scholarly journals Leaf spot and leaflet removal in day-neutral strawberry cultivars under different cultivation conditions, in organic management

2014 ◽  
Vol 32 (1) ◽  
pp. 89-92
Author(s):  
Eduardo Cesar Brugnara ◽  
Mauro Porto Colli
Keyword(s):  
Leaf Spot ◽  
Cultivation Conditions ◽  
Organic Management ◽  
Strawberry Cultivars

scholarly journals Cultivation Conditions Change Aroma Volatiles of Strawberry Fruit

Horticulturae ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 81
Author(s):  
Yunduan Li ◽  
Yuanyuan Zhang ◽  
Xincheng Liu ◽  
Yuwei Xiao ◽  
Zuying Zhang ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Major Contributor ◽  
Fragaria Ananassa ◽  
Strawberry Fruit ◽  
Cultivation Conditions ◽  
Soil Culture ◽  
Aroma Volatiles ◽  
Ms Analysis ◽  
Significant Difference ◽  
Strawberry Cultivars

Volatile compounds principally contribute to flavor of strawberry (Fragaria × ananassa) fruit. Besides to genetics, cultivation conditions play an important role in fruit volatile formation. Compared to soil culture as control, effects of substrate culture on volatile compounds of two strawberry cultivars (‘Amaou’ and ‘Yuexin’) were investigated. GC-MS analysis revealed significant difference in volatile contents of ‘Amaou’ strawberry caused by substrate culture. No significant effect was observed for cultivar ‘Yuexin’. For ‘Amaou’ strawberry from soil culture produced higher volatile contents compared with substrate culture. This difference is contributed by high contents of esters, lactones, ketones, aldehydes, terpenes, hydrocarbons, acids, furans and phenols in ‘Amaou’ strawberry fruit from soil culture. Furanones, beta-linalool, trans-Nerolidol and esters are major contributor to strawberry aroma, whose contents are higher in soil culture planted fruit when compared to substrate culture. Moreover, strawberry fruit from soil culture had higher transcripts related to volatile biosynthesis were observed, including FaQR, FaOMT, FaNES1, FaSAAT and FaAAT2.

Genotype and Approved Fungicide Evaluation for Reducing Leaf Spot Diseases in Organically-Managed Peanut

2011 ◽  
Vol 12 (1) ◽  
pp. 4 ◽  
Author(s):  
Dylan Q. Wann ◽  
R. Scott Tubbs ◽  
Albert K. Culbreath
Keyword(s):  
Leaf Spot ◽  
Field Trials ◽  
Organic Production ◽  
Yield Potential ◽  
Organic Management ◽  
Late Leaf Spot ◽  
Stand Establishment ◽  
Synthetic Pesticide ◽  
Secondary Objective ◽  
Organically Managed

Growers interested in organic peanut (Arachis hypogaea) production need information to identify genotypes and acceptable fungicides for control of early and late leaf spot where synthetic pesticide applications are absent. Field trials were conducted in 2008-2010 to evaluate eleven peanut genotypes for leaf spot resistance and yield potential under organic management. CRSP 983 and Georganic demonstrated the greatest resistance to early and late leaf spot (18 to 59% and 34 to 52% defoliation, respectively), but Florida-07, Georgia-06G, and Tifguard produced the largest yields (2454 to 5424 kg/ha, 3758 kg/ha, and 1760 to 4030 kg/ha, respectively). Tifguard exhibited the best combination of stand establishment, disease resistance, and yield potential of all genotypes and would be a strong option for growers pursuing organic production. Florida-07 and Georgia-06G are also formidable options. A secondary objective was to evaluate the efficacy of three approved fungicides for leaf spot control on peanut under organic management. Copper sulfate + Bacillus subtilis reduced leaf spot defoliation compared to the control. Yet, all three fungicides improved yields under heavy leaf spot pressure. Combining high-yielding, disease-resistant cultivars and organically approved fungicides can significantly improve leaf spot management and yield potential of peanut under organic management. Accepted for publication 2 September 2011. Published 27 October 2011.

