ISHS Acta Horticulturae 735: I International Guava Symposium
CURRENT SCENARIO OF GUAVA DISEASES IN INDIA AND THEIR INTEGRATED MANAGEMENT |
| Authors: | O. Prakash, B.K. Pandey |
| Keywords: | diseases scenario, management |
| Abstract:
Guava (Psidium guajava L.) is native to South America and the West Indies but it is also grown other parts of the tropics and subtropics including India where it is considered to be important hardy crop grown in neglected soil. Guava is prone to attack by a range of diseases from root to the crown and fruits due to wide range of variation in the climatic conditions. A number of plant pathogens of fungal origin have been reported including bacterial, algal and nematodes, are found to cause various types of diseases. Under pre-post harvest, pathogens cause various types of manifestations viz., wilt, anthracnose, rots, rust, scab, red rust, sooty mould, styler end rot, canker, die back, leaf spot and damping off. Botryophaeria rot and Hyaloderma leaf spot causing serious problems in South India, are being reported for the first time. Guava production is most successful in regions where flowering and fruiting occur in the dry season, which does not favour anthracnose, styler end rot. Incidence of disease depended upon the extent of fruit senescence and the amount often doubled two to three days after ripening. Periodic sampling of diseased tissue and observations on senescent fruits served to verify pathogen identity and incidence. Diseases are numerous and control begins in the orchard with preventive measures against various diseases. Protective sprays against anthracnose, styler end rot and various types of rots beside epidemiological studies and spray forecasting can greatly enhance the performance of orchard sprays. Hence, preharvest treatment with safer chemicals including IPM is an appropriate strategy in situation where considerable harvest injury losses are anticipated. | |
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