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Commercial Hydroponics 3rd Edition Ebook by John Mason


Completely revised and updated, this third edition of Commercial Hydroponics includes advice on growing an additional 16 new plants, including okra, water chestnuts, cherries, citrus gypsophila and lisianthus.

Packed with information on how to grow different types of vegetables, fruit, cut flowers, herbs and other plants, commercial hydroponics has become a standard text for anyone growing plants in a hydroponic system, whether on a domestic or commercial scale.  Emphasis is placed on plants that are commercially viable and ways to manage and improve crop profitability.


This comprehensive guide to the commercial growing of plants in hydroponics includes colour plates and many black-and-white diagrams and photographs.  The language is clear and a concise directory of suppliers is included.





Preface by the Author

Hydroponics has a dedicated following world wide; of both amateur and commercial growers. This book, though titled “Commercial”, is still very much a relevant reference for the amateur.


Over the 20 years since we published the first edition, Hydroponics has become a significant and stable facet of horticulture in many countries. It has been recognised for it’s environmental as well as commercial benefits; and an ever increasing variety of techniques and applications have emerged. Organic hydroponics is even possible today.


Hydroponics offers more than anything else, possibilities for plant culture that did not exist before. In a hydroponic system, many of the manual tasks, and costs involved in soil culture can be eliminated, but there is a trade off. The set up costs are normally higher. Hydroponics can make better use of limited water resources, and can reduce or eliminate the need for chemical pest control in a commercial situation. Hydroponic produce can in fact be less tainted by chemical residues than produce from a traditional farm.


I was asked to write the first edition of this book in 1988 by David Rosenberg, founder of Kangaroo Press. Despite being a relatively new branch of Horticulture, there were already plenty of hydroponic books on the market around the world.  There was one thing that was still scarce in most books: information about different types of plants and how to grow them in hydroponics. A significant part of the original book was devoted to this plant information. With assistance from my staff at Australian Correspondence Schools we surveyed leading hydroponic experts and growers, interviewing them over the phone. We asked them about how to grow 87 different plants in hydroponics and then documented the results.


The earlier editions have made this an exceptionally successful book, particularly being of such a specialist nature. I wish to thank all of those who have purchased and used the first editions, and I trust the second edition will be even more useful to you. 


This book has come together with a great deal of support and assistance from a large number of people over many years, as you will see in the acknowledgements. I wish to  sincerely thank everyone who has assisted me.


John Mason





Chapter 1 : Introduction
History; How plants grow; Classification of hydroponic systems; Overview of the industry; Why practice hydroponics?

Chapter 2 : Site considerations
Climate; Water requirements; Proximity to markets

Chapter 3 :Aalternatives
Media derived from rock or stone; Media derived from synthetic materials; Sterilisation

Chapter 4 : Plant nutrition

Chapter 5 : Nutrient film technique (nft) culture
Disadvantages of nft culture; Nutrition

Chapter 6 : Rockwool culture
Rockwool use for propagation

Chapter 7 : Aggregate culture
Alternatives for delivering nutrient solution

Chapter 8 : Other techniques – selected examples
Sawdust culture; Aeroponics; Raft system

Chapter 9 : Hydroponics equipment
Time clocks; Sumps/storage tanks

Chapter 10 : Greenhouse operation
Environmental controls; Computerised environmental control; Pest and disease control

Chapter 11 : Plant culture in hydroponics
Pruning; Carbon dioxide enrichment; Transplanting; Pests; Forms of applied insect control; Disease control; Water management; Water relationships; Measuring water available to plants in a solid medium

Chapter 12 : Vegetable crops

Chapter 13 : Berry and other fruit crops

Chapter 14 : Flower crops

Chapter 15 : Other crops
Grass; Propagation/nursery production

Chapter 16 : Managing a commercial hydroponic farm
Running a crop trial; Standards; Hydoponics farm layout; Marketing your produce

Chapter 17 : Troubleshooting: a guide to overcoming problems in hydroponics by lynette morgan
Salt buildup and ec problems; Sodium toxicity and accumulation; Algae; Ec and ph; Root pathogens; Fruiting problems in hydroponics



Extract From Book:

HOW TO GROW CUCUMBER HYDROPONICALLY  (Read the book for details like this on over 100 other types of plants)


Growing conditions
Needs day temperatures of 24 – 30 degrees C. Tolerates over 38 degrees C.
Requires high levels of water (i.e. needs frequent irrigations and prefers high humidity).
Semi-shade may be necessary in warm climates or mid summer.


