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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Chemical constituents of water hyacinth (Eichhornia crassipes) methanol leaf extract and its effect on selected enzymes of Periplaneta americana

100%
Adeleke G. E., Adedosu O. T., Ehigie L., Adegbola P. I., Olaniyi A. A., Agoola T. O., Ehigie A. F.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2020
|
tom 101
|
nr 4
2

Impact evaluation of Neochetina spp. on different growth stages of waterhyacinth

100%
Ray P., Sushilkumar, Pandey A. K.
Journal of Plant Protection Research
|
2009
|
tom 49
|
nr 1
7-13
An attempt was made to optimize the minimum required inoculation load of the weevils on three growth stages of waterhyacinth, based on reduction of fresh biomass, number of leaves and ramifications. The small growth stage was controlled earlier than the waterhyacinth of middle growth stage, corresponding to the increase in number of weevils per plant. The large plants could not be controlled even with the inoculation pressure of 20 weevils per plant because of high growth rate. This study suggests that Neochetina spp. has the potential to keep the population of the macrophyte at a subeconomic density, through a basic inoculation load of weevils in due course of time.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Chemicals with a natural reference for controlling water hyacinth, Eichhornia crassipes (Mart.) Solms

100%
El-Shahawy T. A. E.-G.
Journal of Plant Protection Research
|
2015
|
tom 55
|
nr 3
Life cannot exist without water. Appropriate management of water, from the water’s source to its utilization, is necessary to sustain life. Aquatic weeds pose a serious threat to aquatic environments and related eco-environments. Short- and long-term planning to control aquatic weeds is extremely important. Water hyacinth, Eichhornia crassipes (Mart.) Solms, is one of the world’s worst pests with a bad reputation as an invasive weed. In this study we are seeking the possibility of using certain chemicals with a natural background, for controlling water hyacinth since there is a delicate balance that needs to be taken into account when using herbicides in water. Five compounds, namely: acetic acid, citric acid, formic acid, and propionic acid, in three concentrations (10, 15, and 20%) were applied (i.e. as a foliar application under wire-house conditions) and compared with the use of the herbicide glyphosate (1.8 kg ∙ ha–1). All of the five compounds performed well in the control of the water hyacinth. As expected, the efficacy increased as the concentration was increased from 10 to 20%. With formic and propionic acids, the plants died earlier than when the other acids or the herbicide glyphosate, were used. Acetic acid came after formic and propionic acids in terms of efficacy. Citric acid ranked last. Formic acid/propionic acid mixtures showed superior activity in suppressing water hyacinth growth especially at the rate of (8 : 2) at the different examined concentrations (3 or 5 or 10%) compared to the formic acid/acetic acid mixtures. Using the formic acid/propionic acid mixture (8 : 2; at 3%) in the open field, provided good control and confirmed the viability of these chemicals in the effective control of water hyacinth. Eventually, these chemical treatments could be used on water for controlling water hyacinth. In the future, these chemicals could probably replace the traditional herbicides widely used in this regard. These chemicals are perceived as environmentally benign for their rapid degradation to carbon dioxide and water. For maximum efficiency thorough coverage especially in bright sunlight is essential.
4

Plaga wód Kongo

85%
I.V.
Wszechświat
|
1957
|
nr 05
5

Evaluation of water hyacinth [Eichhornia crassipes] and groundnut cake as dietary components in feeds for Oreochromis niloticus niloticus [L.]

80%
Ofojekwu P. C., Keke R. I., Asala G. N., Anosike J. C.
Acta Hydrobiologica
|
1994
|
tom 36
|
nr 2
227-233
The results showed that good growth and protein utilization was obtained with diets containing 18.04-20% groundnut cake and 14.76 to 15% water hyacinth meals. Further increase in the dietary water hyacinth led to a decline in growth and protein utilization. In general the protein digestibility was poor.
6

The effects of partial substitution of groundnut cake by water hyacinth [Eichhornia crassipes> on growth and food utilization in the Nile tilapia, Oreochromis niloticus niloticus [L.]

80%
Keke R. I., Ofojekwu P. C., Ufodike E. B., Asala G. N.
Acta Hydrobiologica
|
1994
|
tom 36
|
nr 2
235-244
The fingerlings were evaluated for growth and food utilization. The best growth and food utilization was obtained for fish on diet C45, which was a 45% of water hyacinth replacement of groundnut cake. Protein digestibilities of the whole diet were not significant. The economic advantage of using this cheap locally abundant but under-utilized weed as feed in solving the problem of developing a low input based fish culture technology for adoption by rural fish farmers were highlighted.
7

Rośliny z rodzaju Eichhornia - piękne i interesujące, ale trudne do utrzymania w akwarium

80%
Kornobis S.
Nasze Akwarium. Miesięcznik Miłośników i Hodowców Ryb
|
2005
|
nr 12[72]
8

Roślinny internet

80%
Dominiak M., Piszczalka P., Lembicz M.
Wiedza i Życie
|
2014
|
nr 06
9

Rosliny do sadzawek ogrodowych

71%
Paffrath K.
Magazyn Aqua
|
1997
|
nr 14
35-37
10

Atlas roślin do oczka wodnego. Cz. III. Rośliny pływające

61%
Prazmowski A.
Nasze Akwarium. Miesięcznik Miłośników i Hodowców Ryb
|
2006
|
nr 05[77]
11

Dwadzieścia najbardziej polecanych gatunków roślin do oczek wodnych. Cz. I. Rośliny wodne, pływające i podwodne

61%
Zientek H.
Nasze Akwarium. Miesięcznik Miłośników i Hodowców Ryb
|
2009
|
nr 02[107]
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