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UPLAND COTTON VARIETAL RESPONSE TO SHORT-SEASON VERSUS LONG-SEASON MANAGEMENT PRACTICES

 

1998 was a year which brought many changes in the variety situation in the CA cotton industry. Many o f the management recommendations currently in place for CA Upland cotton are based upon years of research on varieties such as SJ-2, GC-510 and Maxxa. The introduction of some potentially widely-different varieties which were developed in environments outside of CA in most cases represents a real challenge in terms o f identifying the most suitable management practices for best results under SJV conditions. These “newly-available” varieties that will come into CA will have the name designation “CA Upland”…

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CA UPLAND VARIETY TRIALS – LARGE-SCALE AND SCREENING

Bob Hutmacher
.UCCE Extension Agronomist
Department of Agronomy and Range Science
UC Davis I Shafter REC
(661) 746-8020 I fax (661) 746-1619
rbhutmacher@ucdavis.edu

Cooperators: Ron Vargas, Steve Wright, Bill Weir, Bruce Roberts,
Dan Munk, Brian Marsh, Mark Keeley, Raul Delgado, Scott Perkins

1999 Studies

In 1999, studies are underway at nine locations in the San Joaquin Valley in tests run by our office in cooperation with the six San Joaquin Valley UCCE cotton Farm Advisors.  At the time of writing this report, we have limited data to report, since no final plant mapping data have been analyzed and we are still a way off from defoliation and harvest. Instead, the following will be a brief description of the type of testing program initiated for 1999, and data collection plans.

Two different types of studies are underway this year, (a) a large-scale plot study on grower fields to evaluate varieties in large plots, where adequate seed…

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