Review. Use of psychrometers in field measurements of plant material: accuracy and handling difficulties

  1. Martínez Pérez, Emma María
  2. Cancela Barrio, Javier José
  3. Cuesta García, Tomás Serafín
  4. Neira Seijo, Xan Xosé
Revista:
Spanish journal of agricultural research

ISSN: 1695-971X 2171-9292

Ano de publicación: 2011

Volume: 9

Número: 1

Páxinas: 313-328

Tipo: Artigo

DOI: 10.5424/SJAR/20110901-295-10 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Outras publicacións en: Spanish journal of agricultural research

Resumo

La determinación del potencial hídrico foliar es muy útil en el establecimiento de directrices de riego en las prácticas de manejo agrícola de los cultivos, requiriéndose del uso de diferentes métodos como los psicrómetros termopar (TCP). Los TCP han sido ampliamente utilizados. Sin embargo, se trata de una técnica compleja de difícil manejo. Por lo tanto, se requiere un profundo conocimiento de los diferentes aspectos involucrados en la técnica, que no han sido claramente explicados en los diferentes estudios publicados. Este artículo revisa una serie de líneas de investigación de los TCP. Estas áreas de investigación se han centrado en tres campos muy específicos: a) principales actuaciones en campo empleando la psicrometría; b) especificación de la precisión de los equipos, per se y frente a otras metodologías alternativas; c) principales errores y dificultades de manejo en campo de los psicrómetros. La investigación en esta área permitirá aportar una visión actualizada sobre los TCP como método de determinación de relaciones hídricas en material vegetal, aportando criterios de selección de acuerdo a la tipología de material vegetal y al propósito de la investigación, destacando la tipología, precisión y errores que comprometen las mediciones en los trabajos realizados.

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