🎨 Cultivation Practices
Location, Site, Lay out, System of planting, Training, Nurseries
Location and Site selection of orchard
Location
👉🏻 Refers to geography of the field in relation to city, highway, town etc. Location is primarily about accessibility and market proximity. An orchard located near a highway or city has advantages in terms of transportation, labour availability, and access to markets, which directly affects profitability.
Site of orchard
- Place in relation to topography, altitude, water body and other factor which affect tree beavering. Unlike location, site refers to the micro-environmental conditions that directly influence the health and productivity of the fruit trees.
- Factors affecting selection of site:
- Land slope: Should not be more than 5%. If slope more than 15% unsuitable for orchard. Gentle slopes (up to 5%) are ideal because they allow adequate drainage without causing soil erosion. Steep slopes make mechanized operations difficult and increase the risk of soil and nutrient loss.
- Direction of slope: Southern slope receives more sunshine hence produce early flowering so, early crop can be taken. In the Northern Hemisphere, a south-facing slope gets maximum sunlight exposure, which warms the soil earlier in spring and promotes early growth. Conversely, north-facing slopes are cooler and may delay flowering.
- Soil fertility:
- High fertility requiring crops: Mango, Citrus, Grape. These crops have high nutrient demands and perform best in rich, well-drained soils with good organic matter content.
- Poor fertile crops: Phalsa, Aonla. These hardy crops can produce satisfactory yields even in marginal soils with lower fertility, making them suitable for less productive lands.
- Soil texture:
- Light texture for papaya and Ber. Sandy or light-textured soils provide excellent drainage, which is essential for crops like papaya that are very susceptible to waterlogging. Ber, being a drought-hardy crop, also thrives in such conditions.
Lay out of orchard
- It includes system of planting and planting distance. The layout determines how trees are arranged in the orchard, which affects sunlight interception, air circulation, ease of cultural operations, and ultimately the yield and quality of the fruit crop.
System of planting
Square system
- Simplest and widely adopted/popular method. It is preferred by most growers due to its ease of layout and simplicity in carrying out intercultural operations.
- In this method R x R and P x P distances are kept similar. This means the spacing between rows equals the spacing between plants within a row.
- The plants are planted exactly at right angle at each corner. Each tree occupies the corner of a square.
- Number of plants/ha = 10,000 m2/x2
- Where, x2 = R x R/P x P
Rectangular system
- More plants can be planted as compare to square system. The rectangular system accommodates more trees per unit area because the spacing is optimized differently.
- Keeping more space between row to row and plant to plant distance is kept comparatively less. The wider row spacing allows for easy movement of machinery and implements, while the closer plant spacing maximizes the number of trees.
- Number of plants = 10,000 m2/X x Y.
Hexagonal or Equilateral Triangle System
- It accommodated 15% more plants than square system. This is one of the most important facts to remember about this system -- it provides a 15% increase in plant population.
- The plants are planted at the corner of equilateral triangle. Each tree is equidistant from all its neighbouring trees, ensuring uniform distribution of space.
- This is very intense method of planting and difficult to layout. The complexity arises because the rows are staggered, requiring precise measurement during planting.
- Requires fertile land. Since more trees per hectare compete for nutrients, the soil must be rich and well-nourished to support the higher plant density.
Quincunx system/diagonal/filler system
- Most suitable in highly fertile soil. The additional filler plant in the centre demands extra nutrients from the soil.
- This method is similar to square system but an additional filler plant is planted in the center of square. The filler plant is typically a short-lived, quick-bearing fruit tree that provides income during the early non-bearing years of the main crop.
- It accommodates 1.5 times more plant than square system adopted only when tree spacing exceeds 8 m or fruit crop which are very slow growing in habit. For slow-growing crops like mango, it takes many years before the trees fully utilize the available space, so filler plants make productive use of the vacant land in the interim.
- The most common filler plants are papaya, kinnow, phalsa, guava, peach, plum etc. These are chosen because they are fast-growing, come to bearing quickly, and can be removed when the main crop trees expand.
- Filler plants give additional income for non-bearing orchard. This is a key economic advantage -- the grower can earn returns from the filler crop while waiting for the main fruit trees to reach productive maturity.
Contour (Terrace) system
- Suitable for hills and undulated lands. This system is specifically designed for sloped terrain where other planting systems would lead to soil erosion and water runoff.
