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FEBRUARY > CROP PROTECTION > Flashcards

CROP PROTECTION Flashcards

1
Q

A harmful alteration of the normal physiological and
biochemical development of a plan

A

Disease

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2
Q

The science which deals with the nature, causes, and
management of plant diseases.

A

Plant Pathology

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3
Q

Which statement on the effective use of protective
fungicide is TRUE?

A

a) Used too little fungicide at the right time and at the right way.
b) Used too much fungicide at the right time and at the right way.
c) Used the exact amount of fungicide at the right time and the right way.

d) Used exact amount of fungicide at any time at anyway.

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4
Q

Which plant grow on another plant are not parasitic? They
usually derived physical support from the host and obtain
nourishment from the air and other sources.

A

Epiphytes

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5
Q

If you use chemical pesticides, how many days are you
required before flushing the pond water into the river?

A

5-7 days

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6
Q

Which time of insects life goes through the four (4) stages
of development?

A

Complete metamorphosis

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7
Q

To avoid snail infestation, farmers can pick snails and feed
them to ______ in the field.

A

Ducks

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8
Q

Which caterpillar roll a leaf into a tube and feed within the
tied leaves?

A

Leaf folders

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9
Q

How do we control scale insects on plant leaves? All are advised except:

A

a. Pick off infected leaves and burn them
b. Clean off insects from leaves with a cotton ball soaked in alcohol
c. Spray leaves with water and alcohol
d. Apply water with salt on infected leaves. A

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10
Q

Which pest is caused by fungi that attack the basal parts of
the plant causing yellowing and drying of leaves?

A

Fesarium Bulb rot

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11
Q

What is considered as the most destructive group of insect
pest found in Asia that causes low rice yields?

A

Rice stern borers

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12
Q

Which tiny insect lacerate plant cells and suck plant
juices?

A

Thrips

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13
Q

Which insect pest of sesame causes the leaves and young
shoots to become wrinkled and deformed as a result of feeding?

A

Aphid

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14
Q

What classification of disease affecting cattle and carabaos
is comprised of anthrax, black leg, brucellosis, hemorrhagic
septicemia, mastitis and tuberculosis?

A

Bacteria

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15
Q

To control the attack of rusts in plants you have to:

A

a. Spray with soap and alcohol daily and pesticides weekly
b. Spray with alcohol and salt every other day
c. Destroy the fungi by applying salt water daily
d. Provide good air circulation and spray with fungicide at weekly intervals

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16
Q

We plant potatoes with _______ to discourage bean beetles:

A

Beans

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17
Q

Which is not a biological method of controlling insects?

A

Use of Malathion

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18
Q

What kind of bacteria thrives when there is absence of
oxygen?

A

Anaerobic

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19
Q

Insect pest known as _________ attacks crops and cuts plants
at ground level.

A

Cutworms

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20
Q

What is an example of Integrated Pest Management (IPM) that
prevents corn infestation of insects?

A

a. Use of chemical control substances prices to planting
b. Planting corn varieties year round
c. Spraying strong insecticides from vegetative to reproductive stage
d. Release of 100 trichocards (trichogramma egg parasites)

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21
Q

Non-parasitic plant diseases are due to:

A

a. Unfavorable soil-water relations
b. Lack or excessive of minerals
c. Environmental factors

d. Presence of nematodes

22
Q

Which pest take their food by biting off and eating the
leaves and other parts of the plants?

A

Chewing insects

23
Q

All of the following insect destroy mungbeans, apple, sitaw,
and soy beans, except:

A

a. Aphids

b. Leafhoppers
c. Caterpillars
d. Bean flies

24
Q

What is the insect vector rice disease called “tungro”?

A

Nephotettix virecena

25
Q

What kind of organism injures or damages plants?

A

Pest

26
Q

Which of these are vegetable diseases?

A

Leaf mosaic, powdery mildew, anthracnose

27
Q

Which fungus disease cause discolored paches on foliage,
dropsy, stlaks and prematurely rooting fruits?

A

Botrytis

28
Q

Which plant diseases affect the healthy conditions of plants
and characterized as infectious organisms too small to be seen
by the naked eye and easily transmitted by sucking insects?

A

Viruses

29
Q

Which of the following will contribute to effective pest
control when properly implemented?

A

Parasitic control

30
Q

What insect pest attacks the crop and cuts plants at ground
level?

A

Cutworm

31
Q

Which of the symptom of the fruit crop called ringspot?

A

Appearance of small nearly circular, yellow spots that urn into brown, corky spots with yellow halo on the leaves

32
Q

The symptom characterized by extensive necrotic area.

A

Blight

33
Q

t is used to control weeds?

A

Herbicide

34
Q

It is the management of pest by manipulation of the
environment or implementation of preventative practices such as
crop rotation?

A

Cultural control

35
Q

Biological control involves the utilization of predators,
parasites, and pathogens to manage pest population below
economic injury level?

A

Natural enemies

36
Q

Which crop disease is distinguished by the appearance of
rings of different shades of brown, green, yellow spots on the
leaves?

A

Leaf spot

37
Q

Yellowing of leaves and shoots due to lack of light?

A

Etiolation

38
Q

The use of tools, implements and machines to reduce or
eliminate weeds, pest and diseases?

A

Mechanical control

39
Q

The following are causes of disease, EXCEPT _______.

A

Bacteria
b. Fungi
c. Viruses
d. Blight

40
Q

Which fungal disease of plants causes seedlings to rot at
the soil level?

A

Damping

41
Q

Which plant disease causes round swelling or growth on
plants?

A

Galls

42
Q

Which plant disease blocks the uptake of water?

A

Root rot

43
Q

Which plant disease causes small spots that occur mainly on
the underneath side of leaves?

A

Rust

44
Q

Which plant disease causes open wounds on woody plant stem?

A

Canker

45
Q

Which crop disease causes blisters that burst open releasing
black spores?

A

Smut

46
Q

Which crop disease on leaf surface as white, gray or purple
spots?

A

Mildew

47
Q

Which crop disease is distinguish by the appearance of rings
of different shades of brown, green, or yellow that make spot on
the leaves?

A

Leaf spots

48
Q

which insect pest tear, grind or chew their food?

A

Chewing insects

49
Q

Which is a way of controlling plant disease by isolating a
patch of or a single diseases plant?

A

Quarantine

50
Q

Which is a combination of two or more methods of controlling
disease to yield a higher chance of effectiveness?

A

Integrated

FEBRUARY (2 decks)

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