Nutrient requirements
pH should be around 5.5.
In general, a standard nutrient solution with a ratio of approximately 4 nitrogen to 6 potassium to 1 phosphorus will give good results.
Ratios between nutrients should be maintained approximately as follows during all stages of the crop:
• 2 parts K to 1 part ca
• 10 parts K to 1 part Mg
The only variation might be a slight increase in the proportion of potassium during fruit formation and development.  While maintaining the se ratios you should vary the amount of nutrient powder you dissolve in solution at different stages of the crop to achieve EC readings as follows:
Early while the plants are establishing: 2.0 mS/cm.
From when the plants reach about 1 metre tall until 3 to 4 weeks after the first harvest: 2.5 mS/cm
Between 3 and 7 weeks after the first harvest: 2.0 mS/cm
Beyond 7 weeks after the first harvest: 1.7 mS/cm
An EC of 3.0 mS/cm has been found to reduce crop yield.
Keep sodium and chlorine levels as low as possible.
Over 50 ppm sodium can cause problems.
Sulphur is best kept between 30 and 60 mmp.
Nitrogen should be as nitrate and not ammonium.
Iron is needed at higher levels (up to 3 ppm) early in the growing season, but can be reduced as the plants mature.


Suitable systems
Aggregate culture is successful in most media at 10 to 15 cm depth.
Perlite has been successful in commercial production.
NFT systems have also given excellent results but are not as successful as aggregate culture commercially because roots can clog the gullies and impair flow of nutrient solution.
Rockwool has been used commercially in the Netherlands and the UK.


Seed can be started in rockwool or sand and transplanted.
Direct seeding is effective because seeds are so large.
Space plants 15 cm apart.


Special cultural techniques
Pinch out terminal buds to encourage branching and stimulate female flower development. (Note: male and female flower are separate but on the same plant).
Applications of silver nitrate and gibberellic acid will promote male flowers. Ethephon will promote female flowers.
Trellising is required. Be careful tying stems as they can be brittle.


Wind protection may be necessary.
Diseases include powdery mildew and downy mildew, anthracnose, fusarium wilt, scab, alternaria leaf spot, bacterial wilt and several virus diseases.
Pests include cucumber beetle, squash bug, leaf miner, leaf hoppers, aphis and spider mites.


Harvest and post harvest
Once in production, a crop is picked every one to three days.
Quality in terms of colour and seed size deteriorates if fruits are allowed to get too large.
Cool and store between 7 and 10 degrees c on harvest (colder temperatures can damage the fruit).


New mildew resistant strains are easier to grow.
More compact-growing types such as apple cucumbers are more adaptable to hydroponics, though other types have been grown commercially with success.







Thanks to the following people and organisations who supplied information:
• Sid Dyer
• Anton Silove


• Dr Lynette Morgan
• Naomi Christian
• Alison Bundock
• Timothy Stewart
• Andrew McIntyre
• Tosca Zraikat


• Peter Mason, John Mason and Stephen Mason


• John Mason and Leonie Mason
• With contributions from: Dr Lynette Morgan and Andrew McIntyre

• Keith Maxwell, Australian ISOSC representative and hydroponics consultant
• Rick Donnan, Growool Australia, Sydney
• Robert Van Aurich, Aquaponics, Perth, WA
• Joe Romer, R & D Chemicals, Sydney, NSW
• Greg Seymour, Dept of Agriculture, NSW
• Brian Hearne, Simple grow, Sydney, NSW
• Carol and Frank Griesser of Hydrofresh Prodcue, Wedderburn
• Gary Andrews, Growing Systems Australia, Melbourne
• Mike Hartley, CSR Australia
• Ray Wadsworth, Australian Perlite Sydney
• Students and staff of the Australian Horticultural Correspondence School

• Iain Harrison, Senior Tutor with the Australian Horticultural Correspondence School
• Alison Bundock, Tutor with the Australian Horticultural Correspondence School
• Keith Maxwell, hydroponics consultant, Sydney, Australia



ISBN- 978-0-9871022-2-5

Pages- 235

Images- 76



LEARN MORE AND STUDY HYDROPONICS with the authors of this book, visit ACS Distance Education here.

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Commercial Hydroponics 3rd Ed - PDF ebook Commercial Hydroponics 3rd Ed - PDF ebook
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