2023-01-17

23. What is the effect of ethephon on increasing rubber production?Hevea brasiliensis is a tall tree with economic life of several decades. Milk is harvested from bark in a special way. Rubber is produced by the laticiferous tissue of the bark of the gum tree. The laticiferous cells use the products of photosynthesis - sugar and other nutrients, through a series of complex enzymatic reactions, to carry out biosynthesis to produce rubber.The rubber discharge of rubber trees is caused by artificial rubber extraction or natural disasters (such as cold damage, explosion, wind damage and mechanical damage). Under normal circumstances, the influence surface of artificial rubber collection and discharge is limited to a certain extent. The influence surface of rubber discharge is mainly below and on both sides of the cutting line when the rubber is cut by the male knife. The influence surface of rubber discharge is mainly above and on both sides of the cutting line when the rubber is cut by the female knife. The length of the influence is generally 1.25~1.75 meters, and the width of both sides of the influence cutting line is equal to one-ninth of the length. When ethephon is used in rubber trees, it will cause artificial induced callus reaction, which is a method to tap the existing rubber production potential. Its main functions are: (1) to mobilize reserves by a large margin; (2) Strengthen the absorption of water and nutrients and transport them to the milk tube system; (3) Enlarge the rubber discharge surface, block the coagulation mechanism, strengthen the rubber discharge of the latex tube, and make the regeneration function of the latex hyperfunction, resulting in a short-term and substantial increase in production. However, ethephon itself is not a nutrient, nor can it directly improve the ability of photosynthesis to increase new sugar. A large number of experiments have proved that the correct application of ethephon on rubber trees is an effective measure to improve rubber yield.24. Which rubber trees are suitable to use ethephon?Like other long-term crops, rubber trees have their seedling stage, yield stage, full yield stage and aging stage. In the seedling stage, it is mainly to promote the growth of rubber trees, and at this time, it can not be stimulated with ethephon; In the initial stage of production, the gum trees need to produce and grow, at this time, it is generally not suitable to stimulate the tapping; Generally, when the rubber trees enter the full production period (generally 15 years after the rubber trees are planted, that is, 5~7 years after the cutting), they can be stimulated to cut; When the rubber tree is aged and renewed, the stimulation intensity should be increased to tap the rubber production potential of the rubber tree.According to the test in China, it is temporarily stipulated that ethephon tapping is suitable for low-yield seedlings (including low-yield budding trees) over 15 years old and regeneration rubber plantations. As for the high-yield rubber budding trees, they are currently in the experimental stage and cannot be used in large-scale production.25. How to properly use ethephon to stimulate cutting?(1) The use scope of ethephon must be strictly controlled: at present, the use of ethephon is only limited to seedling trees (including low-yield budding trees) over 15 years old and the strong cutting of rubber trees before renewal; Except for the experiment, the high-yield budding trees are not suitable for productive use.(2) The dosage must be strictly controlled: according to the content of ethephon stock solution calibrated in each batch, and then dispensing and coating should be carried out according to the regulations. It is not allowed to arbitrarily increase the dosage and coating times.(3) Reasonable cutter reduction: generally controlled to reduce the number of rubber cutters by about one third compared with conventional rubber cutting.(4) Proper shallow cutting: 2/3~1/2 of the yellow skin (about 0.15 cm from the xylem) is usually cut off by conventional rubber cutting; However, the cutting depth of ethrel stimulation was controlled at 1/2~1/3 of the yellow skin (about 0.16~0.20 cm from the xylem).(5) According to the results of nutrition diagnosis, fertilizer should be added to supplement nutrients.(6) Master the dynamic analysis of rubber production and conduct scientific rubber cutting;I. Look at the phenology. The first canopy leaves should be straight and dark green before cutting. In winter, when the leaves turn yellow, cutting should be stopped.2. Cut the glue according to the weather. Do not cut the glue in rainy days; Do not cut glue when the temperature is lower than 15 ℃ in winter; Do not cut glue when the tree is not dry; Do not cut glue when the ulcer disease is prevalent.3. When the dry content is less than 28% in the first half of the year and less than 25% in the second half of the year, the cutting shall be suspended temporarily; When there is a sign of dead skin, the cutting should be stopped.