It was midsummer, and European mosquitoes were also very active. Marin was not afraid, but he was thick in skin or flesh. However, Little Caesar was afraid. He was bitten by the mosquitoes, and Angela burst into tears.
Marin naturally remembered the previous plan to plant mugwort in tropical areas and smoke mosquitoes with mugwort. So he sent someone to the mugwort field, collected a lot of mugwort leaves, dried them, and placed them on the master bedroom to ignite them to repel mosquitoes. Although the smell was not good, he finally allowed the pink little Caesar to avoid the invasion of mosquitoes.
To be honest, there are not many mosquitoes in Europe. This is mainly because European agriculture is mainly drylands. Mosquitoes like to hide in paddy fields the most. Therefore, there are often more mosquitoes in places where rice is not grown.
In later generations, Marin was not very happy to go back to his hometown in summer because the mosquitoes in his hometown were too big. Perhaps, those mosquitoes developed well in rice fields with abundant fertilizers. Each one was the "Yao Ming" in the mosquito world, which hurts life.
In Europe, there are only dry land and no paddy fields, so there are naturally fewer mosquitoes. However, the East Friesland region and many swamps are very suitable for the survival of mosquitoes. Therefore, there are more mosquitoes here than other areas. However, compared with the real water town areas, there are still much fewer mosquitoes. Under the smoke of mugwort, these mosquitoes naturally cannot become a climate.
After helping his son successfully drive out the invasion of mosquitoes, Marin hugged Angela and began to brag, saying that he had "a wise eye like a torch" and discovered how magical mugwort...
Unexpectedly, Angela was very disrespectful:
"Isn't it just a mosquito repellent? We have similar flowers and plants in Italy, too."
"Ah?" Marin's Newcomer couldn't brag anymore and was a little angry. Fortunately, they were the two of them, otherwise they would have to lose face.
"In my hometown in Italy, there is a kind of chrysanthemum, which is also very powerful. Pick it and dry it and put it in the house. It can not only repel mosquitoes, but also poison flies!"
"Pythora?" Marin suddenly reacted. Isn't it? Pythora is one of the best plants to remove flies and mosquitoes in plants. The most important thing is that its toxicity is only targeted at small insects such as flies and mosquitoes, but it is not toxic to large mammals like humans.
Moreover, Marin remembered that the high school biology teacher in his previous life also said that pyrethra is a natural plant pesticide. Dried pyrethra, grind it into powder, add some water, and make some soap to make suspension, so that you can spray it directly on the crop.
This natural plant pesticide of pyrethrum can effectively prevent and control pests and diseases such as aphids, yeast, yeast, yeast, and yeast, which is very beneficial for the growth of crops.
However, the effects mentioned by Malin's biology teacher in his previous life did not attract farmers. Why? The cost is high...
Pythorax is a foreign thing native to Europe. Moreover, it requires a large area of ​​land to plant, pick chrysanthemums, dry and make powder, which is very troublesome and high cost. At least, it is much higher than the chemical pesticides produced in factories purchased from agricultural companies. People are very careful in their calculations, and they do such thankless things. So, even if pythorax pesticides are environmentally friendly and safe? The cost is high, and everything is free from discussion...
However, Marin has now traveled to the 16th century. In this era, there were no chemical pesticides. Marin is not a professional in chemistry and does not understand the configuration of chemical pesticides. In this case, plant-based pesticides such as pyrethrum seem very useful...
Marin remembers that the biology teacher who was an active environmentalist in his previous life also said that pyrethra, tobacco and vines are the world's "three major plant pesticides".
Of course, vines are produced in tropical and subtropical areas of East and Southeast Asia, so Marin doesn’t need to be thought about. Even if they are introduced, they cannot be planted locally.
Tobacco is still in the Americas now and it requires manpower to find it, so there is no need to think about it. However, in the future, you can use it as a variety of tobacco, on the one hand, it can be used as a cigarette, and on the other hand, it can be used as a pesticide.
As for pyrethra, this thing is native to Europe and can be introduced and then planted on a large scale.
It seems that if the mugwort leaves are lit, they can only repel mosquitoes, while pyrethra can kill mosquitoes and flies. After thinking about it, Marin still felt that using mugwort leaves to repel mosquitoes is safer. At least, the toxins are not as good as pyrethra. However, pyrethra also needs to be planted on a large scale. It is mainly used to configure pesticides to prevent and control pests.
In fact, in recent years, after Marin introduced potassium and phosphorus fertilizers, and used saline to select seeds, the yield per mu should theoretically reach more than 600 pounds.
Unfortunately, there are pests and diseases of all sizes every year, which ultimately makes the yield per mu only reach 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, Marin specially took out 10,000 acres of land, intending to use it for centralized planting of pyrethra. In addition, he also took out 10,000 acres of land for planting mugwort...
Mugwort can be used as a traditional Chinese medicine and has 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 pyrethra, it goes without saying that it is highly toxic and is cultivated as a pesticide. At that time, there are enough plant pesticides made by pyrethra, and spray them wherever there are diseases and pests...
After making plans, Marin asked Kohler to arrange manpower to go to all parts of Europe to collect seeds of pyrethra for the planting of 10,000 acres of land.
According to Angela, pyrethrum is very common in Europe and can be seen everywhere in many places in Italy. However, it is not very common in northern Germany.
So Marin asked Kohler to send people to Italy to collect more seeds from pyrethra for local planting. In short, you must find enough seeds to plant 10,000 acres of land.
As for mugwort planting, Malin felt that there should not be enough to plant 10,000 mu of seeds. Because, after the successful cultivation of the glass greenhouse, Malin only allowed people to plant a few acres of mugwort on the ground. Even if all the seeds were collected, it would be only enough to plant hundreds of acres of land.
However, this is not a big problem. As long as you plant a few rounds of multiple plants, there will be enough seeds to plant 10,000 acres of land...
Speaking of this pesticide, Marin remembered the earliest pesticides - Bordeaux liquid and lime sulfur mixture.
However, Bordeaux liquid is copper sulfate. Nowadays, copper is so expensive, so Bordeaux liquid obviously won’t be cheap. Therefore, even if Marin knows Bordeaux liquid, he will not do it. Because the cost is too high...
However, stone sulfur mixture can be used once, and Mashan can be used. Because stone sulfur mixture is made of quicklime and sulfur. Quicklime and sulfur are very common in Europe and are cheap, so it is a good inorganic pesticide.
In addition, Marin also remembered that wood ash water also seems to have certain insecticidal effects, and it is also a good potassium fertilizer...
In addition, the biogas liquid after fermentation of the biogas tank is also a very high-quality fertilizer and has a strong insecticidal effect...
Moreover, biogas liquid can also be used to soak seeds because it has strong fertility and certain insecticidal effects. Seeds soaked by biogas liquid not only grow well and are easy to germinate, but are also poisoned, making the seeds healthier and easier to grow after planting...
In fact, the seeds produced by seed companies in later generations were soaked in specific nutrient solutions. These nutrient solutions not only contain sufficient nutrients, but also kill bacteria in the seeds. In this way, the seeds will be healthier and easier to grow after they are planted. If ordinary grain particles are used as seeds, they will not grow so well because they may carry some bacteria and nutritional problems...
Chapter completed!