If the use of herbicides is unreasonable, or if they are not used according to the efficacy period, they will be laborious and not even worth the loss.
No, the author is deeply touched because I made such a super mistake.
Half a month ago, I bought a bottle of nicosulfuron from a farmer's shop in the town. After I went home, I sprayed it with a sprayer. Who knows, for half a month, I saw that the weeds withered, that is, I didn’t die. So, when I was flustered, I began to pull the grass into the ground, and it took four or five days to pull the weeds out.
At noon today, due to the large weeds in another plot, I went to the farmer's shop to buy herbicides. When I talked about this, I was told that the efficacy of nicosulfuron was very long lasting. It started to take effect after half a month, that is to say, weeds were only withered in half a month, and death began to appear half a month later. And it is because I don't understand these pharmacology, and the temper is more impetuous, which leads to the phenomenon of laborious efforts.
I bought a bottle of Acacia from the farmer's shop. I went to Tianjin, and when I left, I also specifically asked about the time of killing the grass. Only then did I know that the herbicide could work for 7-10 days and kill the weeds.
To this end, the use of herbicides must understand its pharmacology and onset time, because some herbicides are roots first, some herbicides are first defoliated, and some herbicides are roots and leaves. Kill, and some are still specializing in grass, and some are still small and small. Only knowing these pharmacological effects, knowing the onset time of herbicides, will be targeted, otherwise it will not be worth the loss, and it will not work well!
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