Abstract
Our research aimed at monitoring the impact of some herbicides and of different fertilization levels on weeding and yield in two tiller crops: grain maize and sunflower. Experimental results thus obtained point out the particular efficiency in controlling weeds of the pre-emergent herbicide Guardian 2.5 l/ha associated with post-emergent herbicides (Buctril Universal 0.8 l/ha and Equip 2.5 l/ha) in maize and 2 mechanical tillage in sunflower. The yields obtained in both crops directly correlated with the weeding degree, i.e. higher in the variants in which weed control degree was maximal. The level of fertilization has a clear impact on yield in both crops. Thus, in maize, the variant fertilized with N150P60K60 produces 55.24 q/ha, and sunflower fertilized with N90P90K90 produces 26.75 q/ha.
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