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20231225140537.0 |
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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-10-19-2225-RE
|2 doi
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|a pubmed24n1035.xml
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|a (NLM)32484420
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Bock, Clive H
|e verfasserin
|4 aut
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| 245 |
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|a The Effect of Tractor Speed and Canopy Position on Fungicide Spray Deposition and Peach Scab Incidence and Severity
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 06.07.2020
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|a Date Revised 06.07.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Peach scab, caused by Venturia carpophila, is a damaging disease of peach in the southeastern United States. Thus, fungicides are applied to reduce peach scab. Tractor speed was investigated as a variable affecting spray deposition and disease control in relation to volume applied. In experiments in 2015 and 2016, trees were sprayed with fungicide to control scab at petal fall to 1% shuck split and at shuck split to 10% shuck off. Speeds were 3.2, 4.8, and 6.4 kph resulting in 1,403, 935, and 701 liters/ha, respectively, with the dose of active ingredient (a.i.) per ha kept constant. Deposition declined for all speeds with later spray dates. There was a negative linear relationship between tractor speed and spray coverage on three of four dates the experiment was repeated. Tractor speed (different volumes, equal doses) affected peach scab. In 2015 and 2016, mean incidence at 3.2, 4.8, and 6.4 kph was 68.6, 59.2, and 38.3%, and 64.2, 53.0, and 40.4% of fruit scabbed, respectively. Effect of speed on lesion number per fruit depended on year: in 2015, lesions per fruit were reduced at 6.4 kph compared with 3.2 and 4.8 kph but were not different in 2016. Control trees had fewer lesions per fruit high in the canopy, but there was little effect of sample height in fungicide-treated trees. Concentration of a.i. in lower volumes applied at higher speed may provide some benefit in reducing incidence of peach scab, but there appeared to be less effect on severity
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|a Journal Article
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|a epidemiology
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|a fruit crops
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| 650 |
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|a fungi
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| 650 |
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|a fungicide
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|a integrated management
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7 |
|a Fungicides, Industrial
|2 NLM
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|a Rains, Glen C
|e verfasserin
|4 aut
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|a Hotchkiss, Mike W
|e verfasserin
|4 aut
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|a Chen, Chunxian
|e verfasserin
|4 aut
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| 700 |
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|a Brannen, Phil M
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 104(2020), 7 vom: 01. Juli, Seite 2014-2022
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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|g volume:104
|g year:2020
|g number:7
|g day:01
|g month:07
|g pages:2014-2022
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