Question 1

The SARE;and WHIP,EQIP and CSP programs

Accepted Answer

A)  mandate soil conservation programs in all U.S.-subsidized agriculture.
B)  promote research in sustainable agriculture (SAR
E)  or land and wildlife conservation on agricultural lands.
C)  are U.N.FAO programs aimed at sustainable agriculture in South America and Africa.
D)  are NGOs that work with Central American steeplands farmers to improve soil fertility.

Question 2

Children learning the process of good home gardening decide to help as best they can.Every day they walk along rows of bean plants,carefully inspecting each plant for insects,and removing any that they find.However,the bean plants do not grow well,and few beans form.Their parents notice the poor beans,inspect the plants and soil,and tell the children that walking around the plants every day has hurt the plants by

Accepted Answer

A)  compacting the soil,decreasing aeration and infiltration.
B)  increasing soil aeration and killing soil microorganisms.
C)  reducing the nutrient minerals out of the soil.
D)  converting the topsoil into clay.

Question 3

Which of the following is true?

Accepted Answer

A)  Only about 10% of the world's food comes from land-based agriculture.
B)  Soil degradation is a problem unique to the past two centuries.
C)  More than 20% of cultivated land was degraded between 1989 and 2003.
D)  The Mayan Empire serves as a model for excellent soil management.

Question 4

-The movement of the water through this plant involves

Accepted Answer

A)  transpiration and stomata in the leaves.
B)  transpiration and stomata in the roots.
C)  infiltration and high soil fertility.
D)  infiltration and photosynthesis in the leaves.

Question 5

Adding humus in a garden will most likely

Accepted Answer

A)  decrease the nutrients of the soil and the water-holding capacity.
B)  increase the nutrients of the soil and the water-holding capacity.
C)  increase the nutrients of the soil but decrease the water-holding capacity.
D)  decrease the nutrients of the soil but increase the water-holding capacity.

Question 6

In a region of eastern Washington state known as the Palouse,farmers grow wheat on steep sloped hills.Which of the following agricultural practices might be of greatest benefit in this region?

Accepted Answer

A)  use of shelterbelts
B)  contour strip farming
C)  irrigation
D)  repeated plowing

Question 7

At a county fair,the winner of the best garden vegetable competition is asked how she grows such wonderful produce consistently.Wanting not to reveal all of her secrets,she says she uses composted materials.What this gardener is using is

Accepted Answer

A)  a type of soil made of sand and fertilizer.
B)  a type of soil made of a mixture of clay and sand.
C)  decomposed organic matter called humus.
D)  a mixture of fungi,insects,and worms.

Question 8

In which of the following agricultural situations are fertilizers least needed?

Accepted Answer

A)  A pumpkin patch is harvested only in the fall,and the vines remain behind.
B)  1,000 acres of corn are raised and harvested for export from a midwestern farm.
C)  A natural prairie pasture where cattle feed and defecate.
D)  A field where a farmer applies cow manure after harvesting hay.

Question 9

When a plant does not get enough water and starts to wilt,it

Accepted Answer

A)  opens its stomata,stops transpiration,and generates oxygen but not carbon dioxide.
B)  opens its stomata,starts transpiration,and generates carbon dioxide but not oxygen.
C)  closes its stomata,stops transpiration,and no longer brings in carbon dioxide from the air.
D)  closes its stomata,starts transpiration,and no longer brings in oxygen from the air.

Question 10

Overgrazing by cattle primarily contributes to desertification by

Accepted Answer

A)  promoting erosion and loss of rooted plant cover.
B)  contaminating streams with cattle wastes.
C)  cattle outcompeting natural herbivores.
D)  spreading the growth of non-native species.

Question 11

Most plants do best in soils with a pH that is

Accepted Answer

A)  below 2.
B)  between 6-8.
C)  between 8-10.
D)  above 10.

Question 12

In general,United States subsidies for farmers and ranchers have

Accepted Answer

A)  been based on a sustainable use of natural resources.
B)  produced unsustainable soil conservation practices and increased pesticide and fertilizer use.
C)  shown how satellite technology can benefit conservation efforts.
D)  demonstrated the benefit of government investment to support conservation efforts.

Question 13

In a healthy soil environment that demonstrates sustainability,

Accepted Answer

A)  the levels of humus steadily declines,but the aeration increases.
B)  sandy or silty soils are steadily converted to clay soils.
C)  abundant populations of bacteria are steadily replaced by mycorrhizae.
D)  the humus forming processes of topsoil is renewed by the addition of detritus and humus.

Question 14

No-till farming would be most beneficial for farmers

Accepted Answer

A)  with steeply sloped fields.
B)  who plant a cash crop every third year.
C)  who typically experience minimal soil erosion.
D)  using contour strip cropping.

Question 15

A soil that has become mineralized will have

Accepted Answer

A)  more earthworms,more humus,and more sand.
B)  fewer earthworms,less humus,and more sand,silt,or clay.
C)  more detritus,more fungi,but less aeration.
D)  more detritus,more bacteria,but less water-holding capacity.

Question 16

Which of the following farming practices would be expected to produce the least nutrient leaching,and thus contribute most to soil sustainability?

