Description:02 22 31 00 Less problem for greenhouses. Close-up farmers who harvest vegetables. Plantation of salad. Close-up salad. Close-up farmer who looks at thermometer. Automatic irrigation, farmer opens gate, and irrigation starts. This system of plantation is very ingenious and allows all the same to save and to control plantations. Seen on row of salads, lettuces. Greenhouses more ingenious because warms with sun. Ecological agriculture.