(7) In addition to regeneration and strong cutting, the increase in yield should be controlled within the reasonable balance between gum production and gum discharge.(8) In order to improve the effect of stimulating production and reduce the occurrence of side effects, try to use the method of alternating cutting face and high and low cutting line to stimulate rubber cutting.26. What are the methods of using ethephon in rubber trees?Depending on the carrier (dosage form), there are currently three main methods:(1) Emulsion: hang the skin under the secant (male knife) or above the secant (female knife). The width depends on the number of knives. Generally, the skin is scraped along the secant for 1.2~1.5 cm, and the rough skin is scraped off. Then evenly apply the prepared ethephon emulsifiable concentrate on the scraping belt with a brush.(2) Water or paste: instead of scraping, after the glue line is removed, apply the prepared ethephon water (or paste) evenly along the secant on the bark of two centimeters wide on the secant with a brush.(3) Colloid: The use is the same as emulsion. It can be used after purchase without having to prepare itself, but its concentration is only one specification.After 48 hours of application, vinyl has completely entered the gum tree and can be cut.In case of heavy rain or rainstorm within 5 hours after the application of the medicine, because ethephon did not enter the gum tree, it should be repainted. In case of heavy rain after 5 hours, it should not be repainted.27. What dosage forms should be used for the use of ethephon in rubber trees?The selection of dosage form should consider the source of materials, the exertion of efficacy, the effect of increasing production, the cost and the safety of rubber trees. Generally, carriers with wide source of materials, low price, strong adhesion and small side effects are required. In recent years, 40% of ethephon produced by the factory is water and alcohol, and 5~10% is colloid; Generally, pastes and emulsions are prepared on the farm.Water agent: It is made by mixing ethephon stock solution directly with water as required.Colloid: In recent years, Shanghai Pengpu Chemical Plant has successfully developed 5~10% colloidal ethephon based on the materials used in foreign rubber parks, which has strong adhesion, is not easy to be washed away by rain, and is convenient to use. It has been tested in the affiliated farm of South China Tropical Crop Research Institute.Paste: add 0.5 kg of starch in 50 kg of water, stir it evenly, boil it to paste, cool it to normal temperature, add ethephon stock solution and stir it evenly to form paste.Emulsion: use palm oil to rosin 1:1.50, or gum seed oil to rosin 1:2 as the carrier, first boil and melt the oil and rosin, cool to normal temperature, and then add ethephon stock solution and stir evenly to form the emulsion.The emulsion is relatively thick, with strong adhesion, long efficacy time and good yield increase effect, but it has serious side effects, high cost and difficult source. The water agent is not so viscous, has poor adhesion, short efficacy time, and has poor yield increase effect, but has light side effects, low cost, and convenient source. Paste is between emulsion and water. The colloid has strong adhesion and can be purchased out of the box. It does not need to be prepared by itself, so it is convenient to use, but the cost is high.28. How to calculate the amount of ethephon used by rubber trees?The application amount of ethrel stimulation for rubber trees is mainly determined by the dosage form, tree age, length of secant and length of cycle.Generally, emulsion is applied once a month, while water and paste are applied twice a month; The dosage of chemicals for young trees should be less, and that for mature trees should be more, and the number of regeneration and strong cutting trees should be increased gradually. In principle, the dosage of emulsion for each young tree should be 0.1 g of ethephon stock solution (effective concentration 2%), and the dosage of water or paste for each tree should be 0.05 g of ethephon stock solution (effective concentration 1%); The dosage of mature tree emulsion is 0.2g of ethephon stock solution (effective concentration 4%) of 40% per plant; 0.1 g of 40% ethephon stock solution (effective concentration 2%) is used for each water or paste; Use 0.4-0.5g of 40% ethephon stock solution (i.e. effective concentration 8-10%) for each time of renewal and strong tree cutting emulsion, and 0.25g of 40% ethephon stock solution (i.e. effective concentration 5%) for each time of water or paste.calculation:(1) Concentration preparation method:Required quantity