Results 21 to 30 of about 510 (131)

Host spectrum, reproduction, and survival of Neochetina eichhorniae (Coleoptera: Curculionidae) - A potential natural enemy for controlling water hyacinth (Eichhornia crassipes)

open access: yesThe Journal of Agriculture and Development, 2021
Neochetina eichhorniae (Coleoptera: Curculionidae) is a natural enemy of water hyacinth and its morphology as well as biology has been investigated previously. In this study, the host range of N. eichohorniae was examined using the following 7 groups of plants: Pontederiaceae (water hyacinth, Eichhornia crassipes; hastate-leaf pondweed, Monochoria ...
openaire   +2 more sources

A Computer Simulation Model of Waterhyacinth and Weevil Interactions [PDF]

open access: yes, 1991
A personal computer simulation model termed INSECT has been developed to evaluate biological control of waterhyacinth (Eichhornia crassipes (Mart.) Solms.) by two species of weevil (Neochetina eichhorniae Warner, and N. bruchi Hustache).
Akbay, Kunter S.   +2 more
core   +1 more source

ESTABLISHMENT OF NEOCHETINA SPP.: THEIR PATTERN OF LOCAL DISPERSAL AND AGE STRUCTURE AT THE RELEASE SITE [PDF]

open access: yes, 2011
Study on the distribution pattern and age structure ofNeochetina spp. (Coleoptera: Curculionidae) at the release site was conducted to know a) the distribution pattern of the weevil, b) its establishment status, c) its survival rate in the field, and d ...
KASNO, KASNO   +3 more
core   +2 more sources

Do tissue carbon and nitrogen limit population growth of weevils introduced to control waterhyacinth at a site in the Sacramento-San Joaquin Delta, California? [PDF]

open access: yes, 2004
Waterhyacinth (Eichhornia crassipes(Mart.) Solms), is a serious problem in the Sacramento Delta. Two weevil species (Neochetina bruchi Hustache and N. eichhorniae Warner) have been introduced as biological control agents. The purpose of this study was
Ksander, Gregory G., Spencer, David F.
core  

Agrobiodiversity and Its Conservation in Nepal [PDF]

open access: yes, 2020
Nepal is a part of the world\u27s biodiversity hotspot and ranks the 49th in the world for biodiversity. Agrobiodiversity and its conservation status were studied through literature review, field survey, key informant survey and focus group discussion ...
Ghimire, K. H. (Krishna)   +8 more
core  

Persebaran Agens Hayati Neochetina Spp. (Coleoptera: Curculionidae) Di Jawa Barat Dan DKI Jakarta [PDF]

open access: yes, 2006
The establishment of Neochetina spp. as biocontrol agent of waterhyacinth are related to the weevil's ability to disperse and to increase their population sizes. The objective of this research was to study the distribution and abundance of Neochetina spp.
Buchori, D. (Damayanti)   +4 more
core  

First report of establishment of two weevils, Neochetina bruchi and Neochetina eichhorniae Warner (Coleoptera: Curculionidae), released against water hyacinth [Pontederia crassipes Mart.] in the Philippines [PDF]

open access: yes, 2023
Water hyacinth, Pontederia crassipes Mart. [syn. Eichhornia crassipes (Mart.) Solms.] of the family Pontederiaceae, is one of the world’s worst aquatic weeds and a major problem in the Philippines, covering lakes, and blocking drainage and irrigation ...
Day, Michael D.   +3 more
core  

Temperature Optima for Development of Neochetina eichhorniae and Orthogalumna terebrantis

open access: yesThe Florida Entomologist, 1977
Mottled waterhyacinth weevils, Neochetina eichhorniae Warner, and waterhyacinth mites, Orthogalumna terebrantis Wallwork, were tested for mortality, feeding, oviposition, and emergence at 4 temperature regimes, viz. 5-25@*, 10-30@*, 15-35@*, and 20-40@*C. Highest mortality for both species occurred at the 2 extreme regimes.
openaire   +1 more source

S. Dharmaputra [PDF]

open access: yes, 1999
The study on the integrated use of the chevroned water hyacinth weevil (Neochetina bruchi Mustache) and the water hyacinth blight disease (Alternaria eichhorniae Nag Raj & Ponnappa) in suppressing water hyacinth growth was carried out under field ...
DHARMAPUTRA, O. S. (OKKY)   +4 more
core  

Establishment of Neochetina Spp.: Their Pattern of Local Dispersal and Age Structure at the Release Site [PDF]

open access: yes, 2001
Study on the distribution pattern and age structure ofNeochetina spp. (Coleoptera: Curculionidae) at the release site was conducted to know a) the distribution pattern of the weevil, b) its establishment status, c) its survival rate in the field, and d ...
KASNO, K. (KASNO)   +3 more
core  

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