130 likes | 459 Views
Hydroponics. Introduction to Agriculture. Original Power Point Created by Mike White Modified by Georgia Agricultural Education Curriculum Office June 2002. Terms. Hydroponics: growing of plants in a solutions of nutrients, without soil Substrate: substance in which plant takes root.
E N D
Hydroponics Introduction to Agriculture Original Power Point Created by Mike White Modified by Georgia Agricultural Education Curriculum Office June 2002
Terms • Hydroponics: • growing of plants in a solutions of nutrients, without soil • Substrate: • substance in which plant takes root
General Facts • Any plant can be grown in hydroponics. • Almost any system can achieve acceptable growth. • Small scale hydroponics is different to large scale.
General Facts • Hydroponics contributes to understanding plant growth. • Very few commercial producers. • Mainly experimental.
Hydroponic Requirements • Best possible light • 50% or more humidity • Day temp = 75 deg. • Night temp = 65 deg.
Other Requirements • All essential elements needed • The larger the particle size of substrate the more watering needed.
Commercial Production • Minimum of 100,000 sq ft • Thousands of plants needed • Will be able to tell conditions of water by looking at the plants
Advantages of Hydroponics • Reduced land cost • More control over growing environment • Reduced pesticide use • Year-round supply • Alternative to urban sprawl
Disadvantages of Hydroponics • Start-up costs • Management • Labor requirements