Pressure Regulation is used to reduce supply line pressure to be within manufacturers recommended operating pressure for downstream components. Check valves are used to prevent damage to the system that could otherwise result in equipment failure and lateral line breaks. When unnoticed, these failures result in significant water waste.
Optimum moisture level in the soil near the root zone of the crop is critical to agriculture and plantation crops. Drip irrigation is frequent application of water directly on or below the soil surface near the root zone of plants. Drip irrigation is one of the irrigation methods which can help to increase irrigation water potential and crop yield.
Hemp grows best on a loose, well-aerated loam soil with high fertility and abundant organic matter, with a pH of 6.0-7.5. Well-drained or tiled clay soils can be used, but poorly-drained clay or poorly structured soils often results in establishment failures, as seedling and young plants are prone to damping-off. Loam is a classification given to soil that contains relatively balanced amounts of sand, silt and clay. Loam soils typically contain less than 52 percent sand, 28 to 50 percent silt, and between 7 and 20 percent clay. Classification as a loam soil has nothing to do with the organic material it contains or where it is found. A mixture that contains almost equal amounts of silt, sand and clay is referred to simply as loam.
For states which define hemp (< 0.3% THC) as distinct from marijuana, the USA Agriculture Act of 2014 which is found under US Law at 7 USC §5940 et seq allows departments of agriculture or universities to cultivate hemp as part of a research pilot program. As of 2017, at least 39 US universities and dozens of researchers have begun studying hemp, yet guidance on top research priorities are lacking.