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SoilSci 02
53問 • 1年前
  • Anne Ranay
    • 通報

    問題一覧

  • 1

    Soil consistence measure traits such as

    d. A,B,C

  • 2

    Improving tilth is largely a matter of improving structure and avoiding compaction. The following practices can help improve tilth, except one:

    Increase the number of tillage operations

  • 3

    A soil color which suggest that the soil is waterlogged for part but not all of the year

    Mottle color

  • 4

    The lack of oxygen results from water-logging so bluish-gray color indicates poor soil drainage. The occurrence of this color is called

    mottling

  • 5

    A soil which held loosely and can be absorbed by plants is called sometimes as capillary water is known as

    Available water

  • 6

    Which of the ff is the most economical approach used to determine fertilizer needs?

    nutrient deficiency symptoms

  • 7

    Which of the ff is an advantage of an organic fertilizer?

    improve soil fertility

  • 8

    Which among the mechanics of erosion comes first?

    soil detachment

  • 9

    Which among the ff is the major agent of erosion observed in the Philippines?

    water

  • 10

    Which among the statements is FALSE?

    d. both b and c

  • 11

    Which of the ff principles of erosion control can be done without altering the soil properties?

    Dissipation of energy of raindrops

  • 12

    Which among the soil properties result to low K values?

    high organic matter content

  • 13

    Which of the following soil structure is most likely to cause higher erosion rate?

    platy

  • 14

    Which of the ff clays can cause higher erosion rate?

    montmorillonite

  • 15

    Which of the following is NOT a source of plant nutrient?

    none of the above

  • 16

    Which among the statements is TRUE?

    Sedimentation is a by-product of erosion

  • 17

    Which of the ff is NOT an on-site impact of soil erosion?

    flooding

  • 18

    This is the most insidious kind of soil erosion?

    sheet erosion

  • 19

    Which of the ff is physical barrier type of soil conservation method?

    geotextiles

  • 20

    Which of the ff equations best described USLE?

    A=RKLSCP

  • 21

    A man-made surface horizon that is >20cm thick, created by years of manure accumulation

    plaggen

  • 22

    The roots grow best and most thickly where there is an optimum amounts of the following, except:

    Carbon dioxide

  • 23

    The surface mineral layer loses clay, iron and other materials to leaching. This loss is called

    elluviation

  • 24

    A very hard and resistant mineral, weathers slowly to sand

    quartz

  • 25

    This rock has been altered by heat, pressure or chemical action

    marble

  • 26

    These rocks are transported, fragmented and deposited in areas of accumulation by the action of water and wind

    sandstone

  • 27

    The volcanic equivalent of syenite composed but lack quartz.

    trachyte

  • 28

    Any decomposition of mineral which involves the addition of water

    hydrolysis

  • 29

    A, B & C horizon are known as what?

    master horizon

  • 30

    This soil horizon is often called called as “Zone of Accumulation “

    B horizon

  • 31

    When parent material are move by sliding or rolling down a slope . This material is called

    colluvial

  • 32

    Avalanches , mudslides and landslides are examples of parent materials transported by

    gravity

  • 33

    The main effects of climate in soil development are due to

    Temperature / rainfall

  • 34

    This mica group is known as “white mica” which is an important source of potassium and silicate clays

    Muscovite

  • 35

    Which one does not belong to montmorillonite group

    Nacrite

  • 36

    Three classes of sedimentary rocks are , except :

    Elastic sediments

  • 37

    Metamorphic rocks are formed from sediments or igneous rocks by changing it to new form. The causes of the changes are as follows , except:

    Cementation

  • 38

    The secondary mineral are known as “Paintrock” or red ochre and is a source of hydroxide of clays , iron and color of soils

    Limonite

  • 39

    This primary mineral is also called as “Black Mica” which contains iron, magnesium and potassium and a source of silicate clays

    Biotite

  • 40

    The following belong to the kaolin group of secondary mineral ,except;

    Vermiculite

  • 41

    Which does not belong to the group

    gypsum

  • 42

    Which does not belong to the group

    Aluminum group

  • 43

    Which does not belong to the group

    Iron group

  • 44

    A basic igneous rocks are those having a total content SiO2 in excess of how many percent ?

