AGN 115 Exam 4 | 100% Correct Answers | Verified | Latest 2024 Version

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 management, there are very few ways to increase ecological diversity without considerable expense or difficulty - false in terms of agro-ecosystem diversity, an example of undesirable "simplification" of the system would be the of predatory insects through indiscriminate use of a broad- spectrum insecticide - true Living mulches can keep soil cooler, reduce weeds and erosion, and reduce competition for soil during dry periods - false cover crops are often planted in mixtures of at least one grass and one legume - true Beneficial use of cover crops is restricted to providing cover during late fall, winter and early spring season - false Island biogeography theory can be applies to pest and beneficial insects in ag fields to better understand how they're distributed into a crop such as soybeans or a vineyard - false Plowing cover crops under early in the spring will increase the decomposition rate of cover plant material - falseallowing cover crops to mature will improve nutrient accumulation in the cover biomass, but it may reduce the ability of microbes to decompose residues for short term use - true some types of cover crops can contribu