Chapter 152： Pyrethrum and soil pesticides

It is midsummer, and European mosquitoes are also active. Marin was not afraid, because he had a thick skin. But, little Caesar was afraid that Angelie straightened her tears when she was bitten by mosquitoes.

Marin naturally remembered the plan to plant wormwood and smoke mosquitoes with wormwood in the tropical area, so he sent someone to the wormwood meadow to collect a lot of wormwood leaves, dried them and placed them in the master bedroom. Ignite the mosquito repellent. Although the smell is not good, but finally let the pink little Caesar avoid the invasion of mosquitoes.

To be honest, not many European mosquitoes. This is mainly because European agriculture is mainly dry land. And mosquitoes like to hide in paddy fields. Therefore, there are often more mosquitoes where rice is grown than where rice is not grown.

Later generations, Marin was not happy to return to his hometown in summer. Because the mosquitoes in my hometown are too big. Probably, those mosquitoes are well developed in the paddy fields with sufficient fertilizer. One by one, all are "Yao Ming" in the mosquito world, and it hurts everyone.

Europe has only dry land and no paddy fields, so there are naturally fewer mosquitoes. However, the East Frisian area, the swampy area, is just right for the survival of mosquitoes. Therefore, there are more mosquitoes than other areas. But compared with the real water village area, it is still much less. Under the smoke of wormwood, these mosquitoes cannot naturally become a climate.

After helping his son successfully expel the mosquitoes, Marin hugged Angela and began bragging, saying that he was "wise as a torch" and discovered how magical wormwood ...

Unexpectedly, Angela did not give face:

"Not just mosquito repellent, similar flowers and plants, we also have in Italy."

"Ah?" Marin's Newton couldn't stop blowing suddenly, and he was a little angry. Fortunately, the two of them are there, otherwise they will lose face.

"In my hometown in Italy, there is a kind of chrysanthemum, which is also very powerful. It is picked and dried and placed in the house, not only to repel mosquitoes, but also poison flies!

"Pyrethrum?" Marin reacted suddenly. Isn't it? Pyrethrum is one of the best plants in the plant to repel flies and mosquitoes. The most important thing is that its toxicity is only for small insects such as flies and mosquitoes, but it is not toxic to large mammals such as humans.

Moreover, Marin remembered that the high school biology teacher of the previous life also said that pyrethrum is a natural plant pesticide. Dry the pyrethrum, grind it into a powder, add some water, and get a little soap to make a suspension, so that you can spray it directly onto the crop.

This pyrethrum natural plant pesticide can effectively control diseases and insect pests such as aphids, leaf chan, cabbage worms, and golden flower insects, and is very beneficial to the growth of crops.

However, the effects of the biology teacher of Marin's previous life did not attract farmers. Why? High cost ...

Pyrethrum is a European gadget that originated in Europe. Moreover, it takes a lot of land to plant it. It also requires picking chrysanthemums and drying and powdering. It is very troublesome and costly. At least, it is much higher than chemical pesticides produced in factories purchased from agricultural companies. The common people are careful, and ghosts do the kind of thankless things. So, even if pyrethrum pesticides are environmentally safe? High cost, everything is free ...

However, Marin is now in the 16th century. In this era, there were no chemical pesticides. And Marin is not a chemical major, and he does not understand the configuration of chemical pesticides. Under such circumstances, plant pesticides such as pyrethrum are very useful ...

Marin remembers that the biology teacher who was an environmental protection activist in the previous life also said that pyrethrum, tobacco and roe are the "three major plant pesticides" in the world.

Of course, fish vines are produced in tropical and subtropical regions of East and Southeast Asia, so Marin does not have to think about it. Even if the seeds are introduced, they cannot be grown locally.

And tobacco, which is still in America at this time, needs to spend manpower to find, and do not have to think. However, in the future, it is possible to order a variety of tobacco. On the one hand, it can be used as a cigarette, on the other hand, it can be used as a pesticide in water.

