The Role of Organic Fertilizer on The Growth of Ornamental Plants (A Review)

Abstract

Increasing plant productivity requires great attention to the soil and the nutrients it contains for the plant. Therefore, organic fertilizers have been used as an alternative to chemical fertilizers in improve the properties of the soil. Organic fertilizers are defined as fertilizers prepared from plant remains and animal wastes. There are two types of organic fertilizers, the first type is natural organic fertilizer used in very large quantities, but its nutrient content is low, such as animal manure, garbage compost, and vermicompost. The second type is concentrated organic fertilizer and contains a high percentage of plant nutrients, such as humic acid fertilizer, the most important characteristic of organic fertilizers is their conversion into humus in the soil by microorganisms, therefore they are applied to all types of soils, contributing to reducing the acidity of the soil improving its porosity, and increasing the soil’s ability to retain water. The slow decomposition also distinguishes them in providing nutrients to plants for a period of time.  long period of time.