Fig. 1From: Efficiency and effectiveness of vitamin C-substrate organo-mineral straight fertilizer in lettuce (Lactuca sativa L.)The characteristics of the fertilizers on the third day after dissolving in water. Commonly used fertilizers (a, a′) used in Korea have sediments but not AGH-Ringer (b, b′). a, b Powder type and a′, b′ dissolved type. Arrow indicates the sediment in the control fertilizer (a′)Back to article page