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AGRONOMY EXAM FULLY VERIFIED AND APPROVED -8
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AGRONOMY EXAM FULLY VERIFIED AND APPROVED -8
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AGRONOMY EXAM FULLY VERIFIED AND APPROVED #8Polyculture is the cultivation of more than one crop species in various
Seasonal or field patterns. - correct answer True
Monoculture advantages are which of the following? Select all that apply. - correct
answer Easier to manage, producer has to contend with only one set of practices, can
be very specific in weed control and seed selection, industrialized nations have the
technology and know how to grow crops well, responsible for producing very large
quantities of food.
Disadvantage of Monoculture crop production systems? Select all that apply. - correct
answer susceptible to pests, diseases, and disasters. Lack of diversity means presence
of fewer number of natural enemies of plant pests, no insurance against adversity
(weather vagaries) like hail, flood, frost, drought
Polyculture advantage crop production systems? Select all that apply. - correct answer
Diversity of crops avoids susceptibility of a single crop to disease and insect damage,
greater tolerance to stress and avoidance of total crop loss, less dependent on nitrogen
fertilizers
Disadvantage of polyculture crop production systems? Select all that apply. - correct
answer Agronomic management is more complex, greater diversity in host plants may
mean greater diversity in diseases and pests, requires more labor and equipment
Inter cropping, relay planting, and crop rotation are all types of polycultures. - correct
answer True
Intercropping uses the "three sisters" style of planting. - correct answer True
What are the "three sisters"? - correct answer corn, beans, squash
Relay cropping (overlap planting) is the cropping system in which one
Crop is seeded into another standing crop that is near harvesting - correct answer True
One crop is planted before the original is harvested is what type of crop
Production system? - correct answer relay cropping
In crop rotation a deep-rooted crop should be followed by a _______
Rooted crop - correct answer shallow
In crop rotation a _____ rooted crop should be followed by a shallow rooted crop -
correct answer deep
Alternate between crops with a _____ root biomass and those with low
, Root biomass (high root biomass provides food for soil microorganisms). - correct
answer high
You should include green manure and catch crops to protect from soil erosion and
_______________ - correct answer nutrient loss
Include nitrogen-fixing crops and alternate with crops with _______ demand - correct
answer high nitrogen damaged
Soil is the most important natural resource on planet earth. - correct answer True
Soil is defined as... - correct answer is a thin layer of mineral matter, organic matter, air
and water which surround the earth in a thin layer giving support and sustenance to
plants.
Water covers approximately ______% of the Earths surface - correct answer 75%
How much land is left to meet all of our needs? - correct answer 10%
Soil provides 4 major functions for plants. Select the four. - correct answer filters and
purifies water and provides water for plants
Anchors roots and supports plants
Provides mineral nutrients to plants
Provides for gas exchange for plant roots
What are the five soil forming factors? - correct answer climate, time, parent material
(rock), living organisms, topography
Soil profiles are used by _____ to view the different layers of soil. - correct answer soil
scientist
A soil scientist is also know as a _____ - correct answer pedologist
How many different soil horizons are talked about in chapter 11? - correct answer 4
The plow pan is the top ____inches of the "A" horizon. - correct answer 6 inches
Soil Horizon "A" is the top soil layer. How deep does it go? - correct answer 6 to 12
inches
Soil Horizon "B" is the second soil layer. How deep does it go? - correct answer 12 to
36 inches
Soil Horizon "C" is the third soil layer. How deep does it go? - correct answer 36 to 84
inches
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