Agregação de ume nitossolo vermelho distroférrico sob sistemas de plantio direto, preparo convencional e mata nativa


Autoria(s): de Assis, Renato L.; Lanças, Kleber Pereira
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/01/2010

Resumo

This study aimed to evaluate the effect of time since the adoption of the no-till system, in comparison with a native forest area and a conventional tillage area, using the distribution of soil aggregates in a Distroferric Red Nitosol. Treatments were as follows: native forest (NF), conventional tillage (CT), no-till for one year (NT1), no-till for four years (NT4), no-till for five years (NT5), and no-till for 12 years (NT12). Aggregate samples were collected randomly within each treatment at depths of 0-5 and 10-15 cm. After sifting the aggregates in water they were separated into the following aggregate classes > 2 mm; < 2 mm; 2-1 mm, and < 1 mm. The adoption time in the no-till system favored soil aggregation. The mean weighted diameter (MWD) of the soil aggregates and the percentage of aggregates greater than 2 mm increased with adoption time in the no-till system at the 0-5 cm depth. The NF and NT12 treatments had higher MWD values in the 0-5 cm layer. CT had the highest percentage of aggregates smaller than 1 mm.

Formato

58-66

Identificador

http://dx.doi.org/10.1590/S0100-69162010000100006

Engenharia Agricola. Jaboticabal: Soc Brasil Engenharia Agricola, v. 30, n. 1, p. 58-66, 2010.

1809-4430

http://hdl.handle.net/11449/5106

WOS:000277832200006

Idioma(s)

por

Publicador

Soc Brasil Engenharia Agricola

Relação

Engenharia Agrícola

Direitos

openAccess

Palavras-Chave #adoption time #management systems #geometric mean diameter
Tipo

info:eu-repo/semantics/article