- Planting distance is not uniform. Trees are planted along contour lines (lines of equal elevation), so the spacing varies based on the slope gradient.
- Bench terrace is popular in hills. In bench terracing, the hill slope is converted into a series of flat steps where trees are planted, allowing for better water retention and prevention of soil erosion.
Triangular system
- In this system, trees are planted as in the square system but the plants in the 2nd, 4th, 6th and such other alternate rows are planted midway between the 1st, 3rd, 5th and such other alternative rows. This system provides more open space for the trees and for intercrop. The staggered arrangement ensures better light penetration and air movement between trees.
- It is mostly used in HDP (High Density Planting). HDP is an increasingly popular approach that maximizes yield per unit area by planting more trees using dwarf rootstocks or compact varieties.
- E.g. Amrapali variety of mango. Amrapali is a naturally dwarf and regular-bearing hybrid (Dashehari x Neelum) that is ideally suited for HDP systems.
Intercropping
- Suitable plants for intercrops in orchard:
| Main crop | Intercrop |
|---|---|
| Mango | Papaya, Garlic |
| Coconut | Banana |
Intercropping in orchards involves growing short-duration crops (vegetables, pulses, or other plants) between the rows of fruit trees during their early non-bearing years. This practice provides additional income, improves soil health, controls weeds, and makes efficient use of available land, sunlight, and water. However, tall-growing crops that compete with fruit trees for light and nutrients should be avoided.
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Location and Site selection of orchard
Location
👉🏻 Refers to geography of the field in relation to city, highway, town etc. Location is primarily about accessibility and market proximity. An orchard located near a highway or city has advantages in terms of transportation, labour availability, and access to markets, which directly affects profitability.
Site of orchard
- Place in relation to topography, altitude, water body and other factor which affect tree beavering. Unlike location, site refers to the micro-environmental conditions that directly influence the health and productivity of the fruit trees.
- Factors affecting selection of site:
- Land slope: Should not be more than 5%. If slope more than 15% unsuitable for orchard. Gentle slopes (up to 5%) are ideal because they allow adequate drainage without causing soil erosion. Steep slopes make mechanized operations difficult and increase the risk of soil and nutrient loss.
- Direction of slope: Southern slope receives more sunshine hence produce early flowering so, early crop can be taken. In the Northern Hemisphere, a south-facing slope gets maximum sunlight exposure, which warms the soil earlier in spring and promotes early growth. Conversely, north-facing slopes are cooler and may delay flowering.
- Soil fertility:
- High fertility requiring crops: Mango, Citrus, Grape. These crops have high nutrient demands and perform best in rich, well-drained soils with good organic matter content.
- Poor fertile crops: Phalsa, Aonla. These hardy crops can produce satisfactory yields even in marginal soils with lower fertility, making them suitable for less productive lands.
- Soil texture:
- Light texture for papaya and Ber. Sandy or light-textured soils provide excellent drainage, which is essential for crops like papaya that are very susceptible to waterlogging. Ber, being a drought-hardy crop, also thrives in such conditions.
Lay out of orchard
- It includes system of planting and planting distance. The layout determines how trees are arranged in the orchard, which affects sunlight interception, air circulation, ease of cultural operations, and ultimately the yield and quality of the fruit crop.
System of planting
Square system
- Simplest and widely adopted/popular method. It is preferred by most growers due to its ease of layout and simplicity in carrying out intercultural operations.
- In this method R x R and P x P distances are kept similar. This means the spacing between rows equals the spacing between plants within a row.
- The plants are planted exactly at right angle at each corner. Each tree occupies the corner of a square.
- Number of plants/ha = 10,000 m2/x2
- Where, x2 = R x R/P x P
Rectangular system
- More plants can be planted as compare to square system. The rectangular system accommodates more trees per unit area because the spacing is optimized differently.
- Keeping more space between row to row and plant to plant distance is kept comparatively less. The wider row spacing allows for easy movement of machinery and implements, while the closer plant spacing maximizes the number of trees.
- Number of plants = 10,000 m2/X x Y.
Hexagonal or Equilateral Triangle System
- It accommodated 15% more plants than square system. This is one of the most important facts to remember about this system -- it provides a 15% increase in plant population.
