Effect of some herbicides on controlling water hyacinth( Eichhornia crassipes) & its influence on evapotranspiration rates.

Abstract: Two out-door experiments were conducted in June to September 1996 at Bahteem, Kalubia Governorat. Five selected herbicides were tested in pots for controlling water hyacinth. Isoproturon (Arelon 50%) and Fluazifop- Butyl (Fusilade 25%) did not show any phytotoxic effect on the plants. Fluroxypur (Starane 20%) at 900 gm a.i./fed., caused some effect on plants, number of leaves and dry weight , their values were 25 %, 32.5 % and 1.67 gm respectively. Lancer (Glyphosate 36 %) at 180 and 360 gm a.i./fed., reduced the number of leaves by 77.5 and 92.5 %, respectively. Plant mortality reached 62.5 and 87.5 %, respectively for the same doses. Paraquat (Gramoxone 20%) at 360 gm a.i./fed., reduced the number of leaves by 80 % and Plant mortality reached 75 % as compared with control. Lancer (Glyphosate) at 360 gm a.i./fed. and Paraquat (Gramoxone) at 360 gm a.i./fed. are the best herbicide treatments for controlling water hyacinth.
Evapotranspiration of untreated water hyacinth was higher than treated plants by herbicides. Fluroxypur (Starane) at 900 gm a.i./fed. decreased evapotranspiration and its value was 2.3 cm/day. Lancer (Glyphosate) at 90, 180 and 360 gm a.i./fed. decreased the evapotranspiration and its mean values were 2.137, 1.832 and 1.656 cm/day. However, Paraquat (Gramoxone) at 90, 180 and 360 gm a.i./fed. decreased the evapotranspiration and their mean values were 2.517, 2.132 and 1.801 cm/day.
It can be concluded that the mean values of evapotranspiration
were 2.6 and 1.6 cm/day, respectively for untreated and treated plants. In other words, the presence of water hyacinth caused an increased loss of about 61.54 %.
Publication year 1999
Pages 117-130
Organization Name
serial title Bull. Fac. Agric., Cairo Univ
Author(s) from ARC
External authors (outside ARC)
    عادل يوسف صليب معهد بحوث المحاصيل الحقلية-مركز البحوث الزراعية
Agris Categories Weeds and weed control
AGROVOC
TERMS		 Eichhornia crassipes. Evapotranspiration. Herbicides.
Publication Type Journal
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