Effect of copper fungicides, removal of diseases part and Trichoderma spp applications in the cocoa diseases incidence in Juanjui, Peru
2006
Enrique, Arevalo G. | Luis, Zuniga C. | Esteban, Altamirano F., Instituto de Cultivos Tropicales, ICT-NAS/CICAD-OEA/USDA-ARS, Bda. del Shilcayo Tarapoto, San Martin (Peru) | Tomas, Melgarejo G. (eds.), Universidad Nacional Agraria la Molina, Lima (Peru)
The effect of fungicides not systemic was studied against the "moniliasis" and witche's broom of cocoa, the controls were cultural practices (removal), a treatment with antagonist (Trichoderma spp) and without application. The field test was executed to the north west of Peru inside of a commercial cocoa plantation during 2001-2002. No treatment probed was efficient against witch's broom. The cuprous oxide and the copper metallic + propineb decreased significantly the moniliasis development rate and the area under the disease progress curve (AUDPC). The treatments with fungicides increased the number of healthy pods and the yield in 30.6% and 25.5% respectively; while the biweekly pod removal and the antagonist application increased of 18.7% and 24.1%. The copper oxychloride and (copper metallic + mancozeb) have the more high cost. The treatments of (copper metallic + propineb) and (removal + Trichoderma spp), increased the yields of dry seed in 32.2% improved the net income in 17.4% and 31.2% respectively.
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