The effect of two biological control agents, the weevil Neochetina eichhorniae and the mirid Eccritotarsus catarinensis on water hyacinth, Eichhornia crassipes, grown in culture with water lettuce, Pistia stratiotes

BioControl ◽  
2008 ◽  
Vol 54 (1) ◽  
pp. 155-162 ◽  
Author(s):  
O. Ajuonu ◽  
M. Byrne ◽  
M. Hill ◽  
P. Neuenschwander ◽  
S. Korie
Keyword(s):  
Biological Control ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Pistia Stratiotes ◽  
Water Lettuce ◽  
Biological Control Agents ◽  
Neochetina Eichhorniae

Interactions within pairs of biological control agents on water hyacinth, Eichhornia crassipes

2013 ◽  
Vol 67 (3) ◽  
pp. 483-490 ◽  
Author(s):  
Danica Marlin ◽  
Martin P. Hill ◽  
Marcus J. Byrne
Keyword(s):  
Biological Control ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Biological Control Agents

Alien Invasive Aquatic Plant Species in Botswana: Historical Perspective and Management

2016 ◽  
Vol 9 (1) ◽  
pp. 1-40 ◽  
Author(s):  
C. N. Kurugundla ◽  
B. Mathangwane ◽  
S. Sakuringwa ◽  
G. Katorah
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Plant Species ◽  
Water Hyacinth ◽  
Water Bodies ◽  
Pistia Stratiotes ◽  
Okavango Delta ◽  
Aquatic Weeds ◽  
Water Lettuce ◽  
The Government

Aquatic ecosystems in Botswana have been under threat by the aquatic alien invasive plant species viz., salvinia Salvinia molesta Mitchell, water lettuce Pistia stratiotes L., and water hyacinth Eichhornia crassipes (Mart.) Solms-Laub. While salvinia has been termed the major threat to the Botswana wetlands, water lettuce and water hyacinth are considered to be of minor importance. This review presents the species biology, distribution, historical spread, negative impacts, control achieved right from their discovery in the country by referring to their control and management in the world. Having infested the Kwando-Linyanti-Chobe Rivers in the 1970s, salvinia was initially tried by the use of herbicides, paraquat and glyphosate, between 1972 and 1976. With the discovery of the host specific biological control weevil Cyrtobagous salviniae Calder and Sands in 1981, the weevil was introduced by Namibians on Kwando and Chobe Rivers in 1983 and by Botswana in 1986 in the Okavango Delta. While the control was slowly establishing in Kwando-Linyanti-Chobe Rivers, it became apparent that lakes and perennial swamps within and outside Moremi Game Reserve of the Okavango Delta were infested with salvinia from 1992 onwards. With continuous and sustained liberation of the weevil in the Kwando-Linyanti-Chobe Rivers and in the Okavango Delta between 1999 and 2000, salvinia control was achieved by 2003, and since then the weevil constantly keeps the weed at low levels. The success is mainly due to sustainable monitoring through the application of physical and biological control methods. However, salvinia is still threatening the Okavango Delta due to factors such as tourism activities, boat navigation fishing and transporttion by wild animals. The first occurrence of water lettuce was recorded on Kwando and Chobe Rivers in 1986. Its biocontrol weevil Neohydronomous affinis Hustache was released in the year 1987. The weevil became extinct in Selinda Canal and Zibadianja Lake on Kwando River due to dry and wet events for over 10 years and the weed had been under control biologically on Chobe River. Having surface covered the Selinda and a part of the Zibadianja in high flood and rainfall in 1999/2000 season, research was undertaken to contain water lettuce, which led to its eradication by 2005. Regular physical removal of the water lettuce prior to fruit maturity is an effective method of control or eradicating the weed in seasonal water bodies. The Limpopo Basin (shared by Botswana, South Africa, Zimbabwe and Mozambique) has become vulnerable to water hyacinth infestation. Water hyacinth infested the trans-boundary Limpopo River in 2010 sourced from Hartbeesport Dam on Crocodile River in South Africa. Botswana and South Africa have been consulting each other to implement integrated control of the weed jointly in the Limpopo River. Water hyacinth could be a continuous threat to the dams and the rivers in the Limpopo basin if its control is not taken seriously. These three species are found growing in Botswana in a range of pH between 4.5 and 10.3 and in the range of conductivities between 20 and 580 µS cm-1. Range of soluble nitrates, phosphates and potassium in the habitats of salvinia infestations were 0.02 to 1.5, 0.01 to 1.78 and 0.3 to 6.92 mg L-1 respectively. Water lettuce infestation in the seasonal Selinda Canal had a maximum of 4.7 mg L-1 nitrates, 2.8 mg L-1 phosphates and 7.9 mg L-1 potassium. Nevertheless, these three nutrients were in the range of 0.41 to 9.56 mg L-1, 0.2 to 2.9 mg L-1, and 7.7 to 11.53 mg L-1 respectively in the Limpopo River where water hyacinth infestations were observed. These nutrients were considerably high during decomposition phase of biological control of weeds. The Government of Botswana “regulates the movement and importation of boats and aquatic apparatus, to prevent the importation and spread of aquatic weeds both within and from the neighboring countries” by “Aquatic Weed (Control) Act” implemented in 1986. These measures, combined with communities, conservation groups, NGOs and public awareness campaigns, have highlighted the gravity of aquatic weeds spreading into wetlands, dams and other water bodies. In conclusion, the Government of Botswana is committed and supportive through the Department of Water Affairs in protecting the wetlands of the country efficiently and prudently.

