During the growing process of crops, constant diseases and pests hinder their growth, or "end" their life, or affect their development. Farmer uncle this is a headache, racking their brains, trying to find ways to eliminate these evil diseases and pests, such as wheat weeding, when to play, how to play, there are ways, Xiaobian listed some methods to improve the efficacy of wheat herbicides, come to learn!
1. Wheat 4 leaves before and after jointing do not beat herbicide
Most wheat herbicides are used after 4 leaves and stopped at the jointing stage of wheat. Before the 4th leaf stage, wheat was still tender, and its detoxification ability and immunity were low. After jointing, wheat enters booting stage, which is also a critical and vulnerable period in its life. Herbicides are easy to cause harm in these two periods. In particular, 2-methyl4 chloride, 24-titrate, sometimes cause wheat ears to be pulled out, or deformed, which has a great impact on the yield, in addition to chlorofluoropyloxy-acetic acid herbicides can be used in half after the knot, other herbicides should not be easily tried.
2. Do not use herbicide for 7 days before and after application of organic and carbamate pesticides
As we all know, corn fields coated with organophosphorus or carbamate pesticides need an interval of 7 days before using herbicides, and wheat fields coated with such pesticides also need at least an interval of 3-5 days before using herbicides, otherwise it is easy to cause yellow wheat and leaf burning phenomenon, because organophosphorus pesticides reduce the ability of wheat to degrade herbicides. The subsequent use of herbicides can lead to drug damage.
3. Do not use herbicides if the daily average temperature is below 8 degrees
In addition to individual herbicides (difluorosulfonachlor, more resistant to low temperature), the general herbicide in low temperature weather, the effect is not ideal, in the daily average temperature of more than 8 degrees, the higher the temperature the better the effect of weeding, because weeds absorb light and grow strong, stomata open, easy to absorb water and liquid medicine (low temperature is the opposite), can achieve good weeding effect.
4. Don't use herbicides in dry weather
Herbicide in addition to look at the temperature, but also to grasp the soil moisture, in the case of serious drought, to seize the wheat field watering time, timely application, herbicide effect play, most herbicide effect play requires a certain amount of soil moisture, soil moisture in 40%-60% is conducive to the herbicide effect play.
5. Do not use herbicides before and after heavy rain and before cold air
The use of herbicides before and after heavy rain and the arrival of cold air on the one hand affects the effect of weeding, on the other hand, it is easy to cause drug damage, these are bad weather, especially the 7 days before the spring cold can not use herbicides, winter medication should pay more attention to the weather forecast.
6. Do not spray or leak.
The use of herbicides must be evenly sprayed, if the missing spray or less spray the weeds by the uneven drug, the control effect is certainly not good, remember not to spray again, wheat is prone to yellow, easy to cause herbicide damage. Now there are a lot of plant protection machinery, spraying efficiency is high, the effect is good, there will be no re-spraying leakage phenomenon, such as the intelligent plant protection machinery produced by my company, it is very suitable for wheat field spraying.
The above is the way to improve the efficacy of herbicides in wheat fields and increase wheat yield. If you think there is something wrong or there is a better way, welcome to contact Xiaobian to provide your valuable advice!