Biological Efficacy of Herbicides for Weed Control in Noncropped Areas
Biološka efikasnost herbicida u suzbijanju korova na strništu
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Author
Dimitrova, Tsvetanka
Keywords
HerbicidesEfficacy
Weeds
Noncropped areas
Herbicidi
efikasnost
korovi
neobrađene površine
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Show full item recordAbstract
An increasing problem facing agricultural producers is the invasion of weeds, perennial
in particular, so that implementation of industrial technologies is impossible without
their highly efficient and rational control. For the purpose of studying efficient herbicides
for weed control in noncropped areas (stubbles), a biological study of five total systemic
herbicides was conducted in areas under natural weed infestation and pressure from other
surrounding weeds at the Institute of Forage Crops in Pleven in 2005-2007. The trials were
carried out in field conditions using the block method with plot size of 20 m². Treatment
was conducted at the predominant stage of budding of perennial dicotyledonous weeds
and earing of monocotyledonous weeds. Herbicidal efficacy was recorded on the EWRS
9-score scale (0-100% killed weeds = score 9-1).
It was found that treatment of noncropped areas (stubbles) with the total systemic herbicides
Touchdown System 4 (360 g/l glyphosate); Cosmic (360 g/l glyphosate); Roundup
Plus (441 g/l glyphosate potassium salt); Leon 36 SL (360 g/l glyphosate) and Glyphos Super
45 SL (450 g/l glyphosate) was highly efficient, so that it was a successful element of a
strategy for controlling weeds of different biological groups, and was especially effective
against perennial weeds. Poljoprivredni proizvođači se sve češće suočavaju sa problemom invazije korova, naročito
višegodišnjih, tako da je primena industrijske tehnologije nemoguća bez njihovog efikasnog
i racionalnog uklanjanja. Da bi se ispitala efikasnost herbicida u suzbijanju korova na
neobrađenim površinama (strništima), tokom perioda 2005-2007. godine, u Institutu za krmno
bilje u Plevenu sproveli smo biološko istraživanje pet totalnih sistemskih herbicida na površinama sa prirodnom infestacijom i drugim korovima u okruženju. Ogledi su izvedeni
u polju, a korišćen je blok sistem sa veličinom elementarne parcele od 20 m². Tretmani su
izvedeni u stadijumu pupoljka kod višegodišnjih dikotiledonih korova i u stadijumu klasanja
kod monokotiledonih korova. Efikasnost herbicida je merena na skali EWRS od 9 poena
(0-100% uništenih korova = ocene 9-1).
Rezultati pokazuju da su tretmani neobrađenih područja (strništa) totalnim sistemskim
herbicidima Touchdown System 4 (360 g/l glifosat); Cosmic (360 g/l glifosat); Roundup Plus
(441 g/l glifosat kalijumova so); Leon 36 SL (360 g/l glifosat) i Glyphos Super 45 SL (450 g/l
glifosat) postigli visoku efikasnost, tako da predstavljaju uspešan element u strategiji suzbijanja
korova iz različitih bioloških grupa, s tim da je najznačajniji rezultat postignut kod višegodišnjih
korova.