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- Each Quizzes are base on your agriculture exam pattern
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- Each quize will have 20 mcqs & 30 sec time to attempt each question
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Soil science
✔️ Inherent capacity of soil to supply adequate nutrients for plant growth is called - Soil fertility
✅Capacity of soil to produce in terms of yields is called - Soil Productivity
✅Soil fertility+ management includes in - Soil productivity
✅Relative proportion of soil particles is called - Soil texture
✅The arrangement of soil particles is called - Soil structure
✅Size of Sand Particle - 0.2 to 0.02
✅ Size of Silt Particle - 0.02 to 0.002
✅Size of Clay Particle - < 0.002
✅ Size of gravel - > 2mm
✅Which structure is better for crop cultivation - Crumby
✅ Pore space is occupied by - water and rain
✅Total pore space is more in - clay soil (50-60%)
✅ Total pore space is low in - sand soil (30-40%)
✅Weight of soil per unit volume is called - Bull density
✅The Bulk density of common soil is - 1.6g/cm3
✅ Particle density is also known as - true density
✅Weight of solid portion of soil per unit volume is called – Particle density
✅The Particle density of common soil is - 2.6 g/cm3
✅CO2 concentration in soil air is - over 0.3%
✅CO2 concentration in soil air is ……..time higher than atmosphere - 10
✅Well decomposed organic matter is called as - Humus
✅Humus is also known as - Lingo protein
✅Carbon: Nitrogen (C:N) ratio for saw dust 400:1
✅ C:N ratio for Legume – 20- 30:1
✅C:N ratio for FYM -10:1
✅The soil moisture held by the soil against gravitation at energy status of -0.1 to 0.33 bar is called - Field Capacity
✅ The soil moisture held at energy status of - 0.33 bar to –15 bar is called - Available soil moisture
✅Urea is a - Organic fertilizer
✅CAN (calcium ammonium nitrate) is a - Neutral fertilizer
✅ Recommended ratio of NPK for cereal crops is - 4:2:1
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