Both pyrazosulfuron-methyl and bensulfuron-methyl are herbicides , and the difference between the two is easily confused. So what is the difference between pyrazosulfuron-methyl and bensulfuron-methyl? The important differences between Long and Bensulfuron are as follows. Let's take a look at it.
I. Pyrazosulfuron
The selective systemic herbicide is mainly absorbed by the root system, rapidly transfers in the weed plant, inhibits growth, and the weeds gradually die. Rice can decompose the agent and has little effect on rice growth. The drug has stable efficacy and high safety, and the duration of action is 25 to 35 days.
Applicable crops: rice paddy field, live field, transplanted field.
Control object: It can prevent annual and perennial broadleaf weeds and sedge weeds, such as heterosex sedge, water sedge, squid, ragweed, cress, squash, wild sage, sage, green Ping, sputum. It has certain control effect on alfalfa and is ineffective against thousands of gold.
Usage: It is generally used in the 1~3 leaf stage of rice. It is sprayed with toxic soil with 10% wettable powder of 15% per acre. It can also be sprayed with water. Keep the water layer for 3 to 5 days after the medicine. Transfer the field, use the medicine 3 to 20 days after the insertion, and keep the water for 5 to 7 days after the medicine.
Note: The safety of rice is good, but the late rice varieties (ç²³, japonica rice) are relatively sensitive. It should be avoided in the late bud stage, otherwise it will cause phytotoxicity.
Second, bensulfuron-methyl
Features: It is a selective systemic herbicide for rice field. It can effectively control 1-year-old and perennial broad-leaved weeds and sedges, which can be absorbed by weed roots and leaves and transmitted to other parts. For rice safety, the method of use is flexible.
Scope of application: Suitable for rice fields to control 1 year old and perennial broadleaf weeds and sedge.
Instructions:
1. The rice field and the direct seeding field can be applied after sowing to the weeds 2 leaf stage. Control 1 year old broadleaf weeds and sand grass, use 20% wettable powder 20-30g per acre, spray 30kg of water or 20kg of mixed tidal soil. Keep the water layer 3-5cm for 3-4 days.
2. Rice transplanting fields can be used for 3 weeks before and after transplanting, but it is better to apply them 5-7 days after transplanting. Use 10-30 grams of 10% wettable powder per acre to prevent perennial weeds and remove valerian, and the dosage can be increased to 30-50 grams. The water-repellent layer is applied 5cm, which can be sprayed on water or mixed with fine soil. The water layer can be kept for 3-4 days and naturally dried.
Precautions:
1. Bensulfuron-methyl has a good effect on weeds within 2 leaf stage, and the effect is more than 3 leaves.
2, the effect of valerian is poor, the sedge of sedge is not suitable for use.
3. Rinse the spray equipment after use.
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