Control químico y epidemiología de la mancha foliar del chile habanero (Capsicum chinense jacq.) en Yucatán, México
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Abstract
Alternaria solani Jones & Grout was identified as leave strain agent in hot pepper (Capsicum chinense Jacq.). In order to control it, contact fungicides captan, famoxodona+mancozeb and clorotalonil, and systemic benomil, carbendazim and azoxystrobin with a control not applied were tested. Disease intensity was measured through epidemiological parameters, fruits production, fruits weight, dried matter and plant height were also determined. Curves elaboration permitted the adjustment to Weibull model and lower perceptible infection rates in the famoxadona+mancozeb and azoxystrobin treatments with 0.007268 and 0.006159 unit/day respectively were estimated through the b-1 inverse parameter. The same treatments permitted the lower AUDPC with 308.1 and 242.5 %/day, respectively. In contrast, clorotalonil showed a Yfinal with 20.75%, this permitted the lowest incidence at the end of the culture. Treatments that obtained the higher amount and weight of fruits per experimental unit were those that inhibit in a higher percentage the disease development.
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