As for pyrethrums, this stuff is native to Europe and can be introduced completely and then planted in large areas.

Looks like, wormwood is lit and can only repel mosquitoes, while pyrethrum can kill mosquitoes and flies. After Marlin left thinking about it, he still thought it was safer to use wormwood to repel mosquitoes. At least, the toxin is not as strong as pyrethrum. However, pyrethrum also needs to be planted in large areas. It is mainly used to configure pesticides and control pests.

In fact, in the past few years, after introducing potash and phosphate fertilizers, and using salt water for seed selection, Marin should theoretically be able to reach more than 600 pounds per mu.

Unfortunately, there are large and small diseases and insect pests every year, which ultimately makes the yield per mu reach only about 400 pounds. If there are enough pesticides, the yield per mu will inevitably reach five or six hundred pounds. By then, Marin's income will increase by half ...

To this end, Malinte took out 10,000 acres of land, intended to be used for concentrated cultivation of pyrethrum. In addition, 10,000 acres of land were also used for planting wormwood ...

Wormwood can be used as a traditional Chinese medicine with multiple medicinal effects. At the same time, it can also be used as a weak plant pesticide and can also be used to repel mosquitoes.

As for pyrethrum, it goes without saying that it is highly toxic and is cultivated to be used as a pesticide. When the time comes, there are enough plant pesticides made by pyrethrum. Wherever diseases and pests are damaged, spray wherever ...

After making plans, Marin approached Kohler and asked him to arrange manpower to go all over Europe to collect pyrethrum seeds for the planting of 10,000 acres.

According to Angela, pyrethrum is very common in Europe, and it can be found everywhere in Italy. However, the northern part of Germany is not very common.

So, Marin asked Kohler to send people to Italy to collect a lot of pyrethrum seeds for local cultivation. In short, we must find enough seeds to plant 10,000 acres of land.

As for wormwood planting, Marin felt that there should not be enough to plant 10,000 mu of seeds. Because after the successful cultivation in the glass greenhouse, Marin only let people plant a few acres of wormwood. Even if all the seeds are collected, it can only be enough to plant hundreds of acres ~ www.novelhall.com ~ However, this is not a big problem. As long as a few more rounds of planting, it will be enough to plant 10,000 acres of seeds ...

Speaking of this pesticide, Marin remembered the earliest pesticide—Bordeaux mixture and lime sulfur mixture.

It's just that Bordeaux liquid is copper sulfate. Now that copper is so expensive, Bordeaux liquid is obviously not cheap. Therefore, even if Marin knew Bordeaux mixture, he would not do it. Because the cost is too high ...

Is a stone sulfur mixture, you can do it, and Mashan can do it. Because the lime sulfur mixture is made of quicklime and sulfur. Quicklime and sulfur are very common in Europe, and the price is cheap, but it is a very good inorganic pesticide.

In addition, Marin remembered that the grass and gray water also had a certain insecticidal effect, and it was also a good potassium fertilizer ...

Furthermore, the biogas liquid after fermentation in the biogas digester is also a very high-quality fertilizer, and also has a strong insecticidal effect ...

Moreover, the biogas liquid can also be used to soak the seeds, because it has strong fertility and a certain insecticidal effect. The seeds soaked in the biogas liquid not only have good growth, easy to germinate, but also have been killed once and poisoned, making the seeds plant More healthy and easy to grow after going on ...

In fact, the seeds produced by the seed companies of later generations were soaked in a specific nutrient solution. These nutrient solutions not only have sufficient nutrients, but also kill the germs in the seeds. In this way, the seeds will grow healthier and easier to grow. If you use ordinary grains as seeds, the growth is not so good because it may carry some germs and nutritional problems ...

Marin became more and more excited, and more and more excited, and wrote down all the knowledge ignored in the previous life with a small book. Of course, Chinese characters are used. Even if they are stolen, no one in Europe can understand ...