Pinto, K.M.S. and do Nascimento, L.C. and de Souza Gomes, E.C. and da Silva, H.F. and Miranda, J.R. (2012) Efficiency of resistance elicitors in the management of grapevine downy mildew Plasmopara viticola: epidemiological, biochemical and economic aspects. European Journal of Plant Pathology . pp. 1-10.
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Abstract
This paper aimed to evaluate the efficiency of resistance elicitors in the management of grapevine downy mildew (Plasmopara viticola), identify the action of the elicitors on host metabolism, and determine their economic viability. The experiments were performed in a commercial vineyard variety ‘Isabel’ (Vitis labrusca) at Vale do Sirijí [Natuba, Paraiba State in Brazil, in the period of September 2009 to January 2010 (first season) and February to June 2010 (second season)]. The statistical design of randomized blocks consisted of eight treatments (untreated control, fungicide (pyraclostrobin+metiram), potassium phosphite, Agro-Mos®, Fungicide+potassium phosphite, Fungicide+Agro-Mos®, potassium phosphite+AgroMós® and Fungicide+potassium phosphite+Agro-Mos®) with four replications, with the experimental unit consisting of 45 leaves. Applications were made every 7 days, starting 20 days after pruning (DAP) with a total of 12 sprays. The evaluations were carried out biweekly, analyzing the following variables: incubation period, disease incidence and severity, area under the disease progress curve, and efficiency of control. The enzymatic determination was performed using pulp extracts from three fruits harvested at 45, 60, 90 and 120 DAP for each treatment. The resistance elicitors were able to reduce the disease incidence under different climatic conditions, indicating their viability as an alternative for the management of Plasmopara viticola.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Vitis labrusca L. – Mildew – Resistance induction |
| Author Affiliation: | Universidade Federal da Paraíba, Rodovia,Brazil, Instituto Federal do Sertão Pernambucano, Petrolina, PE, Brazil, Laboratório de Fitopatologia CCA/UFPB,Rodovia,Brazil |
| Subjects: | Plant Production |
| Divisions: | General |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 24 Sep 2012 05:04 |
| Last Modified: | 24 Sep 2012 05:05 |
| Official URL: | http://dx.doi.org/10.1007/s10658-012-0050-1 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/8042 |
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