Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria
A herbicidal control of water hyacinth,WH (Eichhornia crassipes, Martius Solms — Laubach) was carried out by applying glyphosate (N — phosphyonomethyI glycerine) containing 360g/l glyphosate in the form of 480g/l isopropylamine salt at the rate of 2.16kg active ingredient (a.i/ha) by a fixed wing, A...
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| Format: | Article |
| Language: | English |
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Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)
2004-02-01
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| Series: | Journal of Applied Sciences and Environmental Management |
| Online Access: | https://www.ajol.info/index.php/jasem/article/view/17195 |
| _version_ | 1827296898415853568 |
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| author | G N O. EZERI P. C OFOJEKWU I S EZENWAKA W O ALEGBELEYE |
| author_facet | G N O. EZERI P. C OFOJEKWU I S EZENWAKA W O ALEGBELEYE |
| author_sort | G N O. EZERI |
| collection | DOAJ |
| description | A herbicidal control of water hyacinth,WH (Eichhornia crassipes, Martius Solms — Laubach) was carried out by applying glyphosate (N — phosphyonomethyI glycerine) containing 360g/l glyphosate in the form of 480g/l isopropylamine salt at the rate of 2.16kg active ingredient (a.i/ha) by a fixed wing, AG-CAT Schweizer plane at the Ere fishing channel.Pathological studies revealed that of the total number of fishes examined prior to the chemical application, 334 (5%) had fin-rot, 2541 (38%) abrasion, 802 (12%) lesions, 334 (5%) ulcerations, 1805 (27%) sloughing of their body slimc. None had tumours or nodules. The post application examination of fishes revealed that 5806 (7%) had fin-rot, 8294 (10%) abrasion, 4147 (5%) lesions, 1244 (1.5%) ulcerations and 4145 (5%) sloughing of body slime. None had tumours or nodules. The total number of fish that showed signs of infection prior to herbicidal application was 516 (86.9%) while it was 23,636 (28.49%) for post application of herbicide. The total number of fish caught prior to herbicidal treatment was 6,686 (7.46%) while a total number of 82,943 fish (92.54%) were caught after treatment. No fish mortality was observed throughout the post treatment monitoring. In this multi-disciplinary work, it was established that glyphosate at 2.16 a. i / ha controlled WH and associated weeds within four weeks of application without any intrinsic deleterious effect on fish and aquatic fauna.
(Journal of Applied Sciences & Environmental Management: 2002 6(1): 49-52) |
| first_indexed | 2024-04-24T14:47:29Z |
| format | Article |
| id | doaj.art-cdd169a4a6e6488590ed8e1d7d501cb4 |
| institution | Directory Open Access Journal |
| issn | 2659-1502 2659-1499 |
| language | English |
| last_indexed | 2024-04-24T14:47:29Z |
| publishDate | 2004-02-01 |
| publisher | Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) |
| record_format | Article |
| series | Journal of Applied Sciences and Environmental Management |
| spelling | doaj.art-cdd169a4a6e6488590ed8e1d7d501cb42024-04-02T19:55:06ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992004-02-016110.4314/jasem.v6i1.17195Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, NigeriaG N O. EZERIP. C OFOJEKWUI S EZENWAKAW O ALEGBELEYEA herbicidal control of water hyacinth,WH (Eichhornia crassipes, Martius Solms — Laubach) was carried out by applying glyphosate (N — phosphyonomethyI glycerine) containing 360g/l glyphosate in the form of 480g/l isopropylamine salt at the rate of 2.16kg active ingredient (a.i/ha) by a fixed wing, AG-CAT Schweizer plane at the Ere fishing channel.Pathological studies revealed that of the total number of fishes examined prior to the chemical application, 334 (5%) had fin-rot, 2541 (38%) abrasion, 802 (12%) lesions, 334 (5%) ulcerations, 1805 (27%) sloughing of their body slimc. None had tumours or nodules. The post application examination of fishes revealed that 5806 (7%) had fin-rot, 8294 (10%) abrasion, 4147 (5%) lesions, 1244 (1.5%) ulcerations and 4145 (5%) sloughing of body slime. None had tumours or nodules. The total number of fish that showed signs of infection prior to herbicidal application was 516 (86.9%) while it was 23,636 (28.49%) for post application of herbicide. The total number of fish caught prior to herbicidal treatment was 6,686 (7.46%) while a total number of 82,943 fish (92.54%) were caught after treatment. No fish mortality was observed throughout the post treatment monitoring. In this multi-disciplinary work, it was established that glyphosate at 2.16 a. i / ha controlled WH and associated weeds within four weeks of application without any intrinsic deleterious effect on fish and aquatic fauna. (Journal of Applied Sciences & Environmental Management: 2002 6(1): 49-52)https://www.ajol.info/index.php/jasem/article/view/17195 |
| spellingShingle | G N O. EZERI P. C OFOJEKWU I S EZENWAKA W O ALEGBELEYE Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria Journal of Applied Sciences and Environmental Management |
| title | Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria |
| title_full | Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria |
| title_fullStr | Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria |
| title_full_unstemmed | Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria |
| title_short | Effect of Herbicidal Control of Water Hyacinth on Fish Health at the Ere Channel, Ogun State, Nigeria |
| title_sort | effect of herbicidal control of water hyacinth on fish health at the ere channel ogun state nigeria |
| url | https://www.ajol.info/index.php/jasem/article/view/17195 |
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