Fertiliser is generally defined as "any material, organic or inorganic, natural or synthetic, which supplies one or more of the chemical elements required for the plant growth". Primary nutrients are normally supplied through chemical fertilisers. They are chemical compounds containing one or more of the primary nutrients and are generally produced by chemical reactions. Whatever may be the chemical compounds, its most important ingredient for plant growth is the nutrient content.
There are four big fertilizer plants in Orissa. The first plant located at Rourkela in Sundergarh District is Public Sector Undertaking. This plant utilizes the by products and surplus gas from the Rourkela Steel Plant.
The second fertilizer plant - The Orissa Fertilizer and Chemical Limited is located near Kalunga. The capacity of this fertilizer plant is 45,000 tones per annum.
The third fertilizer plant is located at Talcher in Dhenkanal District. It produces 495,000 tonnes of Urea and 228,000 tonnes of Nitrogen.
The fourth fertilizer plant - The Indian Farmers and Fertilizers Corporation Ltd. is located at Baragarh. It produces mixed fertilizer.
A new phosphate fertilizer complex at Paradeep, a joint venture of Island Republic of Nauru and Government of India has been built. It produces Di-Ammonium Phosphate with a capacity of 2,400 tones per day in first phase. Its second phase also started and produces Phosphoric Acid and Phosphorus Pentaoxide.
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