Diapositiva PPT
The “Conventional Drip Irrigation” wet onion...
…has just the shown configuration. A flow generally greater than 2 l/h dripping for many hours, generates an extended vertical
saturated core into which percolation takes place. This kind of core develops an “onion” that is vertically oriented, with a relatively poor capillar diffussion component. Instead,
The “Ultra Low Drip Irrigation” method...
…applying less than 0.5 l/h/m during all day, adapts to the water intake capacity of the soil. So, capillarity becomes the main way of water movement, saturated core is
small and vertical percolation doesn’t take place any more. Only the upper, aireated soil layer is maintained wet. But...