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 through indiscriminate use of a broad-spectrum insecticide. (Ch. 17) True or False? - ✔✔True Alleycropping, silvopasture, buffers, windbreaks, and forest farming are all examples of agroforestry production systems. True or False? - ✔✔True Dung beetles are valuable for incorporating cattle waste back into the soil. Which of the following considerations should be taken when applying pesticides for cattle parasites and flies to minimize damage to dung beetle populations? (Grazing systems lecture) A. select a compound known to do less damage to the "off-target" dung beetles, such as Moxidectin instead of Ivermectim B. Time the application of the pesticide so it does not coincide with dung beetle reproduction C. consider the average stock density of cattle in the field where the pesticide is being applied D. all of the above are important considerations E. both A and B are important considerations F. both B and C are important considerations - ✔✔E. both A and B are important considerations Generally speaking, the Hessian "Fly Free" date for SW Missouri is around October 14. (Pest management Lec.) True or False - ✔✔True Select all FALSE statements about roller-crimping a cover crop. Roller-crimping is most effective early in the morning. Roller-crimping success requires waiting one week between rolling and planting for cover crop death. Roller-crimping can potentially create residue cover of 85% or more for the growing season. Roller-crimping works by breaking the cover crop stems in multiple places, eliminating the need to use an herbicide to kill the cover crop. - ✔✔Roller-crimping success requires waiting one week between rolling and planting for cover crop death. Living mulch is _______. (Overview of Cover Crops and Green Manures, Preston Sullivan). A. a cover crop established after harvesting the main crop and is used primarily to reduce nutrient leaching from the soil profile. B. a winter cover crop planted in late summer or fall to provide soil cover during the winter. C. a cover crop planted alongside the main crop to attract pest insects away from the main crop in order to reduce the need for pesticide application. D. a cover crop that is interplanted with an annual or perennial cash crop - ✔✔D. a cover crop that is interplanted with an annual or perennial cash crop According to the assigned reading on pasture management, a surfactant is the process of using a boom type sprayer, boom-buster nozzle, airplane, or helicopter to treat larger weed infestations with a solution of herbicide and water.