- The plants are planted at the corner of equilateral triangle. Each tree is equidistant from all its neighbouring trees, ensuring uniform distribution of space.
- This is very intense method of planting and difficult to layout. The complexity arises because the rows are staggered, requiring precise measurement during planting.
- Requires fertile land. Since more trees per hectare compete for nutrients, the soil must be rich and well-nourished to support the higher plant density.
Quincunx system/diagonal/filler system
- Most suitable in highly fertile soil. The additional filler plant in the centre demands extra nutrients from the soil.
- This method is similar to square system but an additional filler plant is planted in the center of square. The filler plant is typically a short-lived, quick-bearing fruit tree that provides income during the early non-bearing years of the main crop.
- It accommodates 1.5 times more plant than square system adopted only when tree spacing exceeds 8 m or fruit crop which are very slow growing in habit. For slow-growing crops like mango, it takes many years before the trees fully utilize the available space, so filler plants make productive use of the vacant land in the interim.
- The most common filler plants are papaya, kinnow, phalsa, guava, peach, plum etc. These are chosen because they are fast-growing, come to bearing quickly, and can be removed when the main crop trees expand.
- Filler plants give additional income for non-bearing orchard. This is a key economic advantage -- the grower can earn returns from the filler crop while waiting for the main fruit trees to reach productive maturity.
Contour (Terrace) system
- Suitable for hills and undulated lands. This system is specifically designed for sloped terrain where other planting systems would lead to soil erosion and water runoff.
- Planting distance is not uniform. Trees are planted along contour lines (lines of equal elevation), so the spacing varies based on the slope gradient.
- Bench terrace is popular in hills. In bench terracing, the hill slope is converted into a series of flat steps where trees are planted, allowing for better water retention and prevention of soil erosion.
Triangular system
- In this system, trees are planted as in the square system but the plants in the 2nd, 4th, 6th and such other alternate rows are planted midway between the 1st, 3rd, 5th and such other alternative rows. This system provides more open space for the trees and for intercrop. The staggered arrangement ensures better light penetration and air movement between trees.
- It is mostly used in HDP (High Density Planting). HDP is an increasingly popular approach that maximizes yield per unit area by planting more trees using dwarf rootstocks or compact varieties.
- E.g. Amrapali variety of mango. Amrapali is a naturally dwarf and regular-bearing hybrid (Dashehari x Neelum) that is ideally suited for HDP systems.
Intercropping
- Suitable plants for intercrops in orchard:
| Main crop | Intercrop |
|---|---|
| Mango | Papaya, Garlic |
| Coconut | Banana |
Intercropping in orchards involves growing short-duration crops (vegetables, pulses, or other plants) between the rows of fruit trees during their early non-bearing years. This practice provides additional income, improves soil health, controls weeds, and makes efficient use of available land, sunlight, and water. However, tall-growing crops that compete with fruit trees for light and nutrients should be avoided.
Pruning
- Removal of any excess or undesirable/ unproductive branches, shoots or any other parts of plants so as to allow the remaining part to grow normally or according to desire of pruner is called pruning. Exams Pruning is one of the most important cultural practices in fruit crop management and is essential for maintaining tree health and productivity.
- It improves the shape of plant, influences the growth behavior, flowering time and fruitfulness, besides improving the quality of fruit. Well-pruned trees receive better sunlight and air circulation, which leads to higher quality fruits with better colour and size.
- Pruning is started in later part of plant life when becomes produce fruits and flowers. It is primarily a practice for mature, bearing trees rather than young trees.
- Pruning time in north India: April – May. This timing coincides with the end of the dormant period when new growth is about to begin, allowing pruning wounds to heal quickly.
Method of pruning
Thinning Out
- This refers to the removal of the branches entirely from its base leaving no stubs. Thinning out opens up the canopy, allowing more sunlight and air to reach the interior of the tree. It does not stimulate vigorous regrowth at the point of the cut.
- Does not give strength to the tree -- it simply removes branches without promoting new structural growth.
- No re-growth is allowed at the point of removal.
Heading Back
- This refers to pruning or cutting of terminal part of main stem or all or few of the branches leaving a basal portion. Unlike thinning out, heading back stimulates the growth of lateral buds below the cut, resulting in a denser, more compact canopy.
