Farm Machinery and Mechanization Flashcards
It is the utilization of hand tools, implements for draft animals, and mechanically-powered machines for agricultural land development, production, harvesting and non-farm processing.
A. Agricultural machinery and equipment
C. Agricultural mechanization
B. Agricultural development
D. All of these
C. Agricultural mechanization
Which of the following countries follow the mechanization model of low land area to farmer ratio?
A. Thailand
C. Malaysia
B. Philippines
D. Indonesia
B. Philippines
The country which has the highest level of mechanization.
A. Thailand
C. Korea
B. Philippines
D. China
C. Korea
Machine commonly manufactured in the Philippines:
A. Rice mill
C. Thresher
B. Tractor
D. Grain dryer
C. Thresher
Currently, this is considered as highly mechanized sector in the Philippines:
A. Rice
C. Corn
B. Sugar
D. Coconut
A. Rice
This crop is the focus when tractors are first introduced in the Philippines:
A. Corn
C. Peanut
B. Sugarcane
D. Banana
B. Sugarcane
The following are the reasons why mechanization is a difficult problem in less developed countries, except:
A. Social system
C. Resistance to change of some farmers
B. Small farm size
D. Land conservation programs
D. Land conservation programs
These are machines that generate labor by increasing cropping intensities and make possible the full utilization of farm products and by-products:
A. Category I AMTs
C. Category III AMTs
B. Category II AMTs
D. Category IV AMTs
A. Category I AMTs
An international testing center for tractor.
A. International Rice Research Institute
C. NEBRASKA
B. International Farm Machinery Institute
D. None of these
C. NEBRASKA
Vehicle designed to pull, propel, and supply power to operate machinery used in agricultural operation.
A. Agricultural Tractor
C. Payloader
B. Automobile
D. None of these
A. Agricultural Tractor
It is a factor which considers the physical condition, heart-beat ratio, and body weight of a person when operating a machine.
A. Humanistic factor
C. Ergonomic factor
B. Mechanical operation factor
D. All of these
C. Ergonomic factor
In ASAE, safety code for laboratory equipment and typical application, the safety yellow color stands for:
A. Danger stop
C. Caution
B. Warning
D. None of these
C. Caution
A safety gray color at the ASAE safety code is code for:
A. Floor or work area around machines and Equipment
C. Areas with radiation hazard
B. Traffic and housekeeping areas
D. All of these
A. Floor or work area around machines and Equipment
When pipeline is painted with green and white color, the safety code means that the pipe contains:
A. Liquid of inherently low hazard
C. Fire extinguishing materials
B. Flammable or explosion materials
D. All of these
A. Liquid of inherently low hazard
ASAE classification for slow moving vehicle such as animal-drawn or motorize conveyance, including implements in tow should not be exceeded a travel speed of:
A. 30 kph
C. 50 kph
B. 40 kph
D. None of these
B. 40 kph
For safety purposes, slow-moving vehicle such as agricultural machines must be provided with:
A. Identification emblem to guide motorist that the machine is slow moving
B. Rear bumper to protect the machine from impact
C. Signal light when traveling
D. None of these
A. Identification emblem to guide motorist that the machine is slow moving
Types of guards designed to prevent contact with the moving parts by a person and/or clothing.
A. Shield
C. Casing
B. Cover
D. All of these
D. All of these
Which is not a tractor safety measure?
A. Not using the differential lock when turning
C. Not refueling while the engine is hot
B. Not shifting gears while going down a slope
D. Keeping the hitches high
D. Keeping the hitches high
A frame for protection of operators of compact utility tractors to minimize the possibility of serious crushing injury to the operator resulting from accidental upset.
A. Tractor shield frame
C. Roll bar
B. Roll-over protection structure
D. None of these
B. Roll-over protection structure
The identification of the given tire with its maximum recommended load when used in specific type service.
A. Tire rating
C. Ply rating
B. Tire lug rating
D. All of these
C. Ply rating
When viewed in front, tractor tires must be mounted with the V-pattern pointing in what direction?
A. Sideward
C. Downward
B. Upward
D. Backward
C. Downward
Tires can be partially filled with water to improve traction.
A. Wheelbase
C. Drawbar
B. Rollover
D. Ballast
D. Ballast
The substance that is added to the tractor for the purpose of changing traction and stability.
