Introduction
Are you preparing for competitive exams or looking to boost your general knowledge in agriculture? Our agronomy quiz with answers is your go-to resource! Agronomy, the science of soil management and crop production, is a critical subject for students aiming to excel in exams like IBPS AFO, ICAR-JRF, UPSC, SSC, and other agricultural tests. This carefully curated list of 200 one-liner questions and answers covers key topics like crop science, soil fertility, weed management, and irrigation. Designed to be concise yet comprehensive, this agronomy quiz with answers will help you master essential concepts and ace your exams. Dive in and test your knowledge today!
Agronomy Quiz with Answers: 200 One-Liner Questions
- What is agronomy? The science of soil management and crop production.
- Who is called the Father of Agronomy? Peter Decresenzi.
- What is the primary focus of weed science? Managing unwanted vegetation that competes with crops.
- What is the centre of origin of barley? Asia and Ethiopia.
- What is the test weight of bajra? 8–12 gm.
- Which millet has the highest productivity? Finger millet.
- What is the standard test weight per bushel for soybean? 56 pounds.
- What causes leaf rust in wheat? A fungus spread by wind from southern states.
- What is conservation tillage? Leaving at least 30% crop residue on the soil surface after planting.
- What is the spacing for barley to achieve 2,50,000 plants/ha? 20 × 30 cm.
- What is the ideal climate for oats? Cold and dry climate.
- What is the centre of origin of oats? Asia minor.
- What is the primary characteristic of climacteric fruits? They ripen after harvest with ethylene production.
- What is the process of fruit ripening associated with? Conversion of starch to sugar.
- What decides the nature of cultivated crops? Quantity and distribution of rainfall.
- What is traditional agriculture? Farming using indigenous knowledge and natural resources.
- What is modern agriculture dependent on? Technology, resources, and government support.
- What is the goal of organic farming? Using natural methods to maintain soil fertility.
- What is the first earthing up time in potato planting? 30–35 days after sowing.
- What is the property of weed seeds? They mature simultaneously with high fecundity.
- What is not a principle of soil conservation? Inadequate drainage.
- What is a key feature of ideotypes for dryland farming? Effective root system.
- What is agroecology? Sustainable farming aligned with ecological principles.
- What does nutrient management focus on? Efficient use of fertilizers to enhance soil fertility.
- What is dryland farming? Crop production in arid and semi-arid regions.
- What is the focus of agricultural ecology? Sustainability through ecological principles.
- What does crop physiology study? Plant growth and responses to environmental conditions.
- What is agronomic engineering? Applying engineering to optimize farm equipment.
- What is the purpose of integrated pest management (IPM)? Combining biological and cultural pest control methods.
- What is the centre of origin of wheat? Fertile Crescent.
- What is the main source of nitrogen in soil? Organic matter decomposition.
- What is the ideal pH range for most crops? 6.0–7.5.
- What is allelopathy in crops? Chemical inhibition of one plant by another.
- What is the primary function of crop rotation? Improve soil fertility and reduce pests.
- What is evapotranspiration? Loss of water from soil and plants.
- What is the main cause of soil erosion? Water and wind.
- What is zero budget natural farming? Farming using natural inputs with minimal external costs.
- What is protected agriculture? Modifying the environment for maximum crop growth.
- What is the percentage of farmers in the developed world? Less than 2%.
- When is World Cotton Day observed? October 7.
- What is mixed farming? Combining crop cultivation and livestock rearing.
- What is the average daily milk production of a cow? About 8 gallons.
- What is an example of a pest management barrier? Physical barriers to prevent pest entry.
- What is the centre of origin of rice? Southeast Asia.
- What is the main component of soil organic matter? Humus.
- What is the purpose of contour plowing? Reduce soil erosion on slopes.
- What is the primary weed control method in organic farming? Manual weeding.
- What is the main source of phosphorus in soil? Rock phosphate.
- What is the role of mycorrhizae in plants? Enhance nutrient and water uptake.
- What is the centre of origin of maize? Central America.
- What is the main purpose of mulching? Conserve soil moisture and suppress weeds.
- What is the primary cause of desertification? Overgrazing and deforestation.
- What is the ideal sowing time for wheat in India? November–December.
- What is the main benefit of green manuring? Improves soil fertility.
- What is the centre of origin of sorghum? Africa.
- What is the primary goal of precision agriculture? Optimize resource use through technology.
- What is the main type of soil in India? Alluvial soil.
- What is the purpose of terracing in agriculture? Prevent soil erosion on steep slopes.
- What is the main source of potassium in soil? Feldspar minerals.
- What is the centre of origin of potato? South America.
- What is the primary advantage of drip irrigation? Water efficiency.
- What is the main cause of soil salinity? Excessive irrigation.
- What is the ideal row spacing for rice? 20–25 cm.