- This method is often followed for hedges, ornamental shrubs, first dormant pruning and October pruning in grapes.
- Only tops of branches are headed back or cut off (light pruning).
- Encourages lateral growth.
Dehorning
- Cutting away the main limbs or thick major branches of a tree.
- It is done to remove overcrowding and intermingling of branches.
- Also done to induce flowering in unproductive trees.
Bulk Pruning
- Heavy pruning all over the tree.
- For good fruit production, only judicious heading back or thinning out should be done -- bulk pruning is generally avoided as it weakens the tree.
Skeletonizing
- An extreme form of pruning where almost all the branches are removed, leaving only the main scaffold or skeleton of the tree.
- Used for rejuvenation of old, unproductive trees to promote entirely new growth.
Ringing/ Girdling
- In this method a circular ring measuring about 3 cm in length is removed to hasten bearing by allowing greater accumulation of photosynthesis in upward portion of the plant. Ringing works by interrupting the downward flow of photosynthates (sugars produced by leaves) through the phloem, causing them to accumulate above the ring. This accumulation promotes flower bud formation and fruit set.
- This is important practiced is done in grapes. In grapes, ringing is specifically done to increase berry size and promote early ripening.
Notching
- Making a notch above a bud by removing a wedge-shaped piece of bark is termed as notching. The notch interrupts the flow of auxin (a growth hormone) from the terminal bud, reducing apical dominance on that particular bud.
- It checks the influence of hormone and encourages growth. By blocking the inhibitory effect of auxin from above, the bud below the notch is stimulated to sprout and grow.
- Notching is commonly practiced done in Fig. In fig trees, notching helps promote the growth of lateral branches, improving the tree's framework and productivity.
Disbudding or Rubbing off
- Here the young buds are nipped without giving them the chance to sprout. This is done at a very early stage when buds are still soft and can be easily removed by hand.
- The buds may be either Vegetative or reproductive. Removing vegetative buds redirects energy to remaining buds, while removing reproductive buds (flower buds) concentrates energy into fewer flowers, producing larger, better-quality blooms or fruits.
- This is practiced regularly in flowering plants to make the terminal bud to give a bigger flower. In crops like chrysanthemum and carnation, disbudding is a standard practice to produce exhibition-quality blooms.
Pinching and Topping
- This refers to the removal of the tip of the shoot alone with a view to stimulate mildly the lateral growth. Pinching is a mild form of pruning that breaks apical dominance, encouraging the plant to branch out and become bushier.
- This is practiced regularly in coffee to remove the apical dominance and to allow the side brandies to grow vigouresely. In coffee, this practice ensures a wider, more spreading canopy that produces more fruiting branches.
- E.g. Deshi cotton.
Top Working
- It is a technique or method of rejuvenation where in the objective is to upgrade seedling plantations of inferior varieties with superior commercial cultivars or hybrids suitable for domestic or export market or the desired variety of the grower. Eg Cashew tree. Top working is essentially a way to convert an existing, less profitable tree into a high-value one without uprooting and replanting.
- The technique involves grafting with procured scions of desired variety on shoots emerged on pruned branches by adopting Tongue grafting during monsoon season. (Season of top working slightly varies from species as it also depends on availability of good shoot and scions). The existing tree provides a well-established root system, enabling the grafted variety to come into bearing much faster than a newly planted tree.
- The scion shoots and the emerged shoots should be of same thickness. Matching the diameter of the scion and rootstock shoot is critical for successful cambial alignment and graft union formation.
Types of Pruning
👉🏻 Pruning can be divided into two based on the seasons in which it is done:
Dormant Pruning
- Most often done during the winter - commonly referred to as dormant pruning. During winter, trees are in a resting state with no active growth, making it the ideal time for major pruning operations.
- Dormant pruning is an invigorating (enerziging) process. When a tree is pruned during dormancy, the stored carbohydrate reserves in the roots are distributed among fewer buds and branches, resulting in more vigorous growth in the following spring.
- Heavy dormant pruning also promotes excessive vegetative vigor. This can be a problem if the goal is to promote fruiting rather than vegetative growth, so the extent of dormant pruning must be carefully managed.
- Timing of dormant pruning is critical. Pruning should begin as late in the winter as possible to avoid winter injury. Pruning too early in winter exposes fresh cuts to severe cold, which can damage tissues and invite disease.
