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Hydroponic Lettuce Production Paperback – February 1, 1999
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Hydroponic Lettuce Production provides 112 pages of practical and scientific information for growers of hydroponic lettuce. Considered an essential handbook for the 21st century, this book covers everything from the background physiology of the lettuce plant to the details of growing systems and management. -- Greenhouse Product News
About the Author
Dr Lynette Morgan holds a PhD from Massey University's Plant Science Department in New Zealand. Her thesis examined many aspects of hydroponic greenhouse vegetable production, including new production systems, nutrition, plant physiology, and the effects of nutrient solutions, environmental conditions and cultivars on fruit growth and flavor.
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For the amateur grower it probably has more than enough information but for the professional it is sadly lacking.
I was looking for a text that I could use to prepare a budget for commercial operation and I found no useful information for this purpose that I had not already found on the internet for free.
For example lettuce is commonly sold commercially in Australia in two whole forms: sleeved and by the crate. Sleeved lettuce often weighs between 150 to 250g per head depending on the customers specification while crated lettuce generally has lettuce weighing >500g/head. There is no discussion of this at all. Knowing the difference in the time to harvest for sleeved versus boxed lettuce is kind of important for planning a commercial operation. As would be the information to asses the difference in production costs for a 150g sleeved head versus a 250g head. As is the differences is plant density between the plants grown to different weights.
Systems of growing that offer greater greenhouse space efficiencies than standard NFT like moving gully systems, moving bench systems and floating raft systems are mentioned but no details given with which to asses the merits of each.