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In the early 1900s, William Gericke first had the idea of soilless gardening. Today we call it Hydroponics. You can grow large amounts of crops without any soil at all! Very often, ground up coconut shells are used. What you do need is a good ratio of nutrients. It may be grown under many climatic conditions when it’s in a greenhouse atmosphere. You can grow cucumbers, tomatoes etc. Since it’s in an enclosed environment, no pesticides are needed.The largest hydroponic farm is in Montreal! It’s on top of a buildingOne way to control insects is to use predatory insects, for example ladybugs. Video 2 Agriculture is a battle constantly fighting against the 10 000 insect species, 8 000 or so fungi, and the 2 000 weeds that compete our food supply. But not all 10 000 species of insects are bad, because as mentioned earlier, some insects are used as predatory insects to keep away other insects. 1.Fungus oApple scab: Common problem that apple growers face. It’s a fungus, but it’s just a cosmetic problem. Looks pretty shit so people don’t want to buy them even though there’s nothing really wrong with them. To avoid these problems, farmers resort to agrochemicals to eliminate the scab
Malka A-R oBotrytis Fruit Rot Strawberries with the white and brown spots. People really don’t want to buy that.oStem Rust: Not only is it a cosmetic problem, but also destroys the crop. oBlack Spot: Roses, and other flowers, can sometimes be affected by the black spot fungus. 2.Weeds: In between the stocks of crop, these weeds pop up. They suck nutrients from the soil, which means that there are fewer nutrients left for the crops that you want. On top of all this BS, there are also all sorts of insects all over the crops 3.Insects oCorn Borer: Invades corn and chills in there oRats and mice: Hang out around the large piles of grain. oNematodes: Destroy the roots of apple orchards, for example How can we control the insects? Sulfur: One of the first chemicals used. Occurs in nature in its elemental form. Sulfur can be mined so it was known to the ancients. When you burn sulfur, it produces Sulfur dioxide (SO2). SO2 kills many insects and fungi. The ancient romans were aware of this, and it was one of the first insecticides ever used. You want to be careful about inhaling SO2: it has a very chocking odor but it’s possible to use it under proper conditions Tabaco plant: Produces nicotine. The plant evolved to protect itself against predators and that’s why there’s nicotine in there. Nicotine is a natural insecticide. If you inhale nicotine in a
Malka A-R combustible version that goes directly into the lungs, it’s really bad.Chemist started combining all these insecticide compounds to create synthetic pesticides. Synthetic Pesticides Copper acetoarsenate : -Synthetic Pesticide; made in a laboratory.