of technical drug=(weight to be dispensed × Use concentration%) ÷ (technical concentration%)Carrier weight=required weight - technical requirement(2) Dose allocation method:Technical drug demand=drug consumption per plant × Number of plantsCarrier weight=number of plants × Required capacity per plant29. How to conduct ethephon stimulation tapping for abnormal rubber trees?The rubber trees were attacked by typhoons and cold waves, the branches, leaves and trunks were damaged to varying degrees, and the stored organic nutrients were also consumed to varying degrees. Therefore, it is not allowed to apply medicine and cut glue according to the method of normal rubber tree. No ethephon shall be used for wind and cold damage trees of grade 3-5 in the year of injury; The trees with Grade 3 wind and cold damage that reach the normal tapping standard in the second year of injury can be sprayed with medicine to stimulate tapping; Grade 4~5 wind and damaged trees can only be used with ethephon if they meet the re-cutting standard, but the number of times and concentration of application should be reduced. In the period of no application, the knife should be reduced, which is 1/3~1/2 of the normal tree.There are also some dead bark trees and canker trees. Their gum production mechanism (milk tube system and bark) has been damaged, and local nutrition deficiency has occurred. These trees should not use ethephon during the disease expansion period; After the second year of ulcer disease, when the focus has stabilized, the dead skin disease tree can use ethephon appropriately after the stabilizer, but the number of times of applying medicine and the number of glue cutting knives should be appropriately reduced, or the method of cutting and stopping should be adopted.30. Why should the rubber trees be fertilized with ethephon? How should they be added?Rubber synthesis requires a lot of nutrients. Fertilizer is the food intake of rubber trees. Under normal circumstances, regular rubber cutting requires a certain amount of nutrients every year. After the use of ethephon, the amount of glue discharged from the rubber tree will be multiplied, and the need for nutrient supplement will be increased. According to the measurement, the gum tree loses 8 grams of nitrogen, 2 grams of phosphorus, 7 grams of potassium and 3 grams of magnesium for each kilogram of dry gum added; Therefore, it is necessary to apply more fertilizer to rubber trees to stimulate ethephon, so as to ensure the nutrient requirements of rubber trees. It has been measured that when ethephon stimulates the increase of dry rubber yield by 10-15%, the nutrient consumption discharged with latex increases by 20-30%. If no fertilizer is applied, it will not only affect the yield increase effect, but also reduce the nutrient content of leaves, inhibit the growth of rubber trees, affect the normal metabolic activities of rubber trees, and reduce the ability of rubber production. Therefore, the application of ethephon-stimulated rubber trees requires a large amount of organic fertilizer. Organic fertilizer not only contains nitrogen, phosphorus and potassium, but also can improve soil structure and promote root growth. Its effect is better than chemical fertilizer. Generally, 100 kg of organic fertilizer should be applied to each plant every year, and 0.5~1 kg of ammonium sulfate and 0.25~0.5 kg of superphosphate should be applied when conditions permit. Organic fertilizer and phosphorus fertilizer shall be applied from the end of cutting in winter to the beginning of cutting in the next year, and 60% of nitrogen fertilizer and potassium fertilizer shall be applied from the beginning of cutting to the first application of ethephon to promote the growth of the first canopy leaf and produce more nutrients. The remaining nitrogen fertilizer can be applied 10 to 15 days before the high-yield season. Water and fertilizer should be applied in dry season.31. Why should rubber trees be shallowly cut when using ethephon?The bark of rubber tree is usually divided into outer bark, hard bark, soft bark, water sac skin and cambium from outside to inside. The soft bark layer is composed of parenchyma cells, sieve tubes and milk tubes, with few stone cells, soft skin and light yellow color, so it is also called yellow bark layer, which is the main cortex for latex production.Conventional tapping usually requires deep tapping to obtain yield. After using ethephon, shallow tapping can obtain much more yield than conventional tapping. Due to the large increase in the amount of glue after application, the regeneration of latex needs to supplement a large amount of water and nutrients. Their transportation in the rubber tree is mainly through the sieve tubes of the ducts, and the sieve tubes with functional functions are in the water sac bark of the bark. Deep cutting not