... CarbonC55-60NitrogenN2-3PhosphorousP0.2-0.4PotassiumK2.5-3CalciumCa0.8-1MagnesiumMg0.3-0.5IronFe0.4-0.6AluminiumAl<0.1SiliconSi4-5 N/P ... original, un-opened package, BBP NO.1 is stable for 3 yearsApplied plants:Grape,peech,cucumber,strawberry,tomato,fruittrees,soybean,beans ... experimentation. www.seekfertilizer.com www.skwto.en.alibaba.com Natural fertilizer for corn