Los fungicidas sistémicos en la prevención y control de la roya del cafeto hemileia vastatrix berk. & br en el cantón Las Lajas provincia de El Oro
This study of systemic fungicides in the prevention and control of the Roya of coffee (Hemileia vastatrix berk. & Br.), was performed cantón las lajas, provincia de el Oro. we proposing the following objectives: 1 Determine the optimal dosage of systemic fungicides tested in the trial for the co...
שמור ב:
| מחבר ראשי: | |
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| פורמט: | bachelorThesis |
| שפה: | spa |
| יצא לאור: |
2014
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| נושאים: | |
| גישה מקוונת: | http://repositorio.utmachala.edu.ec/handle/48000/1052 |
| תגים: |
הוספת תג
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הוספת תג | סיכום: | This study of systemic fungicides in the prevention and control of the Roya of coffee (Hemileia vastatrix berk. & Br.), was performed cantón las lajas, provincia de el Oro. we proposing the following objectives: 1 Determine the optimal dosage of systemic fungicides tested in the trial for the control of the Roya. 2. To compare the severity and incidence of the Roya coffee for the treatment. The treatments investigated were: T1 Nomad 300cc/ha; T2 Nomad 400cc/ha; T3 Nomad 500cc/ha; T4 Alto 100 150cc/ha; T5 Alto 100 250cc/ha; T6 Alto 100 350cc/ha; T7 Amistar Top 400cc/ha; T8 Amistar Top 500cc/ha; T9 Amistar Top 600cc/ha; T10 Testigo. The 10 treatments distributed in a randomized block design with three replications, totalling 30 each a experimental units of 40 plants , covering an area 5626, 41 m2 . 6 monthly assessments were performed from zero days to 150 days, 2 applications of fungicides were made at a frequency of 6 weeks. The variables were evaluated; Incidence of rust severity, Efficiency Abbott, Yield (kg of coffee / ha, 100 ripe fruit weight, fruit vain. Comparisons of means were performed using the Duncan test 5% at 150 days after application, the lowest incidence was obtained by treating 6 (100 high) doses of 350 cc / ha from 13% with a severity 1.8 pustules / leaf and the higher incidence of roya was obtained with the control of a 94.6% showing a severity of 6.9 pustules / ha. Reduced incidence and severity of rust achieved with fungicides, is less than that recorded with the untreated control. The positive effect of rust control using fungicides is found in increasing coffee yields. In Cyproconazol (high 100) fungicide dose of 350 cc / ha relative performance 169% was obtained; that is 69% above the control. Fungicides, El Alto 100 are still the best alternative to chemical control of roya. |
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