| Autor: |
G Martijn Ten Hoopen, Kuate, Jean, Mbarga, Joseph Bienvenu, Atangana, Jean Bertrand, Tertulaine Tchana, Bateman, Roy, Hebbar, Prakash, Cilas, Christian, Tondje, Pierre |
| Jazyk: |
angličtina |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
16th International Cocoa Research Conference. Proceedings : towards rational cocoa production and efficient use ofr a sustainable world cocoa economy |
| Popis: |
Control of Phytophthora megakarya, the causal agent of cocoa black pod in Cameroon is commonly obtained by fungicide spraying of either copper compounds or a mixture of metalaxyl-M with copper compounds. Research on biocontrol of P. megakarya has identified an isolate of Trichoderma asperellum, PR11 as a promising biocontrol agent (BCA) of P. megakarya. The objective of this study was to test rational pesticide and integrated control approaches using fungicide and fungicide-BCA combinations. Field trials were carried out over a period of two years (2007-08). Two trial sites were selected for both years. At each site a randomized complete block design was used with three replicate plots per treatment. Plots were sprayed in three-week intervals using motorized mistblowers. Treatments were i) control (water only), ii) T. asperellum PR11 formulated with starch, iii) T. asperellum followed by copper hydroxide (Kocide), and iv) Ridomil gold, a mixture of metalaxyl-M and cuprous-oxide, followed by Kocide. The second year a fifth treatment was added, v) Banko plus (Chlorothalonil with Carbendazim) followed by Kocide, whereas the Kocide/Ridomil treatment was changed to a Ridomil only treatment and the Kocide-T. asperellum treatment was changed to T. asperellum formulated with clay. The number of rotten and ripe pods was recorded weekly. There were marked and significant differences between sites (P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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