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How Much and When to Irrigate the Crops Using Water Content Reflectometer
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 884-890 in Proceedings of the World Congress of Computers in Agriculture and Natural Resources (13-15, March 2002, Iguacu Falls, Brazil) 701P0301.(doi:10.13031/2013.8424)
Authors: M. Montiel, E. Peña, y A. Chávez
Keywords: field capacity, permanent wilting point, temporary wilting point, water content reflectometer
In the hereby work a methodology to determine the irrigation moment using water
content reflectometer (WCR) measurement equipment is applied. Initially a
traditional concepts revision on the soils humidity calculus and irrigation
programming was performed. Through the general study of soils of the II-1 Module
of the District 010 Culiacn, Sinaloa, Mxico, with its layers texture data, were
calculated by means of the proposed methodology by IMTA, adapted from Rawls
and Brakesiek, (1997), the field capacity humidity parameters (qcc) and permanent
wilting point (qpmp), as well as the humidity from which advantage can be taken
(HA). These values were plotted in SURFER ambiance as isoindexes for irrigation
programming in a graphical system in real geographical coordinates.