Pay attention to the use of conventional pesticides
When farmers use conventional pesticides, they do not pay attention to their use and other factors, which directly affect the effects of pesticides. There are also some pesticides mixed, which will have a certain impact. China Pesticide Network gives you a summary of some common pesticide use precautions.
Pesticide I. Can be killed, copper cream, copper sulfate and other copper preparations. This is a relatively common type of pesticide. However, there are many pesticide varieties such as methyl thiophanate, carbendazim, dysen zinc, mancozeb, sterilized spirit, thiram, etc., which cannot be mixed with copper preparations. If mixed, it will reduce the efficacy of the drug. half.
2. Bt powder, green worm, and bacillus in biological preparations. This is a kind of common bacterial pesticide. Its insecticidal action is related to the quantity and activity of bacteria, that is, only at suitable temperature, humidity and light. Under the conditions, the best control effect can be achieved. It requires a suitable temperature of 20~30 °C, the humidity needs to be larger, and it is required to avoid direct sunlight. It is best to apply it in the morning or evening when there is dew or on a cloudy day. It is worth noting that the mixing of such pesticides with fungicides will greatly reduce their activity.
Third, the enemy Kesong, phoxim, rotenone, see light easy.
The pesticide network reminds everyone that some pesticides such as diclosan, phoxim, rotenone, and light are easily decomposed. Therefore, try to choose cloudy or morning and evening. For example, the use of phoxim spray, its validity period is only 3 to 5 days, but it is formulated into a medicinal soil to control underground pests in the ground, and the effective period can reach 1 month.
4. Retinoids, anti-virus cockroaches, mancozeb, sulphate, chlorhexidine, carbendazim, jinggangmycin, rotenone, chlorfenapyr, phoxim and pyrethroids.
There are many pesticide varieties that are stable in acidic and neutral media, but are easily decomposed in the presence of alkali. Such pesticides include cytotoxic, anti-virus cockroach, mancozeb, keering, chlorhexidine, carbendazim, jinggangmycin, rotenone, chlorpyrifos, phoxim and pyrethroids. Therefore, such pesticides cannot be mixed with alkaline pesticides such as ketone, Bordeaux, sulfur suspension, and stone sulphur, otherwise the efficacy will be reduced.
Melons, legume crops is more sensitive, should be used with caution dichlorvos, fosetyl-aluminum, Dexon, phoxim, bisultap, Miebing Granville, melons, legume crops with pesticides more easily in these crops To produce phytotoxicity, it is best to use other drugs instead.
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