MCQs Agronomy-47 Posted on December 7, 2024August 30, 2025Author agropublishers 0 1. Which of the following best describes effective rainfall? Rainfall that is absorbed by the soil and contributes to plant growth Rainfall that exceeds the infiltration capacity of the soil and runs off Rainfall that evaporates before reaching the ground and does not contribute to soil moisture Total rainfall in an area 2. Base temperature for rice growth is ———— °C 10 °C 5 °C 12 °C 7 °C 3. Measurement of ——- is the primary function of a tensiometer Soil moisture levels Rainfall intensity Atmospheric pressure Soil temperature 4. The primary mechanism by which soil particles attract cations is ———– Hydrogen bonding Covalent bonding Van der Waals forces Electrostatic force 5. A hygrometer is primarily used to measure ——– Relative humidity Wind speed Atmospheric temperature Atmospheric pressure 6. Field Capacity is the ———– Maximum amount of water a soil can hold after saturation and drainage Total amount of water in the soil before saturation Minimum water content needed for plant survival Amount of water lost through evaporation 7. ——— can significantly increase the Cation Exchange Capacity of soil Excessive tillage operation Addition of organic matter Minor change in soil pH Addition of sand 8. ———— of the following is NOT a factor that primarily influences CEC Soil organic matter content Soil texture Soil temperature Soil pH 9. ——- ———— ——–constitute over 90% of a plant’s dry weight Nitrogen, phosphorus, potassium Magnesium, phosphorus, potassium Nitrogen, sulfur, calcium Carbon, hydrogen, oxygen 10. How does microclimate differ from macroclimate? Microclimate is the climate of a mountain, while macroclimate is the climate of a valley Microclimate is the climate of a large region, while macroclimate is the climate of a small area Microclimate is the climate of a city, while macroclimate is the climate of a rural area Microclimate is the climate of a small area, while macroclimate is the climate of a large region Loading …
