I can't browse the internet in real-time, but I can recommend some reputable websites where you're likely to find information about changes in spray irrigation systems and the reasons behind those changes. Here are some suggestions:
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USDA Natural Resources Conservation Service (NRCS) - The NRCS website often has resources on irrigation practices, including updates and changes to systems. Check their publications section for detailed information.
Website: https://www.nrcs.usda.gov
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Irrigation Association - This organization provides comprehensive resources on various irrigation systems, including advancements in spray systems and best practices.
Website: https://www.irrigation.org
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University Extension Programs - Many agricultural colleges and universities (like the University of California, Texas A&M, or Colorado State) have extension programs that publish articles and research on irrigation practices, innovations, and changes.
Example: UC Agriculture and Natural Resources
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Journal of Irrigation Science - This academic journal publishes research related to irrigation systems, including spray irrigation. You might find studies detailing system changes and their impacts.
Website: https://www.springer.com/journal/220
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Farm Progress - This agricultural news site often covers innovations in farming practices, including irrigation technology updates.
Website: https://www.farmprogress.com
You can use the search functions on these sites to find specific articles or reports discussing changes in spray irrigation systems and the reasons behind those changes.