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Effect of Bentazon and Different Lipid-Inhibitor Herbicides on Weed Control and Yield of Faba Bean (Vicia faba L.) in Upper Egypt

Research Authors
Ibrahim Abd El-Wahab Mohamed
Research Abstract

Weeds are amongst the major serious agricultural pests of faba bean 
(Vicia faba  L.) production in Egypt and should be controlled. Clethodim is the 
only post-emergence herbicide registered for grass weed control in faba beans  in 
Egypt. Two field separate experiments were conducted at Assiut University farm 
in  two  different  locations  in  2021-2022.  The  first  field  experiment  aimed  to 
evaluate  the  efficacy  of  some  lipid–inhibitor  herbicides  (clethodim  24%, 
clethodim  12%,  clethodim  +  haloxyfop  22.6%,  diclofop-methyl  36%, 
fenoxaprop-p-ethyl  7.5%,  quizalofop-p-ethyl  5%,  and  thiobencarb  50%)  and 
hand hoeing treatments for controlling the grass weed,  Phalaris minor  Retz in 
faba bean. The second field experiment aimed to evaluate the effects of bentazon 
48% herbicide on broad-leaf weeds in faba bean.  Phalaris minor  was the only 
grass  weed  presented  in  the  first  experimental  field,  while  Beta  vulgaris  L., 
Cichorium  pumilum  Jacq.  and  Ammi  majus  L.  were  the  dominant  broadleaf 
weeds in the second experimental field. In the first experiment, all selected lipid–
inhibitor herbicides except fenoxaprop provided 89.49–98.58% in controlling P. 
minor  compared with the weedy control at 62 days after crop sowing. Among all 
lipid–inhibitors, clethodim 24%, thiobencarb 50%, diclofop-methyl 36%, and 
clethodim + haloxyfop 22.6% performed the highest increment (82.81–86.57%) 
in  faba  bean  yield  versus  control.  In  the  second  experiment,  bentazon  48% 
provided excellent efficiency against broadleaf weeds with weed reduction of up 
to 95% and increased faba bean yield by 69.54% compared with the control at 
68  days  after  crop  sowing.  In  the  current  scenario,  the  grass  herbicides 
(clethodim  24%,  thiobencarb  50%,  diclofop-methyl  36%,  and  clethodim  + 
haloxyfop 22.6%) and a broadleaf herbicide (bentazon 48%) can be used as a 
promising chemical herbicide option for the control of weeds in faba bean  cv.
Giza 843 in Upper Egypt. 

Research Date
Research Department
Research Journal
Egyptian Academic Journal of Biological Sciences F. Toxicology & Pest Control
Research Publisher
Egyptian Academic Journal of Biological Sciences F. Toxicology & Pest Control http://eajbsf.journals.ekb.eg/
Research Rank
-
Research Vol
Egypt. Acad. J. Biolog. Sci. (F. Toxicology& Pest control) Vol.15(1)
Research Website
DOI: 10.21608/EAJBSF.2023.294087
Research Year
2023
Research Pages
97-105