Sugarcane Planting Date Impact on Fall and Spring Sugarcane Borer (Lepidoptera: Crambidae) Infestations

In a two-year field study, sugarcane was planted on 4 dates ranging from the first week of Aug to the third week of Nov, reproducing sugarcane phenologies associated with planting and harvesting operations in Louisiana. Sugarcane planted in early Aug offered an extended period of plant availability...

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Bibliographic Details
Published in:The Florida entomologist 2011-06, Vol.94 (2), p.242-252
Main Authors: Beuzelin, J. M, Mészáros, A, Akbar, W, Reagan, T. E
Format: Article
Language:English
Subjects:
Borers (Insects)
Control
Crambidae
Crop harvesting
Crop management
cultivars
cultural practices
Diatraea saccharalis
Diatraea saccharalis (F.)
Diseases and pests
harvesting
Infestation
Insect larvae
Lepidoptera
Methods
Overwintering
Plant interaction
Planting
Planting (Plant culture)
Planting date
Plants
Research Papers
spring
Sugar cane
Sugarcane
sugarcane IPM
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Summary:In a two-year field study, sugarcane was planted on 4 dates ranging from the first week of Aug to the third week of Nov, reproducing sugarcane phenologies associated with planting and harvesting operations in Louisiana. Sugarcane planted in early Aug offered an extended period of plant availability for sugarcane borer, Diatraea saccharalis (F.), infestations during the fall. Periodic sampling throughout the fall showed that early Aug plantings had higher (P < 0.05) D. saccharalis-caused deadheart densities than later planted sugarcane. Destructive sampling conducted in early Oct showed that Aug plantings harbored greater deadheart densities (P < 0.05 in fall 2007) and D. saccharalis infestations (P < 0.05 in fall 2006 and 2007) than Sep plantings. Data from this study suggest a potential for increased D. saccharalis overwintering populations in early plantings associated with greater infestations during the fall. However, differences in deadhearts and D. saccharalis infestations in deadhearts were not detected (P > 0.05) during the spring. Three commercial sugarcane cultivare (‘L 99-226’, ‘L 97-128’, ‘HoCP 95-988’) were studied. Differences in D. saccharalis injury or infestations as affected by cultivar were detected (P < 0.05) only in early Oct 2007 when ‘HoCP 95-988” harbored 2.3-fold greater infestations than ‘L 99-226’.
ISSN:0015-4040
1938-5102
DOI:10.1653/024.094.0218