Dataset extent

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SAPWAT3

This publication reports on a WRC project focused on technology transfer and evaluation of SAPWAT3, an irrigation water requirement estimation and planning tool. It aims to (i) verify SAPWAT3 program outputs, (ii) demonstrate SAPWAT3 to potential users, and (iii) evaluate adoption potential using innovation adoption theory (Rogers) and the Technology Acceptance Model (TAM). It describes the background and rationale for disseminating SAPWAT3 widely, given its development over many years of WRC-funded research and its use in irrigation planning and licensing contexts. The report also documents enhancements such as a module to import crop data “en masse” and a module to compare SAPWAT3 estimated daily evapotranspiration against field-measured data to improve credibility and support refinement of crop coefficients and growth stage parameters. It includes methodology, example outputs (graphs/correlations), and survey results on user acceptance, usefulness, ease of use, barriers, and preferred support mechanisms.

Data and Resources

Additional Info

Field Value
Email vanderLaanM@arc.agric.za
Authors
Author 1
Author first name
Pieter
Author surname
van Heerden
Email
psvh@mweb.co.za
Author organization
University of the Free State
Department
Admin
Is this author a contact person for the dataset?
True
Contact person
Contact 1
Contact name
Pieter
Email
psvh@mweb.co.za
Contact organization
University of the Free State
Department
Admin
Recommended citation Van Heerden, P.S. & Crosby, C.T. (2011). Technology Transfer of SAPWAT3, Verifying Correctness of Program Output and Evaluation of its Adoption Potential. Report to the Water Research Commission. WRC Report No. KV 271/11. ISBN 978-1-4312-0100-6. Pretoria, South Africa.
Did the author / contact organization collect the data? false
Name of organization that collected the data Water Research Observatory
Dataset language English
Publisher Water Research Commission
Publication date 2011-04-01
Project number WRC Project No. K8/879//4
License Open (Creative commons)
License URL https://creativecommons.org/licenses/by-sa/4.0/
Keywords SAPWAT3, irrigation planning, crop water requirements, evapotranspiration, Penman–Monteith, crop coefficients, irrigation scheduling, technology transfer, adoption potential, Technology Acceptance Model (TAM), diffusion of innovations
Geographic location or bounding box coordinates
Topic category Agriculture
Data structure category Structured (clearly labelled and in a standardised format)
Uploader estimation of extent to which data have been processed Access
Is the data time series or static Both
Data reference date
Data reference date 1
Data reference date (from)
1950-01-01
Data reference date (to)
2025-12-31
Alternate identifier ISBN 978-1-4312-0100-6
Vertical extent datum masl
Vertical minimum-maximum extent
Vertical minimum-maximum extent 1
Minimum vertical extent
0
Maximum vertical extent
3451
I agree to the data management plan and terms and conditions of the WRO true