Effect of manure,fretilizer and polythene on …

Manure is organic matter used as fertilizer in agriculture. Manures improve the fertility of the soil by adding organic matter and lots of nutrients, such as nitrogen that is trapped by bacteria in the soil. Higher organisms then feed on the fungi and bacteria in a chain of life. Fertilizers provide essential nutrients to plants in form of soluble salt compounds, and directly affect plant growth. Soil amendments indirectly affect plants by improving the physical or chemical properties of soil. ... Fertilizers also add nutrients that are essential to plants in the form of soluble salt compounds. Manures contribute to the fertility of the soil by adding organic matter and nutrients, such as nitrogen, that are trapped by bacteria in the soil. Kinds of manure : Green manure, compost or vermicompost. Manure helps in enriching soil with nutrients and organic matter and thus, increases soil fertility. Some of these impacts include algae blooms causing the depletion of oxygen in surface waters, pathogens and nitrates in drinking water, and the emission of odors and gases into the air. Nutrients from manure and fertilizers enter lakes and streams through runoff and soil erosion.