Summer Pruning
- Done during summers - referred to as summer pruning. Summer pruning is used for fine-tuning the tree canopy rather than major structural changes.
- It's severity is much less, less common, more specific and selective. Only targeted branches and shoots are removed, making it a more precise operation.
- Eliminates an energy or food producing portion of the tree and results in reduced tree growth. Since leaves are actively photosynthesizing during summer, removing them reduces the tree's ability to produce food, leading to a dwarfing effect.
- For most purposes, summer pruning should be limited to removing the upright and vigorous current season's growth; only thin cuts should be used. Upright, vigorous shoots (called water sprouts or suckers) are unproductive and shade the interior canopy, so removing them improves light distribution.
- To minimize the potential for winter injury, summer pruning should not be done after the end of July. Late summer pruning can stimulate new tender growth that does not have time to harden off before winter, making it vulnerable to frost damage.
Pruning based on height
| Pruning Type | Height |
|---|---|
| Low Head Pruning | 0.7 m - 0.9 m |
| Medium Head Pruning | 0.9 m - 1.2 m |
| High Head Pruning | More than 1.2 m |
Technique of training and their timings
| Crop | Time | Technique |
|---|---|---|
| Apple | Late winter (Dec-Jan) | Light thinning coupled with heading back |
| Pear | Late winter (Dec-Jan) | A combination of thinning out and heading back |
| Plum | Late winter (Dec-Jan) | A combination of thinning out and heading back |
| Citrus | Citrus is rarely pruned except lemon | — |
| Grape | ||
| North India | Late winter (Jan) | Heading back of cane |
| South India | Summer pruning (Aug) | Heading back to one or two buds, which is almost thinning out |
| South India | Winter pruning (Sept-Oct) | Heading back to cane |
| Mango | After harvest | Thinning |
| Phalsa | ||
| North | Late winter to early spring | Heading back |
| South | Dec-Jan | Heading back |
| Ber | Summer (April-May) | Heading back and thinning out of old branches |
Training
- Training is a practice in which tree growth is directed into a desired shape and form. Unlike pruning (which is corrective), training is a proactive practice that guides the tree's structural development from the beginning.
- Judicious removal of plant parts to develop a proper shape of plant capable of bearing heavy crop load. A well-trained tree has a strong framework that can support the weight of a full crop without branch breakage.
- It is done from earlier part of plant life. Training begins soon after planting and continues for the first few years until the desired tree architecture is established.
- It determines the general character and even details of the plants outline and of its branching and framework. The scaffold branches established during training form the permanent structure of the tree for its entire productive life.
Objectives of Training
- To admit more sunlight and air to the centre of the tree and to expose maximum leaf surface to the sunlight. Good light distribution is essential for uniform fruit colour, ripening, and quality.
- To direct the growth of the tree so that various cultural operations, such as spraying, and harvesting are performed at the lowest cost. A properly trained tree enables efficient orchard management and reduces labour costs.
- To protect the tree from sunburn and wind damage. The arrangement of branches can provide shade to the trunk and scaffold limbs, preventing sunscald.
- To secure a balanced distribution of fruit-bearing parts on the main limbs of the plant. This ensures uniform fruiting throughout the canopy and prevents overloading on any single branch.
Principle of Training
- The principle objective in training a young tree is to develop strong framework of scaffold branches. Scaffold branches are the main structural limbs that arise from the trunk and form the tree's permanent framework. Their angle of attachment, spacing, and distribution are critical.
- All methods of training must stand or fall by their ability to achieve a tree capable of bearing high yielding fruits without undue breakage. A well-trained tree should have branches with wide crotch angles (45-60 degrees from the trunk) for maximum strength.
Types of Training Systems
Central Leader System
- Main trunk extends from the soil surface to the total height of the tree. In this system, the central trunk (leader) is maintained as the dominant vertical axis throughout the life of the tree.
- Several side branches grow at different heights in various directions. They are usually lower in vigour and productivity. These side branches are subordinate to the central leader, creating a pyramidal or Christmas-tree-like shape.
- This system of training is adopted such types of trees which have a pronounced apical dominance. Trees with strong apical dominance naturally tend to grow in this form, making the system easier to implement.
