High risk of excessive pesticide residues
The overuse of pesticides means that the amount of pesticides used or the number of use exceeds the pesticide registration label requirements. The disadvantages of overuse of pesticides are many: on the one hand increasing the cost of medication; on the other hand, it is very easy to cause pesticide residues in agricultural products to exceed the standard or produce phytotoxicity; at the same time, it will also increase the resistance to diseases, insects, and weeds.
Excessive use of pesticides can easily cause excessive pesticide residues in agricultural products for four reasons: First, the use of different doses; Second, the use of different times; Third, the use of different time and season; Fourth, the safety of the same pesticide on different crops The period and residue limits are also different.
Then, how can farmers avoid overuse of pesticides in production? Attention must be paid to the following three aspects:
1. Buy qualified pesticide products from a good reputation and regular store. Avoid illegally adding “hidden pesticide components†and even highly toxic pesticides are used in the fields.
2. In strict accordance with the provisions of the label of the control object medication. For example, acetamiphos is only allowed for the pest control of rice and cotton and is not allowed to be used on other crops.
3. For commonly used pesticides, although they belong to the same pesticide name, they have different dosage forms and contents, and the objects to be controlled and the amount and frequency of use are also different. Must not be confused. Like imidacloprid pesticides, there are wettable powders and suspensions, but the usage is very different. Individual farmers used the CadillacTM (600 g/l imidacloprid suspension agent) registered on rice for use on cucumbers, resulting in excessive imidacloprid residues in the cucumber.
Enrofloxacin is a synthetic bacteriostatic agent of fluoroquinolones. It is easily soluble in organic solvents such as sodium hydroxide solution, methanol and Cyanomethane.
This product is a broad-spectrum bactericide with special effects on mycoplasma. It has bactericidal effect on Escherichia coli, Klebsiella, Salmonella, proteus, Pseudomonas aeruginosa, Haemophilus, Pasteurella multocida, Pasteurella haemolyticus, Staphylococcus aureus, Streptococcus, etc.
Enrofloxacin can be used as a drug for animals. It has a long half-life in animals and has good tissue distribution. It is a wide-ranging antibacterial agent. It has antibacterial effect on Gram-positive bacteria, negative bacteria and mycoplasma. It has been used in the control of Vibrio and colibacillosis diseases of cultured fish.
This product is a synthetic third-generation quinolone antibacterial drug, also known as ethyl ciprofloxacin. It was approved by FDA on October 4, 1996. It is a special quinolone antibacterial drug for livestock, poultry and aquatic products. It can combine with bacterial DNA gyrase subunit A, inhibit the cutting and connecting function of the enzyme, prevent the replication of bacterial DNA, and show antibacterial effect. It has broad-spectrum antibacterial activity and strong permeability. It has strong killing effect on Gram-negative bacteria and good antibacterial effect on Gram-positive bacteria. It has good oral absorption, high and stable blood drug concentration, and can be widely distributed in tissues. Its metabolite is ciprofloxacin, which still has strong antibacterial effect. It has strong antibacterial activity against almost all pathogenic bacteria of aquatic animals. It is effective for serious infection caused by drug-resistant pathogens, and has no cross resistance with other antibiotics.
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