In recent days, many farmers have reported that in the crop growing areas such as melon beans and eggplant, beef tendon grows very quickly. They need to fight drugs frequently, herbicides are used a lot, but there are few effects, so many farmers Friends have endless headaches. In the past, glyphosate was a good agent for control of goosegrass, but the control effect is not obvious at present. So how does barnyardgrass control it? What kind of pesticide control effect is good? Let's find out about it.
Why glyphosate is not effective against tendon grass
Goosegrass is a grassy weed that has a well-developed and deep root system and is particularly resistant to drought and growth. With the heavy use of herbicides such as paraquat and glyphosate, the ability of weeds to metabolize is changing. The resistance of the weeds to the surviving offspring is more and more obvious, and weeds are becoming more and more adaptable. Because of the characteristics of weeds themselves and their resistance to drugs. In the past, 50 gallons of glyphosate was used to kill goosegrass. The effect of increasing the concentration to 100 ml or even higher concentration is not obvious. As a result, many farmers shop owners are generally no longer recommend glyphosate as a preventive drug.
Goosegrass is a drought-tolerant weed, and the waxy layer on the leaf surface is thicker. Some glyphosate additives have poor quality, affecting the spreadability of the pesticide on the surface of the weed, and it is difficult for the pesticide to effectively enter the weeds. Pharmacy effect is greatly reduced.
What kind of pesticides have good control effect on goosegrass?
"Gluphosaminophosphonate + clethodim" becomes mainstream pharmaceutical
Glyphosate retreats on the barnyardgrass and gives other herbicides a chance to “upstreamâ€. Glufosinate, clethodim, and quizalofop to replace glyphosate have become the mainstay of farmer households against tendongrass .
It is understood that the current control of goosegrass is mainly used glufosinate, and most agricultural resources shop will recommend the farmers to be sprayed with clethodim, glufosinate (100 ml / barrel of water) + clethodim (30 ml / The combination of barrels of water has almost become a "sauce handkerchief" for the prevention and treatment of barnyardgrass in agricultural stores. The reason is that glufosinate can quickly kill grasses, but it can also kill other weeds. It is safe for crops, but its effective period is short, only 15 days.
At present, there are agricultural stores that reflect the emergence of glufosinate resistance. Farmers will experience slow or incomplete death due to weeding at a dose of 100 ml per barrel of water. While clethodim has a special effect on Gramineae goosegrass, combined with less application before, there is no resistance at present, although it takes 6-7 days to see the efficacy, but the effective period of up to 45 days, the two components together Can be described as complementary advantages.
Whether it is glufosinate alone or a combination of “glufosinate + clethoneâ€, the most direct impact on farmers is the increased cost of pesticide application. Glufosinate is required to contain 10-12 water per barrel of water (100 ml/barrel). Yuan, while glyphosate was only 4 to 5 yuan per barrel of water.
New combinations continue to emerge
Although glufosinate and clethodim are currently popular choices for control of goosegrass, some combinations of pesticides in field trials have also demonstrated excellent control effects on goosegrass. For example, glufosinate plus the import of Anrongle additives can effectively promote the absorption of glufosinate, and the synergistic effect is more than 30%. Compared with the control field, the time for dead grass is more than half ahead of time, and dead grass is not complete. Turn green, and it will rain at low temperature or after spraying for half an hour. The efficacy will not be affected.
In addition, some companies have used pharmaceutical formulations to improve the efficacy of glyphosate, so that they still play a cost-effective advantage.
For example, the market recently introduced "glyphosate + fluaziloxacin" compound of the agent. The prazifluazin can effectively control the tendon, and the glyphosate can still play its role in killing other weeds, and the price is lower than the single glufosinate, and the current market response is good.
How to control cattle bark grass what kind of pesticides
Cow tendon control precautions
The selection of herbicides for tendon tends to be important, but the timing of prevention and treatment cannot be ignored. The weeding habit of farmers is generally to see that the grass grows taller and grows longer before it is sprayed. However, it is extremely difficult to control the weeds such as goosegrass when they grow taller. It is recommended that the tendrils grow to 3～ When 4 leaves are used, the best control effect is achieved. Even a small dose of glyphosate can kill it.
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