basic soil improvement
81evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
82Kenya — Kenyan, adj., n. /ken yeuh, keen /, n. 1. a republic in E Africa: member of the Commonwealth of Nations; formerly a British crown colony and protectorate. 28,803,085; 223,478 sq. mi. (578,808 sq. km). Cap.: Nairobi. 2. Mount, an extinct volcano… …
83Mexico — /mek si koh /, n. 1. a republic in S North America. 97,563,374; 761,530 sq. mi. (1,972,363 sq. km). Cap.: Mexico City. 2. a state in central Mexico. 6,245,000; 8268 sq. mi. (21,415 sq. km). Cap.: Toluca. 3. Gulf of, Mexican, Golfo de México /gawl …
84irrigation and drainage — ▪ agriculture Introduction artificial application of water to land and artificial removal of excess water from land, respectively. Some land requires irrigation or drainage before it is possible to use it for any agricultural production; other… …
85Agriculture in Ethiopia — is the foundation of the country s economy, accounting for half of gross domestic product (GDP), 60% of exports, and 80% of total employment.Ethiopia s agriculture is plagued by periodic drought, soil degradation caused by overgrazing,… …
86Colombia — Colombian, adj., n. /keuh lum bee euh/; Sp. /kaw lawm byah/, n. a republic in NW South America. 37,418,290; 439,828 sq. mi. (1,139,155 sq. km). Cap.: Bogotá. * * * Colombia Introduction Colombia Background: Colombia was one of the three countries …
87Greece — /grees/, n. 1. Ancient Greek, Hellas. Modern Greek, Ellas. a republic in S Europe at the S end of the Balkan Peninsula. 10,583,126; 50,147 sq. mi. (129,880 sq. km). Cap.: Athens. 2. a city in W New York. 16,177. * * * Greece Introduction Greece… …
88agricultural sciences, the — Introduction sciences dealing with food and fibre production and processing. They include the technologies of soil cultivation, crop cultivation and harvesting, animal production, and the processing of plant and animal products for human… …
89pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
90Plough — Plow redirects here. For the Canadian soldier, see Edward Chester Plow. Plowman redirects here. For the surname, see Plowman (surname). Furrow redirects here. For other uses, see Furrow (disambiguation). For other uses, see Plough… …
