Tag: biology

• Rhizobium is the symbiotic soil bacteria that fix nitrogen in leguminous plants. They form a symbiotic relationship with legume and resides in the root nodules of legumes. 
• They cannot independently fix nitrogen. 

• Fertilizers, chemically synthesized substances that are rich in plant nutrients such as NPK. 
• They are artificially made but have a rapid response. The overuse of fertilizers can cause negative effects like loose soil fertility.

• Fertilizers, the chemically synthesized substances which are very rich in the plant nutrients like nitrogen, phosphorous and potassium.
• Nitrogen (N) required for the leaf growth 
• Phosphorus (P) required for the development of roots, flowers, seeds, and fruit 
• Potassium (K) required for strong stem growth, movement of water in plants, promotion of flowering and fruiting. 

Animal manure is organic matter, which is used as a fertilizer in agriculture. The manure gets contaminated only when micro-organisms attack. Animal manure can improve the soil aggregation so that the soil becomes more fertile. Horse manure is mostly used in agriculture apart from the horse manure cattle manures like cow dung, sheep manure.

• Manure is an organic substance produced by the decomposition of plant and animal wastes in the presence of microorganisms and used as fertilizers. Fresh manure has microbes in it, that may be dangerous. It should not be applied to edible crops that will soon be harvested. Instead of fresh manure aged or old manure should be applied to the edible crops.

• Compost is a nutrient-rich organic substance produced by the decomposition of remnants wastes like dung or bedding. It is used in gardens, agriculture as a fertilizer.

Manure is used as an organic fertiliser for the better growth of plants. Manure supply nutrients required for the plant growth. It also, improve the fertility of the soil. Horse manure is mainly used as fertilisers in many agricultural fields.

• The increased use of nitrogen fertilizer, adds to the already existing amount of reactive nitrogen in the atmosphere, in the form of nitrous oxide (N2O) through the nitrogen cycle. 
• It is the third most important greenhouse gas following carbon dioxide and methane. Greenhouses gases, including nitrous oxide, causes global warming by absorbing the solar energy in the atmosphere and global warming leads to the stratospheric ozone depletion.