A. Ballast
C. Stabilizer
B. Pneumatic tire
D. Hydraulic lift
A. Ballast
Maximum tire inflation pressure for agricultural implement.
A. 40 psi
C. 100 psi
B. 60 psi
D. None of these
B. 60 psi
Gear oil is used for:
A. Engine
C. Hydraulic system
B. Transmission box
D. All of these
B. Transmission box
The gearbox placed on first gear will develop:
A. High torque - high speed
C. High torque – low speed
B. Low torque – low speed
D. Low torque – high speed
C. High torque – low speed
Four-wheel tractors are characterized as:
A. Low speed-low torque
C. High speed-high torque
B. Low speed-high torque
D. High speed-low torque
B. Low speed-high torque
Percentage work done in pulling an average plow.
A. 50 %
C. 30 %
B. 18 %
D. None of these
B. 18 %
Percentage work of plow used in cutting furrow slice.
A. 43 %
C. 24 %
B. 58 %
D. None of these
A. 43 %
Weight transfer means:
A. To shift implements weight to the tractor’s drive wheel in order to improve traction
B. To transfer torrens title from the landlord to the tenant
C. To move paddy from field to the granary
D. None of these
A. To shift implements weight to the tractor’s drive wheel in order to improve traction
This refers to the changes in the front and rear wheel reaction that occur when a tractor pulls a drawbar
load.
A. Resistance
C. Rolling moment
B. Traction
D. Weight transfer
D. Weight transfer
The center of gravity of a standard two-wheel-drive tractor is located:
A. At the mid center of the tractor
B. 1/3 of the wheel base ahead of the rear wheel axle of the tractor
C. Near the front axle wheel of the tractor
D. None of these
B. 1/3 of the wheel base ahead of the rear wheel axle of the tractor
Select two consecutive farm operations which when done mechanically can increase cropping intensity:
A. Planting – spraying
C. Harvesting – plowing
B. Irrigation – weeding
D. Harvesting – threshing
C. Harvesting – plowing
The mechanical manipulation of soil for any purpose.
A. Land grading
C. Earth moving
B. Tillage
D. None of these
B. Tillage
The pushing or rolling of soil by a steeply inclined blade.
A. Bulldozing
C. Subsoiling
B. Chiselling
D. None of these
A. Bulldozing
A tillage operation traditionally performed in preparing a seedbed for a given crop grown in a given
geographical area.
A. Conventional tillage
C. Strip tillage
B. Conservation tillage
D. None of these
A. Conventional tillage
A secondary tillage operation which pulverizes, smoothens, and packs the soil during seedbed preparation and also controls weeds.
A. Harrowing
C. Chiselling
B. Listing
D. None of these
A. Harrowing
A tillage and land forming operation using a tool which splits the soil and turns two furrows laterally in opposite directions, thereby providing a ridge-and-furrow soil configuration.
A. Harrowing
C. Chiselling
B. Listing
D. None of these
B. Listing
. It is deep chiselling below 16 in. For the purpose of loosening soil for root growth and/or water
movement.
A. Ridging
C. Subsoiling
B. Chiselling
D. None of these
C. Subsoiling
A procedure in which planting is made directly into an essentially unprepared seedbed.
A. Zero tillage
C. Reduced tillage
B. No-tillage planting
D. None of these
A. Zero tillage
Minimum soil manipulation necessary for crop production or for meeting tillage requirements under existing soil condition.
A. Much tillage
C. Minimum tillage
B. No-tillage planting
D. None of these
C. Minimum tillage
Machine operation in which there are two or more machines performing their own respective operation simultaneously.
A. Individual operation
C. Series operation
B. Parallel operation
D. None of these
B. Parallel operation
Machine operation in which there are two or more machines performing their own respective operation in sequence.
A. Individual operation
C. Series operation
B. Parallel operation
D. None of these
C. Series operation
Machine operation in which one or more similar machines are operated as one unit.
A. Individual operation
C. Series operation
B. Parallel operation
D. None of these
A. Individual operation
Field operating pattern where it has trips that parallel with each other, are incremented successively by
the operating width of the implement, and initiated at one boundary and terminated at the opposite.
A. Circuitous pattern
C. Alternation pattern
B. Headland pattern D. None of these
B. Headland pattern
It describes the operation of the implement operation paralleling each land’s boundaries and is commonly describes as “going around the field.”
