Is the herbicide applied in the morning or in the afternoon? Why?

In the afternoon, the temperature is very high, and the plants undergo intense transpiration in order to reduce the foliar temperature. At that time, the stomata will become larger, and the herbicide will easily penetrate into the leaves of the plant. However, it is not advisable to do it during the hottest day.

Many plants temporarily close their stomata and go dormant to avoid water loss. Herbicides treated with stems and leaves are best administered before 10 a.m. in the morning after the dew has evaporated, or after 4 p.m. This allows the leaves of the weeds to absorb more herbicides and maximize the effect of the herbicide.

The requirements for soil treatment agents are not as strict as those for stem and leaf treatments, but they should be avoided during the high temperature period during the day to avoid volatilization of the agent after application. Whether it is a stem and leaf treatment or a soil treatment, it should be administered in conditions without wind or light winds. When applying soil treatment agents, the soil in the field is not dry.

Herbicides treated with stems and leaves are best administered before 10 a.m. in the morning after the dew has evaporated, or after 4 p.m. This allows the leaves of the weeds to absorb more herbicides and maximize the effect of the herbicide. The requirements for soil treatment agents are not as strict as those for stem and leaf treatments, but they should be avoided during the high temperature period during the day to avoid volatilization of the agent after application.

In the afternoon, the temperature is very high, and the plants undergo intense transpiration in order to reduce the foliar temperature. At that time, the stomata will become larger, and the herbicide will easily penetrate into the leaves of the plant. However, it is not advisable to do it during the hottest day.

Many plants temporarily close their stomata and go dormant to avoid water loss. Herbicides treated with stems and leaves are best administered before 10 a.m. in the morning after the dew has evaporated, or after 4 p.m. This allows the leaves of the weeds to absorb more herbicides and maximize the effect of the herbicide.

The requirements for soil treatment agents are not as strict as those for stem and leaf treatments, but they should be avoided during the high temperature period during the day to avoid volatilization of the agent after application. Whether it is a stem and leaf treatment or a soil treatment, it should be administered in conditions without wind or light winds. When applying soil treatment agents, the soil in the field is not dry.

Herbicides treated with stems and leaves are best administered before 10 a.m. in the morning after the dew has evaporated, or after 4 p.m. This allows the leaves of the weeds to absorb more herbicides and maximize the effect of the herbicide. The requirements for soil treatment agents are not as strict as those for stem and leaf treatments, but they should be avoided during the high temperature period during the day to avoid volatilization of the agent after application.

In order for the planted vegetables to thrive, many farmers choose to spray herbicides so that the vegetables can absorb more nutrients as they grow. So is the herbicide applied in the morning or in the afternoon? Why? You'll know after reading it.

Herbicides are more effective when sprayed in the morning

Under normal circumstances, herbicides are sprayed in the morning to achieve better results. Because herbicides are very different from traditional pesticides, the drug is more effective in warm environments, but it should not be overly hot. If the herbicide is applied in the hot and humid afternoon, it may cause the effect to evaporate rapidly, which is not conducive to the herbicide being absorbed by the weeds in the field.

The best temperature for herbicide is between 10°-25°. If the temperature is too low, it may affect the ability of the weed to absorb the herbicide.

After autumn, herbicides can be sprayed in the afternoon

If you are planting crops in early spring or after autumn, you can choose to apply herbicide in the afternoon. Because the temperature in early spring and autumn will drop significantly, the temperature in the morning may not reach 10 °, at this time the herbicide will affect the overall efficacy, weeds in the cold environment, the absorption capacity will be greatly reduced, so you can choose to play in the afternoon. In such seasons, the afternoon sun is warmer and the temperature is much higher, easily reaching more than 10°C.

When the crops are sprayed with herbicides, you should be careful of rain, and remember not to apply herbicides in the early morning when the dew has not completely faded, because the herbicides may be diluted by the dew at this time and cannot play a normal role in weeding. Before applying herbicides, farmers can pay attention to the weather conditions first, and spray herbicides with confidence if there is no rain in the next few days, so as to achieve better results.

In general, the time of herbicide should be decided according to the temperature and environment of the area, if it is summer, it is best to choose the morning, if it is spring and autumn, then it is best to choose the afternoon to spray, which can promote the rapid absorption of herbicide components by plants and enhance the efficacy.

