Bionova N 27 Nitrogen Mineral Additive, 20 LiterNitrogen 27% Food grade minerals Concentration 1: 2000 NPK 27 0 0 Nitrogen deficiency agent Bionova N 27 is a food grade mineral fertilizer 27% nitrogen. Bionova N 27 must be used when a deficiency in nitrogen occurs or when you want to develop an advanced vegetative growth. Bionova N 27 is free of chlorides. Plants directly absorb all food grade minerals which gives an optimal control of the cultivation. What is Bionova N 27? The importance of