A. Circuitous pattern
C. Alternation pattern
B. Headland pattern
D. None of these
A. Circuitous pattern
It is sometimes used in processing established row crops and a modification of continuous pattern.
A. Circuitous pattern
C. Alternation pattern
B. Headland pattern
D. None of these
C. Alternation pattern
Acceptable level wheel slip for two-wheel drive tractor on a tilled or soft soil.
A. 7 - 11%
C. 16 - 20%
B. 10 - 15%
D. None of these
B. 10-15%
What machinery gives the greatest ROI?
A. Grain dryer
C. Power tiller
B. Combine harvester
D. Tractor
d. tractor
The coefficient of traction for wheel-type tractor is highest for:
A. Concrete road
C. Sandy loam soil
B. Fine sand
D. All of these
a. concrete road
It is used to protect tractor operator from dust, noise, rain and heat.
A. Operator’s shield
C. Cab
B. Chasis
D. None of these
C. Cab
It is the center-to-center distance between two front or rear wheels.
A. Wheel clearance
C. Wheel distance
B. Wheel tread
D. None of these
B. Wheel tread
The pivotal point of connection of hitch to the tractor or a center of the articulated connection between link and the implement.
A. Hitch point
C. Implement point
B. Link point
D. All of these
A. Hitch point
It is an articulated connection between a link and the implement.
A. Hitch point
C. Implement point
B. Link point
D. All of these
A. Hitch point
It is an articulated connection between a link and the tractor.
A. Hitch point
C. Implement point
B. Link point
D. All of these
B. Link point
Device that connects and disconnects power input to the power output.
A. Clutch
C. Pulley
B. Gear
D. None of these
A. Clutch
General-purpose tillage equipment is used in:
A. 2-wheel tractor for wetland operation
C. 4-wheel tractor for wetland operation
B. 4-wheel tractor for dryland operation
D. All of these
D. All of these
Tillage equipment which displaces and shatters soil, used to reduce soil strength and to bury or mix plant materials and fertilizers in the tilled layer.
A. Primary tillage equipment
C. Seeding and planting equipment
B. Secondary tillage equipment
D. None of these
A. Primary tillage equipment
A primary-tillage plow used for small rice farm.
A. Moldboard
C. Spiral
B. Rotary
D. All of these
D. All of these
A primary-tillage plow for rice farming that is attached in replacement to the cage wheel of a power tiller.
A. Disk
C. Spiral
B. Rotary
D. All of these
C. Spiral
Single-axle machine powered by an engine ranging from 3 to 15 hp:
A. 2-wheel tractor
C. Standard tractor
B. Compact tractor
D. General-purpose tractor
A. 2-wheel tractor
A type of four-wheel tractor where power is transmitted to all wheels of the tractor.
A. Two-wheel drive tractor
C. Hydraulic drive tractor
B. Four-wheel drive tractor
D. None of these
B. Four-wheel drive tractor
A type of four-wheel tractor where power is transmitted to rear wheels with small front wheels being pushed along.
A. Two-wheel drive tractor
C. Hydraulic drive tractor
B. Four-wheel drive tractor
D. None of these
A. Two-wheel drive tractor
A tractor type designed for operation with advantage under trees.
A. Standard tractor
C. Orchard tractor
B. All-purpose row crop tractor
D. All of these
C. Orchard tractor
Auxiliary gear shift lever of a tractor is usually located at the:
A. Right side of the operator seat
C. Front of the operator seat
B. Left side of the operator seat
D. None of these
A. Right side of the operator seat
Hydraulic control level of a tractor is usually located at the:
A. Right side of the operator seat
C. Front of the operator seat
B. Left side of the operator seat
D. None of these
B. Left side of the operator seat
The tractor is generally characterized as:
A. High speed – heavy load
C. Low speed – heavy load
B. High speed – light load
D. Low speed – light load
C. Low speed – heavy load
It is a self-propelled machine having a single axle designed primarily to pull and propel trailed or mounted agricultural implement and machinery.
A. Walking-type tractor
C. Hand tractor
B. Pedestrian tractor
D. All of these
D. All of these
Warranty period for hand tractor from the purchase of the machine.
A. 4 months
C. 12 months
B. 6 months
D. All of these
B. 6 months
It refers to the driving force developed by a wheel or any other traction device:
A. Rolling resistance
C. Inertia
B. Traction
D. Pull
B. Traction
In order to properly stop the forward motion of the 4-wheel tractor, the operator has to step on the:
A. Brake pedal
C. Brake and clutch pedals
B. Clutch pedal
D. Accelerator
C. Brake and clutch pedals
The differential facilitates the turning of the tractor.
