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Investigating the optimum concentration of a solution of Urea [(NH2)2CO] and Ammonium Nitrate [(NH4NO3] nutrition solution (as inorganic fertilisers) required for optimum plant growth and a sustained yield of rice.

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Introduction

Investigating the optimum concentration of a solution of Urea [(NH2)2CO] and Ammonium Nitrate [(NH4NO3] nutrition solution (as inorganic fertilisers) required for optimum plant growth and a sustained yield of rice. Introduction: Hydroponics is the growing of plants in water instead of soil. For most effective results, the water must be enriched with nutrients and sometimes requires to be oxygenated. For a plant to receive a well balanced diet, everything in the soil must be in perfect balance. Rarely, can you find such ideal conditions in soil due to contamination and biological imbalances. But with hydroponics, water is enriched with these very same nutrient salts, creating a hydroponic nutrient solution that is perfectly balanced. Also, very little water is lost to evaporation in a hydroponic system, making hydroponics very useful in drought stricken areas. 'Scientists can use hydroponics to test how different nutrients affect a plant. With hydroponics, a scientist can measure exactly how much nutrients the plant is getting and can give the plant a deficiency or overabundance of a certain macro or micronutrient and determine precisely how it affects the plant's growth.' Apparatus: * 4 Plastic storage totes * Regular fish aquarium air pump * Air stones * Long pipes * Long grain brown rice * Deionised water * Urea solution [ (NH2)2CO] (aq) ...read more.

Middle

Method 2: Making the medium 1. Small holes will be pierced at the bottom of all 4 storage totes. Pipes should be able to fit tightly with a mesh without causing leaking. 2. All four pipes will be connected to an individual fish pump.( This will ensure that each medium will receive the same amount of oxygen) 3. Two bigger holes will be made at the top of the seals of the storage totes. (This is were the flower pots will be placed. They should contain holes bellow them to allow roots to grow through them). 2 pots will be used per tested solution to allow a repeat of the experiment in order to measure average growth in one medium. 4. An air stone can also be placed in each storage tote. 5. The storage tote should be filled with the nutrient solution. 6. A dual spectrum light ( desk lamp type) will be placed over the medium. Method 3: Preparation of Rice (Germination) 1. Rinse 1 cup brown rice several times until the water becomes clear. 2. Place the rice in a bowl and cover well with filtered water. 3. Let it stand for 12 hours. 4. Pour rice into a strainer and rinse well. 5. ...read more.

Conclusion

Health effects- Ammonium Nitrate - Inhalation: May cause irritation to the respiratory tract; symptoms may include coughing, sore throat, and shortness of breath. At high temperatures, exposure to toxic nitrogen oxides decomposition products can quickly cause acute respiratory problems. Inhalation of large amounts causes systemic acidosis and abnormal hemoglobin. Ingestion: Large oral doses of nitrates may cause dizziness, abdominal pain, vomiting, bloody diarrhea, weakness, convulsions, and collapse. Harmful if swallowed. May cause methemoglobinemia resulting in cyanosis. Skin Contact: Causes irritation to skin. Symptoms include redness, itching, and pain. Eye Contact: Causes irritation, redness, and pain. Chronic Exposure: Small repeated oral doses of nitrates may cause weakness, depression, headache, and mental impairment. Aggravation of Pre-existing Conditions: No information found. Safety Precautions: Ammonium Nitrate - Keep from contact with clothing and other combustible materials. Do not store near combustible materials. Store in a tightly closed container. Avoid breathing dust. Avoid contact with eyes, skin and clothing. (Wearing protective gloves and goggles.) Remove and wash contaminated clothing promptly. Use only with adequate ventilation. Wash thoroughly after handling. Urea - Avoid breathing dust. Keep container closed. Avoid contact with eyes, skin and clothing. (Wearing protective gloves and goggles.) Use only with adequate ventilation. Wash thoroughly after handling. Handling and Storage: Store solution preferably below 30C ...read more.

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