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从椰子树的叶片症状(萎蔫、黄化和坏死)可以鉴定其根萎蔫病的状况。椰树茎干上的叶呈螺旋线排列。可从任一条螺旋线上的叶片症状计算出椰树根萎蔫病指数,即可准确诊断根病强度。
Leaf wilt symptoms (wilting, yellowing and necrosis) of coconut trees can identify the condition of root wilt disease. The leaves on the coconut stem are spirally arranged. The coco root wilt index can be calculated from the leaf symptoms on either spiral to accurately diagnose the root blight intensity.