Fig. 3From: Toward the replacement of conventional fertilizer with polyhalite in eastern China to improve peanut growth and soil qualityAccumulation of K, Ca and Mg in organs of peanut. a K accumulation, b Ca accumulation, c Mg accumulation. K accumulation = the organ biomass × the organ K content. Ca or Mg accumulation was calculated in the same way as K accumulationBack to article page