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The influence of crop management on banana weevil, Cosmopolites sordidus (Coleoptera: Curculionidae) populations and yield of highland cooking banana (cv. Atwalira) in Uganda.
Bull Entomol Res. 2002 Oct; 92(5):413-21.BE

Abstract

A field study was undertaken in Uganda using highland cooking banana (cv. Atwalira) to test the hypothesis that bananas grown under stressed conditions are more susceptible to attack by Cosmopolites sordidus (Germar). Four banana treatments were employed to create different levels of host-plant vitality: (1) high stress: intercrop with finger millet; (2) moderate stress: monoculture without soil amendments; (3) low stress: monoculture with manure; (4) high vigour: monoculture with continuous mulch and manure. Adult C. sordidus were released at the base of banana mats 11 months after planting and populations were monitored for three years using mark and recapture methods. Cosmopolites sordidus density was greatest in the mulched plots which may have reflected increased longevity and/or longer tenure time in moist soils. Lowest C. sordidus numbers were found in intercropped banana. Damage, estimated as percentage corm tissue consumed by larvae, was similar among treatments. However, the total amount of tissue consumed was greater in mulched banana than in other systems. Plants supporting the heaviest levels of C. sordidus damage displayed bunch size reductions of 40-55%. Banana yield losses ranged from 14-20% per plot with similar levels in the intercropped and mulched systems. Yield reductions, reported as t ha-1, were twice as high in the mulched system as in the intercrop. The results from this study indicate that C. sordidus problems are not confined to stressed banana systems or those with low levels of management, but that the weevil can also attain pest status in well-managed and productive banana stands.

Authors+Show Affiliations

Rukazambuga ND
IITA/ESARC, PO Box 7878, Kampala, Uganda.
Gold CS
No affiliation info available
Gowen SR
No affiliation info available
Ragama P
No affiliation info available

MeSH

AnimalsColeopteraCrops, AgriculturalInsect ControlMusaPopulation DensityUganda

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12241566

Citation

Rukazambuga, N D T M., et al. "The Influence of Crop Management On Banana Weevil, Cosmopolites Sordidus (Coleoptera: Curculionidae) Populations and Yield of Highland Cooking Banana (cv. Atwalira) in Uganda." Bulletin of Entomological Research, vol. 92, no. 5, 2002, pp. 413-21.
Rukazambuga ND, Gold CS, Gowen SR, et al. The influence of crop management on banana weevil, Cosmopolites sordidus (Coleoptera: Curculionidae) populations and yield of highland cooking banana (cv. Atwalira) in Uganda. Bull Entomol Res. 2002;92(5):413-21.
Rukazambuga, N. D., Gold, C. S., Gowen, S. R., & Ragama, P. (2002). The influence of crop management on banana weevil, Cosmopolites sordidus (Coleoptera: Curculionidae) populations and yield of highland cooking banana (cv. Atwalira) in Uganda. Bulletin of Entomological Research, 92(5), 413-21.
Rukazambuga ND, et al. The Influence of Crop Management On Banana Weevil, Cosmopolites Sordidus (Coleoptera: Curculionidae) Populations and Yield of Highland Cooking Banana (cv. Atwalira) in Uganda. Bull Entomol Res. 2002;92(5):413-21. PubMed PMID: 12241566.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The influence of crop management on banana weevil, Cosmopolites sordidus (Coleoptera: Curculionidae) populations and yield of highland cooking banana (cv. Atwalira) in Uganda. AU - Rukazambuga,N D T M, AU - Gold,C S, AU - Gowen,S R, AU - Ragama,P, PY - 2002/9/21/pubmed PY - 2002/12/4/medline PY - 2002/9/21/entrez SP - 413 EP - 21 JF - Bulletin of entomological research JO - Bull Entomol Res VL - 92 IS - 5 N2 - A field study was undertaken in Uganda using highland cooking banana (cv. Atwalira) to test the hypothesis that bananas grown under stressed conditions are more susceptible to attack by Cosmopolites sordidus (Germar). Four banana treatments were employed to create different levels of host-plant vitality: (1) high stress: intercrop with finger millet; (2) moderate stress: monoculture without soil amendments; (3) low stress: monoculture with manure; (4) high vigour: monoculture with continuous mulch and manure. Adult C. sordidus were released at the base of banana mats 11 months after planting and populations were monitored for three years using mark and recapture methods. Cosmopolites sordidus density was greatest in the mulched plots which may have reflected increased longevity and/or longer tenure time in moist soils. Lowest C. sordidus numbers were found in intercropped banana. Damage, estimated as percentage corm tissue consumed by larvae, was similar among treatments. However, the total amount of tissue consumed was greater in mulched banana than in other systems. Plants supporting the heaviest levels of C. sordidus damage displayed bunch size reductions of 40-55%. Banana yield losses ranged from 14-20% per plot with similar levels in the intercropped and mulched systems. Yield reductions, reported as t ha-1, were twice as high in the mulched system as in the intercrop. The results from this study indicate that C. sordidus problems are not confined to stressed banana systems or those with low levels of management, but that the weevil can also attain pest status in well-managed and productive banana stands. SN - 0007-4853 UR - https://www.unboundmedicine.com/medline/citation/12241566/The_influence_of_crop_management_on_banana_weevil_Cosmopolites_sordidus__Coleoptera:_Curculionidae__populations_and_yield_of_highland_cooking_banana__cv__Atwalira__in_Uganda_ DB - PRIME DP - Unbound Medicine ER -