Managing Weeds in the Home Garden

Integrated Pest Management Managing Weeds in the Home Garden

1 According to the article, which of the following statements is NOT true about weeds. Weeds that persist is cultivation are unique, highly-adapted plants. Problem weeds persist as a result of their tremendous reproductive capacity. A tomato plant growing in a flowerbed is as much a weed as pigweed or crabgrass. Weed populations survive in their unstable habitats by having short life cycle. Weed populations survive by often having more than one seed generation in a year. 2 The soil maintains a reservoir of dormant, long-lived weed seeds with variable germination times. Assuming the soil harbors 10 million weed seeds per acre and that 75% germinate each year, that 99.5% of the emerged weeds are controlled and that each surviving weed produces 100 seeds, how many years would be required to deplete the soil of weed seeds? 14 years 20 years 28 years 30 years 35 years 3 Weeds result in more crop loss than insects and plant diseases combined. How does weed competition cause crop losses? Reducing crop growth through competition for water, nutrients and light. Requiring control measure that may, in themselves, injure crops. Lowering the crop quality through contamination with weed parts. A and B, not C All of the above 4 What are the three strategies mentioned in the article that you should use to deal with weed problems? Prevention, Irrigation, Weed Control Production, Eradication, Weed Control Prevention, Irradiation, Weed Control Prevention, Eradication, Weed Control None of the above 5 Prevention is aimed at keeping weeds out of the garden and landscape. What methods are involved in prevention? Mowing informal or unmaintained areas to prevent weeds from going to seed. Flower and vegetable transplants and woody plants purchased should be inspected carefully and any weeds removed before planting. Using clean, weed-free crop seed to prevent the introduction of new weed species. Clean equipment after use to remove adhering soil that might carry weed seeds. All of the above 6 Eradication involves eliminating all live plants, plant parts and seed from an area. Which of the following statements is true according to the article? Eradication is the best method of having a weed free area. It is useful for every type of weed infestation. Eradication is seldom practiced but should be considered if new, potentially troublesome weeds like quackgrass appear in the garden. Eradication is the MOST COMMON weed control method used. Use eradication to eliminate all weed growth except quackgrass. None of the above 7 According to the article, what is the MOST COMMON option in dealing with weed problems? Prevention Weed Control Eradication Germination Interference 8 Weed control limits the interference of weeds with a crop to levels we can tolerate. Which of the following statements is given in the article as a control method? Destroy weeds as soon as they appear. Allowing weeds to become established makes them easier to control. Hand weeding is never a good method of weed control. Use of mulches is an inefficient way to control weed establishment and growth. None of the above 9 Which of the following weed control methods are suggested in the article? Proper cultivation. Flaming Application of herbicides A & B above, not C A, B, & C above 10 Define the term "allelopathy." A method by which weeds reproduce new plants. Bearing minute protuberances. The inhibition of plant growth caused by the release of metabolic substances from another plant. Leaves not all falling off at the same time. None of the above.