will the use of chlorpyrifos be completely banned? The industry is paying attention, speculating, worrying and even worrying!
Not long ago, the U.S. Environmental Protection Agency refused to sign the ban on the use of chlorpyrifos in the United States. After that, Australia reviewed chlorpyrifos again and made positive comments. It seems that these heavy information has given chlorpyrifos a chance to reverse his conviction and will be reborn.
The production capacity of the original drug is 1, tons, and it is widely used in many crops. Such an old product can not be ignored.
As an efficient, broad-spectrum and safe organophosphorus insecticide and acaricide, chlorpyrifos is one of the most widely used and cost-effective pesticide products in the international market, and plays an important role in the field of integrated pest management.
during the interview, we learned that at present, the technical production capacity of chlorpyrifos in China is about 1, tons. With the industrial upgrading and environmental protection improvement, the industrial concentration is gradually increasing. At present, Zhejiang Xinnong Co., Ltd., Jiangsu Fengshan, Red Sun, Hubei _ Star, Lianyungang Liben, etc. can provide stable production and supply in China.
According to incomplete statistics, the annual sales volume of chlorpyrifos preparations (including compound preparations) in China is 46, tons, the control area is about 65 million mu, and the sales amount reaches 1.3 billion yuan.
According to the pesticide information website of China, there are still 183 products of chlorpyrifos single dose and compound product, including 619 single dose and 462 compound preparation, and 282 field trials, involving more than 7 registered original drug manufacturers and 498 preparation manufacturers.
chlorpyrifos still has a good effect on rice, wheat, corn, cotton, citrus, apples, tea trees and other fruit trees and fields. Moreover, after methamidophos and methamidophos were banned, chlorpyrifos became the main role to replace them, and the prospect was still good.
controlling scale insects accounts for 7% to 8% of the market.
Methamidophos is a special control agent for scale insects. However, since it was banned in fruit trees in 215, there is a lack of good ingredients in controlling scale insects in fruit trees. The single buprofezin (which is recognized as having a good effect on scale insects) has a general effect on scale insects. At the same time, in the prevention and control of scale insects, in addition to several patented components of foreign companies, domestic enterprises generally use the compound products of chlorpyrifos.
At present, chlorpyrifos has become the most important product to replace chlorpheniramine in fruit-bearing areas, accounting for 7% to 8% of the market for scale control agents.
It is understood that scale insects occur all over China, and fruit trees such as citrus, litchi, mango, apple, pear and peach are the most common and difficult pests to control. Conventional chemicals are difficult to kill scale insects through the waxy layer, which will further expand the harm and lead to reduced production; Chlorpyrifos has a good effect on the control of scale insects because of its contact, fumigation and stomach toxicity.
Once banned, there are no new ingredients that can completely replace all the advantages of chlorpyrifos.
Fan Kuncheng, an associate researcher at Xinnong Co., told reporters that chlorpyrifos has no systemic effect, and its residue can be effectively controlled as long as the medication technology and safe interval are mastered. At the same time, chlorpyrifos is not leached, so it can effectively control underground pests as granules. The occurrence of pests is a relatively dynamic ecosystem, and there is competition and balance adjustment between pests in food and food chain, so the occurrence of pests often has a trend of changing, and single control of a certain pest may lead to another serious occurrence of major pests. Modern pesticide research pays more attention to the development of specific target objects. Its advantages are precise control and outstanding effect, but its disadvantages are narrow control spectrum and easy to produce drug resistance, which leads to the resurgence of secondary pests.
With the banning and delisting of pesticides such as chlorpyrifos, carbofuran and carbosulfan, the rapid development of pesticide resistance of amide pesticides and the prominent toxicity of nicotine pesticides to bees, there are great risks in the prevention and control of crop pests in China. For example, the control problem of scale insects after the ban of chlorpyrifos and the control problem of underground pests after the ban of carbofuran.
China is a large agricultural country with a population of 1.4 billion, and food security is the foundation of national stability and development. As Prut, Director of the US Environmental Protection Agency, said: "We need to re-examine the confirmation steps for banning the use of chlorpyrifos, the most widely used pesticide in the world. We must make decisions through sound scientific means, not through subjective decisions."
Based on the above, the market of chlorpyrifos cannot be completely replaced at present, and there are few broad-spectrum and efficient pesticide products that can replace chlorpyrifos at present. According to our investigation, there are many products such as spirodiclofen, buprofezin, thiamethoxam and fipronil in citrus. In vegetables, emamectin benzoate, Kung Fu, bifenthrin, abamectin and chlorantraniliprole are more. However, it should be noted that some of these substitutes are resistant in the application process, and they can only replace some functions of chlorpyrifos.
