1Which planting system accommodates approximately 15% more plants than the square system while maintaining the same distance between plants?
A.Rectangular system
B.Quincunx system
C.Hexagonal system
D.Contour system
Correct Answer: Hexagonal system
Explanation:The Hexagonal system forms equilateral triangles, allowing plants to be equidistant in all directions. This geometric arrangement allows for approximately 15% more plants per unit area compared to the square system.
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2In orchard establishment, on which side of the orchard are windbreaks generally planted to protect fruit trees?
A.South and East
B.North and West
C.South and West
D.North and East
Correct Answer: North and West
Explanation:In most regions (especially the Northern Hemisphere), strong and desiccating winds typically come from the North and West. Planting windbreaks on these sides protects the main orchard.
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3Which planting system places a filler plant in the center of a square, initially doubling the plant population?
A.Triangular system
B.Quincunx system
C.Hexagonal system
D.Rectangular system
Correct Answer: Quincunx system
Explanation:The Quincunx (or Diagonal) system is essentially a square system with an additional temporary 'filler' plant placed in the center of the square, nearly doubling the density until the fillers are removed.
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4What is the primary objective of Training a fruit tree?
A.To remove dead and diseased wood
B.To encourage annual bearing
C.To establish a strong framework and shape
D.To increase fruit size only
Correct Answer: To establish a strong framework and shape
Explanation:Training is done primarily in the early years to give the tree a desired shape and build a strong structural framework capable of bearing heavy fruit loads later.
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5Which pruning technique involves the removal of the terminal portion of a shoot, leaving the basal portion intact?
A.Thinning out
B.Heading back
C.Pollarding
D.Dehorning
Correct Answer: Heading back
Explanation:Heading back involves cutting a branch back to a bud or a stub, which stimulates the growth of lateral buds below the cut, resulting in a bushier growth.
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6In the context of orchard layout, what is the formula to calculate the number of plants () in a Square System for an area () with spacing ()?
A.
B.
C.
D.
Correct Answer:
Explanation:In a square system, the area occupied by a single tree is the square of the spacing (). The total number of plants is the Total Area divided by the area per plant.
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7Which training system involves a main trunk growing vertically with lateral branches arising at intervals, often resulting in a pyramidal shape?
A.Open Center System
B.Central Leader System
C.Modified Central Leader System
D.Vase System
Correct Answer: Central Leader System
Explanation:In the Central Leader system, the main trunk is allowed to grow to the top, and side branches grow from it. This creates a strong structure but can shade the interior lower branches.
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8Notching is a practice defined by making a cut:
A.Below a bud to inhibit its growth
B.Above a bud to stimulate its growth
C.Around the main trunk to stop carbohydrate flow
D.On the roots to dwarf the tree
Correct Answer: Above a bud to stimulate its growth
Explanation:Notching involves making a small cut or removing a wedge of bark just above a bud. This interrupts the downward flow of auxins (which suppress lateral buds), thereby stimulating the bud to sprout.
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9Which training system is recommended for high-light-requiring stone fruits like peaches, where the center is kept open to admit sunlight?
A.Central Leader System
B.Open Center (Vase) System
C.Modified Central Leader System
D.Espalier System
Correct Answer: Open Center (Vase) System
Explanation:The Open Center or Vase system removes the central leader, allowing light to penetrate the center of the canopy, which promotes better fruit coloration and ripening in the interior.
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10Top working is primarily used for:
A.Training young saplings
B.Controlling pests in the soil
C.Changing an inferior variety into a superior one in established trees
D.Increasing the height of the tree trunk
Correct Answer: Changing an inferior variety into a superior one in established trees
Explanation:Top working is a technique where the main limbs of an established tree are grafted with scions of a desirable variety to upgrade the orchard without replanting.
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11What is the primary physiological effect of Girdling?
A.Increased nitrogen uptake by roots
B.Accumulation of carbohydrates above the cut
C.Enhanced downward flow of auxin
D.Rapid healing of pruning wounds
Correct Answer: Accumulation of carbohydrates above the cut
Explanation:Girdling (removing a ring of phloem) stops the downward transport of photosynthates (carbohydrates) to the roots, causing them to accumulate above the girdle, which can enhance fruit set and size.
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12Meadow Orcharding is a concept associated with:
A.Ultra-Low Density Planting
B.Ultra-High Density Planting
C.Wild forest simulation
D.Hydroponic growing
Correct Answer: Ultra-High Density Planting
Explanation:Meadow orcharding involves planting trees at ultra-high densities (e.g., thousands per hectare), often maintained as small bushes, to maximize yield per unit area in the initial years.
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13Which practice involves making a cut below a bud to inhibit its growth by accumulating carbohydrates in the bud?
