1.2.1 hydroponic culture

Hydroponics is a method of growing plants without ___.

soil

Hydroponic growing allows for ___ growth and higher yields than traditional soil-based growing systems.

faster

Hydroponics is a type of horticulture and a subset of ___.

hydroculture

The roots may be physically supported by an inert medium such as ___, gravel, or other substrates.

perlite

Roots can cause changes of the rhizosphere ___ and root exudates can affect rhizosphere biology and physiological balance of the nutrient solution by secondary metabolites.

pH

The nutrients used in hydroponic systems can come from many different sources, including ___, duck manure, purchased chemical fertilizers, or artificial nutrient solutions.

fish excrement

Plants commonly grown hydroponically in a greenhouse, on inert media, include tomatoes, peppers, cucumbers, strawberries, lettuces, and cannabis, usually for commercial use, and ___, which serves as a model organism in plant science and genetics.

Arabidopsis