Data/hora: 04/06/2024 15:43:28

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	20/07/2015	
Data da última atualização: 	11/09/2017	
Autoria: 	SANTOS. C. A. dos; KRAWULSKI, C. C.; BINI, D.; GOULART FILHO, T.; KNOB, A.; MEDINA, C. C.; ANDRADE FILHO, G.; NOGUEIRA, M. A.	
Afiliação: 	CRISTIANE ALCANTARA DOS SANTOS; CRISTINA CÉLIA KRAWULSKI, EMATER Londrina; DANIEL BINI, UNICENTRO; TADEU GOULART FILHO, UEL; ADRIANA KNOB; CRISTIANE CONTI MEDINA, UEL; GALDINO ANDRADE FILHO, UEL; MARCO ANTONIO NOGUEIRA, CNPSO.	
Título: 	Reclamation status of a degraded pasture based on soil health indicators.	
Ano de publicação: 	2015	
Fonte/Imprenta: 	Scientia Agrícola, Piracicaba, v. 72, n. 3, p. 195-202, May/Jun. 2015.	
ISSN: 	0103-9016	
DOI: 	10.1590/0103-9016-2013-0274	
Idioma: 	Português	
Conteúdo: 	Pasture degradation is a concern, especially in susceptible sandy soils for which strategies to recover them must be developed. Microbiological and biochemical soil health indicators are useful in the guindace of soil management practices and sustainable soil use. We assessed the success of three Panicum maximum Jacq. cultivars in the reclamation of a pasture in a sandy Typic Acrudox in the northwest of the state of Paraná, Brazil, based on soil health indicators. On a formerly degraded pasture with Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster, a trial with three P. maximum (cv. Massai, Tanzânia, or Mombaça) was conducted. Lime and phosphate were applied at set-up, and mineral N and K as topdressing. A remnant of degraded pasture adjacent to the trial was used as control. Twenty-three chemical, physical, microbiological and biochemical attributes were assessed for the 0-10 cm topsoil. The procedures for reclamation improved most of the indicators of soil health in relation to the degraded pasture, such as soil P, mineral N, microbial biomass C, ammonification rate, dehydrogenase activity and acid phosphatase. CO2 evolution decreased, whereas microbial biomass C increased in the pasture under reclamation, resulting in a lower metabolic quotient (qCO2) that points to a decrease in metabolic stress of the microbial community. The reclamation of the pasture with P. maximum, especially cv. Mombaça, were evidenced by improvements in the microbiological and biochemical soil health indicators, showing a recovery of processes related to C, N and P cycling in the soil.	
Thesagro: 	Fertilidade do solo; Física do solo; Química do solo.	
Thesaurus Nal: 	Soil chemical properties; Soil fertility; Soil physical properties.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/126722/1/nogueira-reclamation-status....pdf	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (36111-1) - UPC - AP - PP -  -  -  - DIS