Gr. Delchev* Department of Plant Production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria Abstract. During the period 2010 – 2012, on the experimental field of the Field Crops Institute, Chirpan a field experiment was carried out with imitolerant hybrid winte

Z. Petrova*, G. Sabev 1Department of Agrotechnology, Dobrudzha Agricultural Institute, 9520 General Toshevo, Bulgaria Abstract. The aim of this investigation was to determine the effect of the date of introduction of herbicides on the infestation with weeds. The experiments were carri

G. Delchev Abstract. During the period 2010 – 2012, on the experimental field of the Field Crops Institute – Chirpan was carried out a field experiment with oil-bearing sunflower (Helianthus annuus). A total of 18 variants from the three technologies for oil-bearing sunflower gr

G. Delchev Abstract. During the period 2010 – 2012, on the experimental field of the Field Crops Institute – Chirpan was carried out a field experiment with conventional Maximus hybrid PR44D06 (Brassica napus). A total of 15 variants were investigated. Canola hybrid from Maximus

I. Iliev, G. Milev Abstract. The weed control is a basic problem in organic agriculture. Most often it leads by multiple mechanical treatments, which except significant weed destruction show certain positive as well as some negative influence on the crop. In this investigation the inf

D. Angelova Abstract. The survey was conducted during the period 2009 – 2010 at IREMC – Kazanlak. The experiment is set in four iterations at a plantation of roses /R. damascena Mill./. We examined herbicide efficacy and selectivity of oxadiargyl /Raft 400 SC/ applied as s

D. Angelova, H. Lambev Abstract. The survey was conducted during the period 2008 – 2009 at Institute of Roses, Essential and Medicinal Cultures, Kazanlak. The experiment is set in the plantation of lavender variety Hebar. The efficacy and selectivity of the herbicide Raft 400 SC

M. Georgiev, D. Pavlov, G. Beev, M. Gerdzikova, R. Bazitov Abstract. During the period 2008-2009 investigation was performed to determine the species composition and density of weeds in the main cereals (wheat and barley). The aim of study was to establish the weed species diversity a