Dynamics of fungicide sensitivity in Venturia effusa and fungicide efficacy under field conditions (Record no. 51336)

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fixed length control field 02206nam a2200205Ia 4500
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control field MX-MdCICY
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control field 20250625160205.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-17173
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 250602s9999 xx |||||s2 |||| ||und|d
245 10 - TITLE STATEMENT
Title Dynamics of fungicide sensitivity in Venturia effusa and fungicide efficacy under field conditions
490 0# - SERIES STATEMENT
Volume/sequential designation Plant Disease, 102(8), p.1606-1611, 2018
520 3# - SUMMARY, ETC.
Summary, etc. Venturia effusa, which causes pecan scab, has developed resistance to fungicides that were once effective. Over 2 years, laboratory-based sensitivity of fentin hydroxide (TPTH)and tebuconazole in V. effusa and their efficacy under field conditions were compared. Leaf and nut scab were assessed on pecan trees receiving 10 applications of TPTH, tebuconazole, azoxystrobin, azoxystrobin plus tebuconazole, TPTH plus tebuconazole, or no fungicide (NTC)per year. Sensitivity of V. effusa on leaflets collected from treated and nontreated trees was assessed in June and September, respectively. The mean relative germination (RGe)on TPTH at 30 µg/ml was 10.9 and 40.9 percent in 2016 and 4.2 and 0.6 percent in 2017. Mean relative growth (RGr)on tebuconazole at 1 µg/ml was 45.5 and 34.6 percent in 2016 and 69.3 and 56.3 percent in 2017. In both years, leaf and nut scab were significantly lower on trees treated with azoxystrobin, azoxystrobin + tebuconazole, or TPTH + tebuconazole when compared with NTC and tebuconazole-treated trees. Compared with the NTC, tebuconazole did not significantly reduce leaf scab in 2017 or nut scab in either year, indicating that an RGr value between 34.6 and 69.3 percent is likely to result in a control failure on tebuconazole-treated trees. Although better activity was expected, TPTH reduced scab with RGe values between 0.6 and 40.9 percent. These results are valuable for developing fungicide sensitivity thresholds to better predict fungicide performance.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element FUNGICIDE
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Standish, J. R.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Brenneman, T.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Stevenson, K. L.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1iQwsxQ0JBUpmfaSzVIRUqNH42AdY-UWE/view?usp=drivesdk">https://drive.google.com/file/d/1iQwsxQ0JBUpmfaSzVIRUqNH42AdY-UWE/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-17173 25.06.2025 25.06.2025 Documentos solicitados