A.Notching
B.Nicking
C.Heading back
D.Thinning
Correct Answer: Nicking
Explanation:Nicking is a cut made below a bud. This checks the flow of carbohydrates from the leaf to the rest of the tree, keeping the C:N ratio high near the bud, which may encourage fruit bud formation but inhibits vegetative sprouting.
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14In the Modified Central Leader system, the central leader is:
A.Allowed to grow indefinitely
B.Removed immediately at planting
C.Allowed to grow for a few years and then headed back
D.Replaced by a trellis wire
Correct Answer: Allowed to grow for a few years and then headed back
Explanation:This system combines attributes of both Central Leader and Open Center. The central leader grows for 4-5 years to establish branch tiers, then is cut to open the top.
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15Which of the following is an example of Thinning out?
A.Cutting a branch back to half its length
B.Removing a branch completely from its point of origin
C.Removing the apical bud only
D.Scoring the bark of the trunk
Correct Answer: Removing a branch completely from its point of origin
Explanation:Thinning out refers to the complete removal of a shoot or limb at its base (point of attachment), which increases light penetration but does not invigorate the remaining wood as much as heading back.
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16The Contour system of planting is specifically designed for:
A.Flat plains
B.Waterlogged soil
C.Hilly areas with steep slopes
D.Greenhouse cultivation
Correct Answer: Hilly areas with steep slopes
Explanation:The Contour system is used on hillsides to reduce soil erosion. Trees are planted along contour lines (lines of equal elevation).
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17What is the ideal Crotch Angle (angle between the trunk and primary branch) for a strong framework?
A.Very narrow ()
B.Wide ()
C. exactly
D.Obtuse ()
Correct Answer: Wide ()
Explanation:Wide crotch angles () provide structural strength. Narrow angles often result in bark inclusion and weak joints that split under heavy fruit loads.
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18Frame working differs from Top working in that:
A.The main framework of the tree is retained and smaller branches are grafted
B.The entire tree is cut down to the stump
C.It is used only for rootstock production
D.It involves no grafting
Correct Answer: The main framework of the tree is retained and smaller branches are grafted
Explanation:In Frame working, the main skeletal structure (frame) is kept, and many small grafts are inserted on the lateral branches. In Top working, the main limbs are cut back severely.
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19Rejuvenation of old orchards generally involves:
A.Increasing nitrogen application only
B.Severe pruning (heading back) of main limbs
C.Stopping irrigation completely
D.Planting new trees between old ones without pruning
Correct Answer: Severe pruning (heading back) of main limbs
Explanation:Rejuvenation involves heavy pruning to remove old, non-productive wood and stimulate the growth of new, vigorous shoots from the main scaffold limbs.
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20In a rectangular planting system where row-to-row distance is and plant-to-plant distance is , which is true?
A.
B.
C. always
D.
Correct Answer:
Explanation:By definition, a rectangular system has different spacing between rows () and between plants (), usually to facilitate intercultural operations between rows.
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21What is the primary disadvantage of the Central Leader System?
A.Weak crotch angles
B.Lack of structural strength
C.Shading of the lower interior canopy
D.Inability to bear fruit
Correct Answer: Shading of the lower interior canopy
Explanation:The tall, pyramidal shape can cause the upper branches to shade the lower interior branches, potentially reducing fruit quality and spur formation in the lower sections.
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22Which pruning tool is most appropriate for cutting branches up to 2 cm in diameter?
A.Pruning saw
B.Secateurs (Hand pruners)
C.Chainsaw
D.Axe
Correct Answer: Secateurs (Hand pruners)
Explanation:Secateurs are handheld tools designed for clean cuts on small branches (typically up to 2 cm or 3/4 inch).
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23High Density Planting (HDP) relies on:
A.Vigorous rootstocks and wide spacing
B.Dwarfing rootstocks and close spacing
C.Seedling propagation only
D.No pruning
Correct Answer: Dwarfing rootstocks and close spacing
Explanation:HDP utilizes dwarfing rootstocks or spur-type varieties to keep trees small, allowing them to be planted very closely to maximize production per hectare.
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24Which planting system uses trees planted at the corners of equilateral triangles?
A.Square system
B.Rectangular system
C.Hexagonal system
D.Quincunx system
Correct Answer: Hexagonal system
Explanation:The Hexagonal system is based on an equilateral triangle arrangement, where every tree is equidistant from its six nearest neighbors.
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25When is the best time to prune deciduous fruit trees?
A.During peak flowering
B.During active vegetative growth (Summer)
C.During the dormant season (Winter)
D.Immediately after fruit set
Correct Answer: During the dormant season (Winter)
Explanation:Deciduous trees are best pruned when dormant (leafless), as the structure is visible, and the tree suffers less shock and sap loss.
