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- Title
ALTERNATIVAS DE CONTROLE DE Chalara paradoxa NA PÓS-COLHEITA DE ABACAXI.
- Authors
DE BRITO, NOELMA MIRANDA; NEVES, CYNTHIA MARIA DE LYRA; RIBEIRO, VALéRIA VERAS; DO NASCIMENTO, LUCIANA CORDEIRO; ARAÚJO, EGBERTO
- Abstract
Black rot of pineapple, caused by Chalara paradoxa, is a postharvest disease responsible by high losses on fruits destined to the fresh market and to the processing industry. The work had as objective to evaluate influence of naturals extracts, fungicide and resistance inducer for C. paradoxa control, isolated from pineapple fruits. It was observed action of resistance inducer acibenzolar-S-metil, fungicide mancozeb and the natural extracts of Anadenanthera colubrine, Anacardium occidentale, Ocimum minimum and Momordica charantia, on inhibition of C. paradoxa growth in vitro. It was transferred 25 μL of each treatment for a hole on center of Petri dishes with PDA and was placed a fungus disk on it. Evaluations were carried out every 24 hours, for seven days. For evaluation of conidia production, 20 mL of distilled sterilized water were added in each Petri dish with fungus colony for obtaining conidia suspension and, concentration was verified in Neubauer chamber. Thirty five pineapple fruits, var. Smooth Cayenne were inoculated with C. paradoxa and incubated in humid chamber for 24 hours. The experimental design was completely randomized with averages compared by Tukey test at 5% of probability. The treatments were able to reduce mycelial growth and sporulation under the conditions studied. The minor effects of the disease on the fruits of pineapple were observed with the Ocimum minimum extract and mancozeb. The fungicide mancozeb and Ocimum minimum extract influenced the control of C. paradoxa.
- Subjects
CHALARA; PINEAPPLE; DISEASE resistance of plants; FUNGICIDE resistance; POSTHARVEST diseases; BASIL; BLACK rot
- Publication
Revista Caatinga, 2011, Vol 24, Issue 2, p52
- ISSN
0100-316X
- Publication type
Article