Micronutrients needed in minute quantities include iron, boron, manganese, copper, zinc, molybdenum and chlorine. Urea is a synthetic organic fertilizer. Cottonseed is good for acid-loving plants such as azaleas, camellias and rhododendrons. Blood meal and fish emulsion are nitrogen rich and can burn plants if used excessively. You'll find some organic fertilizers are enriched to provide more nutrients.
Organic fertilizers improve the soil's condition, allowing water and air to move through the soil.
They also help sandy soils retain moisture. Lots of nitrogen and potassium is returned to a lawn when clippings are left to decompose naturally. Synthetic fertilizers - Available in dry or liquid forms, these manufactured substances release nutrients quickly. A WSN, or water-soluble nitrogen, fertilizer, dissolves quickly. Fertilizer with pesticides and herbicides - These fertilizers are made for convenience but the application may not coincide with the problem.