In the crop planting areas such as melon beans and solanaceous fruits, buying herbicides to prevent goosegrass has become the reason why farmers frequently visit agricultural resources stores. The growers generally reflect that the tendon grass grows very fast, and it is necessary to fight drugs frequently. 1 mu of vegetable land, the annual herbicide will cost about 130 yuan, and the old grass is not easy to be killed, which is very headache.
In a few years, the tendon grass spread rapidly, and the industry believes that it is mainly due to the characteristics of the weed itself and its resistance. In the past, a bucket of water plus 50 ml of glyphosate could kill the tendon grass, and now the effect of increasing to 100 ml or even higher is not obvious. As a result, many farmers' shop owners generally do not recommend glyphosate as a preventive drug.
It is understood that the tendon is a grassy malignant weed, the root system is developed and deep, and the drought tolerance and growth ability are particularly strong. With the extensive use of herbicides such as paraquat and glyphosate, the metabolic capacity of weeds changes. Self-continuous selection, the survival of the offspring weed resistance is becoming more and more obvious, and the adaptability of weeds is getting stronger.
Regarding the resistance of goosegrass to glyphosate, the technical staff of glyphosate manufacturers said that the tendon is a drought-tolerant weed, the waxy layer on the surface of the leaf is thick, and the quality of the additives in some glyphosate preparations. Poor, affecting the spread of the agent on the surface of the weed, the drug is difficult to effectively enter the weed body, the effect of the drug is greatly reduced.
"Glufosinate + ketene" into mainstream drug
Glyphosate has lost ground in the prevention of goosegrass, giving other herbicides the opportunity to “upperâ€. Glufosinate, ketene, and quizalofop-methyl have replaced glyphosate as the mainstream of farmers’ control of goosegrass. Pharmacy.
It is understood that the current control of goosegrass is mainly the use of glufosinate, and most of the agricultural stores will recommend farmers to spray with chlorfenone, glufosinate (100 ml / barrel of water) + ketene (30 ml / The combination of barrel water has almost become the “killer†for the farmer's shop to control the tendon grass. The reason is that glufosinate kills grass quickly, can kill goosegrass quickly, and can kill other weeds, which is safe for crops, but has a short duration of only 15 days. At present, there are agricultural resources stores that glufosinate also shows signs of resistance. Farmers will eliminate slow or incomplete dead grass by weeding at a dose of 100 ml per barrel of water. Butalkonone has special effects on the grasses of the grass, and it has not been applied before. It has no resistance at present, although it takes 6 to 7 days to see the effect, but the effect period can reach 45 days. Can be described as complementary.
Whether it is glufosinate alone or “glufosinate + ketene†combination agent, the most direct impact on farmers is that the cost of application is increased. Glufosinate per barrel (100 ml/barrel) is 10-12. Yuan, and in the past glyphosate was only 4 to 5 yuan per barrel of water.
New combinations continue to emerge
Although glufosinate and ketene are currently popular choices for the prevention of goosegrass, some combinations of agents have also shown excellent control of goosegrass in field trials. For example, glufosinate plus imported An Rongle auxiliaries can be used to promote the absorption of glufosinate, and the synergy is more than 30%. Compared with the control field, the dead grass time is more than half of the time, and the dead grass is not After returning to the green, it will rain after half a hour of low temperature or spraying, and the effect will not be affected.
In addition, some companies have improved the efficacy of glyphosate through the combination of pharmaceuticals, so that they still play a cost-effective advantage.
For example, the newly-launched "glyphosate + flufenacil" compounding agent. Pyridoxine can effectively prevent goosegrass, glyphosate can still play its role in killing other weeds, and the price is cheaper than single-use glufosinate, the market reaction is good.
Need to be reminded that the choice of anti-beat tendril herbs is important, but the timing of prevention can not be ignored. The peasant's weeding habits generally show that the grass grows taller and longer, and only sprays it out, but it is extremely difficult to prevent the malignant weeds like goosegrass when it grows tall. It is recommended that the stalks grow to 3~ 4 leaves have the best control effect, even small doses of glyphosate can kill it.
