Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles
Lethality of rice husk ash (RHA) and a diatomaceous earth (SilicoSec) (DE) to adults of Sitophilus zeamais, S. granarius, Lasioderma serricorne and Callosobruchus maculatus was investigated under controlled conditions of 25 ± 2° C and 60 ± 3% relative humidity. Each product was tested at 0.05 g to 0...
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Julius Kühn-Institut
2018-11-01
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| Online Access: | https://www.openagrar.de/receive/openagrar_mods_00043128 |
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| author | Ofuya, Thomas Adler, Cornel |
| author_facet | Ofuya, Thomas Adler, Cornel |
| author_sort | Ofuya, Thomas |
| collection | DOAJ |
| description | Lethality of rice husk ash (RHA) and a diatomaceous earth (SilicoSec) (DE) to adults of Sitophilus zeamais, S. granarius, Lasioderma serricorne and Callosobruchus maculatus was investigated under controlled conditions of 25 ± 2° C and 60 ± 3% relative humidity. Each product was tested at 0.05 g to 0.5 g/20 g of grain respectively in glass Petri dishes against 20 adults of each beetle. Adult mortality was observed up to 10 days post treatment. RHA/DE mixtures (1:1, 3:1 and 1:3 ratios) were also tested at 2% of grain weight. Additionally, RHA and DE were tested at low dosages (0.01 g to 0.04 g/20 g) against adults of C. maculatus alone. The DE generally produced significantly higher mortality of all the adult storage beetles and at earlier observation times, than RHA at the lower dosages (< 0.2 g). Adult mortality produced by RHA and DE in S. zeamais and S. granarius increased with increase in dosage from 0.05 g to 0.5 g. The RHA/DE mixtures generally produced similar mortality of all the adult storage beetles irrespective of post-treatment exposure time. The S. zeamais and S. granarius were generally more tolerant to the DE and RHA treatments than L. serricorne and C. maculatus. Percentage mortality of C. maculatus adults when DE was applied at low dosages (0.01 g to 0.04 g) was generally higher than RHA applied at similar dosages, up to 3 days-post treatment. All treatments produced 100% mortality of C. maculatus adults 4 days-post treatment. The data further confirm the efficacy of DE and RHA as insecticidal dusts at the dosage rate of 0.5 g or more per kg of grain. |
| first_indexed | 2024-03-08T23:41:45Z |
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| issn | 1868-9892 2199-921X |
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| last_indexed | 2024-03-08T23:41:45Z |
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| spelling | doaj.art-6a1358d580a949dfb3bfc0d48f3d33e72023-12-14T05:06:16ZdeuJulius Kühn-InstitutJulius-Kühn-Archiv1868-98922199-921X2018-11-01463282382910.5073/jka.2018.463.178Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetlesOfuya, Thomas0 Adler, Cornel1The Federal University of Technology, PMB 704, Akure, NigeriaJulius Kühn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Ecological Chemistry, Plant Analysis and Stored Product Protection, Berlin, GermanyLethality of rice husk ash (RHA) and a diatomaceous earth (SilicoSec) (DE) to adults of Sitophilus zeamais, S. granarius, Lasioderma serricorne and Callosobruchus maculatus was investigated under controlled conditions of 25 ± 2° C and 60 ± 3% relative humidity. Each product was tested at 0.05 g to 0.5 g/20 g of grain respectively in glass Petri dishes against 20 adults of each beetle. Adult mortality was observed up to 10 days post treatment. RHA/DE mixtures (1:1, 3:1 and 1:3 ratios) were also tested at 2% of grain weight. Additionally, RHA and DE were tested at low dosages (0.01 g to 0.04 g/20 g) against adults of C. maculatus alone. The DE generally produced significantly higher mortality of all the adult storage beetles and at earlier observation times, than RHA at the lower dosages (< 0.2 g). Adult mortality produced by RHA and DE in S. zeamais and S. granarius increased with increase in dosage from 0.05 g to 0.5 g. The RHA/DE mixtures generally produced similar mortality of all the adult storage beetles irrespective of post-treatment exposure time. The S. zeamais and S. granarius were generally more tolerant to the DE and RHA treatments than L. serricorne and C. maculatus. Percentage mortality of C. maculatus adults when DE was applied at low dosages (0.01 g to 0.04 g) was generally higher than RHA applied at similar dosages, up to 3 days-post treatment. All treatments produced 100% mortality of C. maculatus adults 4 days-post treatment. The data further confirm the efficacy of DE and RHA as insecticidal dusts at the dosage rate of 0.5 g or more per kg of grain.https://www.openagrar.de/receive/openagrar_mods_00043128rice husk ashdiatomaceous earth (silico sec)lethalitystorage beetles |
| spellingShingle | Ofuya, Thomas Adler, Cornel Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles Julius-Kühn-Archiv rice husk ash diatomaceous earth (silico sec) lethality storage beetles |
| title | Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles |
| title_full | Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles |
| title_fullStr | Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles |
| title_full_unstemmed | Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles |
| title_short | Comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles |
| title_sort | comparative lethality of rice husk ash and a diatomaceous eartht adults of four storage beetles |
| topic | rice husk ash diatomaceous earth (silico sec) lethality storage beetles |
| url | https://www.openagrar.de/receive/openagrar_mods_00043128 |
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