This article throws light upon the top three nitrogenous fertilizers applied to soil. The nitrogenous fertilizers are: 1. Urea 2. Ammonium Sulphate 3. Calcium Ammonium Nitrate. Nitrogenous Fertilizer # 1. Urea: Manufacture: Ammonia reacts with carbon dioxide under a pressure of about 400 atmospheres, at a temperature of about 160 to 200°C to form urea. Properties: Urea is a white [...]
This article will help you to differentiate between surface soil and sub-soil. Difference # Surface Soil: 1. Surface soil is defined as the immediate uppermost loose layer of the earth consisting of organic matter and soil organisms suitable for plant growth. It is generally called furrow slice soil layer (0-15 cm depth) and fertile soil. 2. It is completely weathered. [...]
This article throws light upon the ten important minerals found in soil. The minerals are: 1. Haematite 2. Limonite or Bog Iron 3. Goethite 4. Gibbsite 5. Carbonate Group 6. Calcite 7. Dolomite 8. Siderite 9. Sulphate Group 10. Gypsum. Mineral # 1. Haematite: Fe2O3: It varies in colour from red to blackish red and has a reddish streak. It [...]