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| Titel: |
Quantitative Effects of Early and Late Blights on Tomato Yields in Cameroon |
| Auteur: |
Fontem, DA. |
| Verschenen in: |
Tropicultura |
| Paginering: | Jaargang 21 (2003) nr. 1 pagina's 36-41 |
| Jaar: |
2003 |
| Inhoud: |
Early blight caused by Alternaria solani and late blight caused by Phytophthora infestans are the major diseases of tomato (Lycopersicon esculentum) in Cameroon. The effect of both diseases on fruit yield was evaluated during the 1995 growing season in Dschang, Cameroon.Ten varieties were planted in the first trial (March-July) and nine in the second (July- November). In both trials, plots were sprayed weekly with Ridomil Plus (2.0 kg/ha) before flowering and with maneb (1.6 kg/ha) after flowering. Early blight was more severe in the early part of the first trial, while late blight caused most damage during the second. Marketable yields varied according to variety. High yields in sprayed plots were obtained in Dona F1 (61.63 t/ha) and Heinz 1370 (68.24 t/ha) during the first trial, and in Fline (58.35 t/ha), Mecline (64.25 t/ha), and Moboline (55.16 t/ha) during the second trial. Percent fruit infection in sprayed plots caused by both diseases varied according to variety from 12 to 65% in the first season and from 14 to 52% in the second, while losses in marketable yields for both blights were as high as 100% in unsprayed plots. |
| Uitgever: |
Agri-overseas (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 11 gevonden artikelen
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