Two field experiments were conducted at the
Agricultural Research and Experiment Center, Faculty of
Agriculture at Moshtohor, Kalubia, Egypt, during 1985 and
1986 seasons. The aim of the investigation was to study
the efficiency of some herbicides in controlling soybean
weeds,
The applied herbicides as well as hoeing treatment
decreased significantly the fresh and dry weight of grass,
broad—leaved and total weeds after 60 and 90 days from
soybean sowing compared with un-weed treatment except Lasso
(2.0 L.), AC (0.315 L) + surfactant, Scepter (1.05 L.),
Stomp (1.7 L.) and Afalon S (1.0 kg/fad.) on broad—leaved
weeds in the first period (60 days). The superiority of
the herbicides in controlling weeds after 60 days was
obtained from AC (0.42 L.), Amex (2.5 L.), hoeing, AC (0.315
L.) + surf actant and Scepter (0.7 L.) + Stomp (1.25 L./fad.).
On the other hand herbicides with low efficiency were Afalon
S (1.0 kg), Scepter (1.05 L.) and Lasse (2.0 L./fad.).
After 9’ days from sowing, weed reduction over 70%
was found by hoeing, AC (0.42 L.), Amex (2,5 L.), AC (0.21
L.), AC (0.315 L.), AC (0.315 L.) + surfactant and Ronstar
(2.0 L./fad.); reduction between 55 and 70% was by Scepter
(0.7 L.) + Stamp (1.25 L.), Lenamex (3.5 L.), Ronstar (1.5
L.), Lasso (1.5 L.) + Linuron (0.75 kg) and Lasso (2.0
L./fad.), reduction of less than 55% was by Scepter (1.05

L.), Stomp (1.7 L.) and Afalon S (1.0 kg/fad.)