Accepted Answer

A)  deep plowing,irrigation,and the use of inorganic fertilizers
B)  deep plowing,no irrigation,and the use of inorganic fertilizers
C)  no plowing,irrigation,and the use of organic fertilizers
D)  no plowing,no irrigation,and the use of organic fertilizers

Question 17

Compared to inorganic fertilizers,organic fertilizers such as

Accepted Answer

A)  cow manure applied to a field increase the chances of nutrient leaching.
B)  cow manure applied to a field reduce the chances of nutrient leaching.
C)  liquid ammonia sprayed on a field decrease the chances of nutrient leaching.
D)  liquid ammonia sprayed on a field increase the formation of humus.

Question 18

We would expect that soil leaching would be most severe in regions where

Accepted Answer

A)  there is little rainfall and no irrigation of crops.
B)  irrigation is applied to fields on hillsides.
C)  mollisols are abundant and farmers rarely plow.
D)  cattle are grazed and natural grasses cover the land.

Question 19

On a hot day with bright sunlight and plenty of water in the soil,a plant actively engaged in photosynthesis will use its stomata to move

Accepted Answer

A)  water and oxygen from the plant and take in carbon dioxide.
B)  water and carbon dioxide from the plant and take in oxygen.
C)  oxygen and carbon dioxide from the plant and take in water.
D)  water from the plant and take in carbon dioxide and oxygen.

Question 20

Which of the following would do the most harm to the productivity of a garden?

Accepted Answer

A)  killing the fungi and bacteria in the soil
B)  killing the nematodes and insects in the soil
C)  adding humus and sandy loam to the soil
D)  plowing into the soil the stalks from last year's crops

Exam 11: Soil: Foundation for Land Ecosystems

At a county fair,the winner of the best garden vegetable competition is asked how she grows such wonderful produce consistently.Wanting not to reveal all of her secrets,she says she uses composted materials.What this gardener is using is

Correct Answer
verified

Most plants do best in soils with a pH that is

Correct Answer
verified

A soil that has become mineralized will have

Correct Answer
verified

When a plant does not get enough water and starts to wilt,it

Correct Answer
verified

In general,United States subsidies for farmers and ranchers have

Correct Answer
verified

The SARE;and WHIP,EQIP and CSP programs

Correct Answer
verified

On a hot day with bright sunlight and plenty of water in the soil,a plant actively engaged in photosynthesis will use its stomata to move

Correct Answer
verified

In which of the following agricultural situations are fertilizers least needed?

Correct Answer
verified

In a healthy soil environment that demonstrates sustainability,

Correct Answer
verified

No-till farming would be most beneficial for farmers

Correct Answer
verified

-The movement of the water through this plant involves

Correct Answer
verified

Which of the following is true?

Correct Answer
verified

Adding humus in a garden will most likely

Correct Answer
verified

We would expect that soil leaching would be most severe in regions where

Correct Answer
verified

Which of the following farming practices would be expected to produce the least nutrient leaching,and thus contribute most to soil sustainability?

Correct Answer
verified

Compared to inorganic fertilizers,organic fertilizers such as

Correct Answer
verified

In a region of eastern Washington state known as the Palouse,farmers grow wheat on steep sloped hills.Which of the following agricultural practices might be of greatest benefit in this region?

Correct Answer
verified

Overgrazing by cattle primarily contributes to desertification by

Correct Answer
verified

Correct Answer
verified

Which of the following would do the most harm to the productivity of a garden?

Correct Answer
verified

Exam 11: Soil: Foundation for Land Ecosystems

At a county fair,the winner of the best garden vegetable competition is asked how she grows such wonderful produce consistently.Wanting not to reveal all of her secrets,she says she uses composted materials.What this gardener is using is

Correct AnswerverifiedShow Answer

Most plants do best in soils with a pH that is

Correct AnswerverifiedShow Answer

A soil that has become mineralized will have

Correct AnswerverifiedShow Answer

When a plant does not get enough water and starts to wilt,it

Correct AnswerverifiedShow Answer

In general,United States subsidies for farmers and ranchers have

Correct AnswerverifiedShow Answer

The SARE;and WHIP,EQIP and CSP programs

Correct AnswerverifiedShow Answer

On a hot day with bright sunlight and plenty of water in the soil,a plant actively engaged in photosynthesis will use its stomata to move

Correct AnswerverifiedShow Answer

In which of the following agricultural situations are fertilizers least needed?

Correct AnswerverifiedShow Answer

In a healthy soil environment that demonstrates sustainability,

Correct AnswerverifiedShow Answer

No-till farming would be most beneficial for farmers

Correct AnswerverifiedShow Answer

-The movement of the water through this plant involves

Correct AnswerverifiedShow Answer

Which of the following is true?

Correct AnswerverifiedShow Answer

Adding humus in a garden will most likely

Correct AnswerverifiedShow Answer

We would expect that soil leaching would be most severe in regions where

Correct AnswerverifiedShow Answer

Which of the following farming practices would be expected to produce the least nutrient leaching,and thus contribute most to soil sustainability?

Correct AnswerverifiedShow Answer

Compared to inorganic fertilizers,organic fertilizers such as

Correct AnswerverifiedShow Answer

In a region of eastern Washington state known as the Palouse,farmers grow wheat on steep sloped hills.Which of the following agricultural practices might be of greatest benefit in this region?

Correct AnswerverifiedShow Answer

Overgrazing by cattle primarily contributes to desertification by

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following would do the most harm to the productivity of a garden?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified