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May 09, 1963 - Put in the gas-room'.. were many young runner-bean-scions by the teacher of the public School for Horticulture in Stuttgart-Hohenheim. By the help of a new produced instrument, they try in the carefully caulked half of the greenhouse not only to supply the plants coming from the soil with organic and mineral artificial manure, but also to manure the plants of the air with CO2 gas. A proportinate simple burner burns fluid-gas, which is giving in the greenhouses by carbonic acid, has engaged the gardeners all over the world since a lot of years. But till now it has been not possible to produce an instrument, which is working not only correct, but also very sheap. The ready Co2 could be bought one the market, but this would be too expensive and would therefore be too unprofitable for the gardenings. The teachers of the test-gardening are hoping that the gased runner-beans will become essential bigger and that the beans also will come up more quickly than the plants in the other part of the greenhouse, which is working conventional

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