- On account of vigorous and rapid growth of the main trunk the tree develops a close center and grows to great heights. The strong central leader enables the tree to grow very tall, which can be both an advantage (structural strength) and a disadvantage (difficulty in management).
- Since the plants would be very tall, the spraying and harvesting operation becomes difficult and costly e.g. pear and some varieties of apple.
✅ Advantages
- Such trees are structurally best suited to bear crop load and to resist the damage from strong winds. The central trunk acts as a strong supporting pillar, distributing the weight of the crop evenly.
❌ Disadvantages
- Trees under this system grow too tall and are less spreading.
- Tree management (spraying, pruning, thinning and harvesting) is difficult.
- This method not suitable for high altitude and hot arid places where wind velocity is high.
- Shading effect on interior canopy (the lower branches of such trees may be so much in shade that the fruit may not be able to develop proper colour). This is a significant problem for crops where fruit colour is an important quality parameter.
Open Centre System
- In this system, the main trunk (main stem) is allowed to grow only up to a certain height (upto 1 m) by cutting within a year of planting and all the subsequent vegetative growth promoted by lateral branches. This creates a vase-shaped or bowl-shaped tree with an open centre that allows maximum light to reach all parts of the canopy.
- This results in a low head and as such the bulk of crop is borne closer to the ground. The low-growing nature of the tree makes all orchard operations significantly easier.
✅ Advantages
- The trees so trained allow maximum sunshine to reach their branches. The open centre ensures that sunlight penetrates deep into the canopy.
- Better coloration of fruits on the interior side of the tree. Since light reaches all parts of the tree, fruits develop uniform and attractive colour.
- Trees are more fruitful and low spreading tree greatly facilitate operations like spraying, pruning, thinning and harvesting. The reduced height translates to lower labour costs and safer working conditions.
❌ Disadvantages
- Such trees are structurally weak, and their limbs are more likely to break with crop load and strong winds. Without a central leader, the branches lack a strong central support, making them prone to splitting, especially at narrow crotch angles.
- Not suitable for frost prone area. The open canopy exposes the tree to cold air settling into the centre, increasing the risk of frost damage.
- This system does not only need severe pruning to start with but also constant effort to maintain its form through drastic pruning treatment.
Modified Leader System
- This system stands intermediate between the central leader and the open center, combining the advantages of both the system. It is often considered the best compromise between structural strength and ease of management.
- It is developed first by training the tree to the leader type allowing the central stem to grow unsharpened for first four to five years. During these initial years, the tree develops a strong trunk and well-spaced scaffold branches.
- The main branches are allowed to arise on the main stem at reasonable intervals. After the required number of branches has arisen the main stem is cut off. By removing the central leader after sufficient scaffold branches are established, the tree transitions to a spreading form with good structural integrity.
- Most widely adopted method for fruit crops. Its balance of strength, productivity, and ease of management makes it the preferred training system for most commercial orchards.
- The top laterals will take the place of the main stem. The result in a fairly strong and moderately spreading type of tress. E.g. Pear, Apple, Walnuts, etc.
✅ Advantages
- The branches are well distributed, allowing plenty of sunshine to reach the interior of the tree.
- The trees are structurally strong and not prone to limb breakage. The well-spaced scaffold branches with wide crotch angles provide excellent strength.
- This is most acceptable for commercial fruit production. It offers the best balance of high yield, good fruit quality, and manageable tree size.
Tools
Secateur
- Pruning shears, also called hand pruners (in American English), or secateurs (in British English), are a type of scissors for use on plants. They are the most commonly used pruning tool in orchards and gardens.
- They are strong enough to prune hard branches of trees and woody shrubs, sometimes up to two centimetres thick. For branches thicker than this, loppers or pruning saws should be used.
- They are used in gardening, arboriculture, plant nursery works, farming, flower arranging, and nature conservation, where fine-scale habitat management is required.
Hedge Shear
- A hedge trimmer, shrub trimmer, or bush trimmer is a gardening tool or machine used for trimming (cutting, pruning) hedges or solitary shrubs (bushes). It has long, flat blades designed for making straight, uniform cuts across the surface of hedges.
Bill Hook
- It is used to cut the hard branches and Woody shrubs of plants. exams-2020 The bill hook has a curved blade that provides leverage for cutting through thick woody growth. It is particularly useful for clearing undergrowth and managing overgrown vegetation.
