R.K. Sharma Test 12 — Agri Master Mind

An interception system is used when the slope is _______; it is also known as a slope ditch system.
  • < 2 %
  • > 2 %
  • < 1 %
  • > 1 %
The range of capillary water in soil is from -1/3 bar to _______.
  • -15 bar
  • -21 bar
  • -31 bar
  • -30 bar
Statement 1: Less compact soils have a higher total pore space. Statement 2: Less aggregated soils have more water retention.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is incorrect & statement 2 is correct
  • Statement 1 is correct and statement 2 is incorrect
Which of the following crops has the highest water requirement?
  • Cotton
  • Groundnut
  • Soybean
  • Potato
A mini watershed covers an area of _____.
  • 100-1000 ha
  • 10-1000 ha
  • 10-100 ha
  • 1-10 ha
Which of the following is wrong about drip irrigation?
  • Salt concentration is less
  • Land leveling is necessary
  • Water is maintained at field capacity
  • All are correct statements
The formula for water requirement (WR) is ______?
  • WR = IR + ER + S
  • WR = ER + IR - S
  • WR = ER - IR + S
  • None of the following
The unit of water use efficiency is ______?
  • kg/ha mm
  • Mg/ha cm
  • kg/ha cm
  • Mg/ha mm
The process by which any liquid escapes from the surface into the atmosphere in a gaseous state is known as ______.
  • Evaporation
  • Transpiration
  • Evapotranspiration
  • Convection
For sugarcane crops, which irrigation method is most suitable?
  • Drip irrigation
  • Sprinkler irrigation
  • Corrugation
  • Surge irrigation
Statement 1: Sensitive stages for irrigation in sunflower 🌻 are head formation & early grain filling. Statement 2: Sensitive stages of irrigation in mustard are flowering & siliqua development.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is incorrect & statement 2 is correct
  • Statement 1 is correct and statement 2 is incorrect
Which of the following is NOT an effect of poor drainage?
  • Accumulation of excess soluble salts in a deep water table
  • Oxygen diffusion is 10,000 times less than in running water
  • Redox potential is -400 mv
  • All are correct effects of poor drainage
Field capacity is the ______ limit of available water.
  • Lower
  • Upper
  • Both A & B
  • Medium
In poorly drained soil, which of the following does NOT accumulate?
  • CO<sub>2</sub>
  • CH<sub>4</sub>
  • O<sub>2</sub>
  • HCO<sub>3</sub>
Laterals are provided only on one side of the mains in the ______ system.
  • Gridiron system
  • Herringbone system
  • Double main system
  • All of the above
If residual sodium carbonate is > 2.5 meq/L, the water is considered ______.
  • Safe
  • Marginal
  • Not suitable for irrigation
  • All of the above
For open ditches in small areas, the drainage coefficient (DC) ranges from ______.
  • 0.6 to 2.5 cm
  • 1 to 1.5 cm
  • 0.5 to 1 cm
  • 1.5 to 2.5 cm
The presence of low soluble salts in the soil _______ osmotic potential, resulting in _______ available water content.
  • Decreases; low
  • Increases; high
  • Remains constant
  • Both A & B
______ textured soil has more water holding and retention capacity, so more water availability.
  • Fine
  • Coarse
  • Medium textured
  • All of the above
1 ha cm is equal to how many liters?
  • 1000 L
  • 10,000 L
  • 100,000 L
  • 100 L
Mole drains are suitable for ______ soil.
  • Clay soil
  • Sandy soil
  • Organic soil
  • All of the above
Statement 1: Field capacity (FC) usually occurs between 1/10 bar (heavy soil) and 1/3 bar (coarse soil). Statement 2: FC is also termed the drained upper limit.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is incorrect & statement 2 is correct
  • Statement 1 is correct and statement 2 is incorrect
If the sodium adsorption ratio (SAR) is 18-26, then the sodium hazard is classified as ______.
  • High
  • Medium
  • Low
  • Very high
Drip irrigation saves how much water (percentage)?
  • 40-50
  • 60-70
  • 30-50
  • 40-60
Which of the following is NOT a type of surface drainage?
  • Bedding system
  • Interception system
  • Parallel system
  • None
Find the crop water use efficiency if the crop yield is 50 kg/ha and evapotranspiration is 5 mm.
  • 10
  • 100
  • 1000
  • 0.1
According to the US Soil Salinity Laboratory grouping of irrigation water, what is the EC of medium salinity water?
  • 250-750
  • 750-2250
  • 2250-5000
  • 150-250
Statement 1: High soil depth results in high available water content. Statement 2: Saturation occurs when all macropores are filled with water only.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 2 is incorrect & statement 1 is correct
  • Statement 2 is correct and statement 1 is incorrect
The word "watershed" was introduced in ________ ?
  • 1920
  • 1930
  • 1960
  • 1950
Statement 1: A watershed is that water area which drains or contributes runoff to a common outlet. Statement 2: A watershed is defined as a geohydrological unit draining to a common point by a system of drains.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is incorrect & statement 2 is correct
  • Statement 1 is correct and statement 2 is incorrect