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26The application of Bordeaux paste or paint on cut ends after pruning is done to:
A.Make the tree look attractive
B.Prevent entry of pathogens and promote healing
C.Stop photosynthesis
D.Increase water absorption
Correct Answer: Prevent entry of pathogens and promote healing
Explanation:Pruning cuts are open wounds. Applying a fungicide paste like Bordeaux paste prevents fungal and bacterial infections while the wound calluses.
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27Which method involves removing a narrow ring of bark without injuring the cambium?
A.Scoring
B.Ringing
C.Heading back
D.Thinning
Correct Answer: Ringing
Explanation:Ringing involves removing a complete ring of bark. If the cambium is left intact, it heals faster; if removed, it acts like girdling. Often the terms are used interchangeably, but ringing specifically refers to the removal of a strip.
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28In the context of 'Pollinizers' in an orchard layout, a common recommendation is to plant a pollinizer tree:
A.Every 20th tree
B.Every 3rd tree in every 3rd row (1 in 9)
C.Only on the border
D.Once per acre
Correct Answer: Every 3rd tree in every 3rd row (1 in 9)
Explanation:To ensure adequate cross-pollination in self-incompatible orchards (like many apples), a common ratio is 1:9, placing a pollinizer every third tree in every third row.
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29The Triangular System of planting differs from the Square system because:
A.Plants in alternate rows are offset (midway between plants in adjacent rows)
B.It uses equilateral triangles
C.It uses a central filler plant
D.It is only for hills
Correct Answer: Plants in alternate rows are offset (midway between plants in adjacent rows)
Explanation:In the triangular system, plants in the second row are placed midway between the plants of the first row, forming isosceles (not necessarily equilateral) triangles.
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30Root pruning is sometimes practiced to:
A.Increase vegetative growth
B.Reduce tree size and induce flowering
C.Improve anchorage
D.Increase water uptake
Correct Answer: Reduce tree size and induce flowering
Explanation:Severing roots restricts water and nutrient uptake, which reduces vegetative vigor (dwarfing effect) and promotes carbohydrate accumulation, leading to flowering.
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31Bridge grafting is a technique mainly used for:
A.Propagating new varieties
B.Repairing trees with damaged trunks/girdled by rodents
C.Creating high density orchards
D.Improving fruit color
Correct Answer: Repairing trees with damaged trunks/girdled by rodents
Explanation:Bridge grafting involves connecting the healthy bark below a wound to the healthy bark above it using scion sticks, essentially 'bridging' the gap to restore sap flow.
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32A filler crop (like papaya) is most easily accommodated in which system?
A.Hexagonal
B.Quincunx
C.Contour
D.High Density Planting
Correct Answer: Quincunx
Explanation:The Quincunx system is explicitly designed to have a permanent crop at the corners of a square and a temporary filler crop (short duration) in the center.
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33Which of the following is NOT a principle of orchard establishment?
A.Selection of proper site
B.Planning of layout
C.Selection of suitable varieties
D.Planting trees randomly to mimic nature
Correct Answer: Planting trees randomly to mimic nature
Explanation:Commercial orchards require systematic layout (Square, Rectangular, etc.) for efficient management, irrigation, and mechanization, not random planting.
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34The pruning cut aimed at checking the flow of sap to specific parts to correct the C:N ratio is generally called:
A.Detailed pruning
B.Ringing/Girdling
C.Heading back
D.Pollarding
Correct Answer: Ringing/Girdling
Explanation:Girdling/Ringing manipulates the Carbon:Nitrogen ratio by trapping carbohydrates (Carbon) above the cut, favoring fruiting.
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35Scaffold branches refer to:
A.The roots of the tree
B.The temporary branches removed annually
C.The main structural branches arising from the trunk
D.The fruit-bearing spurs
Correct Answer: The main structural branches arising from the trunk
Explanation:Scaffold branches are the primary limbs that form the permanent framework of the tree.
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36In the Open Center system, at what height is the main trunk usually headed back at planting?
A.10 - 15 cm
B.40 - 50 cm
C.1.5 - 2 meters
D.It is not cut at all
Correct Answer: 40 - 50 cm
Explanation:To force lateral branching low down for an open center, the main stem is headed back typically at 40-75 cm (commonly cited around 45-60 cm depending on species).
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37Which of the following represents a summer pruning operation?
A.Heavy heading back of structural limbs
B.Pinching or tipping of soft shoots
C.Root pruning
D.Frame working
Correct Answer: Pinching or tipping of soft shoots
Explanation:Summer pruning is usually light and involves pinching, tipping, or deshooting water sprouts to direct growth while the tree is active.