only causes a large loss of nutrients, but also partially cuts off the transportation. The sugar and nutrients mobilized by ethylene cannot be transported into the latex tube in time, which weakens the rubber production function of the latex tube. Experience has proved that deep cutting after coating will cause dry skin on the cutting surface, shrink the rubber discharge line, and even dry the cutting line. Therefore, in order to protect the health of rubber trees and long-term high and stable yield, rubber trees must be shallowly cut after using ethephon.32. Why can rubber trees save gum bark by using ethephon?The latex tube is contained in the bark, and the bark of the rubber tree is an important basis for the production of rubber. In a sense, the bark is the workshop for manufacturing latex, and the latex tube is the machine for manufacturing latex. Saving the bark is to preserve the plants and machines that produce rubber, and wasting the bark is to destroy the plants and machines that produce rubber.For conventional tapping, the cutting time is 15 knives per month, the bark consumption is 2~2.5 cm, and the bark consumption is about 20 cm per year; After using ethylene, rubber trees generally cut rubber by 9 to 10 knives per month, consuming 1.5 cm of bark, and only 13 to 15 cm of bark per year. It can be seen that the use of ethephon in rubber trees can significantly save the production of rubber bark and prolong the economic life of rubber trees due to the reduction of rubber cutting trees.33. Why can rubber trees use ethephon to save rubber cutting labor?Under conventional rubber cutting, the rubber latex regeneration generally takes 24 hours to complete, so the s/2 and d/2 cutting systems are usually adopted (that is, the secant of one-half of the tree circumference is cut once a day). The use of ethephon in rubber trees has expanded the influence area of rubber drainage, and the amount of rubber drainage has increased significantly. However, the regeneration of rubber latex needs to supplement a lot of water and nutrients, so it takes 48 hours to complete the regeneration of rubber latex. Therefore, the s/2 and d/3 cutting systems are usually used (that is, the cutting line of one-half of the tree circumference is cut every three days).The use of ethephon for rubber trees generally reduces the cutting times by one third, so it can save a lot of rubber cutting labor. People can also use the saved rubber cutting labor to strengthen the management of rubber trees, so as to improve the rubber production potential of rubber trees and better improve the rubber production of rubber trees.34. How about the economic benefits of using ethephon correctly to stimulate tapping?The effect of ethephon on increasing yield of rubber trees is satisfactory. According to the statistics of the 12-year (1972-1983) experiment of 28.70 mu rubber seedlings in the fifth team of the South China Tropical Crop Research Institute, the average annual tapping of trees stimulated by ethephon was 76.80, and the average annual tapping of trees stimulated by ethephon was 106.50, and the average annual tapping of trees stimulated by ethephon was 29.70 times less than that of the control, with a reduction of 28%; The average annual yield of dry gum per mu of the stimulation tree is 54.50 kg, and the dry gum per plant is 3.73 kg, while the average yield of dry gum per mu of the control tree is 31.30 kg, and the dry gum per plant is 2.35 kg, which is 54.50% higher than that of the control tree; After deducting costs such as ethephony, the net income of each mu of rubber park can be increased by 70 yuan per year.In addition, according to the statistics of 23000 mu of state-owned Nanmao Farm, 480000 rubber seedling trees have been used in a large area for eight years (1975-1982) to stimulate the tapping of ethephon, the average annual tapping of ethephon trees is 98, 142.30, 45% less than that of the control trees; The average annual yield of dry rubber per mu of pesticide application is 48.90 kg, and the average annual yield of dry rubber per mu of control tree is 32.70 kg, with an average increase of 24.40%; In the eight years, a total of 1957.66 tons of dry rubber have been increased. In addition to processing costs, a total of 1096300 yuan of income has been increased by 5600 yuan per ton of dry rubber. After deducting 109000 yuan of ethephony cost, the net profit was 10.854 million yuan, with an average annual net profit of 1.35 million yuan and an annual increase of 58.70 yuan per mu of rubber.At present, the low-yield rubber plantation trees in the national agricultural reclamation system generally use ethephon to stimulate tapping, which generally increases the yield by more than 15%. In the future, if the high-yield rubber budding trees can use ethephon to stimulate tapping, the economic benefits will be higher.

