Podcast
Questions and Answers
What is the primary purpose of a tree nursery?
What is the primary purpose of a tree nursery?
- To grow mature trees for immediate harvesting
- To store seeds for long-term preservation
- To produce tree seedlings until they are ready for planting (correct)
- To conduct research on tree diseases
What distinguishes a temporary nursery from a permanent nursery?
What distinguishes a temporary nursery from a permanent nursery?
- Permanent nurseries are only for native species
- Temporary nurseries are larger in size than permanent nurseries
- Permanent nurseries require more labor than temporary nurseries
- Temporary nurseries meet small reforestation and tree planting targets (correct)
Which benefit is associated with small-scale nurseries being near the planting site?
Which benefit is associated with small-scale nurseries being near the planting site?
- Easier control of nursery diseases
- Improved soil quality for plant growth
- Reduction in transport time and cost (correct)
- Availability of more advanced nursery technology
Which of the following factors is NOT a benefit of small-scale nurseries?
Which of the following factors is NOT a benefit of small-scale nurseries?
What is a key feature of a permanent nursery?
What is a key feature of a permanent nursery?
How do small-scale nurseries generally accommodate the needs of farmers?
How do small-scale nurseries generally accommodate the needs of farmers?
Which of the following statements is accurate regarding the features of tree nurseries?
Which of the following statements is accurate regarding the features of tree nurseries?
Why is it easier to isolate diseases in small-scale nurseries?
Why is it easier to isolate diseases in small-scale nurseries?
What are the three principal components of organic matter?
What are the three principal components of organic matter?
Which type of fertilizer typically has a lower concentration of nutrient elements?
Which type of fertilizer typically has a lower concentration of nutrient elements?
Which of the following is not a poor practice of pricking out seedlings?
Which of the following is not a poor practice of pricking out seedlings?
What is the primary benefit of providing shade for nursery plants?
What is the primary benefit of providing shade for nursery plants?
What is not involved in foliar feeding?
What is not involved in foliar feeding?
What is an appropriate method for applying nutrients to conifer seedlings in container nurseries?
What is an appropriate method for applying nutrients to conifer seedlings in container nurseries?
What is the primary concern when pricking out seedlings?
What is the primary concern when pricking out seedlings?
How does shade benefit nursery plants as they develop?
How does shade benefit nursery plants as they develop?
What factors determine the quantity of water required for a nursery?
What factors determine the quantity of water required for a nursery?
What is the ideal pH range of water for seedling growth?
What is the ideal pH range of water for seedling growth?
What is a consequence of using water with a pH greater than 7?
What is a consequence of using water with a pH greater than 7?
Why is it advisable to locate a nursery close to the planting site?
Why is it advisable to locate a nursery close to the planting site?
What conditions should be avoided for the topography of a nursery?
What conditions should be avoided for the topography of a nursery?
What is a common source of water contamination for irrigation?
What is a common source of water contamination for irrigation?
What should be done during heavy rainfall to prevent damage in a nursery?
What should be done during heavy rainfall to prevent damage in a nursery?
What is the consequence of excessive wind in the nursery location?
What is the consequence of excessive wind in the nursery location?
What is the primary reason for removing unwanted vegetation in the preparation of a permanent nursery?
What is the primary reason for removing unwanted vegetation in the preparation of a permanent nursery?
Which trees should be particularly considered for removal when preparing a nursery?
Which trees should be particularly considered for removal when preparing a nursery?
Why should top soil be removed before leveling the site?
Why should top soil be removed before leveling the site?
What is a recommended method for controlling erosion on sloped sites?
What is a recommended method for controlling erosion on sloped sites?
What should be avoided when planting wind-breaks around a nursery?
What should be avoided when planting wind-breaks around a nursery?
When are terraces particularly recommended for construction?
When are terraces particularly recommended for construction?
What role does top soil play after it has been removed from the nursery site?
What role does top soil play after it has been removed from the nursery site?
What is a key consideration when selecting species for a hedge around a nursery?
What is a key consideration when selecting species for a hedge around a nursery?
What is a crucial practice regarding shade and watering for nursery plants?
What is a crucial practice regarding shade and watering for nursery plants?
How should watering be adjusted when reducing shade for transplants?
How should watering be adjusted when reducing shade for transplants?
What is the main purpose of root pruning in seedlings?
What is the main purpose of root pruning in seedlings?
Which of the following practices is NOT associated with nursery hygiene?
Which of the following practices is NOT associated with nursery hygiene?
What happens to seedlings when their roots grow too far into the ground?
What happens to seedlings when their roots grow too far into the ground?
Which pest is commonly found in nurseries and worsens with water stress?
Which pest is commonly found in nurseries and worsens with water stress?
What condition is described as 'damping off' in nurseries?
What condition is described as 'damping off' in nurseries?
Which of the following is NOT a purpose of root pruning?
Which of the following is NOT a purpose of root pruning?
What is the purpose of hardening-off seedlings?
What is the purpose of hardening-off seedlings?
