Agn 115 Study guides, Class notes & Summaries

Roller crimper breaks stems to reduce pop-up; morning turger is normally highest - True Few plants, especially ag crops, grow well outside the pH range of 5-8 pH - True Over yielding occurs when total combined yield of intercropped species (traditional corn-bean-squash polyculture of native americans) is greater then the combined yield of the same crops grown in monoculture on an equivalent total land area - true Because of the need for monoculture in ag systems to facilitate ease of manage...

MSU AGN 115 EXAM 1 | 100% Correct Answers | Verified | Latest 2024 Version

Norman Borlaug - "father of the green revolution" Normally, about 25% (or more) of the biomass at one trophic level is converted to biomass at the next trophic level. (Ch. 2) - FALSE Traditional agroecosystems rarely emphasized the recycling of nutrients. (Ch. 23) - False Even where irrigation is practiced on a large scale, agriculture has very little effect on the local hydrology and microclimate. (Ch. 1) - False People in the poorest nations normally spend more than 20% of their dis...

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. - animal waste from CAFO lagoons being too concentrated for use as fertilizer a lack of government subsidies for growing healthy food changes in the nutritional values of food since1950 Order the following ecological levels of organization from least (1) to most (4) complex. (Ch 2) - 1. Ecosystem 2. community 3. po...

Vernalization is A. is an effect of one species on another through chemicals B. can be used to suppress the germination and growth of weeds C. the process by which many winter planted crops are converted to reproductive growth D. all of the above E. both a and b - C. the process by which many winter planted crops are converted to reproductive growth In terms of agro-ecosystem diversity, an example of undesirable "simplification" of the system would be the loss of predatory insects thro...

According to the Soil Science Society of America's definition, mined materials such as Chilean nitrate and manure from animals (e.g. chicken poop) are both considered "fertilizers". (Lec. 6) A. True B. False - A. True ___ are drawbacks (undesirable characteristics) associated with the surface application of manures. (Ch. 8) A. Odor B. Insects C. Nitrogen loss through ammonification D. All are correct E. Both A and B - D. All are correct

AGN 115 Exam 1 | 100% Correct Answers | Verified | Latest 2024 Version 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. A. True B. False - A. True Suff...

Living mulches can keep soil cooler, reduce weeds and erosion, and reduce competition for soil water during dry periods. (Cover Crop Lec.) T/F - False When properly manipulated by mowing, a sorgo-sudangrass cover crop could provide soil aeration through deeper rooting activity in addition to the normal allelopathic benefits in weed suppression. (cover crop lecture) T/F - True Lawn clippings and soil from edging become sources of organic contaminants and nutrients in untreated storm run...