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2015 (University of California UPLAND / ACALA VARIETY TRIAL) – West Side

 

2015 (University of California UPLAND / ACALA VARIETY TRIAL)
Seed cotton yields, lint percent, gin turnout percent, lint yields

Questions?
Contact: Bob Hutmacher, (Univ. CA)
Cell: (559) 260-8957
email: rbhutmacher@ucdavis.edu

Cooperative Project by: 1/18/2016 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: WEST SIDE Research and Extension Center (Fresno County)
HARVEST DATE: 10/26

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2015 (University of California UPLAND / ACALA VARIETY TRIAL) – Shafter

 

2015 (University of California UPLAND / ACALA VARIETY TRIAL)
Seed cotton yields, lint percent, gin turnout percent, lint yields

Questions?
Contact: Bob Hutmacher, (Univ. CA)
Cell: (559) 260-8957
email: rbhutmacher@ucdavis.edu

Cooperative Project by: 1/18/2016 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: SHAFTER (Kern County)
HARVEST DATE: 11/09

 

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2014 Field Evaluation Support and Variety Screening Evaluations

 

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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Population development, selection, and evaluation for heat stress, fiber quality, lint yield, and pest resistance

 

Objectives: To improve cotton germplasm with potential heat stress tolerance, better fiber quality, lint yield and pest resistance, broadening the genetic base of cotton.

Justification and Problem Statement
Over the last 3 5 years, the cotton germplasm base used in plant breeding has narrowed. This relatively narrow genetic diversity has been suggested as a contributor to an apparent plateau in breeding progress. It may also represent an impediment to efforts to sustain high yields (May and Taylor, 1998; Meredith, 1992; Ulloa, 2006). Since the re-establishment of a cotton breeding effort within the USDA-ARS, Western Integrated Cropping Systems Research Unit, we have focused on increasing genetic diversity through acquisition of novel germplasm (from multiple sources including non-commercial land races and species of wild cottons)…

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Race 4 Fusarium Field Evaluations of Chemical and Cultural Controls to Reduce Inoculum Survival

 

Greenhouse studies have evaluated the impact of metam sodium applications, with and without solarization films and associated soil heating, on development of FOV symptoms in varieties of cotton previously recognized as highly-susceptible (a Pima, Phytogen 810-R or DP-744) or moderately susceptible (an Acala, Phytogen-72). The soil media used was a 1:2 mix of soil from a highly infested field site mixed with steam-treated potting mix. Trays of soil mix received the treatments and post-treatment, the soil was transferred into clean, waxed cardboard containers to plant out the seed for further evaluations of disease symptom development and plant survival percentages. In metam sodium trials, three different rates of metam sodium alone did not significantly impact the survival rate (about 30%) or symptoms (root vascular stain index rating averaging about 3 on a scale of 0 (no symptoms) to 5 (severe symptoms) in highlysusceptible Pima varieties. In the moderately susceptible Acala variety, the metam sodium treatments improved the survival rate and reduced vascular stain ratings wl1en compared with untreated soil. In the first trial, averages of about 90% survival were recorded for treated soil versus about 60% survival for untreated. In the second trial, an average of about 90% survival was recorded for treated soil versus…

 

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Assessment of Fusarium in SJV Cotton: Field Evaluation Support and Variety Screening Evaluations

 

PROJECT SUMMARY
In California, Fusarium wilt of cotton has been considered a potentially serious fungal disease caused by the organism Fusarium oxysporum vas infectum (also called “FOV”). However, in the past, damage associated with Fusarium in SJV cotton has been notable only in production areas with the combination of: (a) moderate to high populations of a specific race of FOV (usually race 1 ); (b) soils witl1 a sandy or sandy loam texture; and (c) root knot nematodes present in high-enough populations to cause significant galling and root damage. Past research generally indicated that FOV damage was worst when both FOV inoculum and nematodes were present in relatively higl1 concentrations. Methods used in the past to limit damage to cotton associated with Fusarium wilt have been to avoid planting cotton in soils in which the combination of sandy or sandy loam texture is combined with the presence of root knot nematode, or grow cotton only infrequently…

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ACALA VARIETY TRIALS IN THE SAN JOAQUIN VALLEY

 

Acala cotton varieties were grown on about 100,000 acres out of the greatly reduced total acreage of about 275,000 acres in 2008. Part of 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 shifts to Pima and non-Acala Upland cotton. 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. The San Joaquin Valley Cotton Board will remain the avenue for varieties to enter our “Approved Variety” testing program. Within Acala testing, the combined SJV Cotton Board and the UCCE Farm Advisor Approved Acala trials represents a source for broadly-based information on varietal performance. Separate trials involving newly-available CA Upland varieties continue to be conducted by Hutmacher and staff at Shafter and West Side REC sites to complement SJVCB I Approved Acala studies. Variety evaluations for yield and quality performance for…

 

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