TILLAGE Flashcards by Jan Kristia Bacerra | Brainscape

Q

Primary tillage

A

6-36”

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Q

Secondary tillage

A

3-6”

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Q

General Purpose tillage

A

6”

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Q

6-18” primary tillage equipment

A

moldboard plow

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Q

cutting edge of moldboard

A

share

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Q

receives furrow slice

A

moldboard

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Q

counteracts pressure

A

landslide

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Q

holds share, moldboard and landslide

frame

A

frog

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Q

wing

A

gunnel

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Q

point

A

cutting edge

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Q

rotating disc bottom

A

disc plow

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Q

concave disc with sharp edges

heat hardened steel

A

disc

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Q

scrape soil

A

scraper

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Q

counteract side pressure

A

rear furrow wheel

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Q

15-25 degree with vertical

depth of soil

A

tilt angle

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Q

42-45 degree with direction of travel

width of soil

A

side/disc angle

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Q

resistance of soil to tillage

affected by speed, sharpness and plow adjustment

A

draft of plow

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Q

specific draft

3 lbs/in^2

A

sandy

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Q

specific draft

3-6 lbs/in^2

A

sandy loam

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Q

specific draft

5-7 lbs/in^2

A

silty loam

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Q

specific draft

6-8 lbs/in^2

A

clay loam

Q

specific draft

10-11 lbs/in^2

A

heavy clay

Q

specific draft

12-15 lbs/in^2

A

virgin soil (clay)

Q

specific draft

12-15 lbs/in^2

A

virgin soil (clay)

Q

specific draft

16-18 lbs/in^2

A

Gumbo, moist

Q

specific draft

18-20 lbs/in^2

A

adobe dry

Q

increase in draft due to speed

100%

A

1.6

Q

increase in draft due to speed

104%

A

2

Q

increase in draft due to speed

108%

A

2.5

Q

increase in draft due to speed

112%

A

3

Q

increase in draft due to speed

117%

A

3.5

Q

increase in draft due to speed

121%

A

4

Q

increase in draft due to speed

125%

A

4.5

Q

increase in draft due to speed

130%

A

5

Q

increase in draft due to speed

134%

A

5.5

Q

increase in draft due to speed

138%

A

6

Q

increase in draft due to speed

143%

A

6.5

Q

increase in draft due to speed

147%

A

7

Q

increase in draft due to speed

152%

A

7.5

Q

increase in draft due to speed

156%

A

8

Q

increase in draft due to speed

160%

A

8.5

Q

increase in draft due to speed

165%

A

9

Q

increase in draft due to speed

169%

A

9.5

Q

made up of discs mounted on a common axle

A

disc gang

Q

two or more sets of disc gangs

A

disc harrow

Q

flanged tube inserted on common shaft between two discs to maintain disc spacing

A

spool

Q

washer on one of the common shaft to absorb end thrust of the gang

A

bumper

Q

contacting surfaces on which revolving part rest

A

bearing

Q

2 gangs of discs placed end-to-end

throws soil in opp directions

A

single action disc harrow

Q

4 gangs of discs

2 in front 2 at rear

A

double action disc harrow

Q

2 gangs of discs

one placed behind the other at an angle

A

offset disc harrow