CROP PROTECTION Flashcards
(50 cards)
A harmful alteration of the normal physiological and
biochemical development of a plan
Disease
The science which deals with the nature, causes, and
management of plant diseases.
Plant Pathology
Which statement on the effective use of protective
fungicide is TRUE?
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.
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.
Epiphytes
If you use chemical pesticides, how many days are you
required before flushing the pond water into the river?
5-7 days
Which time of insects life goes through the four (4) stages
of development?
Complete metamorphosis
To avoid snail infestation, farmers can pick snails and feed
them to ______ in the field.
Ducks
Which caterpillar roll a leaf into a tube and feed within the
tied leaves?
Leaf folders
How do we control scale insects on plant leaves? All are advised except:
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
Which pest is caused by fungi that attack the basal parts of
the plant causing yellowing and drying of leaves?
Fesarium Bulb rot
What is considered as the most destructive group of insect
pest found in Asia that causes low rice yields?
Rice stern borers
Which tiny insect lacerate plant cells and suck plant
juices?
Thrips
Which insect pest of sesame causes the leaves and young
shoots to become wrinkled and deformed as a result of feeding?
Aphid
What classification of disease affecting cattle and carabaos
is comprised of anthrax, black leg, brucellosis, hemorrhagic
septicemia, mastitis and tuberculosis?
Bacteria
To control the attack of rusts in plants you have to:
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
We plant potatoes with _______ to discourage bean beetles:
Beans
Which is not a biological method of controlling insects?
Use of Malathion
What kind of bacteria thrives when there is absence of
oxygen?
Anaerobic
Insect pest known as _________ attacks crops and cuts plants
at ground level.
Cutworms
What is an example of Integrated Pest Management (IPM) that
prevents corn infestation of insects?
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)
Non-parasitic plant diseases are due to:
a. Unfavorable soil-water relations
b. Lack or excessive of minerals
c. Environmental factors
d. Presence of nematodes
Which pest take their food by biting off and eating the
leaves and other parts of the plants?
Chewing insects
All of the following insect destroy mungbeans, apple, sitaw,
and soy beans, except:
a. Aphids
b. Leafhoppers
c. Caterpillars
d. Bean flies
What is the insect vector rice disease called “tungro”?
Nephotettix virecena
