Poster presentation
310
MEFOSIN 25% aq.sol. IS AN EFFECTIVE HERBICIDE COMPOSITION
E.O. Rakhmatov, Sh.U.Yuldoshev, A.Sh. Abdurazokov, Kh.U. Mamadaminov
S.Yu. Yunusov Institute of the Chemistry of Plant Substances AS RU,
st. Mirzo-Ulugbek, 77, 100170 Tashkent,
e-mail: elyor-raxmatov@mail.ru
In recent years, annual and dicotyledonous weeds have been increasing in the fields
of our country. They develop quickly compared to the crop,
prevent the crop from
absorbing sunlight, absorb 30-40% of the nutrients and irrigation water given to the
crop, and reduce the yield and quality of agricultural plants by 20-50% [1].
Аs a result of
intensive use of herbicides, the biological effectiveness of the herbicide
is significantly reduced due to the emergence of weed biotypes resistant to this drug. To
destroy such weeds, the dosage of herbicide should be increased. As a result, the price
of herbicides will increase, which in turn will increase the price of agricultural products.
The results of the preliminary study on testing the Mefosin
composition developed
by scientists of our institute [2] showed that the composition demonstrated a highly
effective herbicidal activity against one-year spike and dicotyledonous weeds. (Table 1).
Table 1. Comparative efficacy of Mefosin 25% aq.sol composition on weeds
Types
of weeds
% Weed drying due to herbicide application.
Mebinol
1.5 kg/ha
Glyphosate
1.5 kg/ha
Mefosin composition
1.5 kg/ha.
Bromus sterilis
10
15
100
Avena fatua
9
10
100
Apéra spíca-vénti
10
15
100
Póa ánnua
10
10
100
Rumex obtusifolius
10
15
100
Capsella bursa-pastoris
15
10
100
Thlaspi arvense
L
10
15
100
Brassica napus
10
10
100
Euphorbia helioscopia
10
15
100
Galium aparine L
10
15
100
Lamium amplexicaule L
10
10
100
Veronica arvensis
10
15
100
Matricaria discoidea
14
12
100
Málva pusílla
10
18
100
Cirsium arvense
0
0
70
Convōlvulus arvēnsis
0
0
85
Cýnodon dáctylon
0
0
40
It should be noted that the herbicidal activity of the composition is much higher than
the activity of Mebinol (2-methyl-5-chlorobenzimidazole)
and Glyphosate herbicides
when used at the same rate, i.e. 1.5 kg/ha. Mefosin 25% aq.sol. - herbicidal composition
showed 40-85% herbicidal activity against perennial weeds.
References:
1. Yasser El-Nahhal, Bayan Wheidi, Said El-Kurdi /Journal
of Encapsulation and
Adsorption Sciences, Vol.6, No.3, September 29, 2016.
2. Patent RUz № IAP05934 (Uzbekistan). Published on 23.08.2019.