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Cca Exam, 81 Questions With 100% Correct Answers 2024.
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Cca Exam, 81 Questions With 100% Correct Answers 2024.
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Cca Exam, 81 Questions With 100%Correct Answers 2024.
Are all Foliar herbicides systemic?
no
What are herbicides called that effect certain plants more than others?
Selective herbicides
the cotton bollworm and the tobacco budworm feed during what stage?
larva stage
what plants will the cabbage looper attack?
Cotton, Soybeans, and Cabbage
The boll weevil has what kind of mouth parts?
chewing
The boll weevil goes through complete metamorphosis which consists of:
egg, larva, pupa, and adult
Army worms move into wheat fields:
in groups of 30 or more
predators of the spider mite include:
predacious mites and thrips, minute pirate bugs, and diseases
How many days does it take to complete the life cycle of a rice stink bug?
25 days
Which wheat disease can be transferred by aphids?
Barley yellow dwarf
when can the sorghum midge fly infest sorghum?
in flowering stage
How many pro legs does the velvet bean caterpillar have?
4
What damage does the velvet bean caterpillar inflict?
, eats foliage
What weed looks like rice during seedling stage?
Barnyard grass (BYG)
what types of tips are best for spraying under foliage?
off center flat fan
What does a surfactant do?
reduces surface tension
What happens when mixing chemicals with liquid fertilizer?
possible compatibility problems and can aid in foliar weed control
When is the cocklebur most damaging to the soybean?
1st 4 weeks after emerging
how does soil lose fertility?
Leaching, denitrification, and volatilization.
how do unused pesticides effect the environment?
they release gases in to the air when they break down.
What does LD 50 mean?
that 50% of the pest treated are killed
pre emergence means:
Pre-before crop or weed
post emergence means:
post after crop or weed
What name do we know chemicals by? && Is it the same as the compound that it is made up of?
Common, No
If you treat nematodes in furrow, how long will it last?
2-3 Weeks
What effects sulfur availability?
Apply sulfur on sandy and silt loam soils with less than 1% OM
which leaves does nitrogen deficiency show up on first in rice?
Older leaves first
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