Organic Gardening Certificate Program Quiz Week 3 Answer Key

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1 Q uiz for week 3 readings: 1. The database on the Organic Weed management Website contains the following sections except: A. Picture B. Ecology C. Management D. Description 2. The weed quackgrass can reproduce using: A. Underground rhizomes B. Seed dispersal C. Both by rhizomes and seeds D. None of the above 3. Do raised garden beds require a frame to be effective? No 4. Which of the following is not a chemical property we want to have in a potting mix? A. ph near 7 B. Low to moderate nutrient levels C. High nutrient levels 5. Which of the following is a characteristic of perlite? A. Raises ph of potting mixes B. Adds nutrients to potting mixes

2 C. Improves aeration of potting mixes 6. To save healthy and uniform seeds from vegetable crops, it is best to focus on: A. Open pollinated varieties B. Hybrid varieties C. Diseased plants. 7. Lettuce seeds lose much of their viability after: A. 6 months B. 1 year C. 2 years D. 5 years 8. All of the following conditions are important for seed germination except: A. Light B. Moisture C. Temperature D. Tray type 9. The best time to transplant seedlings is: A. Cloudy, windy day B. Cloudy, temperate day C. Cloudy, cold day D. Sunny, hot day 10. Which of the following is a symptom of under irrigation? A. Reduced plant growth

3 B. Increased root diseases C. Leached nutrients Bed Preparation, Seed Starting, Weeds, and Irrigation Class Quiz Questions 1. What media would you use in a seeding mix for holding water? a. Sand b. Perlite c. Coir d. Pumice Answer: C 2. What two reasons to start your own seeds? Answers: Controlled propagation environment Indoor growing environments allow you to control light, water, temperature, humidity and you can provide protections from pests. Extended season Allows you to start plants earlier than you could outside. Space saving in the garden When seeds are started indoors, the time they would normally take in the garden bed to germinate and grow can be used for something else. Increased pest and weed competition Give your vegetables a head start over the weeds. Diversity There are thousands of varieties of seeds but they are never all available as plant starts. By buying your own seed, you get to select varieties specifically suited to your climate, taste, and preference. Money savings Seeds are cheaper than plant starts. Quality You know the quality of your starts and can never be sure how purchased starts where raised. 3. It is good to harden off your transplants before planting them so that their roots are better adapted to the soil. T/F Answer: False You harden off to transition their leaves to the new growing conditions and to slow down the rate of new growth allowing for the plant to better adapt to harsher conditions (cold, wind, rain, pest pressure). 4. Why is a false seed bed an effective weed management tool? Answer: False seed beds allow you to deplete the weed seed bank in the top 2" of soil. This will mean very little competition for the following crop.

4 5. Transplanting is an effective means of weed competition. T/F Answer: True 6. List two aims of soil cultivation? Answers: Build soil quality Aerate soil, increases pore space in soil Increase drainage and water retention for optimal plant development and growth Increase rate of mineralization and release of plant available nutrients into soil Increase temperature of heavy soil in early spring allowing for higher seed germination rate and increased microbial activity (healthy soil food web). Incorporate amendments and fertilizers Incorporate cover crops Control weeds Create optimal beds for sowing 7. What is the most important thing to consider before cultivating your soil? a. Organic matter content b. ph level of soil c. Soil moisture d. Soil texture Answer: c 8. What are some impacts of excessive soil cultivation? a. Decrease in soil organic matter b. Decrease in water and nutrient holding ability c. Loss of pore space d. All of the above Answer: d 9. The broadcast sowing method is best used for sowing: a. Small seeded crops b. Crops that need to be trellised c. Cover crops

5 d. A and C Answer: d 10. What is the difference between Evaporation and Transpiration? Answer: Evaporation water loss to the atmosphere due to heat, sun intensity, wind, humidity, and exposure. Transpiration the process by which plants lose water during photosynthesis and growth; water is absorbed by roots and exhaled through open pores (stomata) in leaves.

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