ALBUQUERQUE, M. F.; http://lattes.cnpq.br/8614612408903321; ALBUQUERQUE, Monik Fernandes de.
Résumé:
The water footprint concept has gained interest because the freshwater is a global
resource to the full range of activities and can be instrumental in helping to understand
how activities and products relate to water scarcity. The purpose of this study is to
compare the sugarcane water footprint measurements of crop and derived crop
product to the traditional method used for estimating water footprint of crops and
using more complete soil water balance at the field level. The field experiment was
carried out in commercial distillery Fazenda Capim II located in the coastal area of
state of Paraiba Brazil, in the period from October 2009 to August 2010 with
sugarcane (Saccharum officinarum L.). The results indicated that the green and gray
water footprint values decrease as there is an increase in irrigation. Inversely, the blue
water footprint values increase as there is an increase in irrigation. The sugarcane
water footprint based on the CROPWAT model overestimates green and blue water
footprint values and underestimates the gay water footprint values obtained from the
soil water balance.