to increase grain yields
41Rice — For other uses, see Rice (disambiguation). Oryza sativa, commonly known as Asian rice. Rice, white, long grain vegetable, raw Nutritional value per 100 g (3.5 oz) …
42Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… …
43Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
44agriculture, origins of — Introduction the active production of useful plants or animals in ecosystems that have been created by people. Agriculture has often been conceptualized narrowly, in terms of specific combinations of activities and organisms wet rice production… …
45Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
46Genetically modified food — Genetically modified foods (GM foods or GMO foods) are foods derived from genetically modified organisms (GMOs). Genetically modified organisms have had specific changes introduced into their DNA by genetic engineering techniques. These… …
47radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
48Green Revolution — For other uses, see Green Revolution (disambiguation). Increased use of various technologies such as pesticides, herbicides, and fertilizers as well as new breeds of high yield crops were employed in the decades after the Second World War to… …
49Organic farming — Agriculture General …
50farm management — ▪ agriculture Introduction making (industrial engineering) and implementing of the decisions (agribusiness) involved in organizing and operating a farm for maximum production and profit. Farm management draws on agricultural economics for… …
