Spring spraying of wild wheat Temperatures and problems to be aware of
As the weather warms, is wild wheat suitable for spraying? Things to look out for:
Now, the rain and snow have stopped, the sun has come out, according to the weather forecast, many areas have a warming trend, with the rise in temperature, wheat has entered a new stage of growth, in this process, the regreening period is crucial, therefore, in the regreening period to do a good job of weeding, control, disease prevention, water and fertilizer and a spray of three prevention measures. Some people ask, can you spray wild wheat when the temperature has risen recently? What do I need to pay attention to? Let's take a look.
Due to the continuous wheat and corn for many years, the number of wild wheat in the farmland is not only increasing year by year, but also the resistance to the environment is increasing. Due to the influence of factors such as temperature, humidity, climate (which are extremely demanding), it was not sprayed this year due to various factors, so many people are not very sure about the planting date for the next year. Wild wheat is a broad name, the general wild wheat has three kinds of bird's wheat, oats, and knotted wheat, and wild wheat is between the beginning of wheat seedlings and germination.
Judging from the weather forecast, in March, the temperature will gradually rise, to about 11, this temperature, can you spray wild wheat? And if you want to be black, you must meet these three conditions. First, wheat should turn green early; 2. The regreening time of wheat should not exceed jointing (usually before emergence); 3. The temperature shall not be less than 2 degrees Celsius or higher than 10 degrees Celsius for 5 consecutive days, and there shall be no low temperature, low temperature, rain and snow and other bad weather.
In view of the fact that wild wheat (especially arthropodium) and wheat are both "close relatives", the most commonly used herbicide is methyldisulfuron, which has a good anti-death effect, but is easy to cause crop damage during death-prevention. However, there are detoxification "enzymes" in the wheat body, although the temperature increase can offset the harm caused by methyldisulfuron, but when the temperature drops or the temperature plummets, it will poison the plant, so when controlling wild wheat, we must avoid unfavorable weather such as sudden temperature drops, rain, snow and frost.
In addition, in order to avoid overspraying wild wheat, some people think that overuse of pesticides is a great waste, but they do not realize that doing so will cause greater harm. At the same time, yellow weak seedlings can not be sprayed, only strong seedlings can be sprayed, and can not be sprayed with other agents, to be sprayed separately. If there is only finch wheat, fluzosulfurone can be added, but if it is present at the same time, alkynyl ester must be added. If there are crops such as throttle, finch wheat, oats, etc., fluzosulfonamide and enomelohydramine, methyldisulfuron and other agents can be used for spraying to achieve good control effect.
After the New Year, everyone will understand that this wild wheat, that is, to suppress it, will not exert a greater power than in previous years. Also, pay attention to do not spray wild wheat after jointing, according to the regulations on our side, from March 5th to March 20th, in March 5-15 days, choose a time when the temperature is relatively high at noon for spraying, after the spring equinox, do not water wild wheat, otherwise it will cause pesticide damage, and it will also affect the normal growth of wheat.
All in all, as the temperature rises, whether or not wild wheat can be used depends on the specific situation of the spray, and also pay attention to the temperature, humidity, weather, etc. In addition, you should also pay attention to what kind of wild wheat it is, so that you can achieve the desired effect without harming the wheat. Do you remember?