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Rosenthal E.: Marijuana Growers Handbook (indoor/greenhouse Ed) USA 1984, 1986. 232pp

Disclaimer: "The material in this book is presented as information which should be available to the public. The publisher does not advocate breaking the law. However, we urge readers to support NORML in its efforts to secure the passage of fair marijuana legislation."

The preface charts developments in the situation regarding marijuana cultivation in the USA, and calls for legal reform. There is also a "precaution" where readers are reminded of the marijuana laws, the risks associated with electricity consumption, and the need for secrecy to minimise the risk of detection.

Chapters 1 to 6 give general information on cannabis, describing the plant, characteristics of geographical varieties when choosing seeds (no Dutch hybrids mentioned), growth & flowering, choosing a space (suggest 50 sq. ft, and at least 6' height), although those seeking a smaller garden are referred to a later chapter), preparing the space (reflective walls, insulation, sterilisation, water supply), and plant spacing (advocates growing many small, rather than few large, plants in a confined space).

Chapters 7 to 10 are grouped as "getting started". Chapter 7 describes soil and soil-less mixes, pH, nutrients, use of soil, compost, rockwool, foam, vermiculite, perlite etc., and constituents of organic waste/compost materials. Chapter 8 discusses the advantages of hydroponics over soil gardening, while chapter 9 discusses passive (wick, reservoir) and active (flood, drip) hydroponic systems, aerated water and nutrient film technique (as recommended by Sunlight Systems). There are numerous diagrams, and photographs of rockwool blocks ready for receiving cuttings. Chapter 10 discusses growing in natural soil, outdoors or in greenhouses.

Chapters 11 to 18 are grouped as "limiting factors", these include lighting and lights (natural, incandescent, fluorescent, high-intensity (MH/HPS)) with output and spectral information, accessories and electrical information. Recommends provision of CO2 in indoor systems, a temperature between 60 and 80oF, use of fans and heaters, negative ions and humidity controls. Chapters 15 & 16 deal with water and nutrients (pH 6 to 7), use of organic and inorganic fertilisers, and a troubleshooting chart showing nutrient-related symptoms and causes.

Chapter 17 (novel gardens) suggests solutions for growing plants in cupboards (closets) and other confined spaces, stating that environmental control is particularly important. Plants can be grown on shelves, with horizontally-mounted lights, several suggestions similar in concept to the Kushti Box. Chapter 18 discusses pots and containers.

Chapters 19 to 33 are grouped as "planting", and include when to plant, planting, early growth, watering, pruning, pests, flowering, sinsemilla and sexing, advanced flowering, breeding, harvesting, curing and manicuring, regeneration, cloning and experiments (electrical current in soil, use of birth control pills as hormonal influence on plants, use of strobe lights etc.). There are numerous diagrams, tables and photographs providing information complementary to the text. There is a request for feedback from readers.

There are appendices on lighting, photosynthesis, bibliography and index, with two pages of advertisements for other related publications.

Comment: Although this book is now dated, predating development of Dutch hybrids, it gives the novice adequate information to grow cannabis plants from seed to maturity, outdoors or indoors. The information is presented logically and generally in simple terms, and although some sections are more technical, these are not usually essential to the process. Suggests use of indoor growing chambers with ideas for construction. Use of a controlled environment is encouraged, as with authors of other similar books. No specific constructions similar to the Kushti Box are proposed, although the "novel gardens" chapter includes information of growing in very confined spaces.

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