AGN 115 Final Exam | 100% Correct Answers | Verified | Latest 2024 Version

People in the poorest nations normally spend (on average) more than 20% of their disposable income on food. (Lec. 4) - True Joel Salatin's said his goal in managing his operation is to ____. (Fresh the movie, 2009) - "marry" some new technologies with knowledge and experience Traditional agroecosystems make extensive use of locally available and renewable resources. - True In Fresh (2009), Michael Pollan (author of Omnivore's Dilemma and In Defense of Food) makes exaggerated, false, or misleading statements about _____. Select ALL that apply. - A lack of governmental subsidies for growing healthy food Animal waste from CAFO lagoons being too concentrated for use as fertilizer Changes in the nutritional values of food since 1950 "Maintains ecological health of soil." This would normally be associated with: - Sustainable Agriculture The world population is currently estimated to be about ____, while the USA population is close to ____. - 7.3 billion; 320 million Contemporary textbooks and documentaries are written and produced in a manner that fully eliminates bias - and the scientific peer-review process assures that it is free from error - so that each of these sources always may be considered sources of unbiased fact. (Lec. 2, Fresh) - False Historically (e.g. 1993), about ___% of corn produced in the USA was used for cattle feed while <15% of it was used to produce ethanol. In 2013 about 40% was used for livestock feed while about ___% was used for ethanol production. (Lec. 4) - 75; 40All of the following have contributed to decreasing local control over agriculture, except... (Ch. 1) - Decreasing ecological stability from traditional farming techniques Except for "Bordeaux mixture" (used on grapes in France since the 1880s), chemical pesticides were touted as new weapons against pests after ____, so our historical experience with them amounts to about ____. (Ch. 1) - World War II; 70 years In Fresh, Andrew Kimbrell (Executive Director, The Center for Food Safety) said that new data show that "medium-sized organic [production systems] are far more productive than any sized conventional [production systems]"; however, data from recent university studies show that organic systems are usually ____. - Equal to or lower yielding than conventional systems Norman Borlaug greatly increased yields for farmers in Mexico, India and Pakistan using classical breeding techniques to produce a rust-resistant, dwarf wheat variety that was especially responsive to fertilization and irrigation. - True "Almost all plant residues buried soon after crop harvest." Would normally be associated with: - Poor soil health The National Organics Program currently permits the use of the antibiotics streptomycin and oxytetracycline, but only to combat fire blight in organic apple and pear trees. - False Normally, about 25% (or more) of the biomass at one trophic level is converted to biomass at the next trophic level. (Ch. 2) - False In the Penn and Teller: Norman Borlaug (2003) video, Dr. Terri Lomax, professor of Botany and Plant Pathology (OSU), said that genetically modified crops are subjected to millions of dollars in testing and are regulated by EPA, FDA and USDA, while protestors and administrators (e.g. Charles Margulus) affiliated with Greenpeace claimed the crops were released without any testing. - True` "Reliance on synthetic or mineral fertilizer." This would normally be associated with: - Conventional AgricultureIntensive (frequent) tillage, combined with monoculture and short crop rotations, leaves the soil exposed to the erosive effects of wind and rain. (Ch. 1) - True Because of its sandier soils and warmer temperatures, the _____ region of Missouri is most associated with the production of cotton. (Lec. 1) - Bootheel Contemporary agricultural practices and trade practices have led to problems with ___. (Ch. 1) - All of these answers are correct: Reliance on external inputs and global inequality Overuse of water and damage to hydrological systems Soil degradation and loss of genetic diversity Environmental pollution and loss of control over agricultural production On average, in 1950, one USA farmer produced enough food to feed about ___ people. (Lec. 4) - 15 Erle Ellis conducted studies of traditional agro-ecosystems in China and observed that ___ was likely the limiting factor on productivity. (Ch. 23) - Nitrogen as a nutrient In the film Fresh, Joel Salatin's chickens followed pigs in a grazing rotation to kill and eat fly larvae in the manure. - False The Missouri "bootheel" (southeastern counties) is known for high productivity of crops, but Missouri's ___ counties have the highest hay and cattle production. - South western "Intensive tillage." This would normally be associated with: - Conventional AgricultureThe boundary of an ecosystem must be defined by streams or watershed boundaries. (Ch. 2) - False "Stability" as a structural property of an ecosystem or community was discussed in the Agroecology text book. Natural communitie