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USE OF SOME FUNGICIDES IN CONTROL OF APPLE SCAB AND STORAGE DISEASES

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Author(s): Florin Cristian.Marin | Mihaela Sumedrea | Mirela Călinescu | Dorin Sumedrea | Emil Chitu | Nicolae Tănăsescu | Marioara Fodor

Journal: Fruit Growing Research
ISSN 2286-0304

Volume: XXVIII;
Start page: 92;
Date: 2012;
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Keywords: apple cultivars | scab | storage diseases | fungicides.

ABSTRACT
The paper present an analysis of the biological efficacy of some new experimented during 2008-2011 at RIFG Pitesti, in order to protect the stored apples against apple scab, brown rot and other damaging storage diseases. During the experiment, 11 fungicides, including 9 single active ingredients and 2 new actives mixes, were tested by preventive treatments applied in the orchards on 4 winter apple cultivars ‘Golden Delicious’, ‘Idared’, ‘Nured Jonathan’ and ‘Starkrimson’. The biological material was stored in the cold warehouse then assessed under lab conditions. The results obtained revealed that in control of brown rot, the best results were obtained with: Chorus 75 WDG - 0.3 kg/ha/treatment, Rovral 500 SC - 1.5L/ha/treatment, Switch 62.5 - 1kg/ha/treatment and Bellis 38 WG 0.8 kg/ha/treatment (F%: 0.75%; 0.25; 0%; 0%). As regard the control of apple scab, under storage conditions, the finest results were obtained with: Chorus 75 WDG - 0.3 kg/ha/treatment, Mystic Extra 0.75L/ha/treatment, Topsin M70 1kg/ha/treatment, Score 250 EC 0,2L/ha/treatment, Indar 5 EW 1,2 kg/ha/treatment, Toledo 430 SC 0.45L/ha/tratment, Folicur Solo 0.75L/ha/treatment (F%: 0%; 0.36%; 0.75%; 1.37%; 1.75%; 2.01%; 2.25%; 3.75%). Also, the treatments applied in 2011 with Bellis 38 WG 0.8 kg/ha and Switch 62.5 - 1kg/ha/treatment protected very well the stored apples against the apple scab and 4 other specific storage diseases (F%: 0).
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