Water type and irrigation time effects on microbial metabolism of a soil cultivated with Bermuda-grass Tifton 85
AUTOR(ES)
Nogueira, Sandra Furlan, Paula, Alessandra Monteiro de, Pereira, Bruno Fernando Faria, Salemi, Luiz Felippe, Fonseca, Adriel Ferreira da, Montes, Célia Regina, Victoria, Reynaldo Luiz
FONTE
Brazilian Archives of Biology and Technology
DATA DE PUBLICAÇÃO
2011-06
RESUMO
This study investigated the microbial metabolism in Bermuda-grass Tifton 85 areas after potable-water and effluent irrigation treatments. The experiment was carried out in Lins/SP with samples taken in the rainy and dry seasons (2006) after one year and three years of irrigation management, and set up on an entirely randomized block design with four treatments: C (control, without irrigation or fertilization), PW (potable water + 520 kg of N ha-1 year-1); TE3 and TE0 (treated effluent + 520 kg of N ha-1 year-1) for three years and one year, respectively. The parameters determined were: microbial biomass carbon, microbial activity, and metabolic quotient. Irrigation with wastewater after three years indicated no alteration in soil quality for C and ET3; for PW, a negative impact on soil quality (microbial biomass decrease) suggested that water-potable irrigation in Lins is not an adequate option. Microbial activity alterations observed in TE0 characterize a priming effect.
Documentos Relacionados
- Efeitos da irrigação com esgoto tratado e fertilização nitrogenada na ciclagem de carbono e nitrogênio e no metabolismo microbiano de um solo cultivado com capim-Bermuda Tifton 85
- Microbiological profile and aerobic stability of Tifton 85 bermudagrass silage with different additives
- Tifton 85 bermudagrass (Cynodon sp.) silage as a replacement for Tifton 85 hay to feed lactating cows
- Effects of sprinkler irrigation with treated sewage effluent, rich in sodium, on the chemical and physical properties of a typic hapludults cultivated with Tifton 85 grass.
- Fertirrigation with cattle wastewater in Tifton 85 grass and black oat: effects on soil and plants