A. Gear lever
C. PTO
B. 3-pt hitch
D. Steering wheel
D. Steering wheel
If it is desired to reverse the four-wheel tractor to the right, the steering wheel must be turned.
A. Backwards
C. Clockwise
B. Counterclockwise
D. Forward
C. Clockwise
PAES recommended diameter of hole in the drawbar for four-wheel agricultural tractor.
A. 30 mm
C. 36 mm
B. 33 mm
D. None of these
B. 33 mm
Drawbar types:
A. Fixed drawbar
C. Link drawbar
B. Swinging drawbar
D. All of these
d. all of these
Drawbar types:
A. Fixed drawbar
C. Link drawbar
B. Swinging drawbar
D. All of these
D. All of these
Automatic Draft Control in a modern farm tractor.
A. Automatically controls the amount of air passing through the radiator to regulate the operating temperature of the engine
B. Is the hydraulic implement hitch system which automatically raises or lowers a soil engaging implement to maintain its draft at a pre-selected value
C. Positions the implement at a constant height or depth relative to the tractor
D. Steering wheel
B. Is the hydraulic implement hitch system which automatically raises or lowers a soil engaging implement to maintain its draft at a pre-selected value
Tractor size is determined by:
A. Weight, horsepower, and size and number of wheels
B. Implement capacity, weight, and size and number of wheels
C. Weight, horsepower, and implement capacity
D. Weight, horsepower, and size ONLY
C. Weight, horsepower, and implement capacity
An implement with integral power unit designed to provide both mobility and power for performing agricultural operation:
A. Mounted implement
C. Trailed-mounted implement
B. Self-propelled machine
D. Hitch
B. Self-propelled machine
It is a special shaft that extends to the rear of the tractor and is designed to provide power to integral mounted or trailing implements such as mowers, balers, and Rotavator:
A. PTO
C. Differential
B. Drawbar
D. Hitch
A. PTO
An external shaft on an agricultural tractor other than the PTO which provides rotational power to implements that are usually front and side mounted.
A. Belt drive shaft
C. Auxiliary PTO
B. Secondary PTO
D. None of these
C. Auxiliary PTO
Power implements are usually connected to the ________ of the tractor.
A. Wheel axle drive
C. Front wheel drive
B. Power take-off drive
D. None of these
B. Power take-off drive
Power drive that can be found at the rear of the tractor to propel power implements and stationary
machines.
A. Power take off drive
C. Differential gear
B. Hydraulic system
D. None of these
A. Power take off drive
The differential of a tractor is required when making a:
A. Right turn
C. Going straight
B. Left turn
D. Both A and B
D. Both A and B
Integral mounted implement are usually attached to the tractor through a:
A. Single point hitch system of the tractor
C. Double-hitch system of the tractor
B. Three-point hitch system of the tractor
D. None of these
B. Three-point hitch system of the tractor
A semi-integral mounted type implements are usually attached to the tractor through a:
A. Single point hitch system of the tractor
C. Double-hitch system of the tractor
B. Three-point hitch system of the tractor
D. None of these
B. Three-point hitch system of the tractor
Trailing-type implements are usually attached to the tractor through a:
A. Single point hitch system of the tractor
C. Double-hitch system of the tractor
B. Three-point hitch system of the tractor
D. None of these
A. Single point hitch system of the tractor
It is a special arrangement of gears so constructed and located in the transmission system of an automotive machine that it will permit one driving member to rotate slower or faster than the other and at the same time propel its share of the load:
A. PTO
C. Differential
B. Gear box
D. Automatic transmission
C. Differential
It is the special arrangement of gears to permit driving member to rotate slower or faster than the other and permit operation of driving wheels at different speed for easy turn.
A. Spur gear
C. Differential
B. Planetary gear
D. None of these
C. Differential
Part of a tractor that retards or stops one wheel during operation to be able to make short turn.
A. Differential brake
C. Brake pedal
B. Hand brake
D. All of these
A. Differential brake
It is a gear reduction of the tractor located in the power train between the differential and the driving wheel and transmit power of low speed and large tongue to the rear axles and wheels.