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2023-01-17

Alistar India recently announced the launch of plant growth regulator PILATUS ®。 This product is produced by Alista Mexico, which contains plant extract, fulvic acid, zinc, amino acid and inositol, which can stimulate seed germination and root development."Field trials have proved that PILATUS is a very effective product, which can help farmers increase production and improve product quality." Rajat Thakur, vice president of marketing of Aristar India, said, "PILATUS will initially be promoted on vegetables (tubers and bulbs) and grape crops, and then expand to other cash crops. Aristar believes that this product provides farmers and local distribution channels with opportunities to create value."The advantages of PILATUS products include: enhancing root growth; Enhance the absorption of nutrients; Improve crop growth; Improve the tillering, branching, flowering and bearing of crops; Improve production and quality.Alistar plans to promote PILATUS products across India in the coming planting season.

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2023-01-17

[Introduction · China Pesticide and Fertilizer Network] The fertilizer utilization rate is the main indicator to measure the fertilization effect. In order to comprehensively, accurately and objectively reflect the fertilizer utilization in China's agricultural production, the Ministry of Agriculture organized experts to complete the "Research Report on the Fertilizer Utilization Rate of China's Three Major Grain Crops" and released the relevant research results recently.The fertilizer utilization rate is the main indicator to measure the fertilization effect. In order to comprehensively, accurately and objectively reflect the fertilizer utilization in China's agricultural production, the Ministry of Agriculture organized experts to complete the Research Report on the Fertilizer Utilization Rate of China's Three Major Grain Crops and released the relevant research results recently.The Report shows that at present, the average utilization rates of nitrogen, phosphorus and potassium fertilizers for rice, corn and wheat in China are 33%, 24% and 42% respectively. Among them, the utilization rates of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer for wheat were 32%, 19% and 44%, respectively, while the utilization rates of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer for rice were 35%, 25% and 41%, respectively, and the utilization rates of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer for corn were 32%, 25% and 43%, respectively. At present, the fertilizer utilization rate of China's main food crops has entered the internationally recognized appropriate range, but it is still at a low level, and there is still a large room for improvement.Professor Zhang Fushuo of China Agricultural University, the main drafter of the Report, said that in recent years, the issue of fertilizer utilization rate has attracted increasing attention, but due to the lack of relevant information, there has been no scientific research data on fertilizer utilization rate. In order to accurately calculate the fertilizer utilization rate, researchers have carried out a lot of work in data selection, data collation, calculation methods, validation tests, etc. Using the data of soil analysis, field test, field survey and other data obtained in 9 years of soil testing and formula fertilization, as well as the fertilizer utilization rate validation test data carried out by the National Agricultural Technology Extension Service Center, they have consulted a large number of domestic and foreign literature and conducted tens of thousands of farmer surveys, The data of fertilizer utilization rate basically reflects the actual situation of fertilizer use of major grain crops in China.Professor Zhang Fushuo said that at present, there are misunderstandings about the fertilizer utilization rate. The fertilizer utilization rate is not only a simple number, but also varies greatly among different crops and fertilizer varieties. There are also differences in the fertilizer utilization rate and cumulative utilization rate in the current season. At present, the widely circulated statement that "China's fertilizer utilization rate is about 30%, and 70% is wasted" is not scientific. Professor Zhang Fushuo said that some of the nutrients that were not absorbed and utilized by the crops in the current season after fertilizer application would be stored in the soil for absorption and utilization by the crops in the next season, and some would leave the farmland and enter the atmosphere and water body. Only this part is called fertilizer loss. At present, fertilizer loss is mainly concentrated on nitrogen fertilizer. Most of the nutrients of phosphorus and potassium fertilizer would accumulate in the soil, and the cumulative utilization rate could reach more than 60%.Li Rong, a participant in the Report and director of the Soil and Fertilizer Technology Division of the National Agricultural Technology Extension Service Center, introduced that the "fertilizer utilization rate" that everyone cares about mainly refers to the nitrogen fertilizer utilization rate of grain crops in the current season. The fertilizer utilization rate of China's main grain crops has experienced a process of "first falling, then rising". Since the 1990s, with the continuous increase of fertilizer input, fertilizer utilization rate has declined. Taking nitrogen fertilizer as an example, the utilization rate dropped from 30-35% in the mid-1990s to 28% at the beginning of this century (2005). In recent years, through the implementation of soil testing formula fertilization, soil organic matter improvement and other projects, we have vigorously promoted scientific fertilization technologies such as deep tillage and deep loosening, deep fertilizer application, straw returning to the field, and integration of water and fertilizer, which has promoted the steady recovery of fertilizer utilization. Especially since the implementation of the subsidy project of soil testing and formula fertilization in 2005, it has promoted the transformation from traditional fertilization to scientific fertilization and curbed the trend of excessive increase in fertilizer use. According to the report, the nitrogen fertilizer utilization rate of the three major grain crops in the current season is 33%, which is 5 percentage points higher than that before the implementation of the soil testing formula fertilization subsidy project (2005). The utilization rate of phosphate fertilizer and potassium fertilizer in the current season increased by 12 and 10 percentage points respectively compared with 2005.The relevant person in charge of the Department of Crop Management of the Ministry of Agriculture said that China is the largest country in the production and consumption of fertilizer in the world. Improving fertilizer utilization rate is an inevitable requirement for changing agricultural production mode and improving agricultural comprehensive production capacity. In the next step, agricultural departments at all levels will further promote scientific fertilization from five aspects, reduce unreasonable fertilizer input and continuously improve fertilizer utilization rate: first, promote the application of formula fertilizer to the field. We will continue to implement the subsidy project of soil testing and formula fertilization, carry out the action of agro-enterprise cooperation to promote formula fertilizer, increase the application area of formula fertilizer, and solve the problem of "the last kilometer" of scientific fertilization technology. The second is to promote the transformation of fertilization methods. Encourage the application of organic fertilizer and straw returning to the field, vigorously promote scientific fertilization methods such as deep application of chemical fertilizer, integration of water and fertilizer, and simultaneous seeding of seed and fertilizer, and develop new varieties that can save fertilizer, increase efficiency, increase production and increase income. Third, strengthen the promotion of technology integration. Strengthen the comprehensive management of nutrient resources, assemble and match the crop cultivation measures and fertilization measures according to the requirements of high yield, and promote the application in a large area. Fourth, strengthen publicity and training. We will carry out technical training and publicity in various forms, such as television, radio, clear paper, mobile phone text messages, so that farmers can effectively grasp scientific fertilization technology and establish scientific fertilization awareness.Source: China Pesticide and Fertilizer Network

