A field study was carried out at the Experimental Farm of Assiut University, Egypt during 2019–2020 and 2020–2021 to evaluate the potency of carfentrazone (CARF) alone and four new premixes of carfentrazone + dicamba (CARF+DICA), carfentrazone + tribenuron (CARF+TRIB), carfentrazone + fenoxaprop (CARF + FENO), and carfentrazone + fenoxaprop + tralkoxydim (CARF + FENO + TRAL), on broadleaved weed and its influence on the productivity of winter wheat. Wheat fields were infested with different annual broad-leaved weeds during the study years and Rumex dentatus L., Chenopodium album L., and Beta vulgaris L. were the dominant weed species. All herbicide treatments performed a high efficacy against broadleaved weeds in wheat fields 30 days after herbicide treatments (DAHT) in both years. All tested herbicides achieved 95.24– 96.30% and 84.92–96.65% in controlling broad-leaved weeds and significantly reduced fresh weed biomass by 99.14–99.87% and 98.20– 99.68% in the first and second year, respectively, compared with control. CARF+DICA caused severe injury to the flag leaves of wheat and performed alteration in spike and spikelet form that resulted in a significant reduction in grain yield by 47.37 and 16.28%, in the first and second year compared to the control, respectively. CARF+DICA should not be used to control weeds in wheat cultivar 'Sids 14'. Other tested herbicides caused a slightly visible injury on the leaves of wheat in the first days after application but the injury disappeared after 28 DAHT, without any effect on crop yield. All herbicides except CARF+DICA resulted in significantly higher biological yield and grain yield than the control and CARF+DICA. CARF+FENO and CARF+FENO+TRAL resulted in the highest biological yield and grain yield in both years followed by CARF+TRIB (in 2020– 2021) and CARF (in 2019–2020) compared to the control. All herbicides except CARF+DICA are considered new promising options for the control of broad-leaved weeds in common wheat in the Upper Egypt region.

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. 

(2023) 

Onion is one of the most significant vegetable plants that cultivated on large areas in Egypt. The onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae) is the most destructive insect pest causes significant damage to seed heads and reduce onion seed crop production about 50% annually. The combinationof Thiamethoxam + Abamectin has been recommended to control T. tabaci in Egypt. Herein, we evaluated the toxicity of eight selected insecticides [Abamectin (1.8% EC), Lufenuron (5% EC), Thiamethoxam (18.6% SC), and Thiamethoxam + Abamectin (18.6 EC+1.8% EC), Lambda-cyhalothrin+ Abamectin (5% EC+1.8% EC), Carbosulfan (20% SP), Lambda-cyhalothrin (5% EC) and Bacillus thuringiensis kurstaki (4.6% EC) against T. tabaci under field conditions. The results were recorded after 1, 2, 3, 7 and 14 days. Among all tested insecticides, the combination of Thiamethoxam + Abamectin was more potent to T. tabaci than separate application of Thiamethoxam or Abamectin solely, While, Lufenuron and Bacillus thuringiensis kurstaki were the least toxic insecticides. These insecticides mixtures gave promising results in controlling the onion thrips, T. tabaci.