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Water use and crop coefficient of subsurface drip-irrigated lettuce in Central Arizona AGRIAMBI
Oliveira,Aureo S. de; Martin,Edward C.; Slack,Donald C.; Pegelow,Edward J.; Folta,Allen D..
A two year field study (1996/97 and 1997/98 growing seasons) was carried out at the Maricopa Agricultural Center (33º04'07" N; 111º57'18" W) of the University of Arizona, USA, to investigate the water use and to derive Kc's for subsurface drip-irrigated head lettuce grown in small weighable lysimeters. Measurement periods ranged from 480 to 1100 ºC-day (96/97) and from 439 to 1098 ºC-day (97/98). These intervals corresponded essentially to the second half of the crop cycle which amounted to a 1100 ºC-day, on average. The lysimeters were weighed periodically and the computation of the water balance revealed an average water use of 117 mm. Basal crop Kc was expressed as a function of cumulative growing degree days following a multiple linear regression...
Tipo: Info:eu-repo/semantics/article Palavras-chave: SDI; Lactuca sativa; Lysimeter; Evapotranspiration.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662005000100006
Registros recuperados: 1
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