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