A. Universal joint
C. Differential
B. Final drive
D. None of these
B. Final drive
Front tread of four-wheel agricultural tractor is usually adjusted by:
A. Changing bolt position of the front axle
C. Changing the front axle
B. Changing the size of wheel
D. None of these
A. Changing bolt position of the front axle
The rear wheel for two-wheel and four-wheel drive tractors are adjusted by:
A. Changing the position of the bolt of the rear axle
C. Inverting the wheel disc
B. Changing the rear axle
D. None of these
C. Inverting the wheel disc
In optimizing the capacity of a machine, it is recommended to have:
A. One small machine
C. Two or more small machines
B. One big machine
D. All of these
C. Two or more small machines
The criteria used in evaluating the performance of a machine:
A. Reliability of machine
C. Cost of operation
B. Environment and safety
D. All of these
D. All of these
The direct type of power transmission system has:
A. 90% Eff
C. 98% Eff
B. 95% Eff
D. 100% Eff
D. 100% Eff
General-purpose tillage involves cutting and pulverizing the soil to a depth of:
A. Up to 3 inches
C. Up to 12 inches
B. Up to 6 inches
D. Up to 18 inches
B. Up to 6 inches
Primary tillage involves cutting the soil to a depth of:
A. Up to 3 inches
C. 6 to 18 inches
B. 3 to 6 inches
D. 6 to 36 inches
D. 6 to 36 inches
Secondary tillage involves pulverizing the soil to a depth of:
A. Up to 3 inches
C. 6 to 18 inches
B. 3 to 6 inches
D. 6 to 36 inches
B. 3 to 6 inches
The standard length of stroke of hydraulic remote-control cylinders for trailing-type agricultural implement is:
A. 6 to 12 inches
C. 10 to 20 inches
B. 8 to 16 inches
D. None of these
B. 8 to 16 inches
Depth of plowing for common paddy field.
A. 5 to 10 cm
C. 15 to 20 cm
B. 10 to 15 cm
D. None of these
B. 10 to 15 cm
Depth of cultivated topsoil layer being practiced in modern upland farming.
A. 0 to 10 cm
C. 20 cm to 30 cm
B. 10 to 20 cm
D. None of these
C. 20 cm to 30 cm
Minimum thrust per drawbar horsepower of hydraulic remote-control cylinder for trailing type agricultural implement.
A. 68 kg
C. 88 kg
B. 78 kg
D. None of these
A. 68 kg
In paddy field plowing operation using a four-wheel tractor, which of the following is true.
A. Smaller plots are much efficient to plow than larger plots
B. Larger plots are much efficient to plow than smaller plots
C. Smaller or larger plots have the same plowing efficiency
D. None of these
B. Larger plots are much efficient to plow than smaller plots
Tool used for displacing soil at various depths for soil research and analysis or for digging post holes by means of a rotating helical flighting.
A. Soil Auger
C. Extension Rod
B. Drill Bit
D. Soil Drill
A. Soil Auger
It is a method of plowing that moves two-way in a longitudinal direction.
A. Round about plowing
C. Consecutive plowing
B. One-way plowing
D. Return plowing
D. Return plowing
The distance between lower hitch point measured at the base of the lower hitch stud, or the distance between the inner most restraining means provided on the implement.
A. Lower hitch-point spread
C. Lower hitch point clearance
B. Lower hitch point distance
D. None of these
A. Lower hitch-point spread
A hitch system for a tractor suitable for large, heavy implement for trailer.
A. Three-point hitch system
C. Semi-mounted system
B. Drawbar hitch system
D. All of these
B. Drawbar hitch system
A primary tillage operation which manipulates the soil to a greater depth than 300 mm.
A. Reservoir tillage
C. Ridge tillage
B. Deep tillage
D. None of these
B. Deep tillage
Type of plow developed in an effort to reduce friction in a sliding bottom by using a rolling bottom is:
A. Moldboard plow C. Subsoilers
B. Disc plow
D. Rototiller
B. Disc plow
Which does not belong to the group?
A. Disc harrow
C. Packer
B. Field cultivator
D. Disc plow
D. Disc plow
When plowing requires for the soil to be incorporated or mixed with grasses and weeds, as an agricultural and biosystems engineer you will recommend:
A. Disc harrow
C. Moldboard plow
B. Rotary plow
D. All of these
B. Rotary plow
An agricultural and biosystems engineer will recommend a _______ in order to loosen the soil during plowing:
A. Subsoiler
C. Chisel plow
B. Field cultivator
D. None of these
C. Chisel plow
If soil clods are needed to be inverted during plowing, the agricultural and biosystems engineer will recommend a:
A. Disc harrow
C. Both A and B
B. Moldboard plow
D. None of these
B. Moldboard plow
hich of the following is not driven by PTO shaft?
