Abstract:
The paper presents the results obtained under soil-climatic conditions of Cluj-
Napoca, Romania, during 2003-2005. The main goal of experiments was to establish an
optimal network for weed control in maize crops. High weed encroachment of maize crops in
Cluj area has increased, due to weed seed stock in the arable layer and weather conditions,
which allowed weeds to grow alternatively, and to the development of problem species during
the maize vegetation period, when no tillage was performed. A good efficiency in controlling
the entire weed spectrum from maize crops and with high persistence was the combination of
an acetochlore-based herbicide. The variant RELAY 90EC 2.2 l/ha, applied at the stage of preemergence,
florosulam based-herbicide and acid 2.4D: MUSTANG 0.6 l/ha, applied at the
stage of post-emergence, had a control degree of 72%, for the entire vegetative period. The
average control degree was achieved by variants controlled before emergence with DUAL
GOLD 960 EC 1.5l/ha. In vegetation, the complex herbicides OLTISAN M. 1l/ha or RING 80
WG 25 g/ha were used, the average control degree being of 73%, respectively, 75%.