What method should be used to control watering during the hardening-off process?
What method should be used to control watering during the hardening-off process?
When should shading be removed from seedlings to facilitate hardening-off?
When should shading be removed from seedlings to facilitate hardening-off?
What is a potential consequence of not acclimating seedlings to full sunlight before planting?
What is a potential consequence of not acclimating seedlings to full sunlight before planting?
What is the effect of elevating seedlings during the hardening-off process?
What is the effect of elevating seedlings during the hardening-off process?
How should root pruning be managed for seedlings before planting?
How should root pruning be managed for seedlings before planting?
What should be avoided when controlling watering to prevent seedling shock?
What should be avoided when controlling watering to prevent seedling shock?
Which of the following emphasizes the importance of hardening-off seedlings?
Which of the following emphasizes the importance of hardening-off seedlings?
Flashcards
What is a tree nursery?
What is a tree nursery?
A managed area designed to grow tree seedlings under controlled conditions until they are ready for planting. It can be small-scale or large-scale.
What is a temporary or flying nursery?
What is a temporary or flying nursery?
A nursery that is set up for a short period, often for small-scale reforestation projects.
What is a permanent nursery?
What is a permanent nursery?
A nursery that is established to supply seedlings for a long time.
Why are small-scale nurseries beneficial?
Why are small-scale nurseries beneficial?
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What factors affect the success of a nursery?
What factors affect the success of a nursery?
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What determines the type of nursery?
What determines the type of nursery?
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What's the purpose of a small-scale nursery?
What's the purpose of a small-scale nursery?
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What's the purpose of a permanent nursery?
What's the purpose of a permanent nursery?
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Water Source Assessment
Water Source Assessment
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Water Storage Importance
Water Storage Importance
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Factors Affecting Water Needs
Factors Affecting Water Needs
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Water Needs and Soil Type
Water Needs and Soil Type
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Ideal Water pH
Ideal Water pH
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Water Contamination Threats
Water Contamination Threats
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Nursery Location Importance
Nursery Location Importance
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Nursery Topography
Nursery Topography
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How does shade affect watering needs?
How does shade affect watering needs?
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What shade is needed after transplanting?
What shade is needed after transplanting?
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Why is weeding important?
Why is weeding important?
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What happens if roots grow too much?
What happens if roots grow too much?
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Why prune roots?
Why prune roots?
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What are the main purposes of root pruning?
What are the main purposes of root pruning?
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How does nursery hygiene influence seedlings?
How does nursery hygiene influence seedlings?
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What's a common pest in nurseries?
What's a common pest in nurseries?
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Fertilization in Nurseries
Fertilization in Nurseries
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Organic matter
Organic matter
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Nutrient Application in Container Nurseries
Nutrient Application in Container Nurseries
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Pricking Out Seedlings
Pricking Out Seedlings
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Types of Fertilizers
Types of Fertilizers
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Importance of Shade in Nurseries
Importance of Shade in Nurseries
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How Shade Benefits Nurseries
How Shade Benefits Nurseries
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Protection from Extreme Environments
Protection from Extreme Environments
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Hardening-Off
Hardening-Off
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Watering Control in Hardening-Off
Watering Control in Hardening-Off
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Wilting Point
Wilting Point
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Shading in Hardening-Off
Shading in Hardening-Off
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Removing Shade for Hardening-Off
Removing Shade for Hardening-Off
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Root Pruning in Hardening-Off
Root Pruning in Hardening-Off
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Stopping Root Pruning Before Planting
Stopping Root Pruning Before Planting
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Why Hardening-Off is Important
Why Hardening-Off is Important
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Why is vegetation removal essential in nursery preparation?
Why is vegetation removal essential in nursery preparation?
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What is important to consider when removing trees during nursery preparation?
What is important to consider when removing trees during nursery preparation?
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Why is topsoil removal necessary in nursery preparation?
Why is topsoil removal necessary in nursery preparation?
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When is topsoil removal not necessary in nursery preparation?
When is topsoil removal not necessary in nursery preparation?
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What measures are essential for erosion control and wind damage prevention in a nursery?
What measures are essential for erosion control and wind damage prevention in a nursery?
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How can hedges contribute to a nursery's success?
How can hedges contribute to a nursery's success?
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What is important to consider when choosing windbreak species?
What is important to consider when choosing windbreak species?
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What is crucial for preparing the nursery soil?
What is crucial for preparing the nursery soil?
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Study Notes
Course Information
- Course Title/Code: Forest Seeds and Nursery Technology (Frst3091)
- Course Credit: 3 Credit Hours and 5 ECTS
- Instructor: Yadesa A.
- Year: 2024
Contents
- Nursery Establishment and Management
- Seedling Production Techniques
- Nursery Diseases, Pest Control
- Record Keeping in the Nursery
- Nursery Cost and Financial Plan
Nursery Establishment and Management
- A tree nursery is a managed site for producing tree seedlings under favorable conditions until ready for planting.
