Organic And Inorganic Fertilizers Advantage And Disadvantage Pdf

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Here's the scoop on chemical and organic fertilizers

Synthetic vs. Organic Fertilizers by Jerry Gach. Organic Fertilizers are materials derived from plant and animal parts or residues. Plants require 13 nutrients. There are three primary macronutrients; nitrogen N , phosphorus P , and potassium K. These nutrients are used in significant amounts by growing plants, so they must be replaced periodically to sustain productivity.

Chemical Fertilizers

A fertilizer is a natural or synthetic, chemical-based substance containing one or more nutrients essential for enhancement of plant growth and soil fertility. Most of the chemical fertilizers used are NPK fertilizers which are rich in nitrogen N , phosphorous K , and potassium K. Fertilizers may also add secondary nutrients such as sulphur, magnesium, and calcium to the soil or growing media. Nitrogenous Fertilizers:. Nitrogenous fertilizers are the nitrogen-containing organic substances that supply the nutrition of nitrogen to the plants. They are of four types. Phosphatic Fertilizers:.

Organic options are a great way to go. Organic fertilizers such as manures, compost or bone meal are derived directly from plant or animal sources, according to Ross Penhallegon, horticulturist with the Oregon State University Extension Service. Inorganic fertilizers such as ammonium sulfate or ammonium phosphate are often called commercial or synthetic fertilizers because they go through a manufacturing process, although many of them come from naturally occurring mineral deposits. Inorganic fertilizers usually contain only a few nutrients — generally nitrogen, phosphorus, potassium, sulfur and sometimes micronutrients, either singly or in combination. These nutrients are in a form readily available to plants. However, since they are lost from the soil quickly, you may have to fertilize plants several times during the growing season unless you use a specially formulated, slow-release type. Some nutrients, such as nitrate, are quickly available for uptake by plant roots, Penhallegon said.

Depletion of soil fertility is a main problem to sustain agricultural production and productivity in many countries. The use of inorganic or organic fertilizer alone has both positive and negative effects on plant growth, nutrient availability and the soil. Organic fertilizer improves physical and biological activities of soil but they have comparatively low in nutrient content, so larger quantity is required for plant growth. However, inorganic fertilizer is usually immediately and fast containing all necessary nutrients that are directly accessible for plants. But continuous use of inorganic fertilizers alone causes soil organic matter: degradation, soil acidity and environmental pollution.


Although organic fertilizer can be more costly than synthetic, it can reduce the need for pesticides and the overall nitrogen, phosphorus and.


Advantages and Disadvantages of Using Organic Fertilizers

Here are 8 advantages and disadvantages to consider when using organic fertilizers in your program. Organic fertilizer is usually made from plant or animal waste — think manure or compost. They can also be highly processed products with a compost or manure base.

Soil Fertility and Crop Productivity 2. Fertilizer 2. Organic fertilizer 2. Advantages of Organic Fertilizer 2.

Introduction

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5 Response
  1. EugГЁne B.

    The main advantage that inorganic fertilizers have over organic fertilizers is that they can be used immediately to rescue dying plants.

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    A 4-year field trial with three treatments and three types of annually rotated vegetables was conducted in calcareous soil in a greenhouse using a phosphorus P fractionation method based on the inorganic P fraction classification system described by Jiang-Gu.

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