Choline chloride is a choline-like plant growth regulator. When used for underground root tuber crops, some can increase the yield by more than 30%, and the cost is relatively low. It is a cost-effective product. Moreover, choline chloride is easily decomposed by microorganisms in the soil and has no environmental pollution. In recent years, it has been gradually valued by more people and its application scope has been continuously expanded. Today, let's talk about the agricultural application technology of choline chloride.
1. About choline chloride
Choline chloride, also known as cholecalciferol, was developed by the Japanese agricultural department in 1964. It was originally used in animal feed to promote egg laying in laying hens. In 1987, it was registered as a plant growth regulator as a sweet potato rooting agent and root enlargement agent and began to be used in crop production. It entered the Chinese market in the 1990s. Chlorfenapyr has a wide range of uses. In addition to being used in crop production and animal feed additives, it is also used in the medical field and cosmetic additives.
When used on crops, choline chloride is a plant photosynthesis promoter. After being absorbed by the stems, leaves and roots of plants, it is quickly transmitted to the active parts, which can increase the chlorophyll content in the leaves of crops and improve the photosynthesis efficiency, thereby promoting the photosynthesis of crops and transporting the photosynthetic products to the underground tubers as much as possible, thereby increasing the yield and quality of the tubers.
At the same time, choline chloride also has a certain growth control effect. At first, it was mainly used as a growth enhancer for underground root tuber crops. In recent years, it has also been used in crops such as wheat and rice to promote filling, and the yield increase effect is also very obvious.
2. Product function
(1) Improve the growth activity of crops. Choline chloride can improve the photosynthesis efficiency of crops, improve various physiological activities of crops, and enhance the resistance of plants to drought, cold, salt and alkali. It can be used for seed dressing to promote seed rooting and germination, improve seed germination rate, and form strong seedlings. It can be used for grain crops such as wheat to promote ear differentiation, make the ear grains full and round, increase the weight and number of ear grains, and increase crop yields. It can be used for fruit trees to promote the expansion of crop fruits, increase the formation and accumulation of fruit nutrients and sugars, and improve crop quality.
(2) Promote the expansion of underground rhizomes. After being absorbed by the stems, leaves and roots of crops, choline chloride can activate key enzymes of plant photosynthesis, improve the efficiency of plant absorption and utilization of light energy, increase the content of plant carbohydrates, proteins and chlorophyll, promote photosynthesis, inhibit crop respiration, reduce nutrient consumption, and transport as many photosynthetic products as possible to underground tubers, rhizomes and other storage organs, thereby promoting the expansion of underground rhizomes and rhizomes, improving crop yield and quality, and has a very obvious effect on the expansion of root crops.
(3) It has a certain growth control effect. Choline chloride and chlormequat are homologues, which can inhibit the synthesis of gibberellins and play a certain role in controlling vigorous growth, shortening the internodes of crops, making plants short and strong, increasing the ability of crops to resist lodging, and reducing excessive consumption of crop nutrients. However, the growth control effect of choline chloride is not significant. If the crops grow vigorously, it should be used in conjunction with other growth control products.
3. Applicable crops
Choline chloride is currently mainly used as a bulking agent for underground rhizomes such as sweet potatoes, potatoes, ginger, garlic, peanuts, yam, radish, ginseng, etc. It is also used in crops such as wheat and rice to promote panicle differentiation and filling, and in fruit trees such as apples, citrus, pears, Jufeng grapes, and strawberries to promote fruit enlargement, early coloring, and increase sweetness, thereby improving fruit quality.
4. Usage
(1) Enlargement of underground root tubers. In the early flowering stage of potatoes and peanuts, the 7-9 leaf stage of radishes, the three-strand stage of ginger, and the early enlargement stage of yam, garlic, onions, Chinese medicinal materials, sweet potatoes, etc., use 10-20 ml of 60% choline chloride aqueous solution per mu, add 30 kg of water, and spray evenly on the leaves of crops. Spray once every 10-15 days, and apply 2-3 times continuously, which can significantly increase crop yield.
(2) Improve fruit quality. 15 to 60 days before harvesting apples, pears, citrus, etc., spraying 200 to 500 mg/L choline chloride solution on the leaves can promote fruit enlargement and increase sugar content; 30 days before harvesting Kyoho grapes, spraying 1000 mg/L choline chloride solution on the leaves can make the grapes color earlier and increase sweetness.
(3) Seed soaking. Rice seeds soaked in 1000 mg/L solution can promote rooting and strong seedlings; cabbage and kale seeds soaked in 50 to 100 mg/L solution for 12 to 24 hours, dried and sown, can increase the plant's nutrient content and promote emergence and strong seedlings.
(4) Control growth. Spraying soybeans and corn with 1000 to 1500 mg/L solution on the leaves during the flowering stage, 2 to 3 leaf stage and 11 leaf stage can dwarf the plants and increase yield.
Precautions
(1) Choline chloride is the same as other regulators. It can regulate crop growth but cannot provide crop nutrition. Therefore, when using choline chloride, it is necessary to manage crop water and fertilizer. Especially in the late stage of crop growth, it should be used in combination with high-phosphorus and high-potassium fertilizers (such as potassium dihydrogen phosphate) to better play its role. It is not suitable for weak plants.
(2) Choline chloride can also be used in combination with regulators such as naphthylacetic acid, brassinolide, and chitosan. It can be mixed with weak acid and neutral pesticides, but should not be mixed with alkaline substances. It should be prepared and used immediately. The prepared solution should not be left overnight.
(3) When choline chloride is used for foliar spraying, both sides of the leaves should be sprayed. The spraying should be as even as possible. Avoid spraying under high temperature and scorching sun. If it rains within 6 hours after spraying, the spraying should be halved.
