Laboratory and Field Evaluation of Beauveria bassiana Against Sugarcane Stalkborers (Lepidoptera: Pyralidae) in the Lower Rio Grande Valley of Texas
Of ≈18,200 ha planted to sugarcane in south Texas, only ≈80 ha (
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| Veröffentlicht in: | Journal of economic entomology 2000-02, Vol.93 (1), p.54-59 |
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| container_title | Journal of economic entomology |
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| creator | Legaspi, Jesusa Crisostomo Poprawski, T. J. Legaspi, B. C. |
| description | Of ≈18,200 ha planted to sugarcane in south Texas, only ≈80 ha ( |
| doi_str_mv | 10.1603/0022-0493-93.1.54 |
| format | Article |
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J. ; Legaspi, B. C.</creator><creatorcontrib>Legaspi, Jesusa Crisostomo ; Poprawski, T. J. ; Legaspi, B. C.</creatorcontrib><description>Of ≈18,200 ha planted to sugarcane in south Texas, only ≈80 ha (<0.5%) are treated with insecticides because this type of control is widely regarded as ineffective against stalkboring pyralids, the key pests of sugarcane. Therefore, nonchemical control measures, such as resistant varieties and biological controls, must be evaluated to mitigate the losses caused by stalkborers. We performed laboratory and field evaluations on the use of Beauveria bassiana (Balsamo) Vuillemin (Deuteromycotina: Hyphomycetes) (strain GHA) against the Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Pyralidae), which causes damage in south Texas estimated at between $10 and $20 million annually. We also performed bioassays against the sugarcane borer, Diatraea saccharalis (F.) (Pyralidae), the key pest in other sugarcane growing areas. In the bioassays, E. loftini was substantially more susceptible to B. bassiana than D. saccharalis, based on both 5-d LD50 values and survival times. A commercial oil-based formulation of B. bassiana was evaluated in the field using the following treatments: oil alone (control), B. bassiana + oil, and B. bassiana + Silwet L-77 carrier at an application rate of 5 × 1013 spores per hectare. Neither numbers of E. loftini per stalk, nor stalk damage (≈20% bored internodes) were significantly affected by treatment. The application of B. bassiana + Silwet significantly affected the numbers of internodes showing high damage, but not those with low or medium damage. Analysis of yield data and juice quality showed no significant treatment effects. We conclude that the application of Beauveria + Silwet offers the best chances for reducing damage caused by E. loftini of those treatments tested. However, reductions in insect incidence or damage did not result in measurable increases in yield or sugar quality, probably because of insufficient coverage. Effective control of stalkboring pyralids in sugarcane using B. bassiana will likely require improvements in delivery technology.</description><identifier>ISSN: 0022-0493</identifier><identifier>EISSN: 1938-291X</identifier><identifier>EISSN: 0022-0493</identifier><identifier>DOI: 10.1603/0022-0493-93.1.54</identifier><identifier>PMID: 14658512</identifier><identifier>CODEN: JEENAI</identifier><language>eng</language><publisher>Lanham, MD: Entomological Society of America</publisher><subject>Animals ; Beauveria bassiana ; Biological and medical sciences ; Biological and Microbial Control ; Biological control ; Control ; Diatraea saccharalis ; Eoreuma loftini ; Fundamental and applied biological sciences. Psychology ; Hypocreales - physiology ; Larva ; Lepidoptera ; Pest Control, Biological ; Phytopathology. Animal pests. Plant and forest protection ; Protozoa. 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J.</creatorcontrib><creatorcontrib>Legaspi, B. C.