These are sold as concentrated powders or concentrated liquids that you dilute with water. Liquid fertilizers are absorbed through the leaves, stems and branches, as well as through the roots. They can be sprayed or sprinkled on the vegetables.
Different kinds of fertilizers are prepared for different soil conditions and vegetables. Some manufacturers offer as many as twelve different formulations. Most are composed of nitrogen, phosphorus and potassium, with trace elements.
Vegetable fertilizer formulations are generally based on the following.-nitrogen: which promotes leaf growth, stimul vegetative development for cabbage, lettuce, spinach, and collards.
Phosphorus: which promotes strong root growth, hastens maturity, and aids in seed and fruit development
Potassium (potash): is necessary for new cell division in roots and buds and is important to fruit quality. Corn ears sometimes don't fill out when a plant is low in potash. Potash is also important to the ripening of tomatoes and for the development of root crops such as beans and potatoes.
The numbers you find on a fertilizer container refer to the percentage of nitrogen (N), phosphorus (P) and potassium (K) found in that particular fertilizer (in that order). A 5-10-5 fertilizer contains 5 percent nitrogen, 10 percent phosphorus and 5 percent potassium. In a 100-pound bag of this fertilizer there would be 5 pounds of nitrogen, 10 pounds of phosphorus, and
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