Results of this study clearly showed that date palm waste has a great potential to be used as the culture media for plant growth in hydroponic systems.
Mohammadi (2013) reported that date palm wastes have a good potential to be used as culture media for plant growth under hydroponic systems.
Growth media (GM) for plants grown in plates was prepared as previously described [ 55].
Anaerobically digested dairy fiber (ADDF), a by-product of methane extraction from dairy manure, has shown potential as a partial peat substitute in potting media for bedding plants (MacConnell and Collins 2007; Lamont 2015).
EDTA salts (Hoagland solution) and citric acid (BG11 medium) are two of the main organic compounds in media for culturing plants and algae, respectively.
These media can contain simply distilled water [158, 159], but also agar with and without supplementation of mineral nutrients [127] or even complete media used for plant tissue cultures, such as Murashige-Skoog medium [128, 154], supplemented with minerals, amino acids, vitamins and hormones as bioactive compounds [161].
Sucrose is also the main carbon source in media used for plant tissue culture.
The media used for plant induction, multiplication and growth of the plants was Murashige and Skoog [ 78], at pH 5.7, with some modifications as reported by Robert et al. [ 16, 55].
Although studies have tested aerobically composted manure as a peat substitute in media for growing foliage plants (Li et al. 2009), nursery plants (Shober et al. 2011), and bedding plants (Shober et al. 2010), little work has been done using anaerobically digested dairy fiber as a media component.
Proper nutrient growth media for microorganisms and plants or diets for animals, therefore, require not only that the essential mineral elements be provided in sufficient amounts but also that they be used in the proper ratios to each other.
