MCQs on Irrigation Management and Drainage
Irrigation Management and Drainage MCQ for ICAR-JEF, ICAR-SRF, ICAR-NET, IBPS-AFO/SO, Pre-PG, BHU Pre-PG, IFFCO-AGT, CCI, FCI, B.sc, M.sc, etc. Here are 20 multiple-choice questions (MCQs) with answers and explanations on Irrigation Management and Drainage: Irrigation Management MCQs Question 1: What is the primary objective of irrigation in agriculture? Answer: B) To supply essential moisture for plant growthExplanation: The primary goal of irrigation is to provide plants with the necessary water for growth, especially in areas with insufficient or irregular rainfall. Question 2: Which of the following is NOT an objective of irrigation? Answer: C) To create soil erosionExplanation: Irrigation supports crop growth and productivity, while soil erosion is an undesirable outcome. Question 3: Which method of irrigation involves the distribution of water through small channels or furrows? Answer: C) CorrugationsExplanation: The corrugation method involves creating small furrows or channels to guide water efficiently to crops. Question 4: What is one of the advantages of drainage in agricultural systems? Answer: A) To prevent waterloggingExplanation: Drainage removes excess water from the soil, preventing waterlogging and ensuring better aeration for plant roots. Question 5: Which of the following is a common method to quantify the amount of irrigation water? Answer: B) Water metersExplanation: Water meters measure the amount of water flowing through irrigation systems, enabling accurate water management. Question 6: Which type of irrigation is best suited for conserving water by delivering it directly to the roots? Answer: C) Drip/trickle irrigationExplanation: Drip irrigation delivers water directly to the root zone, minimizing water loss due to evaporation or runoff. Question 7: One of the objectives of irrigation is to “soften tillage pans.” What does this refer to? Answer: A) Reducing the hardness of soil layers that impede root growthExplanation: Tillage pans are compacted soil layers that limit root penetration, and irrigation can help soften these layers, promoting better root development. Question 8: Which of the following irrigation methods is typically used in flat, uniform fields to irrigate large areas? Answer: B) FloodingExplanation: Flooding is used in flat, uniform fields where water is spread over large areas for uniform irrigation. Question 9: In the context of irrigation, what does the term “intensive cropping” refer to? Answer: A) Planting multiple crops in a single growing seasonExplanation: Intensive cropping involves growing multiple crops within one growing season, requiring effective irrigation management. Question 10: What is the key advantage of using a sprinkler system for irrigation? Answer: B) It can cover large areas with minimal laborExplanation: Sprinkler systems efficiently irrigate large areas with less labor, which is beneficial for commercial farming. Drainage Management MCQs Question 11: What is drainage in the context of agriculture? Answer: A) The process of removing excess water from the soilExplanation: Drainage involves removing excess water from the soil to prevent waterlogging and improve plant growth. Question 12: Which of the following is a common cause of waterlogging in agricultural fields? Answer: A) Intensive rainsExplanation: Heavy rains can saturate the soil, causing waterlogging if the soil cannot absorb or drain the excess water. Question 13: What is one of the effects of ill-drained conditions on crops? Answer: B) Restricted root growthExplanation: Poor drainage leads to waterlogged soils, restricting root development and reducing plant health. Question 14: Which of the following is a potential benefit of proper drainage in agricultural systems? Answer: B) Improved soil ventilationExplanation: Proper drainage improves aeration by allowing air to reach plant roots, promoting healthy growth. Question 15: How can defective irrigation contribute to waterlogging? Answer: B) By causing excess water accumulation in the soilExplanation: Over-irrigation or poorly designed irrigation systems can result in excessive water buildup, leading to waterlogging. Question 16: What is the key difference between surface drainage and subsurface drainage? Answer: A) Surface drainage removes water from the soil surface, while subsurface drainage removes water from below the surfaceExplanation: Surface drainage removes excess water from the soil surface, while subsurface drainage deals with water below the surface. Question 17: Which of the following is a common method used for subsurface drainage in agricultural fields? Answer: C) Drainage pipes or tilesExplanation: Subsurface drainage systems use drainage pipes or tiles to remove water from below the soil surface. Question 18: What is a common negative effect of waterlogging on crops like maize or mustard? Answer: A) Restricted root growth and lodgingExplanation: Waterlogging restricts root development, which can cause lodging (plants falling over due to weak roots). Question 19: Why is mid-season drainage important for rice crops? Answer: A) To reduce waterlogging and allow the soil to breatheExplanation: Mid-season drainage allows soil to aerate, which is important for rice crop health. Question 20: How can proper drainage improve soil structure and decrease soil erosion? Answer: A) By promoting healthy root growth and reducing soil compactionExplanation: Proper drainage improves soil structure and reduces compaction, which helps prevent erosion.ations.
