Paspalum grass in rice fields is hard to get rid of because you don't use these measures.

Five or six years ago, barnyardgrass could be well controlled with 10% cyhalofluoxate EC, but now it has almost run out of herbicides in rice fields or has no effect. Why? When I went to the agricultural materials sales office to inquire, the answer I got the most was "this is green paspalum". Try it with a little more. It's not that my medicine is bad. "

My friend, I believe you have tried and tried many kinds of herbicides, such as pentafluorosulfonamide, ethoxyfluoxane, phenylthioamide, paspalum and so on, and the barnyardgrass is still swaying in the wind. It makes science feel sad to listen to it. Below, I would like to give you advice from two aspects: why barnyardgrass is so resistant to herbicides in recent years, and how to control barnyardgrass. I hope it will be helpful.

The first green paspalum's herbicide-resistant journey.

Since the discovery of anti-quinolinic acid herbicide in Ruian in 2003, a large number of serious resistance to barnyardgrass has been found in various places in recent years.

There are two reasons for this. There are many varieties of barnyardgrass, mixed with rice seeds, or running all over the country on the harvester, hybridizing with barnyardgrass varieties and being invaded by barnyardgrass varieties in other places, resulting in more and more resistant barnyardgrass. two。 The abuse of chemical herbicides, with the increase of drug resistance of barnyardgrass, artificially increasing the dosage of herbicides, barnyardgrass which could produce high level of resistance in the past hundred years became incurable in just a few years. Due to the above two reasons, the herbicide-resistant journey of paspalum was plain sailing, reaching an unprecedented "height".

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Second, how to use medicine to control paspalum.

Take "close weeding primarily, kill paspalum seedlings as a supplement, and pull out leaky barnyardgrass" as the policy. Closed weeding in rice sowing about 3 days, can choose butachlor, or propachlor spray treatment, pay attention to keep the soil moist.

Kill paspalum grass as early as possible, before barnyardgrass 3 heart a leaf, at this time the dosage is small, it is safe for rice, it is not easy to kill again, the medicine can be mixed, according to different places, you can consult the local economic medicine dealer, pay attention to cooperate with drainage, return water after 24 hours, keep the best effect for 7 days.

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Pulling out the leaky barnyardgrass requires that the barnyardgrass should be pulled out in time before heading, reduce the fields left behind by the barnyardgrass seeds, and avoid the situation that it is more difficult to kill year after year. If you really want to tell you the cure potion, it is obviously a lie, I believe that after understanding the reasons why barnyardgrass is so difficult to control and the main means to control barnyardgrass, you will have some understanding. If you think science can promote agriculture, speak science and be honest, please give it a compliment.