How to choose and apply pesticides correctly

Before buying pesticides, it is necessary to determine the types of pests and diseases to be prevented and treated, and then choose pesticide varieties. When buying drugs, you should carefully identify the labels and descriptions of pesticides. All qualified commercial pesticides are marked with pesticide name, active ingredient content, registered trademark, batch number, production date and shelf life, and have three certificate numbers-pesticide registration certificate number, approval certificate number and product standard number, with product specifications and certificates attached. Don't buy pesticides with incomplete three certificates. In addition, we should carefully check the pesticide packaging, and do not buy pesticides with unclear labels and instructions or without formal labels.

If the powder, wettable powder and soluble powder agglomerate; Water turbidity; Emulsifiable concentrate is opaque; If there is too much powder in the particles, etc. The above pesticides are ineffective or inferior pesticides. Don't buy them. In addition, when buying pesticides, you should pay attention to a variety of pesticides or pesticides, and don't buy the wrong ones, especially pesticides. Such as Chen Gong, Sijihong, Easy Cleaning, Aphids, Imidacloprid, etc. Both are 10% imidacloprid wettable powder, belonging to more than one drug; The pesticide of the same name, Daochongjing, is a mixture of insecticidal Dan and Bt, a mixture of pyrethroid pesticides and organophosphorus pesticides, and a mixture of several organophosphorus pesticides. Although the names of the medicines are the same, their effective components are completely different.

Matters needing attention when farmers apply pesticides:

First, it is necessary to prescribe the right medicine and use it in a timely manner. First of all, it is necessary to accurately identify the types of pests and diseases, determine the key control targets, and select the appropriate pesticide varieties and dosage forms according to the occurrence period and degree. To prevent and control diseases, spray protective agents before the disease occurs, and spray therapeutic agents after the disease occurs. To prevent and control diseases, we should master the principle of protection first and then treatment, seize the best application opportunity, and use drugs for many times in a row, and achieve good results.

The second is rational drug use. In the case of ensuring the control effect, do not blindly increase the dosage, concentration and application times. Excessive application is easy to cause phytotoxicity. We should try to use low-concentration drugs within the effective concentration range, and determine the control times according to the residual period of drugs and the occurrence degree of pests and diseases.

The third is to pay attention to the application method. Different pesticide formulations should be used in different ways. Generally, emulsifiable concentrate and wettable powder are mainly used for spraying and watering; Mainly powder spraying; Granules are mainly applied by spraying or deep application of base fertilizer; Drugs with strong internal absorption can be sprayed, sprayed, filled and coated. Pesticides with different action mechanisms should also adopt different application methods in order to achieve the highest control effect. According to the disease site, pest activity law and different pesticide formulations, different application methods and time are selected.