scholarly journals EVALUATION OF STRAWBERRY CULTIVARS WITH DIFFERENT DEGREES OF RESISTANCE TO RED STELE

HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 480f-480
Author(s):  
Shahrokh Khanlzadeh ◽  
Robert Pelletler ◽  
Michel J. Lareau ◽  
Deborah Buszard
Keyword(s):  
Fruit Quality ◽  
Leaf Spot ◽  
Fruit Color ◽  
Fruit Firmness ◽  
Fruit Characteristics ◽  
Leaf Scorch ◽  
Infested Field ◽  
Plant Characteristics ◽  
Red Stele ◽  
Strawberry Cultivars

Sixteen commercially grown strawberry cultivars with different degrees of resistance to red stele were evaluated for yield, plant characteristics and fruit quality. `Bounty', `Midway', and `Sparkle' had sufficient interior and exterior fruit color, good to satisfactory flavor and suitability for freezing. However, these cultivars as well as `Redcoat' lacked sufficient fruit firmness. `Bounty', `Redcoat', `Redchief and `Sparkle' had the highest yield in the three-year test. `Annapolis', `Earliglow' and `Scott' had reflexed calyx whereas `Allstar', `Annapolis', `Cornwallis', `Earllglow', `Guardian' and `Sunrise' were characterized by a raised neck suitable for mechanical dehulling. `Sunrise' appeared to be the only cultivar free of leaf scorch and leaf spot. `Tristar', `Redchief, `Lester', `Darrow' and `Arking' roots had the lowest incidence of red stele when planted in a naturally-infested field. No relationship between fruit characteristics was observed which suggests the necessity to examine each Individual tralt.

scholarly journals Susceptibility of Strawberry Cultivars and Advanced Selections to Leaf Spot Caused by Mycosphaerella fragariae

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 592-595 ◽  
Author(s):  
Nathalie Delhomez ◽  
Odile Carisse ◽  
Michel Lareau ◽  
Shahrokh Khanizadeh
Keyword(s):  
Cluster Analysis ◽  
Disease Severity ◽  
Leaf Spot ◽  
High Susceptibility ◽  
Disease Progress Curve ◽  
Progress Curve ◽  
High Level ◽  
Mycosphaerella Fragariae ◽  
Very High ◽  
Strawberry Cultivars

Seventeen strawberry (Fragaria ×ananassa Duchesne) cultivars and six selections were tested under greenhouse conditions for susceptibility to leaf spot induced by Mycosphaerella fragariae (Tul.) Lindau. The level of susceptibility was evaluated based on maximum disease severity and area under the disease progress curve (AUDPC). The 23 genotypes were ranked based on AUDPC and grouped according to their susceptibility. Cluster analysis for AUDPC gave four groups corresponding to low, moderate, high, and very high susceptibility to leaf spot. `Annapolis', `Chambly', `Glooscap', `Redcoat', and `Veestar' consistently showed a low level of susceptibility. The selections SJ89700-1 and SJ8518-11 and `Tribute' showed a very high level of susceptibility, and the remaining cultivars were grouped as either moderately or highly susceptible.

Regulation of superoxide dismutase isoforms in resistant and susceptible strawberry cultivars subjected to leaf spot disease

2008 ◽  
Vol 41 (7) ◽  
pp. 492-500 ◽  
Author(s):  
Behrouz Ehsani-Moghaddam ◽  
Marie Thérèse Charles ◽  
Odile Carisse ◽  
Shahrokh Khanizadeh
Keyword(s):  
Superoxide Dismutase ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Strawberry Cultivars

2012–2016 On-Farm Evaluation of Fungicide Programs for Peanut Disease Control in Hamilton County, Florida

EDIS ◽  
2017 ◽  
Vol 2017 (4) ◽  
Author(s):  
Keith W. Wynn ◽  
Nicholas S. Dufault ◽  
Rebecca L. Barocco
Keyword(s):  
Plant Pathology ◽  
Disease Control ◽  
Leaf Spot ◽  
Fungal Disease ◽  
White Mold ◽  
Stem Rot ◽  
Late Leaf Spot ◽  
Fact Sheet ◽  
On Farm ◽  
Hamilton County

This ten-page fact sheet includes a summary of various fungicide spray programs for fungal disease control of early leaf spot, late leaf spot, and white mold/stem rot of peanut in 2012-2016 on-farm trials in Hamilton County. Written by K.W. Wynn, N.S. Dufault, and R.L. Barocco and published by the Plant Pathology Department.http://edis.ifas.ufl.edu/pp334

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