    55

  • 45

    The sediments are lithified by the following processes ,except:

    Dehydration

  • 46

    An association of water molecules with other molecules or unions of water molecules with other molecules is called

    Hydration

  • 47

    Mineral matter is one of the major components of the soil , it constitute about how many percent ?

    45

  • 48

    The smallest components of the soil is

    Organic soil

  • 49

    This soil component is located in the mares of soil pores separated by the soil solids not occupied by the universal solvent

    Soil air

  • 50

    Basic igneous rocks are those in which the total quartz is less than how many percent?

    30

  • 51

    An igneous rocks which reach the surface as molten lava and crystallize on the surface on the earth surface

    Extrusive igneous rock

  • 52

    An igneous rocks which are formed from below the surface of magma are called

    A & B

  • 53

    It is the most common primary mineral carrier of phosphorus

    Apatite

    • CropSc 01

    CropSc 01

    Anne Ranay · 100問 · 1年前

    CropSc 01

    CropSc 01

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    CropSc 02

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    Cropsci 03

    Cropsci 03

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    AgEcon 01

    AgEcon 01

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    AgEcon 01

    AgEcon 01

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    SoilSc01

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    AgEcon 02

    AgEcon 02

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    AgEcon 02

    AgEcon 02

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    AgEcon 03

    AgEcon 03

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    AgEcon 03

    AgEcon 03

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    AnSci 01

    AnSci 01

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    AnSci 01

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    AnSci 02

    AnSci 02

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    AnSci 03

    AnSci 03

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    AnSci 03

    AnSci 03

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    CropSci 04 UPSTEP

    CropSci 04 UPSTEP

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    CropSci 04 UPSTEP

    CropSci 04 UPSTEP

    100問 • 1年前
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    CropSci 05 UPSTEP

    CropSci 05 UPSTEP

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    CropSci 05 UPSTEP

    CropSci 05 UPSTEP

    100問 • 1年前
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    CropSci 06 UPSTEP

    CropSci 06 UPSTEP

    Anne Ranay · 100問 · 1年前

    CropSci 06 UPSTEP

    CropSci 06 UPSTEP

    100問 • 1年前
    Anne Ranay

    AgEcon 04 UpStep

    AgEcon 04 UpStep

    Anne Ranay · 100問 · 1年前

    AgEcon 04 UpStep

    AgEcon 04 UpStep

    100問 • 1年前
    Anne Ranay

    Ansci 04

    Ansci 04

    Anne Ranay · 100問 · 1年前

    Ansci 04

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    Ansci 05

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    Anne Ranay · 28問 · 1年前

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    zenguru + upstep

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    Anne Ranay · 25問 · 1年前

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    25問 • 1年前
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    問題一覧

  • 1

    Soil consistence measure traits such as

    d. A,B,C

  • 2

    Improving tilth is largely a matter of improving structure and avoiding compaction. The following practices can help improve tilth, except one:

    Increase the number of tillage operations

  • 3

    A soil color which suggest that the soil is waterlogged for part but not all of the year

    Mottle color

  • 4

    The lack of oxygen results from water-logging so bluish-gray color indicates poor soil drainage. The occurrence of this color is called

    mottling

  • 5

    A soil which held loosely and can be absorbed by plants is called sometimes as capillary water is known as

    Available water

  • 6

    Which of the ff is the most economical approach used to determine fertilizer needs?

    nutrient deficiency symptoms

  • 7

    Which of the ff is an advantage of an organic fertilizer?

    improve soil fertility

  • 8

    Which among the mechanics of erosion comes first?

    soil detachment

  • 9

    Which among the ff is the major agent of erosion observed in the Philippines?

    water

  • 10

    Which among the statements is FALSE?

    d. both b and c

  • 11

    Which of the ff principles of erosion control can be done without altering the soil properties?

