Data/hora: 01/06/2024 04:48:50

Biblioteca(s): | Embrapa Pantanal; Embrapa Semiárido.
Data corrente: | 10/11/1998
Data da última atualização: | 03/07/2017
Autoria: | WERNER, M. R.
Título: | Soil quality characteristics during conversion to organic orchard management.
Ano de publicação: | 1997
Fonte/Imprenta: | Applied Soil Ecology, v. 5, p. 151-167, 1997.
Idioma: | Inglês
Conteúdo: | Soil quality measurements were made as part of a larger study of conversion to certified organic management in a California apple orchard and results are reported here. The general objectives of the soil research were: (1) to compare soil properties between the two production systems (conventional and transitional organic); (2) relate observed differences to soil processes and management practices; and (3) determine the relative usefulness of each of the measured parameters as soil quality indicators. Bulk density and water holding capacity were useful indicators of changes in soil physical characteristics. Because treatment differences in bulk density were detected, biological and chemical data were expressed volumetrically to more closely approximate in-field values. EC, Ca and Mg readings were used as an indication of the absence of significant salinity problems in both production system. Soil pH in surface soils was midly acidic and values were slighty higher in the organic production system plots. Potentially mineralizable nitrogen and biomass carbon (C) were more sensitive indicators of system change than total N or organic C. Because microbial respiration was higher from organic plots on some sample dates, C loss via Co2 was evaluated against C inputs in the two systems.
Palavras-Chave: | Indicador; Manejo orgânico; Organic soil; Quality.
Thesagro: | Fósforo; Micorriza; Nitrogênio; Qualidade; Solo; Solo Orgânico.
Thesaurus Nal: | nitrogen; Soil.

Categoria do assunto:

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P Recursos Naturais, Ciências Ambientais e da Terra

Registro original: | Embrapa Semiárido (CPATSA)

Exemplares:

CPATSA - (27213-1) - ADC - SP - PP - 01268 -  - 01268 - DIS
CPAP - (36382-1) - ADD - SP - PP - SP15753 -  - 15753 - DIS