Any buried flexible piping should be considered with caution due to the potential for crimping by tree roots. Drip systems require one lateral line per tree row, however the spacing between the rows for the micro-spray sprinkler system depends on the tree spacing and application uniformity desired. For example, a plantation with a 10 foot X 10 foot tree spacing may have a lateral line every other tree row. The spacing within a tree row depends on the tree spacing down the row, flow rate of the emitters or micro-spray sprinklers, and the desired application rate. Operation and Maintenance.
Loamy soils are best.
Soil depth should be at least three feet, with four to six feet preferred. Good root development is needed for effectjve wastewater uptake and to reduce the potential for wind throw damage. Extra caution should be taken with very sandy or gravely soils due to the potential for excessive leaching. It is also important to identify adjacent surface waters and communities that could be affected. Hybrid Poplar Suitability.