In the crop planting areas such as melon beans and solanaceous fruits, buying herbicides to prevent goosegrass has become the reason why farmers frequently visit agricultural resources stores. The growers generally reflect that the tendon grass grows very fast, and it is necessary to fight drugs frequently. 1 mu of vegetable land, the annual herbicide will cost about 130 yuan, and the old grass is not easy to be killed, which is very headache.
In a few years, the tendon grass spread rapidly, and the industry believes that it is mainly due to the characteristics of the weed itself and its resistance. In the past, a bucket of water plus 50 ml of glyphosate could kill the tendon grass, and now the effect of increasing to 100 ml or even higher is not obvious. As a result, many farmers' shop owners generally do not recommend glyphosate as a preventive drug.
It is understood that the tendon is a grassy malignant weed, the root system is developed and deep, and the drought tolerance and growth ability are particularly strong. With the extensive use of herbicides such as paraquat and glyphosate, the metabolic capacity of weeds changes. Self-continuous selection, the survival of the offspring weed resistance is becoming more and more obvious, and the adaptability of weeds is getting stronger.
Regarding the resistance of goosegrass to glyphosate, the technical staff of glyphosate manufacturers said that the tendon is a drought-tolerant weed, the waxy layer on the surface of the leaf is thick, and the quality of the additives in some glyphosate preparations. Poor, affecting the spread of the agent on the surface of the weed, the drug is difficult to effectively enter the weed body, the effect of the drug is greatly reduced.
"Glufosinate + ketene" into mainstream drug
Glyphosate has lost ground in the prevention of goosegrass, giving other herbicides the opportunity to “upperâ€. Glufosinate, ketene, and quizalofop-methyl have replaced glyphosate as the mainstream of farmers’ control of goosegrass. Pharmacy.
It is understood that the current control of goosegrass is mainly the use of glufosinate, and most of the agricultural stores will recommend farmers to spray with chlorfenone, glufosinate (100 ml / barrel of water) + ketene (30 ml / The combination of barrel water has almost become the “killer†for the farmer's shop to control the tendon grass. The reason is that glufosinate kills grass quickly, can kill goosegrass quickly, and can kill other weeds, which is safe for crops, but has a short duration of only 15 days. At present, there are agricultural resources stores that glufosinate also shows signs of resistance. Farmers will eliminate slow or incomplete dead grass by weeding at a dose of 100 ml per barrel of water. Butalkonone has special effects on the grasses of the grass, and it has not been applied before. It has no resistance at present, although it takes 6 to 7 days to see the effect, but the effect period can reach 45 days. Can be described as complementary.
Whether it is glufosinate alone or “glufosinate + ketene†combination agent, the most direct impact on farmers is that the cost of application is increased. Glufosinate per barrel (100 ml/barrel) is 10-12. Yuan, and in the past glyphosate was only 4 to 5 yuan per barrel of water.
New combinations continue to emerge
Although glufosinate and ketene are currently popular choices for the prevention of goosegrass, some combinations of agents have also shown excellent control of goosegrass in field trials. For example, glufosinate plus imported An Rongle auxiliaries can be used to promote the absorption of glufosinate, and the synergy is more than 30%. Compared with the control field, the dead grass time is more than half of the time, and the dead grass is not After returning to the green, it will rain after half a hour of low temperature or spraying, and the effect will not be affected.
In addition, some companies have improved the efficacy of glyphosate through the combination of pharmaceuticals, so that they still play a cost-effective advantage.
For example, the newly-launched "glyphosate + flufenacil" compounding agent. Pyridoxine can effectively prevent goosegrass, glyphosate can still play its role in killing other weeds, and the price is cheaper than single-use glufosinate, the market reaction is good.
Need to be reminded that the choice of anti-beat tendril herbs is important, but the timing of prevention can not be ignored. The peasant's weeding habits generally show that the grass grows taller and longer, and only sprays it out, but it is extremely difficult to prevent the malignant weeds like goosegrass when it grows tall. It is recommended that the stalks grow to 3~ 4 leaves have the best control effect, even small doses of glyphosate can kill it.
More pesticide knowledge , please pay attention to China Pesticide Network
(Source: China's first vegetable network)
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