UCCE Approved Acala and Pima Variety Trials


The objectives of these studies with Acala and Pima varieties are to evaluate approved Acala varieties and Pima varieties submitted for testing under different environmental conditions and management across the San Joaquin Valley region of California. In order to provide a reasonable limit on the number of varieties in the tests, the entries include newly-approved varieties (approved by the San Joaquin Valley Cotton Board) for the current year, varieties released last year that are in their second year of testing, plus the top 4 or 5 previously-approved varieties (in terms of planted acreage). The new varieties are the focus of tests, but only remain in tests for a minimum of two years following release unless that variety moves into the top 4 or 5 varieties in planted acreage. Released varieties also may not show up in tests if companies request that the variety is for a special market and don’t want it in multiple location testing, or when seed supplies are inadequate. The Pima tests focus on approved varieties, but in the past two years have also included a non-approved hybrid that has been of interest due to yield…


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2006 Activities- at Shafter and West Side REC sites. This testing program is maintained for nonAcala Upland cotton varieties at both the UC Shafter and UC West Side Research and Extension Centers in small plot trials which have been conducted since 1998 in response to requests for continuing information on varieties outside of the Approved Acala testing program. The project investigators are appreciative for the participation by seed companies and the UC Research Centers in providing support for ongoing testing ofnon-Acala Uplands. The actual varieties included in 2006 trials are shown in Table 1, but yield and lint quality data will not be available on 2006 studies until December 2006. Summary results will be posted on our UC cotton web site: and in a January 2007 issue of the California Cotton Review…

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