Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/92864
Type: Artigo de periódico
Title: Methodology For Soil Salinity Evaluation In Greenhouse [metodologia Para Avaliação Da Salinidade Do Solo Em Ambiente Protegido]
Author: de Queiroz S.O.P.
Testezlaf R.
Matsura E.E.
Abstract: Under controlled environmental conditions, irrigation is essential and the use of fertigation becomes a facilitator agent for water and fertilization management. However, the intensive use of fertigation in this type of productive process can increase soil salinity, and affect productive process. This work objective was to evaluate a methodology in order to characterize the salinization process occurrence of in greenhouse farms using different methods to determine soil electric conductivity l. Sigma Probe EC1, manufactured by Delta-T and vacuum solution manufactured extractors were evaluated under laboratory conditions. The equipment was used in three different soil textures, under five salinity levels: 0, 2, 4, 8 and 12 dS. m-1 at 25° C. The obtained results of electric conductivity were compared to the saturation extract method. The Sigma Probe EC1 equipment was used in farm visits, with controlled environmental production in Campinas macro region. Among the used equipment in the laboratorial part, the sigma Probe EC1 presented the best results for soil electrical conductivity determination, when compared to saturation extract, in saline and non saline soils. Using the questionnaire for electric conductivity determinations using Sigma Probe sensor it was possible to verify the deficiency in the soil moisture and electrical conductivity management. The obtained results for electric conductivity using the saturation extract methods do not characterize saline soils on the visited farms, but they showed that the salinity levels in the soil could affect flower production and other crops sensitive to salinity.
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Rights: aberto
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-73649124923&partnerID=40&md5=6f84085626dbe6eeee95161f16765d50
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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