Ineffective pesticides

In the process of agricultural production, if the expired or expired pesticides are purchased or misused, there is no control effect, and the crops may be damaged, resulting in reduced production or even no harvest. So how do you distinguish between failed pesticides? The pesticide network Xiaobian is introduced in detail for everyone:
1. Dry powders: If the pesticides are in a damp state, they can form a wet mass when held by hands, and they are semi-failed pesticides; if they form a soft block, they all fail. Normal dry powder pesticides should be free of moisture and agglomeration.
2. Wettable powder: Take a little pesticide and pour it into the container. Add a proper amount of water to make it into a paste. Then add a small amount of water and mix well. After standing, observe. In the case of an undeteriorated pesticide, the suspension property is good, the precipitation rate of the powder particles is slow, and the precipitate is particularly small. On the contrary, pesticides with different degrees of failure or deterioration should be used with caution.
Third, the emulsion: in the identification of such pesticides, the bottle can be shaken vigorously and then left to observe for about 1 hour. If stratification occurs, the pesticide has expired. In addition, the medicine bottle can be placed in warm water, and it is observed after the heat absorption. If it is an undeteriorated pesticide, the precipitate in the bottle will slowly dissolve or even disappear completely. On the contrary, it is a failed pesticide.
The pesticide failure identification method is as described above for your reference. Tips for pesticide manufacturers , in the purchase of pesticides must strictly follow the above resolution criteria.