Hydroponics - Indoor HorticultureHydroponics - Indoor Horticulture represents an educational, in-depth, up-to-date, indoor horticultural growers guide that covers all principles of indoor hydroponic horticulture and gardening. This book contains 110,000 words, with over 300 diagrams, pictures, illustrations, graphs, tables, 3 dimensional CAD renderings, and is printed in full colour. Hydroponics - Indoor Horticulture examines, explores, dissects and
presents a fully comprehensive step by step growers guide, relating
to all and every aspect of indoor hydroponic horticulture, with complete
chapters on plant biology, propagation, hydroponic systems, nutrients,
oxygen, carbon dioxide enrichment, pH, biological pest control, fungi/disease,
cuttings/clones, pruning/training, breeding, harvesting, equipment,
grow rooms, a full history of hydroponics, and more. |
(Below follows a one page
sample taken from the book) Chapter 10 Fungi |
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To understand fungi and fungi problems associated with plants, you firstly have to understand what fungi are. Fungi are in fact very rudimentary forms of plants, however, they do not have to produce chlorophyll to survive. Fungi survive by reproducing through the spreading of tiny microscopic spores rather than seeds. Millions of these spores are typically present in the atmosphere at all times. In an affected grow room, this number is concentrated 100-1000 fold, creating a heavy soup of fungi spores awaiting to reproduce and procreate using your plants as their host. So when these microscopic airborne spores find suitable conditions, they simply settle on your plants, take hold and start to grow. Some fungi and as an example botrytis, are such prolific breeders that they can spread through an entire crop in a matter of days, so be warned, this stuff is treacherous. BotrytisBotrytis also otherwise known as bud rot or grey mould, is encouraged to grow in a grow room which is not properly ventilated. This means being properly ventilated at night as well as in the daytime. If your temperature and humidity are all pukka during the day cycle you should also make sure that the temperature and as importantly, the humidity during the night time is also controlled and ticker-dee- boo. One grower for the life of him could not work out why he was getting bud rot when during the day cycle the conditions were near on perfect. The night time temperature was also not bad however, he failed to recognise that as the fans were switched off at night, |
the temperature was keeping within the parameters, however, the humidity
was not, so each night the humidity was rising to 98% and the walls
were literally dripping with moisture. During the day this would even
out and to all intents and purposes, looked good and well, but repeated
heavy night time humidity soon took its toll on these plants. During
the latter stages of flowering, botrytis took hold and then, and only
then, realising his mistake, he cut out the infected flowers and increased
extraction in the grow room during the night period. However, the damage
was already done and this grower was forced to take down his crop one
or two weeks prematurely resulting in a definitive lack of yield. Still,
he did try and persevere, but with any fungi outbreak, you are fighting
a losing battle and it becomes a matter of time versus damage, so you
need to know when to draw the line to minimise casualties, but maximise
yield. |
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