Evaluation of sap flow and trunk diameter sensors for irrigation scheduling in early maturing

被引:56
作者
Conejero, W.
Alarcon, J. J.
Garcia-Orellana, Y.
Nicolas, E.
Torrecillas, A.
机构
[1] Ctr Edafol & Biol Aplicada Segura CSIC, Dpto Riego, E-30100 Murcia, Spain
[2] Unidad Asociada CSIC Horticultura Sostenible Zona, E-30203 Murcia, Spain
[3] Univ Ctr Occident Lisandro Alvarado UCLA, Dpto Ingn Agricola, Barquisimeto, Venezuela
关键词
stein water potential; trunk diameter fluctuations; water relations;
D O I
10.1093/treephys/27.12.1753
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
Five-year-old early maturing peach trees (Prunus persica (L.) Batsch cv. Flordastar grafted on GF-677 peach rootstock) were subjected to three irrigation treatments from March 18 to November 10, 2006. Control plants (TO treatment) which received irrigation in excess of their crop water requirements (1089.7 mm) were compared with plants watered according to sap flow (SF; T1 treatment) or maximum daily trunk shrinkage (MDS; T2 treatment) measurements, so as to maintain SF and MDS signal intensities (control SF/SF in T1 and MDS in T2/control MDS, respectively) close to unity. When SF or MDS signal intensity on at least two of three consecutive days was at or below unity, irrigation was reduced by 10%. When the MDS signal intensity on at least two of three consecutive days exceeded unity, irrigation was increased by 10%. During the experiment, estimated crop evapotranspiration was 704.9 aim, and the cumulative amounts of applied water in the T I and T2 treatments were 463.2 and 654.5 mm, respectively. The MDS-signal-intensity-driven irrigation schedule was more suitable than the SF-signal-intensity-driven irrigation schedule because it was more sensitive and reliable in detecting changes in plant water status, preventing the development of detectable plant water stress. Moreover, it had no effect on fruit size. We conclude that peach tree irrigation scheduling can be based on MDS measurements alone. Changes in the irrigation protocol assayed were proposed to reduce MDS signal intensity deviations above unity, for example, by increasing the irrigation scheduling frequency or the amount of water applied, or both. Irrigation schedules based on maintaining MDS signal intensities close to unity could be applied when local crop factor values are unavailable.
引用
收藏
页码:1753 / 1759
页数:7
相关论文
共 35 条
[21]   BEHAVIOR OF MAIZE STEM DIAMETER DURING DRYING CYCLES - COMPARISON OF 2 METHODS FOR DETECTING WATER-STRESS [J].
KATERJI, N ;
TARDIEU, F ;
BETHENOD, O ;
QUETIN, P .
CROP SCIENCE, 1994, 34 (01) :165-169
[22]  
Li S. H., 1989, Irrigation and Drainage Systems, V3, P1, DOI 10.1007/BF01102813
[23]   Sap flow in peach trees during water stress and recovery in two environmental conditions [J].
Massai, R ;
Remorini, D ;
Ferreira, MI ;
Paço, TA .
PROCEEDINGS OF THE THIRD INTERNATIONAL SYMPOSIUM ON IRRIGATION OF HORTICULTURAL CROPS, VOLS 1 AND 2, 2000, (537) :351-358
[24]  
*MIN AGR PESC AL, 1995, NORM CAL FRUT HORT
[25]   Transpiration and root water uptake by olive trees [J].
Moreno, F ;
Fernandez, JE ;
Clothier, BE ;
Green, SR .
PLANT AND SOIL, 1996, 184 (01) :85-96
[26]  
Naor A., 2006, Horticultural Reviews, V32, P111
[27]   Evaluation of transpiration in adult apricot trees from sap flow measurements [J].
Nicolas, E ;
Torrecillas, A ;
Ortuño, MF ;
Domingo, R ;
Alarcón, JJ .
AGRICULTURAL WATER MANAGEMENT, 2005, 72 (02) :131-145
[28]   Stem and leaf water potentials, gas exchange, sap flow, and trunk diameter fluctuations for detecting water stress in lemon trees [J].
Ortuño, MF ;
García-Orellana, Y ;
Conejero, W ;
Ruiz-Sánchez, MC ;
Alarcón, JJ ;
Torrecillas, A .
TREES-STRUCTURE AND FUNCTION, 2006, 20 (01) :1-8
[29]   Sap flow and trunk diameter fluctuations of young lemon trees under water stress and rewatering [J].
Ortuño, MF ;
Alarcón, JJ ;
Nicolás, E ;
Torrecillas, A .
ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2005, 54 (02) :155-162
[30]   Comparison of continuously recorded plant-based water stress indicators for young lemon trees [J].
Ortuño, MF ;
Alarcón, JJ ;
Nicolás, E ;
Torrecillas, A .
PLANT AND SOIL, 2004, 267 (1-2) :263-270