With the change of weather, the temperature gradually decreases, and many fruits, vegetables, and fruit trees in greenhouses are facing a problem of poor fruit setting and slow fruit expansion. In fact, in agricultural production, not only due to weather factors such as temperature and light, but also due to many factors such as variety, soil, water and fertilizer management, a large number of flowers and fruits of melons and fruits and fruit trees often fall, resulting in low fruit setting rate and affecting yield. Improving the fruit setting rate, promoting the development of fruits, and improving yield and quality are the most important management measures to achieve increased production and income in agricultural production.
In solving these difficult problems, regulators play a very important role. The scientific and rational use of plant growth regulators is the best way to improve the fruit setting rate, promote fruit expansion, and achieve quick results.
Today I will share with you a plant growth regulator formula - Gibberellic acid forchlorfenuron, which is a fruit enlargement formula that is widely used in production, highly safe and effective.
1. Let's first get to know Gibberellic acid forchlorfenuron
Gibberellic acid forchlorfenuron is a mixture of two plant growth regulators, gibberellin and forchlorfenuron, and has the characteristics of both active ingredients.
Gibberellic acid is a plant endogenous hormone that can promote the synthesis of DNA and RNA, increase the activity of DNA templates, increase the activity of DNA and RNA polymerases and chromosomal acidic proteins, induce the synthesis of a series of enzymes such as a-amylase and lipase, increase or activate the activity of β-amylase, invertase, isocitrate decomposition enzyme, phenylalanine deaminase, inhibit peroxidase and indoleacetic acid oxidase, increase the content of free auxin, delay chloroplast decomposition, improve cell membrane permeability, promote cell growth and elongation, and accelerate the flow of assimilates and storage materials. It is widely used in agricultural production.
Growth inhibitors such as paclobutrazol and chlormequat can inhibit the biosynthesis of gibberellic acid in plants, and gibberellic acid is also an effective antagonist of these regulators.
Forchlorfenuron, also known as forchlorfenuron, pyridoxalol, pyridoxal, KT30, etc., commonly known as sitting melon, swelling fruit, etc., is a broad-spectrum, multi-purpose plant growth regulator.
After spraying, forchlorfenuron can be absorbed by the roots, stems, leaves, flowers, and fruits of plants, and then transported to the active parts, which can promote cell division, differentiation and expansion, increase the number of cells, and increase the size of fruits; promote tissue differentiation and development; break the dormancy of lateral buds and promote germination; delay aging and regulate the distribution of nutrients; improve pollen fertility, induce parthenocarpy in some fruit trees, promote fruit setting, and improve fruit quality. Forchlorfenuron is currently the most active synthetic agonist in promoting cell division, and its biological activity is about 10 times that of benzylaminopurine.
The combination of gibberellic acid and forchlorfenuron has obvious synergistic effect and more comprehensive functions, which makes up for the shortcomings of each single agent and is one of the best fruit enlargement agents at present. It is widely used in agriculture, horticulture and fruit trees in promoting cell division, promoting rapid fruit enlargement, increasing yield, and preserving products.
2. Gibberellic acid·forchlorfenuron application technology
Apply to cucumbers to regulate growth. One day before or after the flowering of the female flowers of cucumbers or on the day of flowering, 0.3% gibberellic acid·forchlorfenuron soluble solution can be used, diluted 125-250 times, and evenly sprayed on the melons once. Use it on cucumbers according to the recommended concentration. Generally, it is applied once during the growing season. It can increase the fruit setting rate, promote rapid fruit enlargement, prevent and control the occurrence of cracked and deformed melons, increase sugar content, and increase yield.
Apply growth regulation on grapes. 10-15 days after flowering, use 100-200 times of 0.3% Gibberellic acid·forchlorfenuron soluble concentrate to soak the fruit clusters once. This can prevent the falling of flowers and fruits, promote the rapid expansion of fruit grains, form seedless fruits, and increase yields. Prepare and use immediately. Use clean cold water for dilution instead of hot water. The best time of use and the amount of water to be diluted are affected by the characteristics of the variety, temperature, and cultivation management level, and should be adjusted according to actual conditions.
Apply growth regulation on mangoes. At the end of the flowering period of mango trees, 0.5% Gibberellic acid·forchlorfenuron soluble concentrate can be used. Dilute 1000-1500 times and spray the leaves for the first time. Apply the second time after an interval of about 10 days. When spraying the leaves, focus on spraying the fruit clusters. Spray the entire fruit cluster until it is moist without dripping. Apply the medicine to mango trees up to 2 times in a growing season.
3. What should I pay attention to when using Gibberellic acid·forchlorfenuron?
Gibberellic acid forchlorfenuron has a wide range of uses. Before using it for the first time, remember to test it first and then promote it after it is safe.
Gibberellic acid forchlorfenuron is only suitable for strong plants. It is strictly forbidden to use it on plants that are poorly managed and not strong. It is necessary to strengthen field management and pest and disease prevention to maintain fertilizer and water balance and strong plants.
Gibberellic acid forchlorfenuron should not be mixed with alkaline pesticides or fertilizers. Gibberellic acid is prone to neutralization reaction and ineffective when it encounters alkali. However, it can be mixed with acidic and neutral fertilizers and pesticides, and the yield increase effect is better when mixed with urea. The aqueous solution is easy to decompose and should not be stored for a long time. It should be prepared and used immediately. It can also be mixed with fertilizers such as calcium persulfate and ammonium sulfate.
When using Gibberellic acid forchlorfenuron, you must pay attention to the weather conditions. It is best to use it in windless and rainless weather. Rain within 6 hours after use will affect the efficacy of the medicine.
The best time to use Gibberella·forchlorfenuron and the amount of water added are affected by the characteristics of the variety, temperature, and cultivation management level. They should be adjusted as appropriate or used reasonably under the correct guidance of technical teachers. In case of abnormal climate or abnormal plant growth, technical consultation should be carried out in time before using this product or taking emergency measures.
When using Gibberella·forchlorfenuron, pay attention to the protection of beneficial organisms. It is prohibited to use it near aquaculture areas, rivers and ponds, and in areas where natural enemies such as trichogrammatids are released; it is prohibited to wash the application equipment in rivers and ponds, and the waste water from washing equipment cannot be discharged into rivers, ponds and other water sources. The discarded packaging must be properly handled and cannot be used for other purposes.