Ethanol production from candidate energy crops: Water hyacinth (Eichhornia crassipes) and water lettuce (Pistia stratiotes L.)

2008 ◽  
Vol 99 (7) ◽  
pp. 2495-2500 ◽  
Author(s):  
D. Mishima ◽  
M. Kuniki ◽  
K. Sei ◽  
S. Soda ◽  
M. Ike ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Energy Crops ◽  
Pistia Stratiotes ◽  
Water Lettuce

scholarly journals Water hyacinth (Eichhornia crassipes) and water lettuce (Pistia stratiotes) in the Great Lakes: playing with fire?

2011 ◽  
Vol 6 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Abisola Adebayo ◽  
Elizabeta Briski ◽  
Odion Kalaci ◽  
Marco Hernandez ◽  
Sara Ghabooli ◽  
...  
Keyword(s):  
Great Lakes ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Pistia Stratiotes ◽  
Water Lettuce

scholarly journals EVALUATION OF TREATMENT OF DOMESTIC WASTEWATER USING EICCHORNIA CRASSIPES AND PISTA STRATIOTES BY PHYTOTECHNOLOGIES

2020 ◽  
Vol 4 (2) ◽  
pp. 49-53
Author(s):  
Yousaf Hassan ◽  
Shahbaz Nasir Khan ◽  
Hafiz Muhammad Safdar Khan ◽  
Rana Ammar Aslam ◽  
Touseef Ahmed Babar ◽  
...  
Keyword(s):  
Aquatic Plants ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Domestic Wastewater ◽  
Water Shortage ◽  
Pistia Stratiotes ◽  
Water Crisis ◽  
Water Lettuce ◽  
Global World ◽  
Day By Day

Water shortage is now one of the major issues of the global world. Water scarcity is increasing day by day. The availability of water is decreasing. The need of hour is to treat the wastewater for dealing water crisis and using it for various purposes. This study involves the treatment of domestic wastewater using phytoremediation technique. The two aquatic plants named Eichhornia crassipes (Water hyacinth) and Pistia stratiotes (Water lettuce) were used. The parameters investigated in this research were pH, TDS, Turbidity, EC, TSS and temperature. These parameters were checked at various retention times after every three days interval. The objective of this study was to get higher efficiencies of these two aquatic plants in improving the parameters involved in the research. The adequacy of the treatment parameters was also validated using statistical analysis. It was established by the results at the end of the experiment that maximum efficiencies were achieved by this phytoremediation technique. This concluded that these two aquatic plants treated the wastewater to such an extent that it can be safely disposed in the drains.

scholarly journals The Physiological Responses of Water Hyacinth (Eichhornia crassipes (Mart). Solms) and Water Lettuce (Pistia stratiotes L.) as Trivalent Chromium Bioaccumulator

2020 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
Rizka Purnamawati ◽  
T Taufikurahman ◽  
Andira Rahmawati ◽  
Chalvin Rura Putra ◽  
Din Dzakamala Fafi Rahmatilah ◽  
...  
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Physiological Responses ◽  
Trivalent Chromium ◽  
Pistia Stratiotes ◽  
Water Lettuce

Phytoremediation of wastewater toxicity using water hyacinth (Eichhornia crassipes) and water lettuce (Pistia stratiotes)

2016 ◽  
Vol 18 (10) ◽  
pp. 949-955 ◽  
Author(s):  
Kouamé Kouamé Victor ◽  
Yapoga Séka ◽  
Kouadio Kouakou Norbert ◽  
Tidou Abiba Sanogo ◽  
Atsé Boua Celestin
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Pistia Stratiotes ◽  
Water Lettuce

scholarly journals The Ability of Water Hyacinth (Eichhornia crasipes Mart.) and Water Lettuce (Pistia stratiotes Linn.) for Reducing Pollutants in Batik Wastewater

2021 ◽  
Vol 226 ◽  
pp. 00010
Author(s):  
Bunyamin Muchtasjar ◽  
Hadiyanto Hadiyanto ◽  
Munifatul Izzati ◽  
Zane Vincēviča–Gaile ◽  
Roy Hendroko Setyobudi
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Residential Area ◽  
Pistia Stratiotes ◽  
Treated Wastewater ◽  
Water Lettuce ◽  
In Series ◽  
Small And Medium Industry

Batik produced by craftsmen is categorized as a small and medium industry. The problem of Batik production is less attention to the environment because the craftsmen lived in the middle of a residential area that has inexperience. One of less attention to the environment is no treatment of wastewater that reaches up to 95 % (61.9 L each cloth). Thus it polluted the river. This research aimed to treat the wastewater of Batik production by using phytoremediation. In this study, phytoremediation was carried out in three tanks in series using Eichhornia crassipes and Pistia stratiotes which are abundant in Indonesia. The treated wastewater was evaluated for its ammonia and chromium (Cr). The results showed that ammonia reduced 78.36 % by E. crassipes, and 73.13 % P. stratiotes. While E. crassipes reduced Cr by 63.76 % and P. stratiotes by 83.39 %. This research concluded that E. crassipes and P. stratiotes are potential plants to reduce the pollutants in Batik wastewater.

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