A. Moldboard plow
C. Rotary tiller
B. Power harrow
D. All of these
A. Moldboard plow
. Primary tillage equipment that cuts the soil to a depth of 6 to 18 inches is called:
A. Moldboard plow
C. Chisel plow
B. Subsoiler
D. Spiral plow
A. Moldboard plow
A type of plow that is widely adapted in breaking different types of soil for turning and covering crop residues.
A. Rotary plow
C. Disk plow
B. Moldboard plow
D. None of these
B. Moldboard plow
The center of resistance of moldboard plow is located:
A. At the center of moldboard
C. At the intersection of moldboard and share
B. At the center of share
D. None of these
C. At the intersection of moldboard and share
. A moldboard plow has:
A. Lower draft than disk plow
C. Equal draft than disk plow
B. Higher draft than disk plow
D. All of these
B. Higher draft than disk plow
The size of a moldboard plow is determined:
A. From the top of the moldboard to the point of the share
B. From tip of the moldboard to the landside
C. From the wing of the share to the landside
D. None of these
C. From the wing of the share to the landside
It is an auxiliary plow-working element, mounted above the shin which deposits the upper edge of the furrow in the furrow bottom.
A. Tail piece
C. Coulter
B. Thrash board
D. None of these
B. Thrash board
It is a circular flat tool placed ahead of a plow used to cut plant material and soil.
A. Jointer
C. Coulter
B. Pinion plow
D. None of these
C. Coulter
The perpendicular distance between the wing and point of the share determines the:
A. Longitudinal dimension of plow
C. Diagonal dimension of plow
B. Transverse dimension of plow
D. Maximum dimension of plow
B. Transverse dimension of plow
A six-bottom moldboard plow is to be used to plow a heavy soil. How many scrapers are there in the plow?
A. 2
C. 6
B. 4
D. None of these
C. 6
It is a structural member of an implement where tillage tool is to the beam attached.
A. Gang
C. Shank
B. Boom
D. None of these
C. Shank
It is a part of the plow that connects the plow bottom and the frame.
A. Upper hitch point
C. Shank
B. Boom
D. None of these
c. shank
A central part of a plow where the share, moldboard, and landside are attached.
A. Frame
C. Shank
B. Frog
D. None of these
B. Frog
It is part of moldboard plow that is used to cut the soil.
A. Shin
C. Moldboard
B. Share
D. None these
B. Share
Part of the moldboard plow bottom that receives the furrow slice, lifts, inverts and throws it to one side is called:
A. Shin
C. Moldboard
B. Share
D. None these
C. Moldboard
It is the part of the moldboard plow that receives the furrow slice from the share and turns to break, crush, and pulverize the soil.
A. Shin
C. Moldboard
B. Share
D. None these
C. Moldboard
It is a part of the plow bottom which helps to counteract the side pressure exerted by the furrow slice.
A. Shin
C. Share
B. Landside
D. None these
B. Landside
It is a set of concave discs.
A. Gang
C. Disc frame
B. Disc set
D. None of these
A. Gang
Material recommended by PAES for use as implement frame.
A. Mild steel
C. Spring steel
B. Cold rolled steel
D. None of these
A. Mild steel
Material recommended by PAES in the manufacture of disk blade.
A. Mild steel
C. Cast iron
B. Carbon steel
D. None of these
B. Carbon steel
Part of soil profile exploited by the roots of the plant.
A. Root bed
C. Tillage zone
B. Root zone
D. None of these
B. Root zone
The soil profile modified by tillage or amendments for use by plant roots.
A. Root bed
C. Tillage zone
B. Root zone
D. None of these
B. Root zone
A trench left when the plow bottom cuts and turns the furrow slice.
A. Back furrow
C. Furrow
B. Dead furrow
D. All of these
C. Furrow
The untilled area where the machine turns.
A. Dead furrow
C. Back furrow
B. Furrow crown
D. Headland
D. Headland
It is the peak of the turned furrow slice.
A. Furrow crown
C. Furrow wall
B. Furrow slice
D. None of these
A. Furrow crown