5) How do farmers control and manage PRSV?
The control methods used by farmers to help manage PRSV include (Swain and Powell, 2001 and references therein):
- Delayed introduction through quarantine
- Burning all infected plants and nearby ground plants and destroying all papayas within a
large surrounding area once the virus appears
- Using PRSV-tolerant varieties, pesticides, and anti-aphid netting for the first three
months, when available
- Pruning young plants heavily to delay flowering and to build plant strength
- Using heavy and frequent anti-aphid sprays for the first year to minimize exposure
- Introducing mild strains of the PRSV virus into plants to prevent the symptoms of more
severe strains (cross-protection)
Since the outbreak of the disease in the Philippines, several of these measures have been undertaken, including a quarantine to restrict the movement of papaya from the island of Luzon to the rest of the country. Despite this, PRSV infection has been reported recently in the Visayas and Mindanao, potentially threatening the rest of the major papaya production areas of the Philippines (Eusebio et al, 1997; Herradura et al., 2001).
5) How do farmers control and manage PRSV?The control methods used by farmers to help manage PRSV include (Swain and Powell, 2001 and references therein):- Delayed introduction through quarantine- Burning all infected plants and nearby ground plants and destroying all papayas within alarge surrounding area once the virus appears- Using PRSV-tolerant varieties, pesticides, and anti-aphid netting for the first threemonths, when available- Pruning young plants heavily to delay flowering and to build plant strength- Using heavy and frequent anti-aphid sprays for the first year to minimize exposure- Introducing mild strains of the PRSV virus into plants to prevent the symptoms of moresevere strains (cross-protection)Since the outbreak of the disease in the Philippines, several of these measures have been undertaken, including a quarantine to restrict the movement of papaya from the island of Luzon to the rest of the country. Despite this, PRSV infection has been reported recently in the Visayas and Mindanao, potentially threatening the rest of the major papaya production areas of the Philippines (Eusebio et al, 1997; Herradura et al., 2001).
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