Water use and the development of seasonal crop coefficients for Superior Seedless grapevines trained to an open-gable trellis system

Autor: Moshe Shenker, Yishai Netzer, Amnon Schwartz, Ben-Ami Bravdo, Chongren Yao
Rok vydání: 2008
Předmět:
Zdroj: Irrigation Science. 27:109-120
ISSN: 1432-1319
0342-7188
DOI: 10.1007/s00271-008-0124-1
Popis: Water consumption of table grapevines (Vitis vinifera cv. Superior Seedless) trained to a large open-canopy gable system was measured during six growing seasons (1999, 2001–2005) using 12 drainage lysimeters. The lysimeters (1.3 m3 each) were installed as part of a one-hectare vineyard in a semi-arid region in southern Israel. Water consumption of the lysimeter-grown vines (ETc) was used as the basis for the calculation of irrigation applications in the vineyard. Three irrigation treatments, 80% (high), 60% (medium) and 40% (low) of ETc of the lysimeter-grown vines, were applied in the vineyard. Reference evapotranspiration (ETo) was calculated from regional meteorological data according to the Penman–Monteith equation. Seasonal curves for the crop coefficient (K c) were calculated as K c = ETc/ETo. Maximum ETc values in different seasons ranged from 7.26 to 8.59 mm day−1 and seasonal ETc (from DOY 91 through DOY 304) ranged from 1,087 to 1,348 mm over the six growing seasons. Leaf area index (LAI) was measured monthly using the SunScan Canopy Analysis System. Maximum LAI ranged from 4.2 to 6.2 m2 m−2 for the 2002–2005 seasons. A second-order polynomial curve relating K c to LAI (R2 = 0.907, P
Databáze: OpenAIRE
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