    Dissipation of energy of raindrops

  • 12

    Which among the soil properties result to low K values?

    high organic matter content

  • 13

    Which of the following soil structure is most likely to cause higher erosion rate?

    platy

  • 14

    Which of the ff clays can cause higher erosion rate?

    montmorillonite

  • 15

    Which of the following is NOT a source of plant nutrient?

    none of the above

  • 16

    Which among the statements is TRUE?

    Sedimentation is a by-product of erosion

  • 17

    Which of the ff is NOT an on-site impact of soil erosion?

    flooding

  • 18

    This is the most insidious kind of soil erosion?

    sheet erosion

  • 19

    Which of the ff is physical barrier type of soil conservation method?

    geotextiles

  • 20

    Which of the ff equations best described USLE?

    A=RKLSCP

  • 21

    A man-made surface horizon that is >20cm thick, created by years of manure accumulation

    plaggen

  • 22

    The roots grow best and most thickly where there is an optimum amounts of the following, except:

    Carbon dioxide

  • 23

    The surface mineral layer loses clay, iron and other materials to leaching. This loss is called

    elluviation

  • 24

    A very hard and resistant mineral, weathers slowly to sand

    quartz

  • 25

    This rock has been altered by heat, pressure or chemical action

    marble

  • 26

    These rocks are transported, fragmented and deposited in areas of accumulation by the action of water and wind

    sandstone

  • 27

    The volcanic equivalent of syenite composed but lack quartz.

    trachyte

  • 28

    Any decomposition of mineral which involves the addition of water

    hydrolysis

  • 29

    A, B & C horizon are known as what?

    master horizon

  • 30

    This soil horizon is often called called as “Zone of Accumulation “

    B horizon

  • 31

    When parent material are move by sliding or rolling down a slope . This material is called

    colluvial

  • 32

    Avalanches , mudslides and landslides are examples of parent materials transported by

    gravity

  • 33

    The main effects of climate in soil development are due to

    Temperature / rainfall

  • 34

    This mica group is known as “white mica” which is an important source of potassium and silicate clays

    Muscovite

  • 35

    Which one does not belong to montmorillonite group

    Nacrite

  • 36

    Three classes of sedimentary rocks are , except :

    Elastic sediments

  • 37

    Metamorphic rocks are formed from sediments or igneous rocks by changing it to new form. The causes of the changes are as follows , except:

    Cementation

  • 38

    The secondary mineral are known as “Paintrock” or red ochre and is a source of hydroxide of clays , iron and color of soils

    Limonite

  • 39

    This primary mineral is also called as “Black Mica” which contains iron, magnesium and potassium and a source of silicate clays

    Biotite

  • 40

    The following belong to the kaolin group of secondary mineral ,except;

    Vermiculite

  • 41

    Which does not belong to the group

    gypsum

  • 42

    Which does not belong to the group

    Aluminum group

  • 43

    Which does not belong to the group

    Iron group

  • 44

    A basic igneous rocks are those having a total content SiO2 in excess of how many percent ?

    55

  • 45

    The sediments are lithified by the following processes ,except:

    Dehydration

  • 46

    An association of water molecules with other molecules or unions of water molecules with other molecules is called

    Hydration

  • 47

    Mineral matter is one of the major components of the soil , it constitute about how many percent ?

    45

  • 48

    The smallest components of the soil is

    Organic soil

  • 49

    This soil component is located in the mares of soil pores separated by the soil solids not occupied by the universal solvent

    Soil air

  • 50

    Basic igneous rocks are those in which the total quartz is less than how many percent?

    30

  • 51

    An igneous rocks which reach the surface as molten lava and crystallize on the surface on the earth surface

    Extrusive igneous rock

  • 52

    An igneous rocks which are formed from below the surface of magma are called

    A & B

  • 53

    It is the most common primary mineral carrier of phosphorus

    Apatite