This quiz works best with JavaScript enabled. Home > Soil Nutrition > Manures Fertilizers Agrochemicals – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Manures Fertilizers Agrochemicals Quiz 1 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What can be added to the environment around the plant that contain essential plant nutrients? A) Water. B) Sunlight. C) Fertilizer. D) Food. Show Answer Correct Answer: C) Fertilizer. 2. Angel selects a fertilizer that will promote good green growth for the leaves and stems of her houseplants. The fertilizer will most likely contain the primary element: A) Chlorine. B) Copper. C) Nitrogen. D) Zinc. Show Answer Correct Answer: C) Nitrogen. 3. What is the fertilizer that is usually concentrated and is to be mixed with water? A) Powder. B) Liquid. C) Granular. D) None of above. Show Answer Correct Answer: B) Liquid. 4. Nitrogen for the Haber process is formed by A) Fractional distillation of air. B) Fractional distillation of crude oil. C) Electrolysis of water. D) Fixation of nitrogen by pea plants. Show Answer Correct Answer: A) Fractional distillation of air. 5. Which of the following is untrue for the haber process? A) Ammonia gas is cooled and collected as a liquid. B) A really high temperature is used to speed up the reaction. C) Hydrogen and nitrogen are the raw materials for the reaction. D) Vary high pressure. Show Answer Correct Answer: B) A really high temperature is used to speed up the reaction. 6. The irrigation system that adds water by flooding furrows is A) Surface. B) Subirrigation. C) Sprinkler. D) Trickle. Show Answer Correct Answer: A) Surface. 7. How does nitrogen help a plant grow A) Dark green leaf. B) Root growth. C) Fruit growth. D) None of above. Show Answer Correct Answer: A) Dark green leaf. 8. If number of bacteria increases this A) Increases algal bloom. B) Increases nitrate levels. C) Consumes all the oxygen in water increasing biodiversity. D) Consumes all the oxygen in water decreasing biodiversity. Show Answer Correct Answer: D) Consumes all the oxygen in water decreasing biodiversity. 9. What is one of the most important soil properties that affects the availability of nutrients? A) Moisture. B) Texture. C) Organic material. D) PH. Show Answer Correct Answer: D) PH. 10. What is deficiency? A) That does not relate to plants. B) The lack of water in a plant. C) This is when it has rained for several days and there is no sun reaching the plant. D) A shortage of given nutrient needed by a plant. Show Answer Correct Answer: D) A shortage of given nutrient needed by a plant. 11. If nitrate levels in soil get low A) Crops will grow bigger. B) Crops will grow slower. C) Crops wont grow as well. D) Animals will die. Show Answer Correct Answer: C) Crops wont grow as well. 12. Which of the following would be a suitable fertilizer? A) Nitrogen dioxide. B) Potassium nitrate. C) Copper phosphate. D) Nitrogen oxide. Show Answer Correct Answer: B) Potassium nitrate. 13. If Luke Warm needed to apply 50lbs of potassium per acre and was using 0-0-60 (potash) as his K source how many total pounds of Potash would he need to put on? A) .08. B) 30. C) 50. D) 83. Show Answer Correct Answer: D) 83. 14. How is fertilizer added? A) Irrigation Water. B) Soil. C) Air or sprayed on leaves. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. What is the function of nitrogen in plant growth? A) Makes seeds. B) Produces a healthy green color. C) Produces a yellow color in leaves. D) Protects plants against winterkill. Show Answer Correct Answer: B) Produces a healthy green color. 16. What three element do plants obtain from the atmosphere? A) Carbon Dioxide, Boron, Sodium. B) Carbon, Hydrogen, Oxygen. C) Oxygen, Hydrogen, Magnesium. D) Hydrogen, Copper, Zinc. Show Answer Correct Answer: B) Carbon, Hydrogen, Oxygen. 17. When looking at a fertilizer bag and the ratio is 15-25-10. What percent of nitrogen is in this bag? A) 10%. B) 25%. C) 0%. D) 15%. Show Answer Correct Answer: D) 15%. 18. What has to happen before nutrients can be taken up by the roots of a plant? A) Scarification. B) Leaching. C) Dissolve in water. D) None of the above. Show Answer Correct Answer: C) Dissolve in water. 19. What is phosphorus used for in a complete fertilizer? A) For green foliage. B) For roots & bloom. C) For overall plant health. D) None of above. Show Answer Correct Answer: B) For roots & bloom. 20. What nutrients are usually lacking in the soil? A) Nitrogen, Phosphorus, Potassium. B) Nitrogen, Oxygen, Zinc. C) Sodium, Potassium, Hydrogen. D) Iron, Cobalt, Copper. Show Answer Correct Answer: A) Nitrogen, Phosphorus, Potassium. 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