When spraying herbicides, the general weather is before 10 o'clock in the morning, no dew spraying, or after 5 o'clock in the afternoon, and in the hot and dry weather in summer, it is more recommended to spray after 6 o'clock in the afternoon. When spraying, the liquid will not volatilize quickly, and within a few hours after spraying, the temperature will drop down and the humidity will increase, which is very conducive to the absorption of the liquid and the weeding effect will be improved. If the medicine is applied in the morning, the time period for the absorption of the liquid medicine is just high temperature and low humidity, and the effect is poor.

The main thing is to look at the temperature of the day. If you want the herbicide to play the best role, then you must choose a time period when the temperature is higher than 10, generally speaking, the higher the temperature, the more obvious the effect will be, but it can not be carried out when the temperature is too high, otherwise the herbicide will evaporate in a short time, and it will not work. If it's cloudy, it's in the morning, and if it's sunny, it's in the afternoon.

It is necessary to grasp the timing and use the medicine in a timely manner, because the two major factors that determine the effect of weeding, one is temperature, the other is humidity, and the most suitable weeding temperature is between 15 and 25 degrees, so it is necessary to grasp the timing and use the medicine in a timely manner.

In the afternoon, when the temperature is high, the plants will transpire violently, lowering the temperature of the leaves. At this time, the stomata will open widely, and the herbicide can easily penetrate into the leaves of the plant. However, it should not be carried out at the middle of the day when the temperature is highest, because at this time, many plants will temporarily close the stomata and enter a dormant state in order to avoid excessive water loss.

Although the requirements of soil treatment agents are not as strict as those of stem and leaf treatment agents, they should be avoided when the pesticide is applied at high temperature at noon to avoid the volatilization of the pesticide after application. Both stem and leaf treatments and soil treatments should be applied in conditions where there is no wind or light winds. When applying soil treatment agents, it is required that the soil in the field should not be dry.

Crops sown during the Spring Festival and summer, such as corn, soybeans, peanuts, etc., can be weeded in the morning and afternoon. During this period, daytime temperatures are high, especially at noon, and weather over 30 degrees is not suitable for herbicides. If the liquid evaporates too quickly, it affects the efficacy of the medicine, you can choose 7 If it is a crop sown in autumn or winter (such as wheat), the time close to noon should be chosen when weeding, and on the contrary to the above, the medicine should be prescribed between 10 and 15 o'clock.

Because the temperature is too low, the effect of the drug will also be affected, choose this time period, the temperature will rise, the weeds will be relatively absorbed, and the weeding effect is relatively good.

Depending on the actual situation, the drug** time mentioned in the above 2 points applies to individuals or growers with small plots. If you are planting a large farm or a farm, there should be a difference if you need to hire someone to take the medicine. Now the hired workers take medicine, 1,200 yuan a day, and if they only let them work for these few hours, the employer is probably not willing.

During the actual injection, some friends will react. Some herbicides (such as grasses) are more effective when there is dew than when there is no dew, so it is decided to spray them when the morning dew has not yet fallen. Friends who are interested in this can give it a try.

In the case of sunny and cloudy days, this is analyzed on a scale of 1 and 2. In summer, when the temperature is high, sunny or cloudy, it is best to avoid noon. Because the temperature is high, it will evaporate.

If it is a winter herbicide, it is best to apply the agent in clear weather.

Herbicides can be divided into pre-emergence herbicides, post-emergence herbicides, long-term herbicides, soil sealing herbicides and other herbicide varieties, generally spraying herbicides to improve the safety of crops. It is usually decided to spray herbicides during the day. The quality of the herbicide effect is related to whether the concentration of the herbicide is appropriate, whether the temperature reaches the best temperature of the herbicide, according to the different crops planted, the general herbicide temperature should be at least 6 degrees or more, in order to play a better weeding effect.

For example, spraying herbicides in wheat fields can be divided into spraying before the year and spraying after the year, using herbicides for winter wheat, preferably spraying sand after 10,336,000 in the morning and before :00 in the afternoon. In other words, the sun's light is used to raise the temperature during the day and improve the weeding effect.