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2023-01-17

Chemical control is an important technical measure in the current comprehensive control of tea plant diseases and insect pests. The correct and reasonable use of chemical pesticides is the key to effectively control tea plant diseases and insect pests, improve tea quality and increase tea garden economic benefits. Due to the stable nature, high residue, strong odor and other characteristics of some pesticides, and carcinogenic, teratogenic and mutagenic effects of some pesticides, their application in tea gardens will seriously affect the quality of tea and export trade, and will also pollute the environment and endanger human health. These pesticides are not suitable for use in tea gardens and are prohibited in tea gardens.In order to attract the attention of tea producers, the banned pesticides in tea gardens are summarized as follows according to relevant data:

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2023-01-17

Syngenta recently announced its plant growth regulator (PGR) PARLAY ® It has been registered in Canada to help its growers produce turf-type perennial ryegrass seeds.Wayne Bennett, director of business development at Syngenta, said, "PARLAY is an important product for perennial ryegrass seed production, which can improve seed production and the competitiveness of Canadian growers."Brett Young seed company became the distributor of PARLAY. The company is headquartered in Winnipeg, Canada, and has a long history of development in the forage and turf industry. Harley Bell, senior product manager of Brett Young, showed confidence in the product, "PARLAY can bring significant economic returns to the growers of turf-type perennial ryegrass seeds, and improve the output of this crop which is difficult to harvest."Perennial ryegrass is an early harvest crop. It has high tolerance to excessive humidity and can increase the organic matter in the soil. It is an important rotation crop. However, early lodging reduced the seed yield.Studies by the Manitoba Forage Seed Association of Canada and the United States have shown that the application of plant growth regulators containing antidepressant can reduce lodging and improve the yield of perennial ryegrass seeds. PARLAY uses this chemical ingredient to enhance the stem strength of crops, reduce the stem height, and make crops easy to bind and dry, so as to improve the harvest rate.Bell said that growers in the United States have used plant growth regulators for many years. He said, "The registration of PARLAY is a major development for Canadian growers. Access to this technology is crucial for improving production and competitiveness."

