and enhance the root absorption capacity. The method is: 1 kg of high-quality superphosphate, add 40-50 kg of water, soak for one night, take the supernatant to spray the watermelon stems and leaves, or use the harvest of 1000 times liquid foliar spray and 800 liquid irrigation; plus 0.2 ~ 0.3% potassium dihydrogen phosphate solution spray 50 kg per acre; root spray 1.8% love more than 6000 times liquid, (or a sprayer with a half bag) is also conducive to the plant to resume normal growth and development.
For watermelon production management carefully, watermelon carbaryl sensitive, do not use this drug in watermelon, watermelon crop avoid chlorine, careful not to use chlorine-containing agents, fertilizer and fertilizer when other medication, so as to avoid injury fat It affects the normal growth of watermelon.
1. Rinse with water. Most chemical agents are not resistant to water scouring. If the concentration of the drug is too high, it may be immediately (preferably within 6 hours after application). The sprayer is filled with clean water and sprayed repeatedly on the stems and leaves to wash away the residue. The agent on the surface of the plant reduces the phytotoxicity; when flushing, the pressure of the sprayer is sufficient, and the amount of water sprayed is large.
2. Attack with poison. Potassium permanganate is a strong oxidant that oxidizes and decomposes a variety of chemicals. According to the test, when the watermelon is phytotoxic or the drug is found to be improper, immediately spraying 5000-7000 times of potassium permanganate can alleviate the phytotoxicity.
3. Suspend medication. Before the phytotoxicity has not been completely removed, minimize the use of chemical pesticides, especially similar pesticides, and stop using them to avoid aggravating the phytotoxicity.
4. Strengthen management. After the phytotoxicity of watermelon, combined with watering to properly supplement some quick-acting fertilizers, and then cultivating the loose soil, it can promote the normal growth and development of the plants as soon as possible.
In addition, it can also be combined with root fertilization and watering, and the foliage is sprayed with phosphorus and potassium fertilizer to improve the nutritional status of the plant and enhance the root absorption capacity. The method is: 1 kg of high-quality superphosphate, add 40-50 kg of water, soak for one night, take the supernatant to spray the watermelon stems and leaves, or use the harvest of 1000 times liquid foliar spray and 800 liquid irrigation; plus 0.2 ~ 0.3% potassium dihydrogen phosphate solution spray 50 kg per acre; root spray 1.8% love more than 6000 times liquid, (or a sprayer with a half bag) is also conducive to the plant to resume normal growth and development.
For watermelon production management carefully, watermelon carbaryl sensitive, do not use this drug in watermelon, watermelon crop avoid chlorine, careful not to use chlorine-containing agents, fertilizer and fertilizer when other medication, so as to avoid injury fat It affects the normal growth of watermelon.
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