Maize, Sunflower and Barley Sensitivity to the Residual Activity of Clomazone in Soil
Osetljivost kukuruza, suncokreta i ječma na rezidualno delovanje klomazona u zemljištu
Author
Gajic Umiljendic, Jelena
Jovanovic-Radovanov, Katarina
Radivojevic, Ljiljana
Santric, Ljiljana
Djurovic, Rada
Djordjevic, Tijana
Keywords
ClomazoneMaize
Sunflower
Barley
Bioassay
Chlorophylls
Soil
Klomazon
kukuruz
suncokret
ječam
biotest
černozem
Metadata
Show full item recordAbstract
Sensitivity of maize, sunflower and barley to clomazone residues in loamy soil was
assessed in the study using bioassay. Clomazone was applied at a series of concentrations
from 0.12 to 12 mg a.i./kg of soil. After 14 days, morphological (shoot height, fresh and dry
weight) and physiological (content of carotenoids, chlorophyll a and chlorophyll b) parameters
were measured. The results showed that morphological parameters are not valid indicators
of clomazone sensitivity. Based on the results showing inhibition of the physiological
parameters, I50 values were calculated and used to estimate the difference in sensitivity
between the species tested. Sunflower was the most sensitive species, while the difference
in sensitivity between maize and barley was not significant.
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 ilovače, metodom biotesta. Klomazon je primenjen u seriji koncentracija
0,12-12 mg a.s./kg zemljišta. Nakon 14 dana rasta biljaka mereni su morfološki (visina,
sveža i suva masa izdanka) i fiziološki parametri (sadržaj karotenoida, hlorofila a i hlorofila
b). Konstatovano je da morfološki parametri nisu pouzdano merilo osetljivosti na klomazon.
Prema ostvarenim procentima inhibicije za merene fiziološke parametre izračunate su vrednosti
I50, a na osnovu njih utvrđene su razlike u osetljivosti ispitivanih biljnih vrsta. Najosetljiviji
je bio suncokret, dok se kukuruz i ječam nisu međusobno značajno razlikovali.