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Daniels P. How to grow Marijuana Hydroponically. USA 1976. c70pp.

Cover and contents page only reviewed. Contents include: Introduction to Hydroponics - what is it, germinating seeds. Growing medium - requirements, gravel, sterilizing, sand, vermiculite, perlite, other materials. The Container - manual/automatic feeding, growing units, plastic pipes/fittings. Lighting - day length, plant lights, fluorescents, incandescents, arrangements of lights & costs. Nutrient solutions, mineral salts, trace elements, water, pH. Feeding plants - irrigation, when to feed. Sowing & Care. Problems - spindly plants, insect control, natural insecticides, predators, fungal attack, preventive measures, chemicals. Harvesting - two weeks in advance, reduce feeding, dry ice. Quick review of main points.

Comment: A step by step guide to hydroponic cultivation. Now very dated.

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