Selectivity of Some Herbicides to Perennial ryegrass (Lolium perenne L.), Grown for Seed Production
Selektivnost nekih herbicida prema engleskom ljulju (Lolium perenne L.), gajenom za proizvodnju semena
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Author
Dimitrova, Tsvetanka
Katova, Aneliya
Keywords
Perennial ryegrass (Lolium perenne L.)Herbicides
Selectivity
Seeds
Dry biomass
Engleski ljulj
herbicidi
selektivnost
seme
suva biomasa
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Show full item recordAbstract
During the period 2008-2010, on the experimental field of the Institute of Forage Crops
– Pleven, on slightly leached chernozem a study was conducted with the purpose to determine
the selectivity of some herbicides to perennial ryegrass (Lolium perenne L.), and their
influence on the seed productivity. As a result of the study the following was found: herbicides
for broadleaf weeds control – Arat (500 g/l dicamba + 250 g/l tritosulfuron) at rate
of 100 ml/ha, Korida 75 VDG (750 g/kg tribenuron-methyl) – 15 g/ha and Cambio SL (320
g/l bentazone + 90 g/l dicamba) – 1250 ml/ha had high selectivity to perennial ryegrass,
applied at 2-4 leaf stage during establishing year of the stand and until the stage of the
beginning of shooting up in seed production year. Herbicide for grass weeds control: Topik
080EK (80 g/l clodinafop-prop-argyl + antidote) at rate of 300 ml/ha, applied at the same
stage can be applied in seed production stands of perennial ryegrass. Herbicide for grass
weeds control – Grasp 25SK (250 g/l tralkoxydim) + Atplus 463 at rate of 1000 + 1000 ml/
ha showed phytotoxic effect on L. perenne and caused the reduction of seed and dry biomass
productivity. Realization of the biological potential concerning seed and dry mass
yield of perennial ryegrass demands application of selective herbicides Arat, Korida 75 VDG
and Cambio SL in control of broadleaf weeds and Topik 080EK in control of grass weeds. Tokom 2008-2010, na eksperimentalnom polju Instituta za krmno bilje, Pleven, na slabo
propusnom černozemu sprovedeno je istraživanje sa ciljem da se utvrdi selektivnost nekih
herbicida prema engleskom ljulju (Lolium perenne L.) i njihov uticaj na prinos semena. Kao rezultat
istraživanja dobijeno je sledeće: herbicidi za suzbijanje širokolisnih korova – Arat (500 g/l
dicamba + 250 g/l tritosulfuron) u količini primene 100 ml/ha, Korida 75 VDG (750 g/kg tribenuron-
methyl) – 15 g/ha i Cambio SL (320 g/l bentazone + 90 g/l dicamba) – 1250 ml/ha ispoljili
su visoku selektivnost prema engleskom ljulju, kada su primenjeni u fazi 2-4 lista prilikom zasnivanja
useva i u kasnijim godinama gajenja. Herbicid namenjen za suzbijanje travnih korova:
Topik 080EK (80 g/l clodinafop-prop-argyl + antidote) u količini primene 300 ml/ha, kada
se primeni u istoj fazi može da se koristi u engleskom ljulju za proizvodnju semena. Herbicid
za suzbijanje travnih korova – Grasp 25SK (250 g/l tralkoxydim) + Atplus 463 u količini primene
1000 + 1000 ml/ha ispoljio je fitotoksičan efekat na L. perenne i prouzrokovao smanjenje prinosa
semena i suve biomase. Realizacija biološkog potencijala u vezi sa prinosom semena i suve
mase engleskog ljulja zahteva primenu selektivnih herbicida Arat, Korida 75 VDG i Cambio SL
u suzbijanju širokolisnih korova i Topik 080EK u suzbijanju travnih korova.