- What is the main purpose of intercropping? Maximize land use and reduce pest risk.
- What is the centre of origin of sugarcane? New Guinea.
- What is the primary benefit of biofertilizers? Enhance soil fertility naturally.
- What is the main weed in wheat fields? Phalaris minor.
- What is the purpose of a crop weather advisory? Guide farmers on weather-based decisions.
- What is the centre of origin of chickpea? Mediterranean region.
- What is the main advantage of no-till farming? Reduces soil erosion.
- What is the primary source of energy for plants? Sunlight.
- What is the main purpose of soil testing? Determine nutrient deficiencies.
- What is the centre of origin of soybean? East Asia.
- What is the primary cause of waterlogging? Poor drainage.
- What is the main benefit of crop diversification? Reduces economic risk.
- What is the centre of origin of cotton? India and Africa.
- What is the primary role of nitrogen in plants? Promotes leaf growth.
- What is the main purpose of a windbreak? Reduce wind erosion.
- What is the centre of origin of groundnut? South America.
- What is the primary advantage of organic manure? Improves soil structure.
- What is the main weed in rice fields? Echinochloa crus-galli.
- What is the purpose of a seed village? Promote quality seed production.
- What is the centre of origin of mustard? Mediterranean region.
- What is the primary benefit of sprinkler irrigation? Uniform water distribution.
- What is the main cause of soil compaction? Heavy machinery use.
- What is the centre of origin of sunflower? North America.
- What is the primary role of phosphorus in plants? Promotes root and flower development.
- What is the main purpose of a cover crop? Prevent soil erosion and improve fertility.
- What is the centre of origin of pearl millet? West Africa.
- What is the primary advantage of furrow irrigation? Cost-effective for row crops.
- What is the main weed in maize fields? Amaranthus spp.
- What is the purpose of a crop ideotype? Optimize yield under specific conditions.
- What is the centre of origin of pigeon pea? India.
- What is the primary benefit of vermicomposting? Produces nutrient-rich compost.
- What is the main cause of nutrient leaching? Excessive rainfall or irrigation.
- What is the centre of origin of sesame? Africa.
- What is the primary role of potassium in plants? Enhances disease resistance.
- What is the main purpose of a trap crop? Attract pests away from main crops.
- What is the centre of origin of lentil? Near East.
- What is the primary advantage of laser land leveling? Improves irrigation efficiency.
- What is the main weed in sugarcane fields? Cyperus rotundus.
- What is the purpose of a crop calendar? Plan agricultural activities based on seasons.
- What is the centre of origin of jute? India.
- What is the primary benefit of integrated nutrient management? Balances chemical and organic fertilizers.
- What is the main cause of soil acidity? Leaching of basic cations.
- What is the centre of origin of flax? Mediterranean region.
- What is the primary role of calcium in plants? Strengthens cell walls.
- What is the main purpose of a buffer strip? Reduce runoff and erosion.
- What is the centre of origin of cowpea? Africa.
- What is the primary advantage of fertigation? Precise nutrient delivery through irrigation.
- What is the main weed in cotton fields? Xanthium strumarium.
- What is the purpose of a seed certification? Ensure seed quality and purity.
- What is the centre of origin of tobacco? South America.
- What is the primary benefit of crop residue management? Enhances soil organic matter.
- What is the main cause of soil alkalinity? Accumulation of sodium salts.
- What is the centre of origin of castor? Africa.
- What is the primary role of magnesium in plants? Component of chlorophyll.
- What is the main purpose of a silt pit? Trap sediment in runoff water.
- What is the centre of origin of safflower? Middle East.
- What is the primary advantage of relay cropping? Increases cropping intensity.
- What is the main weed in soybean fields? Chenopodium album.
- What is the purpose of a tillage tool in no-till systems? Break surface compaction.
- What is the centre of origin of rye? Southwest Asia.
- What is the primary benefit of crop scouting? Early detection of pests and diseases.
- What is the main cause of soil degradation? Overcultivation and deforestation.
- What is the centre of origin of oats? Asia Minor.
- What is the primary role of sulfur in plants? Protein synthesis.
- What is the main purpose of a check dam? Control water flow and erosion.
- What is the centre of origin of mung bean? India.
- What is the primary advantage of strip cropping? Reduces wind and water erosion.
- What is the main weed in groundnut fields? Cynodon dactylon.
- What is the purpose of a seed treatment? Protect seeds from pests and diseases.
- What is the centre of origin of barley? Asia and Ethiopia.
- What is the primary benefit of agroforestry? Combines trees with crops for sustainability.
- What is the main cause of soil infertility? Nutrient depletion.
- What is the centre of origin of horse gram? India.
- What is the primary role of zinc in plants? Enzyme activation.
- What is the main purpose of a grassed waterway? Prevent gully erosion.
- What is the centre of origin of finger millet? East Africa.