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38The concept of the C:N Ratio in pruning suggests that:
A.High Nitrogen promotes flowering
B.High Carbohydrates relative to Nitrogen promotes flowering
C.Equal C and N stops growth
D.Low Carbohydrates promotes fruiting
Correct Answer: High Carbohydrates relative to Nitrogen promotes flowering
Explanation:A high C:N ratio (accumulation of carbohydrates) favors reproductive growth (flowering), while a low C:N ratio (high nitrogen) favors vegetative growth.
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39When rejuvenating an old orchard, 'staging' the pruning over 3-4 years is recommended to:
A.Save labor costs
B.Avoid excessive water sprout growth and shock to the tree
C.Wait for the market price to rise
D.Allow pests to leave slowly
Correct Answer: Avoid excessive water sprout growth and shock to the tree
Explanation:Cutting an entire old tree back at once causes severe shock and excessive vegetative regrowth (water sprouts). Doing it gradually maintains balance.
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40Bending of branches is a training method used to:
A.Increase tree height
B.Make the branches break
C.Increase the C:N ratio and induce fruit bud formation
D.Facilitate ease of climbing
Correct Answer: Increase the C:N ratio and induce fruit bud formation
Explanation:Bending branches (often to horizontal) slows sap flow, increases carbohydrate accumulation (C:N ratio), and exposes the branch to light, promoting fruit buds.
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41Which system of planting is calculated using the formula: (approx)?
A.Square
B.Hexagonal
C.Quincunx
D.Rectangular
Correct Answer: Quincunx
Explanation:The Quincunx system adds a 5th tree to every square. While not exactly double due to border effects, the population is roughly that of the Square system initially.
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42Water sprouts are:
A.Roots growing in water
B.Vigorous, vertical, vegetative shoots arising from old wood
C.Fruiting spurs
D.Diseased branches
Correct Answer: Vigorous, vertical, vegetative shoots arising from old wood
Explanation:Water sprouts are fast-growing, upright vegetative shoots that often appear after heavy pruning. They are usually unproductive and crowd the canopy.
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43The 'double hedge' system is a variation of:
A.High Density Planting
B.Contour planting
C.Quincunx planting
D.Hexagonal planting
Correct Answer: High Density Planting
Explanation:The double hedge system involves planting two rows very close together, followed by a wider alley, to increase density and facilitate mechanical harvesting.
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44Which tool is best for Top Working thick limbs?
A.Budding knife
B.Pruning saw and grafting knife
C.Hedge shears
D.Secateurs
Correct Answer: Pruning saw and grafting knife
Explanation:Top working involves cutting thick limbs (requiring a saw) and inserting scions (requiring a sharp grafting knife/chisel for cleft or bark grafting).
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45To ensure straight rows during orchard layout, what is commonly used?
A.Just visual estimation
B.Planting board
C.Compass
D.Walking pacing
Correct Answer: Planting board
Explanation:A planting board is a device used to maintain the exact position of the peg (tree location) while digging the pit, ensuring the tree is planted exactly where the layout peg was.
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46During rejuvenation, cleaning of the trunk refers to:
A.Washing with soap
B.Removing loose bark, moss, and lichens
C.Painting with oil
D.Wrapping with plastic
Correct Answer: Removing loose bark, moss, and lichens
Explanation:Old trees often harbor pests and diseases in loose bark and moss. Cleaning involves scraping these off to improve tree health.
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47In the Hexagonal system, the angle between adjacent rows is:
A.
B.
C.
D.
Correct Answer:
Explanation:The system is based on equilateral triangles, where all internal angles are .
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48The removal of suckers (shoots arising from rootstock) is known as:
A.Desuckering
B.Heading back
C.Notching
D.Pollarding
Correct Answer: Desuckering
Explanation:Desuckering is the removal of suckers arising from the rootstock below the graft union, which compete with the scion variety.
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49What is the main benefit of the Rectangular system over the Square system?
A.More plants per acre
B.Better cross-pollination
C.Facilitates mechanical cultivation in one direction
D.Prevents soil erosion
Correct Answer: Facilitates mechanical cultivation in one direction
Explanation:By having wider inter-row spacing, the rectangular system allows tractors and machinery to pass easily between rows, even if the intra-row spacing is tighter.
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50Pollarding is a severe pruning method where:
A.Roots are cut
B.The main limbs are cut back to the trunk annually to produce a flush of new shoots
C.Only fruit buds are removed
D.The bark is peeled off
Correct Answer: The main limbs are cut back to the trunk annually to produce a flush of new shoots
Explanation:Pollarding involves cutting back branches to the main trunk or a knuckle every year, often used in forestry or ornamental horticulture, but less common in fruit production except for specific biomass or fodder systems.