hydroponics
n.
process of growing plants in a nutrient rich solution in place of soil
Hydroponics
Hydroponics is a method of growing
plants using mineral
nutrient solutions instead of
soil. Terrestrial plants may be grown with their
roots in the mineral nutrient solution only or in an inert medium, such as
perlite,
gravel or
Rockwool. A variety of techniques exist.
Plant physiology researchers discovered in the
19th century that plants absorb essential mineral nutrients as inorganic
ions in
water. In natural conditions, soil acts as a mineral nutrient reservoir but the soil itself is not essential to plant growth. When the mineral nutrients in the soil dissolve in water, plant roots are able to absorb them. When the required mineral nutrients are introduced into a plant's water supply artificially, soil is no longer required for the plant to thrive. Almost any terrestrial plant will grow with hydroponics, but some will do better than others. It is also very easy to do; the activity is often undertaken by very young children with such plants as
watercress. Hydroponics is also a standard technique in biology research and teaching and a popular hobby.
See more at Wikipedia.org...
Hydroponics
hydroponics
Noun
1. a technique of growing plants (without soil) in water containing dissolved nutrients
(synonym) aquiculture, tank farming
(hypernym) farming, agriculture, husbandry
(hyponym) drip culture
Hydroponics
The growing of plants without soil by using an inert medium such as sand, peat, or vermiculite and adding a nutrient solution containing all the essential elements needed by the plant for its normal growth and development. Water culture, when plant roots are suspended in a liquid medium containing the nutrient solution while their crowns are supported in a thin layer of inert medium, is true hydroponics. Often called soilless culture, it also includes aeroponics where plant roots are suspended in a dark chamber and sprayed with the nutrient solution.
Free Download Now!
