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 evaporates before reaching the ground and does not contribute to soil moisture Total rainfall in an area Rainfall that exceeds the infiltration capacity of the soil and runs off 2. Field Capacity is the ———– Amount of water lost through evaporation 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 3. Measurement of ——- is the primary function of a tensiometer Soil moisture levels Soil temperature Rainfall intensity Atmospheric pressure 4. ———— of the following is NOT a factor that primarily influences CEC Soil pH Soil organic matter content Soil temperature Soil texture 5. Base temperature for rice growth is ———— °C 5 °C 7 °C 12 °C 10 °C 6. ——- ———— ——–constitute over 90% of a plant’s dry weight Magnesium, phosphorus, potassium Nitrogen, phosphorus, potassium Carbon, hydrogen, oxygen Nitrogen, sulfur, calcium 7. 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 8. The primary mechanism by which soil particles attract cations is ———– Electrostatic force Covalent bonding Hydrogen bonding Van der Waals forces 9. A hygrometer is primarily used to measure ——– Atmospheric temperature Wind speed Atmospheric pressure Relative humidity 10. ——— can significantly increase the Cation Exchange Capacity of soil Addition of organic matter Excessive tillage operation Addition of sand Minor change in soil pH Loading …
