TSU Horticulture-1301 Final Exam
Steps of diagnosing plant disorders - ANS-Identify the affected plant and determine the
cause of the problem
Metamorphosis - ANS-The process of transformation from an immature form to an adult
form in two or more distinct stages.
Complete metamorphosis - ANS-Egg, larva, pupa (dormant), and adult.
Incomplete metamorphosis: - ANS-Egg, nymphal stages, and adult.
Chewing Insects - ANS-Eat plant parts rapidly (larvae), becoming larger and more
damaging as they mature.
Sucking Insects - ANS-They feed on the sap by inserting their mouthparts into the
phloem.
Caterpillars, Grubs, Borers, Leaf miners, Grasshoppers, Beetles, Earwigs, Snails, and
Slugs are all examples of... - ANS-Chewing Insects
Aphids, Whiteflies, Mealybugs, Scales, Mites, Thrips, and Nematodes (Eelworms) are
all examples of... - ANS-Sucking Insects
Frost damage - ANS-Overnight wilting on the uppermost leaves and buds.
Winterkill - ANS-The partial or total death of normally hardy perennial plants due to cold
temperatures.
Drought - ANS-Wilting is the main symptom of drought and watering revives a plant in a
drought condition.
Soil compaction - ANS-Constant foot or equipment traffic causes soil compaction
around plants. The air spaces normally present in the soil are compressed, and water
absorption and air penetration are inhibited.
Allelopathy - ANS-It is the injury of one plant by another via the excretion of toxic
substances.
, Treating environmental plant disorders - ANS-Correct the condition harming the plant of
find a plant that can tolerate the situation. Good plant selection can often prevent these
disorders.
Excess salts, drought, soil compaction, and pH are examples of... - ANS-Environmental
issues that can be corrected
Air pollution, winterkill, and reflected heat problems are examples of... -
ANS-Environmental issues that cannot be corrected
Cultural disease control - ANS-Using plant care techniques that minimize disease
infection and spread
Sanitation - ANS-It involves removing all disease harboring materials to reduce the
population of microorganisms.
Weeding - ANS-Weed control; Weeds can take nutrients from your plants and can
spread Rust fungi.
Pruning - ANS-A valuable control technique for localized disease such as gall, wilt, and
canker.
The infected portion of the plant should be pruned and burned.
Roguing - ANS-It involves pulling out diseased plants to stop the spread to others.
It is valuable for annual plants or when only a few plants are infected .
Crop Rotation - ANS-It involves planting a different species in an area each year instead
of the same one repeatedly.
It is a valuable control for soil borne diseases.
Resistant Cultivars and Species - ANS-Horticultural crops, flowers, and landscape
plants that have resistance to diseases imparted by breeding.
It is one of the best disease control techniques.
Plant Selection and Culture - ANS-Select plants that are not seriously affected by
diseases and that are well adapted to the environment in which they are to grow.
Steps of diagnosing plant disorders - ANS-Identify the affected plant and determine the
cause of the problem
Metamorphosis - ANS-The process of transformation from an immature form to an adult
form in two or more distinct stages.
Complete metamorphosis - ANS-Egg, larva, pupa (dormant), and adult.
Incomplete metamorphosis: - ANS-Egg, nymphal stages, and adult.
Chewing Insects - ANS-Eat plant parts rapidly (larvae), becoming larger and more
damaging as they mature.
Sucking Insects - ANS-They feed on the sap by inserting their mouthparts into the
phloem.
Caterpillars, Grubs, Borers, Leaf miners, Grasshoppers, Beetles, Earwigs, Snails, and
Slugs are all examples of... - ANS-Chewing Insects
Aphids, Whiteflies, Mealybugs, Scales, Mites, Thrips, and Nematodes (Eelworms) are
all examples of... - ANS-Sucking Insects
Frost damage - ANS-Overnight wilting on the uppermost leaves and buds.
Winterkill - ANS-The partial or total death of normally hardy perennial plants due to cold
temperatures.
Drought - ANS-Wilting is the main symptom of drought and watering revives a plant in a
drought condition.
Soil compaction - ANS-Constant foot or equipment traffic causes soil compaction
around plants. The air spaces normally present in the soil are compressed, and water
absorption and air penetration are inhibited.
Allelopathy - ANS-It is the injury of one plant by another via the excretion of toxic
substances.
, Treating environmental plant disorders - ANS-Correct the condition harming the plant of
find a plant that can tolerate the situation. Good plant selection can often prevent these
disorders.
Excess salts, drought, soil compaction, and pH are examples of... - ANS-Environmental
issues that can be corrected
Air pollution, winterkill, and reflected heat problems are examples of... -
ANS-Environmental issues that cannot be corrected
Cultural disease control - ANS-Using plant care techniques that minimize disease
infection and spread
Sanitation - ANS-It involves removing all disease harboring materials to reduce the
population of microorganisms.
Weeding - ANS-Weed control; Weeds can take nutrients from your plants and can
spread Rust fungi.
Pruning - ANS-A valuable control technique for localized disease such as gall, wilt, and
canker.
The infected portion of the plant should be pruned and burned.
Roguing - ANS-It involves pulling out diseased plants to stop the spread to others.
It is valuable for annual plants or when only a few plants are infected .
Crop Rotation - ANS-It involves planting a different species in an area each year instead
of the same one repeatedly.
It is a valuable control for soil borne diseases.
Resistant Cultivars and Species - ANS-Horticultural crops, flowers, and landscape
plants that have resistance to diseases imparted by breeding.
It is one of the best disease control techniques.
Plant Selection and Culture - ANS-Select plants that are not seriously affected by
diseases and that are well adapted to the environment in which they are to grow.
