A Bioassay Technique to Study Clomazone Residues in Sandy Loam Soil
Mogućnosti korišćenja biotesta za praćenje ostataka klomazona u zemljištu tipa peskuša
Author
Gajic Umiljendic, Jelena
Radivojevic, Ljiljana
Djordjevic, Tijana
Jovanovic-Radovanov, Katarina
Santric, Ljiljana
Djurovic-Pejcev, Rada
Elezovic, Ibrahim
Keywords
SunflowerBioassay
Residues
Maize
Clomazone
Barley
Suncokret
biotest
ostaci
kukuruz
klomazon
ječam
Metadata
Show full item recordAbstract
A bioassay test was conducted to evaluate the sensitivity of maize, sunflower and barley to
clomazone residues in sandy loam soil. Clomazone was applied at different rates from 0.12 to
12 mg a.i./kg of soil. The parameters measured 14 days after treatment were: shoot height, fresh
and dry weight, and content of pigments (carotenoids, chlorophyll a and chlorophyll b). The
results showed that the lowest clomazone concentration caused a significant reduction in all
measured parameters for barley and sunflower shoots. Fresh weight of maize shoots was not
sensitive to clomazone residual activity in soil while the other parameters were highly inhibited.
Nomenclature: clomazone (2-(2-chlorbenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one), maize
(Zea mays L.), sunflower (Helianthus annuus L.), barley (Hordeum vulgare L.) U radu je ispitivana osetljivost kukuruza, suncokreta i ječma na rezidualno delovanje
klomazona u zemljištu tipa peskuša, metodom biotesta. Klomazon je primenjen u seriji
koncentracija 0.12-12 mg a.s./kg zemljišta. Nakon 14 dana rasta biljaka mereni su vegetativni
(visina, sveža i suva masa izdanka) i fiziološki parametri (sadržaj karotenoida hlorofila a i
hlorofila b). Dobijeni rezultati pokazuju da su i najmanje koncentracije klomazona izazvale
značajno smanjenje merenih vegetativnih i fizioloških parametara kod ječma i suncokreta.
Izdanci kukuruza nisu pokazali istu osetljivost prema ostacima klomazona u zemljištu tipa
peskuša pa je sveža masa izdanka ostala nepromenjena u varijantama sa različitim koncentracijama
herbicida, a ostali mereni parametri su bili značajno inhibirani.