Effects of a municipal sewage sludge amendment on triasulfuron soil sorption and wheat growth.
The influence of municipal sewage sludge (SL) as a soil amendment on the sorption and activity of the herbicide triasulfuron (TRS, [2-(2-chloroethoxy)-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide]) was studied. Weed control was checked in a greenhouse on a wheat (Triticum turgidum L. subsp. durum) crop. At the highest SL amount allowed by Italian regulation, TRS sorption onto soil increased by 7 times and weed control was unaffected. A vegetative bloom and an early heading phase were noted. To compare inorganic fertilization (N, P, and K) and SL amendment, a greenhouse fertilization experiment was carried out. The SL-amended crop developed larger leaf surfaces, higher biomass, and a forward heading compared to that fertilized with N, P, and K. The SL hormone-like activity was evaluated by measuring auxin- and gibberellin-like activity of sewage sludge.
Pinna
Maria Vittoria
MV
Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-alimentari, Università di Sassari, Sassari, Italy.
Giunta
Francesco
F
Nardi
Serenella
S
Pusino
Alba
A
D000327:Adsorption; D018533:Biomass; D006540:Herbicides / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013453:Sulfonylurea Compounds / Q000737:chemistry*; D014908:Triticum / Q000254:growth & development*; D000096926:Benzenesulfonamides
D006540:Herbicides; D012722:Sewage; D012987:Soil; D013453:Sulfonylurea Compounds; C094039:triasulfuron; D000096926:Benzenesulfonamides