Farmers, how much do you know about the drug damage?

The problem of phytotoxicity, the headache of agricultural capitalists; the inevitable problem of phytotoxicity and agricultural capital. I have been engaged in the promotion of grassroots agricultural technology for more than 30 years. I have experienced the troubles and pains of phytotoxicity. I have also witnessed the peasants’ squandering and escaping from each other. They also understand that some farmers are not guilty of phytotoxicity. With tears. Farmers, how much do you know about the drug damage? Now I may wish to share some, perhaps some inspiration and help for everyone.

1. Two old varieties of fungicides have new problems.

This is the reason why I have been cautious in promoting agricultural technology and farming qualifications throughout my life. That was the case of two phytotoxics in 1996 and 1999 - an unexpected phytotoxic accident. One time, a farmer with a long green pepper came to me one day, reflecting that there was yellow powder on the upper leaves of green pepper and it grew slowly. To be honest, I really encountered this situation at the time. I wanted to use copper sulphate and a kind of fertilizer called Fengben Liquid Fertilizer . I remembered his name and said: I went to see it in a week. See the effect. But the next day the problem came, and the lower part of the green pepper dropped the leaves. At that time, I thought that the farmers had increased the concentration or mixed things. The farmers said that they were very firm and that they were all according to me. I admitted that it was my own problem. All the consequences were my responsibilities, and I immediately played 3 meters in his other shed, just in case I went to another village and played a little. The next day I saw the second point, and then went to his house. He said that you went to see it. I said that I should not watch it. I know, now I will negotiate how much I will lose. It is because my responsibility is borne by me, so he still buys my medicine so far. The peers will definitely ask why something is going on? There is only one reason: that foliar fertilizer must be acidic. The lesson is that copper sulfate is mixed or careful!

Another time was in the spring of 1999. There were more stevia in our region. After the rain, the spot blight was serious. Please ask the city plant protection station to use mancozeb. So I started the radio conference and the agricultural company sold the medicine. The incident came again. There was a farmer who came to my house to look for me. According to the radio propaganda medicine, stevia had phytotoxicity. What should I do? What can I do? Of course, I would like to ask the teacher at the city station for a consultation! When we look at the field, we are relieved. This family of stevia grows five small pieces, the same medicine, only two small pieces. There are phytotoxics, others are not. It should be the responsibility of farmers in the common sense. If it is a drug problem, there should be phytotoxicity. This common sense should be recognized by everyone. But in fact, there is no responsibility for farmers. Why is it? The phytotoxic land is a new variety, and this new variety is sensitive to mancozeb. You said that there are so many varieties of crops now, can we test them one by one, and we can only tell us whether we want to promote or do agricultural resources, we still have to be cautious and cautious!

2, the side effects of fungicides should not be underestimated, can not see the farmers clearly can not see, the dark wounds are heavy and heavy.

Bactericides can be said to have contributed to disease prevention. In many years of production practice, some fungicides have been found to have side effects (phytotoxicity). Listed below:

Chlorobromide isocyanuric acid: This fungicide is effective against fungi, bacteria and viruses, including some effects on blight. However, if it is used for rooting and disease prevention in the green pepper seedling stage or in the green pepper seedling stage, it will have a certain inhibitory effect on green pepper. Therefore, this bactericide should not be oversprayed in the green pepper seedling stage, and should not be used for green pepper rooting and disease prevention at low temperature.

Oxazol: This fungicide has a good control effect on crop leaf spot, including root disease. Use at normal and normal temperatures, safe for green peppers. However, over-use, low-temperature use, and green pepper seedlings have a significant inhibitory effect on the growth of green peppers. Therefore, it should be used correctly in the above three cases.

Fluorosilazole: This fungicide has a prominent effect on green pepper powdery mildew and brown spot. Moreover, the bactericide can be sprayed from the top to the bottom of the crop, and has a certain effect on the root disease of the green pepper. However, if it is used at a concentration lower than 8000 times, it has a certain inhibitory effect on the growth of green pepper. For this characteristic, it can be used for chemical control when green peppers and watermelons are prolonged. Therefore, flusilazole should not be used in the low temperature stage of green pepper, and should not be used excessively. It is best to use a prolonged foliar fertilizer together when using it.

Propiconazole: The fungicide mechanism of action has protection, treatment and eradication. It has a good control effect on green pepper powdery mildew and leaf spot disease. At the same time, the green pepper has the effect of protecting green and preventing decay and promoting green pepper sitting. However, the fungicide has a significant inhibitory effect on the growth of green pepper. Therefore, the use of green peppers should be used in the growth period of green peppers. The concentration of 25% ridoprene should not be less than 2500 times. It is best to use it to promote the use of obvious foliar fertilizer. Using this feature, it can be used for greenhouse green pepper control, application concentration, greenhouse spring pepper 2000-2500 times, greenhouse autumn pepper 800-1500 times. The control on green pepper has a long period of control, usually about 10 days, which has no adverse effect on the flowering result of green pepper, and also has obvious effect of promoting fruit setting.

3, improper use of crop growth regulators, medicinal damage is not good.

Sodium nitrophenolate has the functions of promoting roots, maintaining flowers and expanding fruit, and is widely used. However, in practice, I have encountered two phytotoxics. First, after using the spray on the green pepper, I have to wait for the liquid to dry after the shed, especially if the rain does not open in the next day, the green pepper leaves will droop, although the effect is not big, but It will definitely be scared. Second, it is not suitable for use in watermelons, especially high temperature can not be used, but can not be used for watermelon seedling rooting, otherwise the watermelon leaves are all drooping.

More than a long time can not be used for green pepper control, otherwise green pepper will inevitably bear fruit.

Gibberellin should not be used alone on green peppers, otherwise the leaves are thin, the stems are long, and it is difficult to sit on the fruit.

The pollination concentration of tomato with 2,4-D should be suitable, and the fruit type is too high; the pollination operation should be careful. If it is sprayed on the stem and the leaves, the leaf deformity will be caused, which is not easy to correct.

4. Herbicide phytotoxicity is the most common, and farmers can not harm themselves and harm others.

The harm to the squat can not be underestimated. I have met farmers, and it is already more than a decade ago. In order not to sell the backlog of more than a dozen packs of wheatgrass (Methanesulfuron, which was banned at the time), the result was a loss of two dollars. At present, the most common herbicides are corn herbicides, such as atrazine, nicosulfuron, etc., as follows, inoculation of greenhouse vegetables, it will show that the yellowing of the crop in the first few months is not long, there is no medicine to save. In addition, if the corn herbicide uses a broad-leaf crop within the range of 100 meters containing the 2,4-D component, especially the cotton will suffer from cockroaches, and the upper leaves are all poisoned and the flower buds are deformed and cannot be corrected. In addition, greenhouse green pepper herbicide can not be used wrong, if acetochlor is used, the upper heart of green pepper will turn black.

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(Source: Good Agricultural Resources)