A) Warm and humid B) Temperate C) Cold and dry D) Arid desert
A) Heavy clay B) Well-drained, sandy loam C) Compacted silt D) Rocky soil
A) Late autumn B) Summer C) Mid-winter D) Early spring
A) Leaves B) Roots C) Flowers D) Tubers or vine cuttings
A) Right on the surface B) 12 inches C) Approximately 4-6 inches D) 1 inch
A) To make harvesting easier B) To allow the vines to climb and maximize sunlight exposure C) To prevent weed growth D) To keep the tubers warm
A) Earthworms B) Praying mantises C) Ladybugs D) Yam beetles
A) Powdery mildew B) Black spot C) Anthracnose D) Rust
A) Regularly, keeping the soil moist but not waterlogged B) Never, yams prefer dry conditions C) Daily, regardless of soil moisture D) Only when the soil is completely dry
A) A fertilizer high in phosphorus only B) A fertilizer high in nitrogen only C) No fertilizer is needed D) A balanced fertilizer high in potassium
A) 2-3 years B) 1-2 months C) 1 week D) 6-12 months
A) Leave the yams in the ground indefinitely B) Pull the vines forcefully from the ground C) Carefully dig around the tubers to avoid damage D) Use a tractor to plow the field
A) In direct sunlight B) In the refrigerator C) In a cool, dry, and well-ventilated place D) In a damp cellar
A) To shade the roots B) To encourage tuber development C) To prevent vine growth D) To reduce airflow
A) Freezing the yams B) Boiling the yams C) Allowing the skin to harden, improving storage life D) Soaking the yams in water
A) Nitrogen B) Phosphorus C) Calcium D) Potassium
A) 8.5-9.0 B) 6.0-6.5 C) 7.5-8.0 D) 4.0-4.5
A) To change the color of the yams B) To increase the size of the yam tubers C) It's not important D) To prevent soil depletion and pest buildup
A) Direct seeding B) Air layering C) Using setts (pieces of tubers) D) Grafting
A) Increases humidity around the plants B) Improves soil compaction C) Attracts pollinators D) Reduces competition for resources like nutrients and sunlight
A) Helps retain soil moisture and suppress weeds B) Accelerates soil erosion C) Increases soil acidity D) Attracts pests
A) Drying yam leaves for tea B) Growing seedlings C) Processing yams into flour D) Storing harvested yams
A) Yams have smoother skin B) Yams are typically sweeter and have orange flesh C) Yams are smaller in size D) Yams are typically starchier and less sweet
A) India B) Brazil C) Nigeria D) China
A) Root development B) Nitrogen fixation C) Promoting leafy growth D) Enzymatic activity and regulating water balance
A) Faster growth compared to using setts B) Lower cost compared to setts C) Increased resistance to pests D) Larger tuber size
A) The harvesting season B) The flowering stage of the plant C) A period of inactivity of the tuber D) A disease affecting the leaves
A) Providing support for the vines to climb B) Protecting the tubers from sunlight C) Irrigating the plants D) Controlling soil erosion
A) Food B) Traditional medicine C) Animal feed D) Making cooking oil
A) To prevent fungal infections B) Yams are not grown from seed C) To increase seed size D) To improve germination rate |