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WorksheetsFertiliser Rate and Types Quiz
Total questions: 35
Worksheet time: 14mins
Fertiliser rate refers to the
quantity of fertiliser applied to a given area of land
quality of fertiliser used on the farm
percentage of nutrients in fertiliser
number of fertiliser applications per season
One major consequence of fertiliser over-application is
nutrient deficiency
environmental pollution
delayed crop maturity
improved soil structure
Which of the following is NOT a factor influencing fertiliser rate?
Soil fertility status
Crop nutrient requirement
Fertiliser formulation
Colour of the fertiliser
Fertiliser rate is commonly expressed in all EXCEPT
kilograms per hectare
grams per plant
tonnes per rainfall season
bags per hectare
Compost and poultry droppings are examples of
inorganic fertilisers
organic fertilisers
compound fertilisers
mixed fertilisers
A straight fertiliser is one that
contains two or more nutrients in fixed proportion
supplies only one primary nutrient
is formed by mixing organic materials
contains living microorganisms
NPK 15-15-15 is classified as a
mixed fertiliser
straight fertiliser
bio-fertiliser
compound fertiliser
Which fertiliser supplies potassium mainly in the form of K₂O?
Urea
Single superphosphate
Muriate of potash
Calcium ammonium nitrate
Bio-fertilisers primarily function by
fixing nutrients in the soil permanently
increasing nutrient availability through microorganisms
replacing chemical fertilisers completely
supplying nutrients in high concentration
Rhizobium bacteria are mainly associated with
nitrogen fixation
phosphorus solubilisation
potassium release
organic matter decomposition
The basic formula for fertiliser rate calculation is
Fertiliser required × Nutrient content ÷ 100
Nutrient required ÷ Fertiliser required × 100
Nutrient required ÷ Nutrient content × 100
Fertiliser content ÷ Nutrient required
If a fertiliser contains 15% nitrogen, then 100 kg of the fertiliser supplies
85 kg N
15 kg N
10 kg N
1.5 kg N
Which of the following is an advantage of organic fertilisers?
High nutrient concentration
Immediate nutrient release
Improvement of soil structure
Fixed nutrient composition
Which statement about inorganic fertilisers is correct?
They improve soil structure directly
They release nutrients slowly
Their nutrient content is not defined
They supply nutrients in readily available forms
Conversion from elemental K to K₂O is necessary because
plants absorb potassium only as K₂O
fertiliser labels are based on oxide forms
K₂O contains less potassium than K
soils cannot retain elemental K
Excessive fertiliser use may lead to
improved microbial balance
higher fertiliser efficiency
fertiliser burn and yield reduction
increased organic matter
Fertiliser rate refers only to the nutrient percentage of fertiliser.
True
False
Organic fertilisers generally improve soil microbial activity.
True
False
Straight fertilisers contain more than one primary nutrient.
True
False
Bio-fertilisers are environmentally friendly when properly managed.
True
False
Fertiliser over-application can result in economic loss.
True
False
NPK 15-15-15 is an example of a straight fertiliser.
True
False
Inorganic fertilisers release nutrients slowly through decomposition.
True
False
Fertiliser rate calculation helps in achieving optimum crop yield.
True
False
Soil fertility status does not influence fertiliser rate determination.
True
False
Organic fertilisers are derived from plant and (a) materials.
Urea contains (a) percent nitrogen.
NPK 15-15-15 is a (a) fertiliser.
Muriate of potash supplies potassium in the form of (a) .
Bio-fertilisers contain living (a) that enhance nutrient availability.
Over-application of fertiliser may lead to (a) pollution.
Fertiliser rate calculation ensures (a) nutrient supply to crops.
Fertilisers are broadly classified into organic, inorganic, and (a) fertilisers.
Single superphosphate supplies phosphorus in the form of (a) .
Muriate of potash is a major source of (a) .
