| dc.creator | Jara-Rojas,Francisco | |
| dc.creator | Ortega-Farías,Samuel | |
| dc.creator | Valdés-Gómez,Héctor | |
| dc.creator | Poblete,Carlos | |
| dc.creator | del Pozo,Alejandro | |
| dc.date | 2009-03-01 | |
| dc.date.accessioned | 2019-04-24T21:18:48Z | |
| dc.date.available | 2019-04-24T21:18:48Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000100011 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/55433 | |
| dc.description | The coupled model of assimilation and stomatal conductance (A-g s) was evaluated to estimate leaf stomatal conductance of a drip-irrigated vineyard (Vitis vinifera L. cv. Cabernet Sauvignon) located in the Pencahue Valley (35°22’ S, 71°47’ W, 150 m.a.s.l.), Maule Region, Chile, during the 2003-2004 and the 2004-2005 growing seasons. Additionally, a calibration of the three parameters mesophyll conductance (g m), maximum specific humidity (Dmax) and coupled factor (f0) was applied on vines growing in 35 L pots. An infrared gas analyzer was used to calibrate and evaluate the A-g s which allowed simultaneous measuring of the leaf net CO2 assimilation (A) and stomatal conductance (g s) in 2 to 3 h intervals of time. The calibration indicated that the g m,, Dmax and f0 values were 1.15 mm s-1, 52.31 g kg-1 and 0.90, respectively. The validation in the drip-irrigated vineyard indicated that the A-g s model was able to estimate the leaf stomatal conductance with a root mean square error (RMSE) of 0.05 mol m-2 s-1, model efficiency of 61% and agreement index of 90%. The sensitivity analysis indicated that the A-g s model is affected considerably by the g m, Dmax and f0 parameterization. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392009000100011 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.69 n.1 2009 | |
| dc.subject | A-g s model | |
| dc.subject | photosynthesis | |
| dc.subject | mesophyll conductance | |
| dc.subject | stem water potential | |
| dc.subject | sensitivity analysis | |
| dc.title | Model Validation for Estimating the Leaf Stomatal Conductance in cv. Cabernet Sauvignon Grapevines | |
