Bibliographic citations
Merchán, J., (2017). Eficacia de biocontroladores y fungicidas para el control de Phythium sp. en crisantemo (Chrysanthemum sp.) [Tesis, Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/3074
Merchán, J., Eficacia de biocontroladores y fungicidas para el control de Phythium sp. en crisantemo (Chrysanthemum sp.) [Tesis]. : Universidad Nacional Agraria La Molina; 2017. https://hdl.handle.net/20.500.12996/3074
@mastersthesis{renati/246240,
title = "Eficacia de biocontroladores y fungicidas para el control de Phythium sp. en crisantemo (Chrysanthemum sp.)",
author = "Merchán Gaitán, Julia Bibiana",
publisher = "Universidad Nacional Agraria La Molina",
year = "2017"
}
Fungal diseases such as seedling drowning caused by Pythium sp. are the major cause of losses in chrysanthemum crop. An investigation was conducted with the purpose was to evaluate the optimal dose of biocontrol agents and chemical fungicides and to establish the better dose for Pythium control. After obtaining pure isolation in laboratory test medium made poisoned using biological and chemical products in Middle CMA. Nine treatments with five replicates were applied and at the stage of greenhouse ten treatments with five repetitions were made. It was performed a comparison test with orthogonal contrasts, analysis of variance with 95% of adjust, similarly a Tukey test (P0, 05) performed a DCA was used. The results obtained in the laboratory phase of mycelial growth showed significant differences, the inoculated control (T2) 36.43cm had the highest mycelial growth of Pythium sp; T3 (Metalaxil-M y Clorotalonil), T4 (Metalaxil-M y Clorotalonil increased el 50%), T5 (Azoxystrobin) and T6 (Azoxystrobin increased el 50%) treatments showed 100% control because there was no growth of Pythium sp. In the greenhouse, growing chrysanthemum presented the best results in T8 with 9.33% incidence and severity the most effective treatment was the T7 (T. harzianum commercial dose) with 4.9% (T. harzianum increased 50% dose). The evaluation of the incidence with orthogonal contrasts showed significant differences between treatments with application (16%) without application (32.6%) and comparing the severity orthogonal contrasts all had significant differences. As for the agronomic characteristics of the chrysanthemum plant, the T8 (T. harzianum dose 0.01g / 201mL) was shown to be the best treatment in average plant height, root fresh weight, dry root mass, fresh air mass, dry air mass, number of buttons, floral diameter and mass
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