Grafting Knife
The grafting knife is a specialized tool with a sharp, thin blade designed for making precise cuts during grafting and budding operations. A clean, smooth cut is essential for successful graft union formation.
Trowel
A trowel is a small hand tool used for digging, planting, and transplanting seedlings. It is an essential tool in nursery work and kitchen gardening.
Nurseries
👉🏻 Nursery is place where young crop plants are raised under intensive care for later transplanting to the field. A well-managed nursery is the foundation of successful horticulture, as the quality of planting material directly determines the performance of the orchard.
Classification
-
On the basis of irrigation facilities
- Dry Nursery -- Relies on rainfall for irrigation; suitable for hardy species in regions with adequate rainfall.
- We Nursery -- Has organized irrigation facilities; more suitable for raising quality planting material.
-
Temporary Nursery: Flying Nursery -- Established for a specific, short-term purpose and is dismantled after the planting material has been raised and distributed.
-
Permanent Nursery -- A well-established nursery with permanent infrastructure that operates year after year, continuously producing planting material.
-
On the basis of size of production
- Commercial Nursery -- Operates on a large scale for commercial sale of plants to growers and the general public.
- Small Scale Nursery -- Produces plants on a limited scale, often for personal use or local distribution.
-
On the basis of kind of plant material raised
- Fruit nursery -- Specializes in raising fruit tree saplings, grafts, and budded plants.
- Vegetable nursery -- Raises vegetable seedlings for transplanting.
- Flowering plant nursery -- Produces ornamental and flowering plants.
- Forest Nursery -- Raises forest tree seedlings for afforestation and reforestation programmes.
-
Irrigation Methods in Nursery
- Flow or flood irrigation
- Furrow irrigation
- Overhead irrigation
-
Rose canes
-
Automizer
-
Sprinkler System
The choice of irrigation method depends on the type of plants being raised, the nursery size, and the available water supply. Overhead irrigation and sprinkler systems are preferred in modern nurseries as they provide uniform water distribution and can be used for applying foliar nutrients and pesticides as well.
- Water
- The water for nursery should have pH between 5.5 to 7.5 and contain salt less than 400 ppm. Water quality is critical in nursery management -- alkaline or saline water can damage tender seedlings and affect root development.
- Amount of water required for raising one lakh plants in dry areas during summer is 20-30 cc/plant/day and during winter is 10 cc/plant/day. The water requirement is lower in winter due to reduced evapotranspiration and lower temperatures.
Orchard Establishment Decision Guide
Key decisions when establishing a fruit orchard:
| Decision | Options | How to Choose |
|---|---|---|
| Layout system | Square, rectangular, hexagonal, contour, quincunx | Square = simplest, suits flat land. Hexagonal = 15% more trees/area. Contour = hilly terrain. Quincunx = filler trees between permanent trees for early income |
| Spacing | Varies by crop and vigour | Mango: 10×10m. Citrus: 6×6m. Guava: 6×6m. Banana: 1.8×1.8m. Wider for vigorous rootstocks |
| Filler crops | Short-duration fruit or vegetable crops between young trees | Papaya, guava, or vegetables as fillers until main crop (mango) starts bearing at 5-7 years. Provides early income from same land |
| Training system | Open centre, modified leader, espalier | Open centre for mango/guava (light penetration). Modified leader for apple/pear. Choice affects light, spray access, and yield |
| Irrigation | Basin, drip, micro-sprinkler | Drip saves 40-60% water; ideal for fruit crops with wide spacing. Basin for flood-irrigated areas |
Economics of filler crops: A mango orchard takes 5-7 years to bear fruit. Without filler crops, the farmer earns nothing from the land for years. By planting papaya as filler (bears in 10-12 months), the farmer earns ₹1-2 lakh/acre/year while waiting for mango to establish.
