plant nutrient depletion

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• Fertilizer — Tennessee Valley Authority: Results of Fertilizer demonstration 1942 …   Wikipedia

• Soil conservation — is set of management strategies for prevention of soil being eroded from the earth’s surface or becoming chemically altered by overuse, salinization, acidification, or other chemical soil contamination. The principal approaches these strategies… …   Wikipedia

• Cell culture — in a Petri dish Epithelial cells in culture, stained for keratin (red) an …   Wikipedia

• Habitat destruction — The Chaco thorn forest is being felled at a rate considered among the highest in the world to give way to soybean cultivation. Habitat destruction is the process in which natural habitat is rendered functionally unable to support the species… …   Wikipedia

• Kelp forest — Kelp forests are underwater areas with a high density of kelp. They are recognized as one of the most productive and dynamic ecosystems on Earth.Mann, K.H. 1973. Seaweeds: their productivity and strategy for growth. Science 182: 975 981.] Kelp… …   Wikipedia

• Iron fertilization — For information on ocean fertilization schemes not involving iron, see ocean nourishment. An oceanic phytoplankton bloom in the South Atlantic Ocean, off the coast of Argentina covering an area about 300 miles (480 km) by 50 miles Iron… …   Wikipedia

• Land clearing in Australia — largely coincides with areas of high population density, and large tracts of Banksia woodland are cleared for urban expansion every year. [cite journal last = Lamont first = Byron B. authorlink = coauthors = Enright, Neal J.; Witkowski, E. T. F.; …   Wikipedia

• Sustainable agriculture — integrates three main goals: environmental stewardship, farm profitability, and prosperous farming communities. These goals have been defined by a variety of disciplines and may be looked at from the vantage point of the farmer or the… …   Wikipedia

• Michael Mortimore — (born 1937) is a British geographer and a prolific researcher of issues in the African drylands. He was an academic in Nigerian universities for over 25 years. He runs a British research consultancy, Drylands Research. He is best known for an… …   Wikipedia

• environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium

• nutritional disease — Introduction       any of the nutrient related diseases and conditions that cause illness in humans. They may include deficiencies or excesses in the diet, obesity and eating disorders, and chronic diseases such as cardiovascular disease,… …   Universalium