The temperature in March has warmed up, and how much grass damage is in the germination stage. It is the best time to eliminate grass damage. The common types of weeds in field crops are dicotyledonous weeds and monocotyledonous weeds. What are the chemical weeding schemes in spring? Let's follow the Xiaobian to understand it.
Fields dominated by dicotyledonous weeds
Use 75% of bensulfuron-methyl + 4% oxazolone 3g per acre, or 10% of bensulfuron-methyl 20g + 20% flufenoxyacetate emulsifiable concentrate, spray evenly with water 30~40kg;
Monocotyledonous weed dominated field
Use 24% acetylene ester emulsifiable concentrate 34 ml + 50% isoproturon WP of 150 g per acre, or 6.5% of 6.9% fenoxapropone water emulsion, spray evenly with water 30 to 40 kg.
There are three things to keep in mind when using herbicides :
First, the right medicine
The sensitivity of different crops and even different crop varieties and different growth stages to the same herbicide is also very different. Therefore, the first step in the rational use of herbicides is to choose the right medicine.
Second, the temperature is suitable
The efficacy of most herbicides is related to temperature, especially the systemic herbicides, which are used in the temperature conditions suitable for the rapid growth of weeds, which can make the weeds absorb more chemicals and the effect is better. .
Third, the key to eliminate
Herbicides, whether they are contact-type or systemic, can only be effective if they are absorbed or absorbed into a sufficient amount of the agent. Therefore, in the application of herbicides, it is also very important to be able to be applied.
Today, the knowledge about chemical weeding in spring is introduced here. To learn more about pesticides , please pay attention to China Pesticide Network.
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