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References: Growing Media and Crop Management

  1. Rockwool - Wikipedia - Covers mineral wool growing substrate made from spun basalt rock, including its water retention properties, air porosity, pH neutrality, and use in commercial hydroponic propagation and production.

  2. Perlite - Wikipedia - Explains the volcanic glass expansion process that creates perlite's lightweight porous structure, its high air-filled porosity, low water retention, and use in hydroponic media blends.

  3. Coconut coir - Wikipedia - Describes coir fiber from coconut husks as a sustainable growing medium with high water-holding capacity, natural antifungal properties, and compatibility with DWC, drip, and NFT systems.

  4. Hydroponic Food Production (7th ed.) - Howard M. Resh - CRC Press - Comprehensive growing-media comparison covering physical properties (air porosity, water retention, bulk density), sterilization protocols, and crop-specific media recommendations for lettuce, tomatoes, and herbs.

  5. Hydroponics: A Practical Guide for the Soilless Grower - J. Benton Jones Jr. - CRC Press - Practical crop-management chapters cover transplanting schedules, plant spacing, succession planting strategy, and post-harvest handling for maximum shelf life across common hydroponic crops.

  6. USDA: Specialty Crops Research - USDA AMS - Research and grant resources supporting specialty crop production including lettuce, basil, tomatoes, and strawberries grown in controlled-environment hydroponic systems.

  7. USDA: Organic Certification for Hydroponics - USDA NOP - FAQ on organic certification eligibility for hydroponic operations, media requirements, and nutrient source restrictions relevant to growers seeking USDA organic designation.

  8. EPA: Composting and Organic Matter - EPA - Background on organic growing media sustainability, including coir's environmental profile compared to peat moss and synthetic media in terms of carbon footprint and biodegradability.

  9. Khan Academy: Plant Growth and Development - Khan Academy - Covers plant hormones controlling germination, vegetative growth, flowering, and fruiting — the biology underlying crop management decisions about seeding, transplanting, and harvest timing.

  10. MIT OCW: Biological Engineering - MIT OpenCourseWare - Biological foundations of plant growth including photosynthesis efficiency, nutrient partitioning, and the cell biology of fruit development relevant to managing hydroponic tomatoes, cucumbers, and strawberries.