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After the 2015 purchase, a Hawthorne executive told the press, "the lion's share of General Hydroponics business in North America is cannabis growers". [4] Scotts' CEO decided to spin off a cannabis business after a 2013 visit to a garden store in Yakima, Washington with a large section of hydroponic equipment. [5]
Passive sub-irrigation, also known as passive hydroponics, semi-hydroponics, or hydroculture, [51] is a method wherein plants are grown in an inert porous medium that moves water and fertilizer to the roots by capillary action from a separate reservoir as necessary, reducing labor and providing a constant supply of water to the roots. In the ...
Flora Iberica: Plantas vasculares de la Península Ibérica e Islas Baleares ("Vascular plants of the Iberian Peninsula and Balearic Islands") is a Spanish book series containing identification keys, descriptions, and illustrations of pteridophytes, gymnosperms, and angiosperms of Spain and Portugal (excluding Atlantic islands). [1]
The Jepson Manual also follows Philip A. Munz and David D. Keck in their A California Flora and Supplement of 1958 and 1968. [2] Like other florae, The Jepson Manual builds upon these prior publications. Except for the number of line drawings, it has more in common with Munz's 1968 book than with Jepson's 1923 book.
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]
Plants placed into nutrient-rich water channels in an NFT system A home-built NFT hydroponic system. Nutrient film technique (NFT) is a hydroponic technique where in a very shallow stream of water containing all the dissolved nutrients required for plant growth is re-circulated past the bare roots of plants in a watertight gully, also known as channels.
It is expected to fill 30 volumes when completed and will be the first work to treat all of the known flora north of Mexico; [1] in 2015 it was expected that the series would conclude in 2017. [2] Twenty-nine of the volumes have been published as of 2022. [3] Soon after publication, the contents are made available online. [4] [5] [1]
Aeroponics is the process of cultivating plants in an air or mist environment, eliminating the need for soil or an aggregate medium. The term "aeroponic" originates from the ancient Greek: aer (air) and ponos (labor, hardship, or toil).