soil orders

Land is also a precious resource. Land is needed for agriculture and occupation. Land is under pressure due to increasing population. Land for agriculture has to be fertile in order to be able to support a good crop. The fertility of land lies in the quality of the soil..

Land is also a precious resource. Land is needed for agriculture and occupation. Land is under pressure due to increasing population. Land for agriculture has to be fertile in order to be able to support a good crop. The fertility of land lies in the quality of the soil. So..

Blue green algae are autotrophic and nitrogen fixing organisms unlike heterotrophic and symbiotic nitrogen fixing microbes discussed above. They manufacture their food by photosynthesis, as they have chloroplasts. Hence, they can live independently. BGA like Anabaena and Nostoc are found to live on..

Fertilizers are a class of synthetic chemicals supplied to crops in order to increase their growth and yield. Important fertilizers used in agriculture include urea, dia-ammonium phoshate, muraite of potash (potassium chloride), potassium sulphate, gypsum (calcium sulphate), urea - ammoni..

Sustainable Agriculture - Crop yields remaining stagnant, pesticides polluting the eco-systems, increasing cost of fertilizers, reducing soil fertility, imbalance in host - parasite and predator - parasite relationships have pushed agriculture into dangerous mode. Scientists have looked b..

These are plants that grow in places with scanty water such as deserts and sandy hills. The plant is modified so that it can withstand prolonged periods of drought conditions without getting harmed. The following parts of the plant undergo modification. Root - Produce a long taproot that grows deep..

It is a process of selective improvement of a crop. In selection, a plant is selected based on its genotypic and phenotypic characters in order to improve some of its characters in its next generation. Natural selections have occurred in many crops, where some characters were retained and..

Underground water is that part of rainwater, which is infiltrated into the soil and is developed into a source of water. Total rainfall in the country is estimated to contribute 400 million hectare meters (1 hectare metre = 10,000 cubic metre = 2,80,000 cu ft) of water annually. Out of t..

A food chain is a series of steps by which energy is obtained, used, and transformed by living things. For example; sunlight helps plants to grow, the plants are eaten by cattle, and lions eat the cattle. All living organisms of the biosphere are related to each other by a common factor, i.e.,..

. He had a curved, cosy, and rounded body, dark liquid eyes. He had bushy little hands, complete with thumbs that cutie pie used with astonishing speed and skill. Cutie Pie became an instant celebrity - he was a commercial success sold as Cutie Pie dolls, colouring books, tee-shirts, fan clubs, cer..