Worksheetstest soil 2020
Total questions: 30
Worksheet time: 10mins
1. Define Essential Nutrient
A visual sign or condition that results from a deficiency: symptoms aids in diagnosing a deficiency
Element necessary for plant growth and reproduction, for example: nitrogen, phosphorus, and potassium
Plants require the essential elements in relatively large amounts
Plants need the essential elements in very small amounts
Define Deficiency
A visual sign or condition that results from a deficiency: symptoms aids in diagnosing a deficiency
Plant condition where an essential nutrient is not sufficiently available
Define Symptom
A visual sign or condition that results from a deficiency: symptoms aids in diagnosing a deficiency.
Plant condition where an essential nutrient is not sufficiently available.
Define Macronutrien
Plants need the essential elements in very small amounts
Plants require the essential elements in relatively large amounts
Micronutrient include
Sulfur, Potassium, Calcium
Chlorine, Iron, Manganese,
Which is the correct statement about function of nutrient Phosphorus (P) for plant growth.
Photosynthesis
Root growth
Plant turgor pressure maintenance
Which is the correct statement about function of nutrient Potassium (K) for plant growth.
Straw strength
Root growth
Plant turgor pressure maintenance
Which is the correct statement about function of nutrient Nitrogen (N) for plant growth
Straw strength
Photosynthesis
Root growth
Define organic fertilizer
Products of plants and animal residues
Comes from sources other than animals or plants
Has all three primary nutrients
Explain incomplete fertilizer
Fertilizers are enriched in nitrogen, phosphorus, and potassium
Fertilizers are composed of manure, fishmeal, or compost
Fertilizer does not have all three primary nutrients or 2 elements only
Which statement are correct about straight fertilizer
Contains only one of the primary nutrients
Contain more than one primary nutrients
30:0:15
NPK blue
A bag of 60 kg NPK fertilizer has the rate 30:20:5. Calculate (kg) how much N, P2O5and K2O in that fertilizer
18 kg N, 12 kg P2O5, 3 kg K2O
18 kg N, 16 kg P2O5, 3 kg K2O
18 kg N, 12 kg P2O5, 13 kg K2O
Choose TWO (2) fertilization methods
Broadcast
Mulching
Liming
Banding
Hydrogen (H+) and Aluminum(Al3+) cations are responsible for soil acidity.
True
False
OM decomposition are source of acidity in soil
True
False
Liming is important to raise pH
True
False
Liming will Stop microbial activity
True
False
Over lime -will cause some micronutrients to be unavailable
True
False
Drainage will increase depth of rooting
True
False
Drainage will increase soil erosion
True
False
Drainage will increase soil compaction
True
False
Mulch is a layer of material placed on the soil surface
True
False
Raindrops in dry environments that moves tiny particles of soil
Gully
Sheet
Splash
Rill
Uniform removal of soil from the surface of an area in thin layer occur on nearly level land or on sloping land
Gully
Sheet
Splash
Rill
Identify TWO (2) human factors that causing soil erosion.
Reforestation
Over-grazing
Construction activities
Crop Rotation
Slopes are made into flat step areas
Contour Ploughing
Terrace Farming
Strip Farming
Shelter Belts
Strips of grass are left to grow between the crops to breaks up the force of the wind. Different crops are planted and harvested at different times meaning that the amount of bare soil is minimised
Contour Ploughing
Terrace Farming
Strip Farming
Shelter Belts
Planting crops across the slope to reduces the flow of water (runoff) across the land surface.
Contour Ploughing
Terrace Farming
Strip Farming
Shelter Belts
Planting trees means that the roots hold soil and water and also as a wind break.
Contour Ploughing
Terrace Farming
Strip Farming
Shelter Belts
Determine THREE (3) methods of soils conservation
Reforestation
Saltation
Drainage
Installation of grasses
Deforestation
