In this paper, we present a few aspects concerning the control of weeds in winter wheat and grain maize, among which Rubus caesius L., a problem species popularly called dewberry. We describe materials and methods used in the control of problem weeds, that helped us monitor the control degree in percentage of dicot weeds, in general, and of the species Rubus caesius L., in particular, as well as winter wheat and grain maize yields in q/ha in both treated and not treated variants in the years 2008-2009 and 2009-2010. We present research results concerning the total number of weeds/m 2 in the control variant in winter wheat and in grain maize as well as the participation share. In winter wheat, we observed in the years 2008-2009 and 2009-2010 a number of 11 weed species, the total number of weeds per m 2 being 77, with a participation share of 100%, and in grain maize in the years 2009 and 2010, 11 weed species, the total number of weeds per m 2 being 282, with a participation share of100%. Dewberry was present in winter wheat with a number of 4.65 weeds/m 2 with a participation share of 5.5%, while in grain maize there were 24.2 weeds/m 2 with a participation share of 8.58%. The most efficient diminution of dewberry shoots in winter wheat was ensured by the herbicide Dialen Super 464 SL (0.9 l/ha), with a control degree of 93.70%. A weed control above 90% was also in the variants treated with Premiant (1 l/ha) 93.46% and Ceredin Super (1 l/ha) 93.31%, Lancelot 450 WG (30 g/ha) and Buctril Universal (1 l/ha) 90.84%. The most efficient diminution of dewberry shoots in grain maize was ensured by the herbicide Dialen Super 464 SL (0.9 l/ha), with a control degree of 85.97%.

herbicide, Rubus caesius L., weed, winter wheat, grain maize

Presentation: oral