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2023-01-17

Recently, the European Commission announced that, in accordance with the EU plant protection regulations (1107/2009), it was approved to register the active ingredient of plant growth regulator of Chrysal (the former Dutch company Enhold). The active substance will be confirmed to be listed in Appendix 1 on May 1, 2014 and will expire on April 30, 2024. The application was submitted to the Netherlands by Chrysal in 2003.The European Commission asked Member States to pay special attention to the protection of operators and workers, limit the possible leakage of silver ions during waste solution treatment, and pay attention to the risks of using sludge in agricultural production to terrestrial vertebrates and soil invertebrates.

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2023-01-17

FineAmericas is a company that produces and markets plant growth regulators for fruit planting in the industry. Recently, the company announced its new plant growth regulator product Blush ® It is registered with the United States federal government. Blush ® Its active ingredient is propyl jasmonate (PDJ), which is used to improve the color of red apple.Greg Johnson, chairman of Fine America, said: "We are very happy with Blush ® Obtain government registration. According to the data we received from partners in several key apple planting states, Blush is used to improve the color of fruit ® The test group of has better performance than the fruit that uses general methods and does not use any products. " Johnson added that Blush ® It can be widely used in a variety of different varieties, including Honeycrisp apple, Gala apple, Fuji apple, Macintosh apple and other two-color apples, to improve the color of apple and make these popular varieties more competitive in the market.Propyl jasmonate is a synthetic jasmonate, which belongs to a new plant hormone group and has good physiological characteristics. In addition to fading the green of apple, propyl jasmonate can also make the color of apple more attractive by strengthening the aggregation of anthocyanins. Anthocyanin is a red pigment, belonging to flavonoids. In addition to stimulating apple coloring, anthocyanin is also a powerful antioxidant.Johnson concluded: "Blush ® It is another example of our company's commitment to providing help to American fruit growers. Blush ® And our existing products including Exilis ® Plus,Falgro ®, Novagib ® And Perlan ® Together with plant growth regulator products, it has given American apple growers a valuable tool to meet their consistent requirements for planting high-quality fruit. "

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2023-01-17

The Canadian Pest Administration (PMRA) recommended extending the registration of plant growth regulator paclobutrazol. The bureau reassessed the products containing paclobutrazol and believed that if used according to the label, it would not cause unpredictable risks to human health or the environment. As a condition for extending the registration, the bureau recommended updating the labels of all end products. No additional data is required at present. The public review period of this proposal ends on December 30, 2013.The plant growth regulator paclobutrazol is a triazole pesticide, which reduces the rate of cell division by inhibiting the biosynthesis of gibberellin and sterol. Paclobutrazol is registered in Canada for greenhouse potted landscape crops to obtain plants with more dense branches and leaves and enhance flowering. The application mode of paclobutrazol is mostly spraying or soaking with handheld devices.

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2023-01-17

Tata Chemical recently announced the launch of organic plant growth regulator FarmGro (foliar spraying) and FarmGroG (granules) products in India.FarmGro is a liquid product for foliage spraying and drip irrigation. It combines a variety of substances that promote plant growth, and absorbs and functions through plant leaves. The main components of the product are amino acids, organically chelated micronutrients and seaweed extracts.FarmGro is an excellent product of plant growth regulators, mainly for horticultural crops and other crops such as cotton and sugarcane.DK Sundar, the vice president of Tata Chemical in charge of crop nutrition and agricultural business, said that FarmGro is mainly provided to farmers and growers in Maharashtra, Gujarat, Madhya Pradesh and southern regions of India.At present, Tata Chemical has carried out farmer education projects and farm demonstrations in its key markets, explaining the main features and advantages of the products to customers by providing first-hand user experience.

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2023-01-17

Sinochem News reported that the US Environmental Protection Agency recently proposed to approve the plant growth regulator (PGR) product Blush of FineAgrochemicals. The active ingredient of Blush is propyl jasmonate (PDJ), which is used to improve the color of red apple.Propyl jasmonate is a synthetic plant growth regulator, which is similar in structure to jasmonic acid (JA), a natural plant regulator commonly found in vascular plants, with the same function and similar action mode, and low toxicity to the environment.The United States Environmental Protection Agency received Blush's registration application in December last year, and the public review period for this approval ended on October 3, 2013.

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