HERBICIDAL ACTIVITY OF SULFONYLUREAS IN THE SERIES OF BICYCLIC ALKYLQUINAZOLONES H.U. Mamadaminov, R.P. Zokirova, S. M. Allabergenova, U. M. Yakubov, Sh.U. Yoldoshev, B. J. Elmuradov S.Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences Republic of Uzbekistan, 100170, Tashkent, M. Ulugbek st., 77 e-mail: ubaydullo13@mail.ru
Nowadays, the use of chemical protection agents in agriculture is increasing. The
global market share of agrochemicals is worth 60 billion dollars a year and continues to
increase. Herbicides take the largest share, 40-60% in different parts of the world,
depending on crop dominance. Sulphonylureas are the class of herbicides with the
highest biological activity.
Chlorsulfuron , the first representative of this class of
compounds, was produced by the DuPont company in 1982. The use of sulfonylureas in
low doses (10-100 g/ha), high selectivity, and safety for humans and animals increase
the demand for compounds of this class.
Therefore, it is very urgent to carry out targeted synthesis and chemical modification
of new, potentially biologically active compounds containing sulfonylurea residues, to
determine their physical, chemical and biological properties, to create new preparations
based on selected “candidate” substances [1, 2].
We studied the herbicidal activity of new bicyclic quinazoline derivatives containing
sulfonylurea residues on wheat seeds
“Grom” . The experiment adopts the Rakitin
method [2].
"Granstar" herbicide was used as standard. The newly synthesized
sulfonylurea derivatives
US-16 and
US-17 were studied at different concentrations (1-
0.01%). Preliminary results indicated that compound