Therefore, the use of chlorpyrifos should not be banned at this stage, so as not to lead to the resurgence of secondary pests, the intensification of pest resistance and the increase of growers' costs.
chlorpyrifos has been used for many years, and it is relatively perfect in the guidance of safe medication. The toxicity, occupational health, safety, residue, trade, environment, efficiency and crop safety should be considered comprehensively, and decisions should be made by scientific means based on scientific facts, rather than subjective assumptions. The measures taken by EpAHE in the United States and ApVMA in Australia have protected chlorpyrifos, a high-efficiency broad-spectrum non-systemic pesticide, protected the interests of producers and growers, and increased the guarantee for global food safety production.
judging from the decision of EpA in the United States and ApVMA in Australia, and based on the characteristics of chlorpyrifos products, the occurrence trend of crop pests and the current situation of pesticide research and development, chlorpyrifos will not be completely banned in the short term. However, in terms of production, sales and use, China should strengthen environmental protection and clean production, actively and reasonably guide and use chlorpyrifos safely and scientifically, so that chlorpyrifos can play a greater and better role in IpM.
whether chlorpyrifos is banned depends on what people in the industry say.
dong jiajia, product manager of chlorpyrifos at Dow yinong
chlorpyrifos was banned on vegetables because of its long residual effect, which easily caused the residue to exceed the standard. But objectively speaking, any pesticide has a corresponding requirement for a safe harvest period. As long as it is used in strict accordance with the requirements of the label, this risk is limited. However, the government's decision to ban vegetables does have a realistic reason, that is, it is difficult for farmers to use them according to the label, and we fully support it.
At present, chlorpyrifos, as the most sold and widely used organophosphorus product, still has its irreplaceable advantages in terms of action mechanism, broad insecticidal spectrum, cost performance and so on. It has its unique features in the control of pests on the ground and underground. After decades of use, farmers are quite familiar with its characteristics and usage methods. Looking at the pesticide products on the market at present, there are no new ingredients that can completely replace all the advantages of chlorpyrifos. On this premise, if it is unrealistic and unscientific to ban chlorpyrifos completely, the focus should also be on management and education of farmers to use drugs scientifically.
Fan Kuncheng, associate researcher of Zhejiang Xinnong Co., Ltd.
After methamidophos and other highly toxic pesticides were banned, chlorpyrifos played a major role in replacing highly toxic pesticides. It had triple effects of stomach toxicity, contact killing and fumigation, and had good control effects on various pests on rice, wheat, corn, cotton, citrus, apples, vegetables, tea trees and other crops, which increased farmers' production and income and reduced farmers' income. In addition, chlorpyrifos is a broad-spectrum and efficient pesticide, which does not inhale or leach, and belongs to moderate toxicity. We can't talk about drug discoloration, let alone follow the trend. We should treat it rationally and objectively, actively guide and use chlorpyrifos scientifically and reasonably!
Yang Shaobin, product manager of chlorpyrifos promotion and application in Hailier Pharmaceutical Group
The ban of chlorpyrifos on vegetables triggered a chain reaction, and discussions in fruit tree areas and Datian areas made chlorpyrifos controversial, which gradually reduced the promotion of chlorpyrifos. In fact, in fruit-bearing areas, the prohibition of methidathion and single buprofezin have had a general effect on scale insects, and chlorpyrifos and its compound products at home and abroad still play an important role. At the same time, chlorpyrifos has a good effect on cotton aphids on fruit trees. In addition, some underground pests have not found suitable pesticides, and the effect of chlorpyrifos is still excellent. In a word, chlorpyrifos, as a cost-effective product, is still worth popularizing in pest control in field area, garden cleaning in fruit tree area, scale insect and cotton aphid control, and can not be completely replaced at this stage.
Zheng Chuanjie, product manager of chlorpyrifos in Yanhua Yongle
Chlorpyrifos is a 1,-ton product in China and plays an important role in the whole pesticide market. With the increase of peanut area, chlorpyrifos plays an obvious role in preventing and controlling underground pests in peanuts. The statement that "chlorpyrifos should be completely banned in 218" is a bit alarmist. Chlorpyrifos is an old product that has been used for a long time, and farmers have a strong recognition of it, so the sales volume has not been affected because of whether it is prohibited or not. Chlorpyrifos is moderately toxic and may be banned in the long run, but at present, there are few chemicals that can completely replace chlorpyrifos.
Li Hongchao, Marketing Director of Shaanxi Xiannong
In the past, chlorpyrifos occupied a very important position in the agricultural field, but now the emergence of more safe and environmentally friendly new pesticide varieties has made its position very embarrassing. In the future, the total ban of chlorpyrifos may not be possible, but I prefer to restrict the use of chlorpyrifos rather than ban it. The restriction of chlorpyrifos needs to be treated in different regions, and it should be banned in many vegetable provinces, some of which are not used in fields or fruit trees, depending on the differences in crop planting structure. After all, there is still much room for improvement in our market environment, and we must follow the crop planting structure and agricultural product development strategy in line with our country!