A light-intensity controlled, mist system with water and power backup for rooting cuttings of agroforestry species

Rooting of cuttings is an important part of many components of agroforestry and horticultural research. A technique for rooting cuttings in which the frequency between misting is controlled by environmental sensors is reported here. In developing countries variability in water pressure (or lack thereof) and voltage levels for mist systems often greatly comprises research involved with rooting of cuttings. These problems were overcome with an electrical system comprised of a permanently charged truck battery with a DC mist controller and a high pressure pump. An 800 l ground level storage tank with float valve provided a water reservoir. This system was capable of operating a 2.2 m by 2.2 m, high-pressure, mist bench for about 8 h completely independent of water and electricity. As an added advantage, the mist frequency was proportional to light intensity (and air temperature), thus avoiding over watering.