Foliage is dark green, leaflets of older leaves have convex curvature; profuse, almost black necrotic speckling between veins (often appearing first on under surfaces) coalesces into larger marginal and intervernal areas with occasional slight marginal ch
Foliage is dark green, leaflets of older leaves have convex curvature; profuse, almost black necrotic speckling between veins (often appearing first on under surfaces) coalesces into larger marginal and intervernal areas with occasional slight marginal ch
缺钾的马铃薯叶片:叶片暗绿，老叶的叶片表面弯曲，大量的黑色坏死斑纹出现在边缘与叶脉连接处和稍微叶边褪绿的叶脉间，逐渐枯萎坏死。