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In hydroponic growing, the nutrient solution is best at 5.2 to 5.8, making Cannabis well-suited to hydroponics because this pH range is hostile to most bacteria and fungi. [ citation needed ] Tissue culture multiplication has become important in producing medically important clones, [ 18 ] while seed production remains the generally preferred ...
Cannabis is fully dry for "curing" when the moisture level reaches 55–65% RH. A simple way to check this is by closing the cannabis up in an airtight glass container with a hygrometer. The container is stored for 12 hours at 22 °C (72 °F) and the hygrometer checked. 65% and above readings mean the jar needs to be opened for a few hours and ...
The Kratky method is a passive hydroponic technique for growing plants suspended above a reservoir of nutrient-rich water. [1] Because it is a non-circulating technique, no additional inputs of water or nutrients are needed after the original application, and no electricity, pumps, or water and oxygen circulation systems are required. [2]
Hydroponics offers many advantages, notably a decrease in water usage in agriculture. To grow 1 kilogram (2.2 lb) of tomatoes using intensive farming methods requires 214 liters (47 imp gal; 57 U.S. gal) of water; [9] using hydroponics, 70 liters (15 imp gal; 18 U.S. gal); and; only 20 liters (4.4 imp gal; 5.3 U.S. gal) using aeroponics.
Tetrahydrocannabinolic acid (THCA, 2-COOH-THC; conjugate base tetrahydrocannabinolate) is a precursor of tetrahydrocannabinol (THC), an active component of cannabis. [1]THCA is found in variable quantities in fresh, undried cannabis, but is progressively decarboxylated to THC with drying, and especially under intense heating such as when cannabis is smoked or cooked into cannabis edibles.
Lettuce, for example, grows best in a pH of 5.6–6.0, EC of 1.1–1.4 dS·m −1, 17 mol·m −2 ·d −1 daily light integral which may consist of a combination of natural and supplemental lighting, air temperature of 24 °C day/19 °C night, water temperature of 25 °C, and dissolved oxygen of >7 mg·L −3.
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Consequently, a high-fat meal increases levels of 11-hydroxy-THC by only 25% and most of the increase in bioavailability is due to increased levels of THC. [ 31 ] The bioavailability of THC when smoking or inhaling is approximately 25%, with a range of 2% to 56% (although most commonly between 10 and 35%).
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