Question

the mineral fertilizer has which 3 elements.....

Answer 1

three secondary macronutrients: calcium (Ca), magnesium (Mg), and sulfur (S); micronutrients: copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc(Zn), boron (B), and of occasional significance there are silicon (Si), cobalt (Co), and vanadium (V) plus rare mineral catalysts.

Answer 2

Hi friend , 
Hope it helps 

Besides the carbon, hydrogen and oxygen that plants get from water and from the atmosphere, there are 13 other chemical elements essential for plant growth. Plants generally get these from the soil. However, soils can vary dramatically in their nutrient content, so farmers and gardeners often add fertilizers to ensure good plant growth and to enhance flower, fruit and vegetable production. In addition to nitrogen, phosphorous and potassium -- the three primary nutrients -- scientists recognize two other plant nutrient categories: secondary nutrients and micronutrients.