Summary Cheat Sheet
| Concept / Topic | Key Details / Explanation |
|---|---|
| Location vs site | Location refers to market access and nearness to roads or towns, while site refers to field conditions like topography, altitude, nearby water, and other factors affecting tree growth. |
| Site selection factors | Ideal orchard slope is up to 5%, slopes above 15% are unsuitable, south-facing slopes promote early flowering, mango-citrus-grape need fertile soils, phalsa and aonla tolerate poorer soils, and light soils suit papaya and ber. |
| Orchard layout basics | Orchard layout includes planting system and spacing and affects light interception, air movement, ease of operations, and final yield. |
| Square and rectangular systems | Square is the simplest and most widely used system with equal row and plant spacing; rectangular uses wider row spacing and relatively closer plant spacing to accommodate more plants. |
| Hexagonal and quincunx systems | Hexagonal or equilateral triangle system accommodates about 15% more plants but is harder to lay out and needs fertile land; quincunx adds a filler plant in the center, can hold about 1.5 times the square-system population, and is useful where main trees are slow-growing or widely spaced. |
| Contour and triangular systems | Contour or terrace system suits hills and uneven lands with bench terraces common in hills, while triangular planting is used in HDP and is associated here with Amrapali mango. |
Summary Continued
| Concept / Topic | Key Details / Explanation |
|---|---|
| Intercropping | Orchard intercropping uses short-duration crops in young orchards; examples given are papaya or garlic in mango and banana in coconut. |
| Pruning basics | Pruning removes undesirable or unproductive parts to improve plant shape, flowering, fruitfulness, and fruit quality; the lesson gives April-May as pruning time in North India. |
| Major pruning methods | Thinning out removes branches from the base without regrowth, heading back removes terminal portions and encourages lateral growth, and dehorning removes major limbs to reduce overcrowding and induce flowering in unproductive trees. |
| Severe pruning methods | Bulk pruning is heavy pruning over the whole tree and is generally avoided, while skeletonizing is extreme pruning used to rejuvenate old unproductive trees. |
| Ringing, notching, and disbudding | Ringing or girdling removes about a 3 cm ring to hasten bearing and is important in grapes, notching above a bud reduces apical dominance and is noted in fig, and disbudding removes young buds and is common in flowering plants for bigger blooms. |
| Pinching and top working | Pinching removes shoot tips to promote mild lateral growth and is common in coffee; top working upgrades inferior seedling trees by grafting desired scions, with tongue grafting during monsoon mentioned here. |
Summary Continued
| Concept / Topic | Key Details / Explanation |
|---|---|
| Pruning seasons and height | Dormant pruning is done in winter and is invigorating, summer pruning is lighter and should not continue after July, and pruning heads are classified as low (0.7-0.9 m), medium (0.9-1.2 m), and high (>1.2 m). |
| Training basics | Training begins early in plant life to direct the plant into a desired form and build a strong scaffold framework. |
| Objectives and principle of training | Main objectives are better light and air, easier spraying and harvesting, protection from sunburn and wind, and balanced fruiting; the core principle is to develop strong scaffold branches. |
| Central leader system | Central leader keeps one dominant trunk to the top, suits strongly apical crops like pear and some apple, gives structural strength, but produces tall trees that are harder to spray and harvest. |
| Open centre system | Open centre limits the trunk to about 1 m, encourages laterals, improves light penetration and fruit colour, and makes operations easier, but trees are weaker and not suited to frost-prone areas. |
| Modified leader system | Modified leader combines central leader and open centre, is widely adopted commercially, and gives a strong but moderately spreading tree with good light distribution. |
Continued
| Concept / Topic | Key Details / Explanation |
|---|---|
| Basic orchard tools | Secateur is the main hand pruning tool, hedge shear is for hedges and shrubs, bill hook cuts hard woody branches, grafting knife is for budding and grafting, and trowel is for digging and transplanting. |
| Nursery basics | A nursery is a place where young plants are raised under intensive care for later transplanting. |
| Nursery classification | Nurseries are classified as dry or wet by irrigation, temporary or permanent by duration, commercial or small-scale by size, and fruit, vegetable, flowering, or forest nursery by the crop raised. |
| Nursery irrigation and water | Irrigation methods listed are flood, furrow, overhead, rose can, atomizer, and sprinkler; nursery water should have pH 5.5-7.5 with salts below 400 ppm, and one lakh plants in dry areas need about 20-30 cc/plant/day in summer and 10 cc/plant/day in winter. |
| Orchard establishment quick facts | Square suits flat land, hexagonal gives about 15% more plants, contour suits hilly land, quincunx uses fillers for early income, and the guide repeats example spacing such as mango 10 x 10 m and banana 1.8 x 1.8 m. |