Fig. 4From: Improving potassium use efficiency of sugarcane through the use of polyhalitePrincipal component analysis (PCA) of accumulated K, S, Ca and Cl uptake, accumulated shoot dry matter and agronomic efficiency of K, Ca and S in sugarcane treated with three K dosages (21, 42 and 63 mg K dm−3) and four distinct sources/formulations. AE agronomic efficiency, acc accumulatedBack to article page