The planted garlic is weeded in the field, and the garlic is suitable for planting around the National Day. At this time, the outside temperature is basically stable at about 20 degrees, and the soil sealing herbicide should be sprayed after the garlic planting is completed. At this time, in the morning, afternoon, and throughout the day, if the soil is suitable, you can spray the soil sealing herbicide.

Cover with mulch film immediately after spraying to moisturize and improve the sealing effect of the sealing herbicide.

First of all, the difference between "morning shot" and "afternoon hit", in fact, this is just a general statement, what really determines the efficacy of the drug is actually the temperature, the herbicide wants to give full play to the effect, the temperature should be above 10. Theoretically, the higher the temperature, the better the efficacy; However, too high a temperature will also cause the herbicide to evaporate too quickly, and the efficacy will also be reduced, so the optimal spraying temperature should be between 10 and 24. Generally, the time to spray herbicides is in summer, and it is easy to reach more than 10, so it can be said that the morning and afternoon spraying can play a good role.

However, it should be noted that the summer temperature is high, and the temperature can reach about 20 to 30 degrees Celsius after 10:30 a.m. and until 4 p.m.

Herbicides must be selected when the weather is good to play the effect is good, farmers know that the higher the temperature, the easier it is to play the herbicide grass, on the contrary, the herbicide can not play its role, for some grasses with more tenacious vitality is in vain. It is best to apply herbicides in spring near noon, because the temperature is low in the morning and evening in spring, and the effect will be better between 11 and 3 o'clock. Under strong sunshine conditions, the temperature increases, the herbicide activity is enhanced, and the herbicide efficacy is improved. When the sunlight is weak, the herbicide sprayed on the weeds conducts very weakly, and even cannot be conducted if there is a lack of light.

Is the herbicide applied in the morning or afternoon? Many old farmers are wrong, no wonder it doesn't work.

The best time for pre-seedling herbicide spraying is just after sowing, because the surface of the land is moist just after sowing, herbicides can play a good effect, and it is best to spray on a windless day, but there is wind when planting in spring, you can lower a little spray faucet time to choose: generally speaking, about 10 o'clock in the morning after the dew evaporates and dries and about 5 o'clock in the afternoon before the water mist is generated. It should be noted that the temperature is cool in spring and autumn, so you can choose to do it around 10-11 am or 2-3 pm.

<> the effect of herbicides has a lot to do with temperature, playing in the morning or in the afternoon is actually to choose a relatively suitable temperature to apply pesticides, so as to make the herbicide achieve the best effect, it is related to the crops planted, the following is an example of field crops. Sunny weather. Generally speaking, in the sunny weather in summer, we use herbicides for weeding with a higher probability, at this time because of the summer scorching sun, the temperature is relatively high, it is recommended that you choose to spray at about four or five o'clock in the afternoon,.

The best effect of spraying herbicide is that the surface of the weed blade is evenly moistened, and the agent can be fully absorbed by the weeds. If there is dew on the crop leaves or pressed grass leaves, the dew on the upper crop leaves falls with the droplet pressure of the sprayer, and the herbicide is played in the weather with low temperature, and the herbicide will be played slowly when the temperature reaches more than 10 degrees Celsius, so that the herbicide can be fully exerted, so the herbicide should be sprayed when the temperature is high on a sunny day, winter and spring.

Huaihai area is generally a season of rice, and rice is in the summer high temperature area, then to avoid the hot and high temperature, 8 to 10 o'clock in the morning is better, 16 o'clock to 19 o'clock in the afternoon is appropriate. Especially corn weeding, if the soil drought is severe, the targeting of herbicides is relatively strong. There are many weeds and a complete variety of herbicides, and the purpose of applying it is to eliminate weeds, which is generally applied by spraying method, either on the surface of the soil layer or on the grass stems and leaves.

It is better to play in the morning, because the temperature will not be very high in the morning, and it will be more comfortable to go out to work at this time.

It is better to shoot in the afternoon, because the sun is abundant in the afternoon, and after applying herbicides in the afternoon, the grass will be killed and will not allow the grass to survive.

It is better to shoot in the afternoon, because there will be plenty of sunlight in the afternoon, and the herbicide can also have a good effect at this time, and it will not be quickly dissipated in the process.

It's better to play in the morning. Because the sun is more abundant in the morning. You can be more careful when applying herbicides.