Abstract
Evaluation of Flue-Gas Desulfurization gypsum in Poultry Litter as a Substrate Component for Greenhouse Horticultural Crops
Highlights
A study was conducted to evaluate the growth response and consumer preference of three plant species to substrate blends containing flue gas desulfurization gypsum (FGDG)
Five poultry litter (PL) treatments (PL; used bedding + broiler manure) chosen from the broiler study were mixed at a 50:50 ratio with crushed pine bark (CPB) giving rise to the following treatments: 100% Pine shavings (PS) + CPB(50:50v/v); 50% FGDG + 50% PS + CPB (25:25:50v/v/v); 100% FGDG + CPB (50:50v/v), 100% Pine bark (PB) + CPB (50:50v/v); and 50% FGDG + 50% PB+CPB (25:25:50v/v/v)
Each of these PL treatments were mixed with crushed pine bark (CPB) at a 50:50 ratio and compared to a control composed of CPB (3/8” sieve) + Fafard 3B (50:50)
Summary
A study was conducted to evaluate the growth response and consumer preference of three plant species to substrate blends containing flue gas desulfurization gypsum (FGDG). Five litter treatments chosen from the broiler study were mixed at a 50:50 ratio with crushed pine bark (CPB) giving rise to the following treatments: Pine shavings (PS)+CPB (50:50 v/v); FGDG + PS + CPB(25:25:50 v/v/v); FGDG +CPB(50:50 v/v), Pine bark (PB)+ CPB (50:50 v/v); and FGDG + PB + CPB (25:25:50v/v/v). These treatments were compared to CPB + Farfard 3B (50:50 v/v) as the control (industry stand and).The five broiler litter based substrates (treatments) contained poultry manure while the control did not. This 1: 1 FGDG: CPB substrate had a lower, more desirable pH level, a higher calcium level, and less phosphorus leached from the substrate after watering suggesting the possibility of calcium binding excess phosphorus in the leachate water
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