Response of PIWI grapevine cultivars to downy mildew in highland region of southern Brazil

2019 ◽  
Vol 154 (4) ◽  
pp. 1051-1058 ◽  
Author(s):  
Jean A. Zanghelini ◽  
Amauri Bogo ◽  
Lirio L. Dal Vesco ◽  
Beatriz R. Gomes ◽  
Cristian V. Mecabô ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Southern Brazil ◽  
Highland Region

scholarly journals Prohexadione-calcium on downy mildew and botrytis bunch rot epidemiology, and yield and technological and phenolic parameters of the Merlot vine cultivar in the highland region of southern Brazil

2021 ◽  
Vol 51 (7) ◽  
Author(s):  
Juliana Reinehr ◽  
Amauri Bogo ◽  
Leo Rufato ◽  
Ricardo Trezzi Casa ◽  
Fabio Nascimento Silva ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Disease Incidence ◽  
Gibberellin Biosynthesis ◽  
Southern Brazil ◽  
Highland Region ◽  
Growing Seasons ◽  
Full Flowering ◽  
Significant Difference ◽  
Bunch Rot ◽  
Prohexadione Calcium

ABSTRACT: Prohexadione-calcium (ProCa) is a gibberellin biosynthesis inhibitor and the objective of this study was to evaluate the effect of ProCa on the downy mildew (DM) and Botrytis bunch rot (BBR) epidemiology, and the yield and technological and phenolic parameters of grape Merlot cultivar. Experiments were carried out in a commercial vineyard in São Joaquim Municipality/SC, Southern Brazil, during the 2017-2018 and 2018-2019 growing seasons. ProCa was applied at four doses and three phenological stages: A) 0 g ha−1 (control); B) 1000 g ha−1 (inflorescence fully developed); C) 500 + 500 g ha−1 (inflorescence fully developeted and full flowering); D) 500 + 500 + 500 g ha−1 (inflorescence fully developed, full flowering, and berries pea-sized). DM and BBR incidence and severity were quantified weekly from the first symptom appearance until harvest, and their epidemiology was compared according to: a) the beginning of symptom appearance; b) the time to reach the maximum disease incidence and severity; c) the maximum value of disease incidence and severity; d) the area under the disease progress curve. In general, there were significant differences in the ProCa doses for all epidemiologic parameters of DM and BBR compared with the control plot; however, there was no significant difference among the ProCa doses. The principal epidemiological variables that differentiated the effect of ProCa on the DM and BBR control were the Smax and AUSDPC. Some yield and technological and phenolic parameters were negatively affected by different doses of ProCa, but it was still a good option for DM and BBR control in highland region of southern Brazil during the 2017-2018 and 2018-2019 growing seasons.

Effect of four training systems on the temporal dynamics of downy mildew in two grapevine cultivars in southern Brazil

2016 ◽  
Vol 41 (6) ◽  
pp. 370-379 ◽  
Author(s):  
Betina P. de Bem ◽  
Amauri Bogo ◽  
Sydney E. Everhart ◽  
Ricardo T. Casa ◽  
Mayra J. Gonçalves ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Temporal Dynamics ◽  
Southern Brazil ◽  
Training Systems

scholarly journals Biting activity of Aedes scapularis (Rondani) and Haemagogus mosquitoes in Southern Brazil (Diptera: Culicidae)

1988 ◽  
Vol 22 (2) ◽  
pp. 84-93 ◽  
Author(s):  
Oswaldo Paulo Forattini ◽  
Almério de Castro Gomes
Keyword(s):  
Aedes Aegypti ◽  
Yellow Fever ◽  
Diurnal Activity ◽  
Southern Brazil ◽  
Nocturnal Activity ◽  
Paulo State ◽  
Highland Region ◽  
Successful Adaptation

The biting activity of a population of Aedes scapularis (Rondani), Haemagogus capricornii Lutz and Hg. leucocelaenus (Dyar and Shannon) in Southern Brazil was studied between March 1980 and April 1983. Data were obtained with 25-hour human bait catches in three areas with patchy residual forests, named "Jacaré-Pepira", "Lupo" Farm, and "Sta. Helena" Farm, in the highland region of S. Paulo State (Brazil). Data obtained on Ae. scapularis were compared with those formerly gathered in the "Ribeira'' Valley lowlands, and were similar, except in the "Lupo" Farm study area, where a precrepuscular peak was observed, not recorded at the "Jacaré-Pepira" site or in the "Ribeira" Valley. In all the areas this mosquito showed diurnal and nocturnal activity, but was most active during the evening crepuscular period. These observations support the hypothesis about the successful adaptation of Ae. scapularis to man-made environments and have epidemiological implications that arise from it. As for Haemagogus, results obtained on the "Lupo" and "Sta. Helena" regions agree with previous data obtained in several other regions and show its diurnal activity. The proximity of "Lupo" Farm, where Hg. capricornii and Hg. leucocelaenus showed considerable activity, to "Araraquara" city where Aedes aegypti was recently found, raises some epidemiological considerations about the possibility of urban yellow fever resurgence.

scholarly journals Downy mildew intensity in tolerant grapes varieties in highlands of southern Brazil

2016 ◽  
Vol 7 ◽  
pp. 01015 ◽  
Author(s):  
Betina de Bem ◽  
Emilio Brighenti ◽  
Bruno Farias Bonin ◽  
Ricardo Allembrandt ◽  
Leonardo Araújo ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Southern Brazil

First report of oospore formation in Plasmopara viticola , the causal agent of grapevine downy mildew, in highland regions of southern Brazil

2021 ◽  
Author(s):  
Camila Bitencourt ◽  
Patricia Maria O. Pierre ◽  
Felipe A. M. F. Pinto ◽  
Paulo Cesar Poeta Fermino‐Junior ◽  
Beatriz Ribeiro Gomes ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Plasmopara Viticola ◽  
Causal Agent ◽  
Southern Brazil ◽  
First Report ◽  
Grapevine Downy Mildew ◽  
Oospore Formation

scholarly journals Effect of Y-trellis and vertical shoot positioning training systems on downy mildew and botrytis bunch rot of grape in highlands of southern Brazil

2015 ◽  
Vol 185 ◽  
pp. 162-166 ◽  
Author(s):  
Betina Pereira de Bem ◽  
Amauri Bogo ◽  
Sydney Everhart ◽  
Ricardo Trezzi Casa ◽  
Mayra Juline Gonçalves ◽  
...  
Keyword(s):  
Downy Mildew ◽  
Southern Brazil ◽  
Training Systems ◽  
Bunch Rot

Validation of a screening instrument for postpartum depression in Southern Brazil

2009 ◽  
pp. 1-11
Author(s):  
Carlos Zubaran ◽  
Katia Foresti ◽  
Marina Verdi Schumacher ◽  
Aline Luz Amoretti ◽  
Lucia Cristina Muller ◽  
...  
Keyword(s):  
Postpartum Depression ◽  
Screening Instrument ◽  
Southern Brazil

Excavations at Miltown of Clava, Inverness-shire

1993 ◽  
Vol 18 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Niall M Sharples
Keyword(s):  
Highland Region ◽  
Large Spread

Summary This report presents the results of the excavation of a cairn at Miltown of Clava, Inverness District, Highland Region. The excavations were superficial but revealed that underneath a large spread of more recent field clearance was a prehistoric cairn probably of Clava type. The cairn was circular with an estimated diameter of 12m. To the SW of the cairn is a large standing stone and lying on the cairn was a large slab decorated with small cup marks. The presence of both these features is characteristic of Clava type cairns.

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