|
|||||
|
|
Could trunk diameter sensors be used in woody crops for irrigation scheduling? A review of current knowledge and future perspectives |
|
| Authors: | MF Ortuño F Moreno DS Intrigliolo CD Mellisho R Domingo MC Ruiz-Sánchez J Casadesus A Torrecillas |
| Institution: | a Dpto. Riego, Centro de Edafología y Biología Aplicada del Segura (CSIC), P.O. Box 164, E-30100 Espinardo (Murcia), Spain b Dpto. Protección del Sistema Suelo-Planta-Agua, Instituto de Recursos Naturales y Agrobiología (CSIC), P.O. Box 1052, E-41080 Sevilla, Spain c Dpto. Ciencias Agroforestales, EUITA, Universidad de Sevilla, Crta de Utrera Km 1, 41013 Sevilla, Spain d Centro Desarrollo Agricultura Sostenible, Instituto Valenciano de Investigaciones Agrarias (IVIA), Apartado Oficial, E-46113 Moncada (Valencia), Spain e Institut de Recerca i Tecnologia Agroalimentàries (IRTA-Torre Marimon), E-08140 Caldes de Montbui (Barcelona), Spain f Dpto. Producción Vegetal, ETSIA, Universidad Politécnica de Cartagena (UPCT), Paseo Alfonso XIII 48, E-30203 Cartagena (Murcia), Spain g Unidad Asociada al CSIC de Horticultura Sostenible en Zonas Áridas (UPCT-CEBAS), Paseo Alfonso XIII 48, E-30203 Cartagena (Murcia), Spain h Institut de Recerca i Tecnologia Agroalimentàries (IRTA-Lleida), Avda. Rovira Roure 191, E-25198 Lleida, Spain i Fundació Mas Badia-IRTA, E- 17134 Tallada d’Empordà (Girona), Spain |
| Abstract: | The use of trunk diameter fluctuations and their derived parameters for irrigation scheduling in woody crops is reviewed. The strengths and weaknesses of these continuously measured plant-based water stress indicators compared with other discretely measured indicators for diagnosing plant water status in young and mature trees are discussed. Aspects such as sensor reading variability, signal intensity and the relationship between trunk diameter fluctuations and plant water status are analyzed in order to assess their usefulness as water stress indicators. The physiological significance of maximum and minimum daily trunk diameter and maximum daily trunk shrinkage (MDS) are also considered. Current knowledge of irrigation protocols and baselines for obtaining maximum daily trunk shrinkage reference values is discussed and new research objectives are proposed. We analyze the response of woody crops to continuous deficit irrigation scheduled by maintaining MDS signal intensity at threshold values to generate mild, moderate and severe water stress and assess the possibility of using linear variable displacement transducer (LVDT) sensors in trunk as a precision tool for regulated deficit irrigation scheduling. Finally, the possibility of using MDS signal intensity as a tool to match the irrigation regime to tree water requirements is also reviewed. |
| Keywords: | Deficit irrigation Maximum daily trunk shrinkage Irrigation requirements Plant water relations Sensors Stem water potential Trunk growth rate |
| 本文献已被 ScienceDirect 等数据库收录！ | |