Organic fertilizer granular:Content of N (nitrogen) 16, K (K) 2, organic matter 20 ... , amino acids 8 -competitive price 1). Specification Content of N (nitrogen) 16, K (K) 2, organic matter 20 ... , amino acids 8 Content of N (nitrogen) 20.3, K (K) 3.7, organic ... capacity of the soil for fertilizer to improve agricultural production and the quality of services to overcome the ...