The yield and disease patterns in a black pod resistance trial in Ghana
Data on the period of harvest and disease incidence in a black pod resistance trial in Ghana showed that there was no advantage for any cross to bear the bulk of its crop in either the minor (April-August) or the main (September-March) season so as to escape infection. The degree of disease incidence for any of the cropping periods examined was directly related to the duration (length) of the period. Since 66.6-88.8 per cent of the annual crop was harvested between June and November, and 40.9-62.3 per cent was diseased, it is suggested that disease incidence in this period can be used as a fair measure of the annual black pod incidence; in addition, the cost of chemical control of the disease in Ghana can be based on this period since a significant reduction of the disease in this period will lead to a corresponding reduction in the annual disease incidence. Yield pattern affected the availability of inoculum
| Main Author: | |
|---|---|
| Format: | biblioteca |
| Published: |
1973
|
| Subjects: | THEOBROMA CACAO, PHYTOPHTHORA PALMIVORA, PODREDUMBRES, RESISTENCIA A LA ENFERMEDAD, PERDIDAS DE LA COSECHA, ENFERMEDADES FUNGOSAS, INOCULACION, GHANA, |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Data on the period of harvest and disease incidence in a black pod resistance trial in Ghana showed that there was no advantage for any cross to bear the bulk of its crop in either the minor (April-August) or the main (September-March) season so as to escape infection. The degree of disease incidence for any of the cropping periods examined was directly related to the duration (length) of the period. Since 66.6-88.8 per cent of the annual crop was harvested between June and November, and 40.9-62.3 per cent was diseased, it is suggested that disease incidence in this period can be used as a fair measure of the annual black pod incidence; in addition, the cost of chemical control of the disease in Ghana can be based on this period since a significant reduction of the disease in this period will lead to a corresponding reduction in the annual disease incidence. Yield pattern affected the availability of inoculum |
|---|