- Nurseries can range from informal, small-scale arrangements to large, commercial enterprises.
- Nurseries vary in size, facilities, seedling types, quality, and quantity of planting stocks produced.
Types of Tree Nurseries
- Temporary/Flying Nurseries: Short-term, used for small reforestation and planting in remote areas.
- Permanent Nurseries: Long-term, high production and survival rates, have more facilities.
- Benefits of Small-Scale Nurseries: Shorter transit time, lower transport costs, lower capital investment, and easier disease isolation.
Permanent Nurseries
- Permanent nurseries supply nursery stock for a long period and maintain seedlings until they can be raised at a reasonable cost.
- Key advantages include high production levels, reliable seedling survival rates, lower per-plant costs, and availability of permanent facilities and modern equipment.
Major Nursery Types
- Institutional Nurseries (research, government, industrial)
- Research nurseries: established and maintained by research units, usually permanent facilities operating for 5-10 years. Equipped for sophisticated tests and analysis.
- Government Nurseries: Established by national and local government agencies
- Industrial Nurseries: Established by large integrated wood industries, high production, and strict quality control
- Project Nurseries: Established by projects, NGOs, and development organizations, usually 3-5 years but potentially longer
- Individual Nurseries: Household nurseries or backyard nurseries, managed by individual farmers, vary widely in size.
Nursery Site Selection
- Factors influencing site selection: type of nursery, environmental factors, socio-economic factors.
- Important Environmental/Ecological Factors:
- Water Source Reliability (continuous, adequate supply, especially during the dry season). Storage capacity is crucial. Water quality (pH 5.5-7).
- Location (near planting/demand centers to reduce transportation)
- Topography (gentle slope for drainage, avoid valleys and excessive wind). Drainage systems are necessary.
- Soil (texture, adequate depth, absence of stones). Soil pH (5-6).
- Previous land use (examine soil acidity and toxic chemicals)
- Important Socio-economic Factors: Proximity to: •Seedling customers •Labor force (workers) •Transportation •Essential services and utilities(power, Phone) Land cost: price range, stipulations
- Site production potential: Estimate seedling needs. A rule of thumb is about 500,000 seedlings per 0.4 hectares (1 acre), but figures vary with species and density. Subtract non-productive areas.
Nursery Layout
- The permanent nursery should accommodate administrative, operational, and production areas.
- Principles should be adjustable for small-scale nurseries.
- Avoid waste ground for weeds. Plan for expansion.
- Important components include: —Administration area (office, storage) —Operations area (extracting/drying/processing seed, potting/germination, compost production) —Production areas (for growing bare-root plants/container seedlings)
- Normal bed width = 1.0 - 1.2 meters
- Bed length ≤ 20 meters
- Soil should be free of stones
- Consider: shade/watering needs, location of walkways, appropriate materials
Seedling Production Techniques
- Bed preparation varies by location, climate, soil, tree type, and equipment
- Three types of seedbeds: flat, raised, sunken
- Raised beds are better for clayey soils under high rainfall.
Nursery Management
- Watering: plants need clean water, seedlings require more during the dry season. Avoid dirty or salty water. Proper watering will have a direct effect on plant growth, reduce disease incidence and improve resilience.
- Transplanting: technique of moving seedlings. Proper timing is crucial to promote success. Includes acclimatization and minimizing root disturbance.
- Fertilization: nutrients to aid plant growth, use organics first for soil improvement
- Weeding: remove weeds to reduce competition for water and nutrients.
- Root Pruning: trim roots to create more fibrous roots.
- Hardening-off: transition seedlings to outdoor conditions. Gradually reduce watering and shade.
- Nursery Hygiene: practices to keep the nursery clean and reduce disease spread (sanitation practices)
- Shade and watering management needed for seedling support in the nursery as seedlings require different levels of shade during various growth stages.
Nursery Diseases and Pest Control (including IPM)
- Damping off (fungal disease) is common. Prevention includes good drainage, airflow, and reduced watering when needed.
- IPM (Integrated Pest Management): strategy involving multiple control methods to tackle nursery threats. The approach addresses pests and diseases by examining the host-pest-environment relationship. This approach avoids reliance on any one specific technique to control pests as other factors might limit their use
Record Keeping in the Nursery
- Maintain records to verify clean inputs, worker compliance, production process traceability.
- Logs should include: collectors, species, collection locations/sources, propagule types, conditions, storage conditions, treatments, batches, individual plants, test results, and procedures. Data should be clearly documented and include dates, times, and worker initials. Nursery workers must be well-trained on the record-keeping systems.
Nursery Cost and Financial Plan
- Nursery programs must break even (self-sufficient).
- Revenues should cover all costs. Use a 3-year financial plan.
- Important considerations include financial management, projections on cost/profit, funding strategies
Tools and Equipment
- Nursery establishment requires various tools and equipment, including hoes, spades, watering cans, hose, wheelbarrow, polythene tubes, shading material, pegs, etc. The tools and equipment should be procured upfront to support nursery operations.
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