2015 (University of California PIMA VARIETY TRIAL)
Fiber Quality (hvi) data summary (USDA Visalia Classing Office)
Questions?
Contact: Bob Hutmacher, (Univ. CA)
Cell: (559) 260-8957
email: rbhutmacher@ucdavis.edu
Cooperative Project by: 1/30/2016 version
University of California Cooperative Extension (UC-ANR) / Univ. CA Davis Plant Sci. Dept./ Univ. CA West Side REC
Funding by: CA Cotton Growers Assoc., CA Cotton Alliance, Cotton Incorporated, UC-ANR / UCCE, UCD Plant Sciences
Cooperators: multiple growers, Steve Wright, Dan Munk, Mark Keeley, Raul Delgado, Tarilee Frigulti, Nick Clark, Bill Weir, Brian Marsh, SJV Quality Cotton Growers Assoc – Shafter, UCCE Tulare, Kings, Fresno, Kern, Merced Co.’s
LOCATION: RIVERDALE (Fresno County)
HARVEST DATE: 10/22
Download full copy of Research here
2015 (University of California PIMA VARIETY TRIAL)
Fiber Quality (hvi) data summary (USDA Visalia Classing Office)
Questions?
Contact: Bob Hutmacher, (Univ. CA)
Cell: (559) 260-8957
email: rbhutmacher@ucdavis.edu
Cooperative Project by: 1/30/2016 version
University of California Cooperative Extension (UC-ANR) / Univ. CA Davis Plant Sci. Dept./ Univ. CA West Side REC
Funding by: CA Cotton Growers Assoc., CA Cotton Alliance, Cotton Incorporated, UC-ANR / UCCE, UCD Plant Sciences
Cooperators: multiple growers, Steve Wright, Dan Munk, Mark Keeley, Raul Delgado, Tarilee Frigulti, Nick Clark, Bill Weir, Brian Marsh, SJV Quality Cotton Growers Assoc – Shafter, UCCE Tulare, Kings, Fresno, Kern, Merced Co.’s
LOCATION: LOS BANOS (Merced County)
HARVEST DATE: 10/26
Download full copy of Research here
2015 (University of California PIMA VARIETY TRIAL)
Fiber Quality (hvi) data summary (USDA Visalia Classing Office)
Questions?
Contact: Bob Hutmacher, (Univ. CA)
Cell: (559) 260-8957
email: rbhutmacher@ucdavis.edu
Cooperative Project by: 1/30/2016 version
University of California Cooperative Extension (UC-ANR) / Univ. CA Davis Plant Sci. Dept./ Univ. CA West Side REC
Funding by: CA Cotton Growers Assoc., CA Cotton Alliance, Cotton Incorporated, UC-ANR / UCCE, UCD Plant Sciences
Cooperators: multiple growers, Steve Wright, Dan Munk, Mark Keeley, Raul Delgado, Tarilee Frigulti, Nick Clark, Bill Weir, Brian Marsh, SJV Quality Cotton Growers Assoc – Shafter, UCCE Tulare, Kings, Fresno, Kern, Merced Co.’s
LOCATION: CORCORAN (Kings County)
HARVEST DATE: 10/26
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OBJECTIVES OF RESEARCH:
2013 was the second year and 2014 is the third year of a field research trial that focuses on deficit drip management practices that could be utilized to tighten up and shorten the fruit production period and evaluation of these practices using both full-season commercial Acala and Pima cultivars and experimental germplasm (USDA-ARS and/or commercial companies)…
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PROJECT SUMMARY:
This project matches the efforts in a similar named project supported by the California Cotton Incorporated State Support Committee. The difference between the two is that the Cotton Incorporated part of the project is set up to support only Acala and Upland cultivar research, while the CA Cotton Alliance project supplements that support and also allows us to also focus on Pima variety screening and related efforts for Pima production. CA Cotton Alliance funds support the same areas of work as the Cotton Incorporated funded project, but since Cotton Incorporated funds are collected for Upland variety work, the expanded efforts in screening, including Pima, are covered under this same project summary report…
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Introduction
Irrigation scheduling methods in the irrigated far west are not uniformly accepted and depend on irrigation system, production economics and the management investment the grower is committed to. Most current and successful methods use soil and/or plant-based measurements that are combined with regional estimates of ETa and Kc to calculate best irrigation timing. Growers that make use of the available technology find that the time and financial costs invested in making careful field evaluations improve farm economics. Seasonal cotton water use for optimum yields can exceed 750 mm (30 inches) with typical rainfall contributions less than 15 percent of total season water requirements. Crop water requirements are distributed unevenly across the season with very low ET observed in the 60 days following planting and peak ET observed 100 to 115 days after planting. The highest cotton water use period is from late June to mid August during peak-bloom with daily water use of slightly over 2.0 inches per…
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Cotton Harvest Aid Management 2013
This report summarizes the applied defoliation research studies conducted during 2013. This was another unique season due to warm weather causing rapid progression of the cotton crop. Three research trials were conducted on Pima cotton at the Westside Research Center in Five Points, CA. These fields were planted with Phytogen 802RF on April 16, 2013 with a seed rate of 18 lbs/A. The fields received a pre-irrigation, three in-season irrigations, and pressure bomb readings were taken to better manage plant vigor. In addition, the fields received 140 lbs of nitrogen urea plus 14 lbs sidedress of Temik (Aldicarb) on May24, 2013. The fields also received 16 ounces of Mepex (Mepiquat Chloride) on June 19th and again on July 1, 2013. The plots were 65’ in length and consisted of four rows with 40” spacing. In each trial, each treatment had 4 replications.
The objective of these studies was to define the most appropriate conditions for effective defoliation and crop termination. New harvest aids and several tank mix combinations…
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The objectives of these studies with Pima cotton are primarily to evaluate new, approved, and high interest varieties under different environmental conditions and management regimes practiced at REC sites and grower fields across the San Joaquin Valley region of California. Variety evaluations for yield and quality performance for varieties submitted into these trials are initially the responsibility of the San Joaquin Valley Cotton Board. The farm advisors extend these evaluations by adding some continuing field testing of newly-approved and high interest varieties to the Pima tests of the SJV Cotton Board. Pima acreages continue to change. The reason for continuing changes in acreages is overall reductions in planted cotton acreage in California in recent years, but part is also related to increasing shifts to Pima. There are tradeoffs in shifting to Pima (typically reductions in yields) and in shifts to non-Acala Uplands (typically lower price for lint), and growers need reliable, unbiased information regarding expected lint yields and fiber quality in order to make reasonable, lower-risk decisions. Acreage will continue to be volatile with changing input costs and disparities in cotton prices between non-Acala Upland, Acala and Pima cottons…
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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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Fusarium w.ilt of cotton in California has been considered a potentially serious fungal disease caused by the organism Fusarium oxysporum vas infectum (also called ”FOV”) for many decades in several areas of the San Joaquin Valley (SJV). In the past, however, damage associated with FOV in SJV cotton has been notable only in areas with the combination of: (a) moderate to high populations of one or more specific races of FOV (usually race 1 ); (b) soils with a sandy or sandy loam texture; and (c) where root lrnot nematodes were present in high-enough populations to cause some significant root damage. Past research generally indicated that FOV damage was worst when both FOV inoculum and nematodes were present in relatively high…
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