dismantling the circular metal grid covering the roots of the tree

dismantling circular metal grid covering roots tree square assessment soil quality irrigation drip hoses sampling chemical analysis laboratory salinization analysis black changing chemical circle control cover dendrology dig digging dirt dismantling drop expertise fertilizer foil garden gardener geometric grate green hand holding hole hose irrigation laboratory minerals monitoring open pedology phytopatology pile pipe plastic profile reconstruction root rotten salt salting sample soil spade system tarpaulin tree trunk water worker