</creatorcontrib><title>Laboratory and Field Evaluation of Beauveria bassiana Against Sugarcane Stalkborers (Lepidoptera: Pyralidae) in the Lower Rio Grande Valley of Texas</title><title>Journal of economic entomology</title><addtitle>J Econ Entomol</addtitle><description>Of ≈18,200 ha planted to sugarcane in south Texas, only ≈80 ha (<0.5%) are treated with insecticides because this type of control is widely regarded as ineffective against stalkboring pyralids, the key pests of sugarcane. Therefore, nonchemical control measures, such as resistant varieties and biological controls, must be evaluated to mitigate the losses caused by stalkborers. We performed laboratory and field evaluations on the use of Beauveria bassiana (Balsamo) Vuillemin (Deuteromycotina: Hyphomycetes) (strain GHA) against the Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Pyralidae), which causes damage in south Texas estimated at between $10 and $20 million annually. We also performed bioassays against the sugarcane borer, Diatraea saccharalis (F.) (Pyralidae), the key pest in other sugarcane growing areas. In the bioassays, E. loftini was substantially more susceptible to B. bassiana than D. saccharalis, based on both 5-d LD50 values and survival times. A commercial oil-based formulation of B. bassiana was evaluated in the field using the following treatments: oil alone (control), B. bassiana + oil, and B. bassiana + Silwet L-77 carrier at an application rate of 5 × 1013 spores per hectare. Neither numbers of E. loftini per stalk, nor stalk damage (≈20% bored internodes) were significantly affected by treatment. The application of B. bassiana + Silwet significantly affected the numbers of internodes showing high damage, but not those with low or medium damage. Analysis of yield data and juice quality showed no significant treatment effects. We conclude that the application of Beauveria + Silwet offers the best chances for reducing damage caused by E. loftini of those treatments tested. However, reductions in insect incidence or damage did not result in measurable increases in yield or sugar quality, probably because of insufficient coverage. Effective control of stalkboring pyralids in sugarcane using B. bassiana will likely require improvements in delivery technology.</description><subject>Animals</subject><subject>Beauveria bassiana</subject><subject>Biological and medical sciences</subject><subject>Biological and Microbial Control</subject><subject>Biological control</subject><subject>Control</subject><subject>Diatraea saccharalis</subject><subject>Eoreuma loftini</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hypocreales - physiology</subject><subject>Larva</subject><subject>Lepidoptera</subject><subject>Pest Control, Biological</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>Protozoa. Invertebrates</subject><subject>Saccharum</subject><subject>Spores, Fungal - physiology</subject><subject>sugarcane</subject><subject>Texas</subject><issn>0022-0493</issn><issn>1938-291X</issn><issn>0022-0493</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkcFu1DAQhi0EokvhAbggHxCCQ7aeOHY2vZWqLUiRQLQgbtbEmRSDN17spLDvwQPj1a7oFWmkOcw3_6_5h7HnIJaghTwRoiwLUTWyaOQSlqp6wBbQyFVRNvD1IVv8mx-xJyl9FwJ0CeIxO4JKq5WCcsH-tNiFiFOIW45jzy8d-Z5f3KGfcXJh5GHgbwnnO4oOeYcpORyRn92iG9PEr-dbjBZH4tcT-h9ZimLir1vauD5sJop4yj9uI3rXI73hbuTTN-Jt-EWRf3KBX8VsSvwLek_bndcN_cb0lD0a0Cd6dujH7PPlxc35u6L9cPX-_KwtOqn1VNTC1pjPoAqg6UpEGsqhJuigHJrBoq4rrTX1oHQvhlJK1aGwKym07GtrrTxmr_a6mxh-zpQms3bJkvf5oDAnUwulQK0gg7AHbQwpRRrMJro1xq0BYXavMLuozS5qkwuMqvLOi4P43K2pv984ZJ-BlwcAk0U_5CisS_ecbGQNMmMne6xzIYz0H85_ASbLoKM</recordid><startdate>20000201</startdate><enddate>20000201</enddate><creator>Legaspi, Jesusa Crisostomo</creator><creator>Poprawski, T. J.</creator><creator>Legaspi, B. C.</creator><general>Entomological Society of America</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20000201</creationdate><title>Laboratory and Field Evaluation of Beauveria bassiana Against Sugarcane Stalkborers (Lepidoptera: Pyralidae) in the Lower Rio Grande Valley of Texas</title><author>Legaspi, Jesusa Crisostomo ; Poprawski, T. J. ; Legaspi, B. C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b366t-70c7a851e4119b2aaef2f7e1b12f9fca674666ed156d0f2335ba0c83063d7ccc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Animals</topic><topic>Beauveria bassiana</topic><topic>Biological and medical sciences</topic><topic>Biological and Microbial Control</topic><topic>Biological control</topic><topic>Control</topic><topic>Diatraea saccharalis</topic><topic>Eoreuma loftini</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Hypocreales - physiology</topic><topic>Larva</topic><topic>Lepidoptera</topic><topic>Pest Control, Biological</topic><topic>Phytopathology. Animal pests. Plant and forest protection</topic><topic>Protozoa. Invertebrates</topic><topic>Saccharum</topic><topic>Spores, Fungal - physiology</topic><topic>sugarcane</topic><topic>Texas</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Legaspi, Jesusa Crisostomo</creatorcontrib><creatorcontrib>Poprawski, T. J.