Coronavirus COVID-19 Resources

Cotton Planting Forecast

 

Archives

INFLUENCE OF IRRIGATION REGIME ON YIELD OF MAXXA AND PHYTOGEN-72

 

Many Acala cottons go rank when over-irrigated, and the final yield is often less than maximum. Under-watering also reduces yield. The goal of this project was to find the depth of water application that would maximize yield. This is the end of the third season of an experiment in field 41A of the south 40, with 6 different application rates, using daily irrigation with a subsurface drip irrigation system. A RCB split plot design was used with 2 reps to compare Maxxa to PhytoGen-72. Each of the main treatment…

 

Download full copy of Research here

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 Califomia. 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 VaJJey 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…

Download full copy of Research here

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”…

Download full copy of Research here

UCCE APPROVED ACALA VARIETY TRIALS

 

1998 Studies
Eleven approved Acala varieties were planted in tests in 1998. Varieties included the standard, Maxxa, plus Phytogen-33, SJ-2, GC-510, Royale, DPL-6204, GC-535, C-141, GTO Maxxa, GC-500 and DP-6211. Tests were located in each ofthe six San Joaquin Valley cotton-producing counties, plus the Shafter and West Side Research and Extension Centers of the University of CA. Tests in grower fields were large scale, with individual entries grown in 6 to 8 row width plots averaging 1300 feet or more in row length. All studies had 4 replications in a randomized complete block design. Studies at West Side and Shafter locations were smaller, with plots 4 rows in width by 300 feet length…

 

Download full copy of Research here

SJV COTTON BOARD ACALA, PIMA AND UPLAND TESTING PROGRAM- 1998

 

The unprecedented weather conditions of 1998 dominated the season. With abnormally cold temperatures both in the spring and in the fall, the most abbreviated growing season ever experienced took a heavy toll on production. Even with a full month delay in harvest, many bolls failed to open – a result of too few heat units to mature the late set. In these tests average yields of all carry-over entries were more than a bale an acre below that of the same variety the year before. In general, quality was not detrimentally affected, but because of the exceptionally adverse conditions varietal relationships, especially as it relates to yield, are not necessarily what might be expected in a more normal year…

 

Download full copy of Research here

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…

Download full copy of Research here

Comparison of Subsurface Drip and Furrow Irrigation of Cotton on Very Sandy Soil Under Fusarium-Nematode Pressure

OBJECTIVES: To compare drip and furrow irrigation by measuring
the emergence, plant growth characteristics, yield, rate of plant die-off, and water use of Acala cotton on very sandy soil with a great deal of pressure from nematodes and Fusarium wilt.

PROCEDURES: This experiment was started in the Spring of 1989 on a 0.4-ha plot of uniform loamy sand soil.

Download full copy of Research here