Results 101 to 110 of about 510 (131)
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Crop Protection, 2015
Abstract Neochetina weevils have potential as biocontrol agents for water hyacinth, an aquatic weed which seriously affects irrigation water supply in sugarcane, vegetables and other horticultural crop production in the Rift Valley of Ethiopia. A study was conducted on (i) the adaptability and duration of developmental stages of Neochetina weevils ...
Firehun, Y. +3 more
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Abstract Neochetina weevils have potential as biocontrol agents for water hyacinth, an aquatic weed which seriously affects irrigation water supply in sugarcane, vegetables and other horticultural crop production in the Rift Valley of Ethiopia. A study was conducted on (i) the adaptability and duration of developmental stages of Neochetina weevils ...
Firehun, Y. +3 more
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Journal of Environmental Science and Health, Part B, 1989
Abstract Water hyacinth plants treated for a week with varying concentrations (10–50 ppm) of soluble Cd, Mn and Zn were taken and fed to the phytophagous weevils Neochetina eichhorniae (Warner), which were subsequently examined for the toxic effects and other parameters.
Md. Saber Hussain, Kaiser Jamil
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Abstract Water hyacinth plants treated for a week with varying concentrations (10–50 ppm) of soluble Cd, Mn and Zn were taken and fed to the phytophagous weevils Neochetina eichhorniae (Warner), which were subsequently examined for the toxic effects and other parameters.
Md. Saber Hussain, Kaiser Jamil
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Bulletin of Environmental Contamination and Toxicology, 1986
Both aquatic and terrestrial habitats frequently are subject to contamination by toxic heavy metals, yet very little is known about the influence of heavy metals absorbed by plant tissues upon the phytophagous insect fauna feeding upon these plants. The objectives of this study were to determine the influence of plant-absorbed metals upon the feeding ...
S H, Kay, W T, Haller
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Both aquatic and terrestrial habitats frequently are subject to contamination by toxic heavy metals, yet very little is known about the influence of heavy metals absorbed by plant tissues upon the phytophagous insect fauna feeding upon these plants. The objectives of this study were to determine the influence of plant-absorbed metals upon the feeding ...
S H, Kay, W T, Haller
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Neochetina eichhorniae Warner 1970
2004Published as part of Hendrich, Lars & Balke, Michael, 2004, Aquatic Coleoptera Of Singapore: Species Richness, Ecology And Conservation #, pp.
Hendrich, Lars, Balke, Michael
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Biological Control, 1999
Abstract The weevils Neochetina eichhorniae and N. bruchi were released in the USA for waterhyacinth control during the early 1970s and have since been used in many other countries. Although successful control has been reported, questions regarding the efficacy of these insects remain unresolved. This lack of consensus may be attributed to the subtle
Ted D Center +3 more
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Abstract The weevils Neochetina eichhorniae and N. bruchi were released in the USA for waterhyacinth control during the early 1970s and have since been used in many other countries. Although successful control has been reported, questions regarding the efficacy of these insects remain unresolved. This lack of consensus may be attributed to the subtle
Ted D Center +3 more
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Weed Science, 1982
Waterhyacinth [Eichhornia crassipes(Mart.) Solms] grown in screen-enclosed, outdoor aquaria were treated with factorial combinations of 0, 0.75, 1.5, or 3 kg/ha of the experimental growth retardant EL-509 [α-(4-chlorophenyl)-α-(1-methylethyl)-5-pyrimidine-methanol] and zero, one, two, or three pairs of waterhyacinth weevils (Neochetina ...
Ted D. Center +2 more
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Waterhyacinth [Eichhornia crassipes(Mart.) Solms] grown in screen-enclosed, outdoor aquaria were treated with factorial combinations of 0, 0.75, 1.5, or 3 kg/ha of the experimental growth retardant EL-509 [α-(4-chlorophenyl)-α-(1-methylethyl)-5-pyrimidine-methanol] and zero, one, two, or three pairs of waterhyacinth weevils (Neochetina ...
Ted D. Center +2 more
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Environmental Entomology, 1984
Examination of data from Florida (United States) and Queensland (Australia) revealed a close relationship between numbers of adult waterhyacinth weevils ( Neochettna etchhomtae Warner) and the number of feeding scars on waterhyacinth leaves. Regression analysis produced nearly identical results for samples from both countries even though data ...
A. D. Wright, T. D. Center
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Examination of data from Florida (United States) and Queensland (Australia) revealed a close relationship between numbers of adult waterhyacinth weevils ( Neochettna etchhomtae Warner) and the number of feeding scars on waterhyacinth leaves. Regression analysis produced nearly identical results for samples from both countries even though data ...
A. D. Wright, T. D. Center
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BioControl, 2003
Water hyacinth (Eichhornia crassipes (Mart.) Solms.)creates severe problems in the irrigationdistricts of Mexico, particularly in westernSinaloa. Therefore water hyacinth weevils(Neochetina eichhorniae Warner and N. bruchi Hustache), imported from the USA in1993, were used to initiate a biologicalcontrol program.
José Angel Aguilar +3 more
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Water hyacinth (Eichhornia crassipes (Mart.) Solms.)creates severe problems in the irrigationdistricts of Mexico, particularly in westernSinaloa. Therefore water hyacinth weevils(Neochetina eichhorniae Warner and N. bruchi Hustache), imported from the USA in1993, were used to initiate a biologicalcontrol program.
José Angel Aguilar +3 more
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Weed Science, 1994
Waterhyacinths grown outdoors were treated with combinations of 0 or 22 kg ai ha-1of the plant growth retardant paclobutrazol and 0, 25, or 250 waterhyacinth weevils per culture tank under conditions of low (25% coverage) or high (100% coverage) plant densities. The low plant density treatments simulated a regrowth or colonization situation.
Thai K. Van, Ted D. Center
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Waterhyacinths grown outdoors were treated with combinations of 0 or 22 kg ai ha-1of the plant growth retardant paclobutrazol and 0, 25, or 250 waterhyacinth weevils per culture tank under conditions of low (25% coverage) or high (100% coverage) plant densities. The low plant density treatments simulated a regrowth or colonization situation.
Thai K. Van, Ted D. Center
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