</creatorcontrib><creatorcontrib>Legaspi, B. C.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of economic entomology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Legaspi, Jesusa Crisostomo</au><au>Poprawski, T. J.</au><au>Legaspi, B. C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Laboratory and Field Evaluation of Beauveria bassiana Against Sugarcane Stalkborers (Lepidoptera: Pyralidae) in the Lower Rio Grande Valley of Texas</atitle><jtitle>Journal of economic entomology</jtitle><addtitle>J Econ Entomol</addtitle><date>2000-02-01</date><risdate>2000</risdate><volume>93</volume><issue>1</issue><spage>54</spage><epage>59</epage><pages>54-59</pages><issn>0022-0493</issn><eissn>1938-291X</eissn><eissn>0022-0493</eissn><coden>JEENAI</coden><abstract>Of ≈18,200 ha planted to sugarcane in south Texas, only ≈80 ha (<0.5%) are treated with insecticides because this type of control is widely regarded as ineffective against stalkboring pyralids, the key pests of sugarcane. Therefore, nonchemical control measures, such as resistant varieties and biological controls, must be evaluated to mitigate the losses caused by stalkborers. We performed laboratory and field evaluations on the use of Beauveria bassiana (Balsamo) Vuillemin (Deuteromycotina: Hyphomycetes) (strain GHA) against the Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Pyralidae), which causes damage in south Texas estimated at between $10 and $20 million annually. We also performed bioassays against the sugarcane borer, Diatraea saccharalis (F.) (Pyralidae), the key pest in other sugarcane growing areas. In the bioassays, E. loftini was substantially more susceptible to B. bassiana than D. saccharalis, based on both 5-d LD50 values and survival times. A commercial oil-based formulation of B. bassiana was evaluated in the field using the following treatments: oil alone (control), B. bassiana + oil, and B. bassiana + Silwet L-77 carrier at an application rate of 5 × 1013 spores per hectare. Neither numbers of E. loftini per stalk, nor stalk damage (≈20% bored internodes) were significantly affected by treatment. The application of B. bassiana + Silwet significantly affected the numbers of internodes showing high damage, but not those with low or medium damage. Analysis of yield data and juice quality showed no significant treatment effects. We conclude that the application of Beauveria + Silwet offers the best chances for reducing damage caused by E. loftini of those treatments tested. However, reductions in insect incidence or damage did not result in measurable increases in yield or sugar quality, probably because of insufficient coverage. Effective control of stalkboring pyralids in sugarcane using B. bassiana will likely require improvements in delivery technology.</abstract><cop>Lanham, MD</cop><pub>Entomological Society of America</pub><pmid>14658512</pmid><doi>10.1603/0022-0493-93.1.54</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0022-0493 |
| ispartof | Journal of economic entomology, 2000-02, Vol.93 (1), p.54-59 |
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| source | Oxford University Press Journals All Titles (1996-Current); MEDLINE; BioOne Complete |
| subjects | Animals Beauveria bassiana Biological and medical sciences Biological and Microbial Control Biological control Control Diatraea saccharalis Eoreuma loftini Fundamental and applied biological sciences. Psychology Hypocreales - physiology Larva Lepidoptera Pest Control, Biological Phytopathology. Animal pests. Plant and forest protection Protozoa. Invertebrates Saccharum Spores, Fungal - physiology sugarcane Texas |
| title | Laboratory and Field Evaluation of Beauveria bassiana Against Sugarcane Stalkborers (Lepidoptera: Pyralidae) in the Lower Rio Grande Valley of Texas |
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