- What is the primary advantage of ridge planting? Improves drainage in wet soils.
- What is the main weed in chickpea fields? Orobanche spp.
- What is the purpose of a crop growth model? Predict yield under varying conditions.
- What is the centre of origin of black gram? India.
- What is the primary benefit of soil mulching? Conserves moisture and regulates temperature.
- What is the main cause of soil crusting? Heavy rainfall on bare soil.
- What is the centre of origin of foxtail millet? China.
- What is the primary role of boron in plants? Cell wall formation.
- What is the main purpose of a soil probe? Collect soil samples for testing.
- What is the centre of origin of green gram? India.
- What is the primary advantage of crop insurance? Protects farmers from yield losses.
- What is the main weed in mustard fields? Argemone mexicana.
- What is the purpose of a soil health card? Provide nutrient status and recommendations.
- What is the centre of origin of linseed? Mediterranean region.
- What is the primary benefit of bio-pesticides? Environmentally safe pest control.
- What is the main cause of soil pollution? Excessive pesticide use.
- What is the centre of origin of kodo millet? India.
- What is the primary role of iron in plants? Chlorophyll synthesis.
- What is the main purpose of a runoff management system? Reduce water erosion.
- What is the centre of origin of proso millet? Central Asia.
- What is the primary advantage of crop monitoring drones? Precision pest and nutrient management.
- What is the main weed in pigeon pea fields? Ageratum conyzoides.
- What is the purpose of a soil moisture sensor? Monitor water availability for irrigation.
- What is the centre of origin of lucerne? Southwest Asia.
- What is the primary benefit of crop diversification? Enhances ecosystem resilience.
- What is the main cause of soil subsidence? Over-extraction of groundwater.
- What is the centre of origin of berseem? Mediterranean region.
- What is the primary role of manganese in plants? Photosynthesis activation.
- What is the main purpose of a contour bund? Slow down water runoff.
- What is the centre of origin of little millet? India.
- What is the primary advantage of soil amendments? Improve soil physical properties.
- What is the main weed in sunflower fields? Parthenium hysterophorus.
- What is the purpose of a crop variety trial? Evaluate performance of new varieties.
- What is the centre of origin of guar? India.
- What is the primary benefit of conservation agriculture? Sustains soil health and productivity.
- What is the main cause of soil desiccation? Prolonged drought.
- What is the centre of origin of cluster bean? India.
- What is the primary role of copper in plants? Enzyme function.
- What is the main purpose of a farm pond? Store rainwater for irrigation.
- What is the centre of origin of moth bean? India.
- What is the primary advantage of crop rotation with legumes? Fixes atmospheric nitrogen.
- What is the main weed in sesame fields? Trianthema portulacastrum.
- What is the purpose of a weather-based crop advisory? Optimize planting and harvesting.
- What is the centre of origin of rapeseed? Mediterranean region.
- What is the primary benefit of integrated weed management? Reduces herbicide reliance.
- What is the main cause of soil toxicity? Heavy metal accumulation.
- What is the centre of origin of niger? Ethiopia.
- What is the primary role of molybdenum in plants? Nitrogen fixation.
- What is the main purpose of a soil conservation plan? Protect soil from degradation.
- What is the centre of origin of buckwheat? Central Asia.
- What is the primary advantage of hydroponics? Soilless crop production with high yields.
- What is the main weed in lentil fields? Vicia hirsuta.
- What is the purpose of a crop residue cover? Maintain soil moisture and reduce erosion.
- What is the centre of origin of amaranth? Central America.
- What is the primary benefit of soil aeration? Enhances root growth.
- What is the main cause of soil structure decline? Continuous tillage.
- What is the centre of origin of quinoa? Andean region.
- What is the primary role of chloride in plants? Osmotic regulation.
- What is the main purpose of a crop water requirement chart? Guide irrigation scheduling.
- What is the centre of origin of chia? Central America.
- What is the primary advantage of climate-smart agriculture? Adapts to changing climatic conditions.
Conclusion
This agronomy quiz with answers is a powerful tool for students and aspirants preparing for agricultural exams or seeking to deepen their knowledge. With 200 unique one-liner questions covering critical topics like soil science, crop management, and sustainable farming, you’re well-equipped to excel. Keep practicing, stay curious, and use this quiz to sharpen your skills. Bookmark this page and revisit it to ensure you’re ready for any agronomy challenge. Happy studying!
Disclaimer
The information provided in this agronomy quiz with answers is sourced from publicly available educational resources and is intended for informational and educational purposes only. While care has been taken to ensure accuracy, we do not guarantee the completeness or correctness of the content. Users are advised to cross-reference with official study materials for exam preparation. The authors and publishers are not liable for any errors or consequences arising from the use of this quiz.
Also Read: 200+ Soil Science MCQs for Competitive Exams and General Knowledge