... can fix nitrogen,plant short and small ,easy infect disease,fruit &melon with black heart,Cereal with lowfructification rate,can not form ... death,Tea bud blight disease ,rape ,apple,will no fruit,Peach,orange fruit deformity,no sugar.8.Magnesium :Old leaf become yellow ... ,photosynthesis weaken,Fruit crack,bad color.Our capability :→ Existing Rich Formula for ...