Backman, P.A. and Crawford, M.A. (1984) Relationship Between Yield Loss and severity of Early and Late Leafspot Diseases of Peanut. Phytopathology, 74. pp. 1101-1103.
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Abstract
Levels of groundnut leafspot ( Cercospora arachidicola [ Mycosphaerella arachidis] or Cercosporidium personatum [ M. berkeleyi]) were adjusted by applying fungicides of differing effectiveness. Disease levels 2-3 wk before harvest were related to dry pod yield. In studies conducted for 4 yr, data indicated that for Florunner groundnuts with a yield potential of c. 4400 kg/ha, yield was reduced by an av. 57 kg/ha for each percent of defoliation. Groundnuts could tolerate low levels of infection, but all levels of defoliation resulted in yield loss. No difference in loss-producing potential (yield loss/unit of disease) was observed between the 2 spp. since similar levels of disease caused similar losses. However, slopes of regression lines did differ significantly when years were compared.
| Item Type: | Article |
|---|---|
| Additional Information: | SNNigam Collection |
| Author Affiliation: | Department of Botany, Plant Pathology, and Microbiology, Alabama Agricultural Experiment Station, Auburn University 36849. |
| Subjects: | Plant Protection |
| Divisions: | Groundnut |
| Depositing User: | Mr Balakrishna Garadasu |
| Date Deposited: | 14 May 2013 04:41 |
| Last Modified: | 14 May 2013 04:41 |
| Official URL: | http://dx.doi.org/10.1094/Phyto-74-1101 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10441 |
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