Unit 4175: Comprehensive Horticulture Practices

1. Plant Propagation Techniques

1.1 Introduction to Plant Propagation

• Importance of propagation in horticulture
• Sexual vs. asexual propagation

1.2 Advanced Asexual Propagation Methods

• Grafting: types, steps, and applications
• Air layering: techniques and benefits
• Division: methods and suitable plants

1.3 Tissue Culture

• Principles of plant tissue culture
• Micropropagation techniques
• Advantages and limitations

2. Integrated Pest Management (IPM) in Horticulture

2.1 Principles of IPM

• Pest identification and monitoring
• Economic injury levels and thresholds

2.2 Biological Controls

• Use of natural predators and parasites
• Beneficial microorganisms

2.3 Cultural Practices

• Crop rotation and sanitation
• Resistant varieties and planting time adjustments

2.4 Chemical Controls

• Judicious use of pesticides
• Safe application methods and regulations

3. Greenhouse Management and Technology

3.1 Environmental Control Systems

• Temperature, humidity, and light regulation
• Ventilation and shading systems

3.2 Irrigation Techniques

• Drip irrigation and misting systems
• Water management and conservation

3.3 Specialized Technology

• Automated control systems
• Sensors and monitoring tools
• Use of artificial lighting

4. Soil Nutrient Management

4.1 Soil Testing and Analysis

• Sampling methods
• Interpretation of soil test results

4.2 Nutrient Deficiencies and Toxicities

• Common symptoms in plants
• Causes and remedies

4.3 Fertilizers and Soil Amendments

• Types of fertilizers (organic and inorganic)
• Application methods and timing
• Soil pH adjustment and improvement techniques

5. Sustainable Practices in Horticulture

5.1 Organic Gardening

• Principles and certification
• Organic pest and nutrient management

5.2 Permaculture Principles

• Designing self-sustaining ecosystems
• Crop diversification and companion planting

5.3 Water Conservation

• Efficient irrigation methods
• Rainwater harvesting

5.4 Crop Rotation and Soil Health

• Benefits and planning
• Pest and disease management through rotation

6. Plant Biotechnology in Horticulture

6.1 Genetic Engineering

• Concepts and methods
• Examples of genetically modified horticultural crops

6.2 Molecular Breeding

• Marker-assisted selection
• DNA fingerprinting and mapping

6.3 Applications and Ethical Considerations

• Developing disease-resistant and high-yield varieties
• Biosafety and regulatory issues

7. Post-Harvest Handling and Storage

7.1 Post-Harvest Physiology

• Ripening, respiration, and transpiration

7.2 Handling Techniques

• Harvest timing and methods
• Cleaning, sorting, and grading

7.3 Storage Methods

• Temperature and humidity control
• Controlled atmosphere storage
• Packaging and transportation

8. Urban Horticulture and Vertical Farming

8.1 Urban Horticulture Challenges

• Space constraints
• Pollution and environmental stresses

8.2 Rooftop Gardening

• Design and implementation
• Plant selection and maintenance

8.3 Vertical Farming

• Systems and structures
• Hydroponics and aeroponics

8.4 Hydroponic Systems

• Nutrient solutions and media
• Advantages and challenges