TY  - CONF
AU  - Kostić, Igor
AU  - Krnjajić, Slobodan
AU  - Radojković, Aleksandar
AU  - Radović, Marko
AU  - Savić, Slavica M.
AU  - Kostić, Miroslav
AU  - Mitrović, Jelena
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2744
AB  - Alumina powders were obtained by auto combustion method and calcined for 1 h at
temperatures ranging from 1000ºC to 1200ºC. X-ray powder diffraction analysis revealed an
overwhelming presence of γ–Al2O3 for the powder calcined at 1000ºC, while at 1200ºC only
the presence of α–Al2O3 was detected. Insecticide properties of these powders were
investigated on bean weevil (Acanthoscelides obtectus Say). Mortality of treated and
untreated male and female adults was checked in a period of 7 days. The powder calcined at
1200ºC was the most efficient, and 100% mortality of both male and female insects were
reached after 7 days of exposure. It was also observed that insecticide efficiency increased
with the increase of α–Al2O3 phase present in the powders and the female insects were less
susceptible to the powders’ toxicity in general. Scanning electron microscope analysis of the
treated adults with Al2O3 indicated that mortality of bean weevils can be related to adsorption
of the powders onto their exoskeleton. Development of F1 progeny was similar for all the
powders and the number of hatched larvae was significantly reduced in comparison with the
untreated seeds, while the percentage of damaged seeds dropped from 70% to 15%. These
results suggest that relatively cheap and non-toxic α–Al2O3 powders can be considered for use
in pest control, especially in organic seed production
PB  - 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina
C3  - 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina
T1  - Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say)
EP  - 948
SP  - 943
VL  - 6
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2744
ER  - 

@conference{
author = "Kostić, Igor and Krnjajić, Slobodan and Radojković, Aleksandar and Radović, Marko and Savić, Slavica M. and Kostić, Miroslav and Mitrović, Jelena and Branković, Zorica and Branković, Goran",
year = "2015",
abstract = "Alumina powders were obtained by auto combustion method and calcined for 1 h at
temperatures ranging from 1000ºC to 1200ºC. X-ray powder diffraction analysis revealed an
overwhelming presence of γ–Al2O3 for the powder calcined at 1000ºC, while at 1200ºC only
the presence of α–Al2O3 was detected. Insecticide properties of these powders were
investigated on bean weevil (Acanthoscelides obtectus Say). Mortality of treated and
untreated male and female adults was checked in a period of 7 days. The powder calcined at
1200ºC was the most efficient, and 100% mortality of both male and female insects were
reached after 7 days of exposure. It was also observed that insecticide efficiency increased
with the increase of α–Al2O3 phase present in the powders and the female insects were less
susceptible to the powders’ toxicity in general. Scanning electron microscope analysis of the
treated adults with Al2O3 indicated that mortality of bean weevils can be related to adsorption
of the powders onto their exoskeleton. Development of F1 progeny was similar for all the
powders and the number of hatched larvae was significantly reduced in comparison with the
untreated seeds, while the percentage of damaged seeds dropped from 70% to 15%. These
results suggest that relatively cheap and non-toxic α–Al2O3 powders can be considered for use
in pest control, especially in organic seed production",
publisher = "6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina",
journal = "6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina",
title = "Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say)",
pages = "948-943",
volume = "6",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2744"
}

Kostić, I., Krnjajić, S., Radojković, A., Radović, M., Savić, S. M., Kostić, M., Mitrović, J., Branković, Z.,& Branković, G.. (2015). Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say). in 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina
6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina., 6, 943-948.
https://hdl.handle.net/21.15107/rcub_rimsi_2744

Kostić I, Krnjajić S, Radojković A, Radović M, Savić SM, Kostić M, Mitrović J, Branković Z, Branković G. Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say). in 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina. 2015;6:943-948.
https://hdl.handle.net/21.15107/rcub_rimsi_2744 .

Kostić, Igor, Krnjajić, Slobodan, Radojković, Aleksandar, Radović, Marko, Savić, Slavica M., Kostić, Miroslav, Mitrović, Jelena, Branković, Zorica, Branković, Goran, "Alumina powders as novel non-toxic insecticide against bean weevil (Acanthoscelides obtectus Say)" in 6th International Scientific Agricultural Symposium „Agrosym 2015“, Jahorina, 6 (2015):943-948,
https://hdl.handle.net/21.15107/rcub_rimsi_2744 .

TY  - CONF
AU  - Radojković, Aleksandar
AU  - Radović, Marko
AU  - Krnjajić, Slobodan
AU  - Kostić, Igor
AU  - Mitrović, Jelena
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2336
AB  - Alumina powders synthesized by combustion method were applied on
uninfested grains of bean to examine their insecticide effect against bean weevil
(Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor
solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder
properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h
showed only the presence of α–Al2O3 phase. SEM analysis revealed difference
between the samples in respect to particle size, which varied from nano- and
submicron size to characteristic rectangular particles of several µm and larger. The
powder obtained from the solution with the pH value of 10 had the highest content
of submicron and nanosized particles. Mortality rate of both male and female insects
after seven days of exposure was the highest right for this sample, indicating that the
particle size has the greatest influence on insecticide properties of alumina powders.
Thus, by increasing the pH of the precursor solution it is possible to prevent higher
degree of particles agglomeration. The lowest insecticide efficiency of the powder
synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid
that allowed higher coarsening rate of the particles. When it comes to citric/nitric
molar ratio at pH = 8, it had no significant effect on mortality rates, which were
higher for male insects in general, while a slight efficiency trend was observed
towards fuel lean region, i.e. when the ratio was ≤ 0.8.
PB  - Društvo za keramičke materijale Srbije
C3  - 3rd Conference of the Serbian Society for Ceramic Materials
T1  - INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS
SP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2336
ER  - 

@conference{
author = "Radojković, Aleksandar and Radović, Marko and Krnjajić, Slobodan and Kostić, Igor and Mitrović, Jelena and Branković, Zorica and Branković, Goran",
year = "2015",
abstract = "Alumina powders synthesized by combustion method were applied on
uninfested grains of bean to examine their insecticide effect against bean weevil
(Acanthoscelides obtectus). Effects of pH value (6, 8 and 10) of the precursor
solution, as well as citric/nitric molar ratio (0.5, 0.8 and 1.2) on the powder
properties were observed. XRD analysis of the samples calcined at 1200 ºC for 1 h
showed only the presence of α–Al2O3 phase. SEM analysis revealed difference
between the samples in respect to particle size, which varied from nano- and
submicron size to characteristic rectangular particles of several µm and larger. The
powder obtained from the solution with the pH value of 10 had the highest content
of submicron and nanosized particles. Mortality rate of both male and female insects
after seven days of exposure was the highest right for this sample, indicating that the
particle size has the greatest influence on insecticide properties of alumina powders.
Thus, by increasing the pH of the precursor solution it is possible to prevent higher
degree of particles agglomeration. The lowest insecticide efficiency of the powder
synthesized at pH = 6 can be prescribed to a weak chelating effect of the citric acid
that allowed higher coarsening rate of the particles. When it comes to citric/nitric
molar ratio at pH = 8, it had no significant effect on mortality rates, which were
higher for male insects in general, while a slight efficiency trend was observed
towards fuel lean region, i.e. when the ratio was ≤ 0.8.",
publisher = "Društvo za keramičke materijale Srbije",
journal = "3rd Conference of the Serbian Society for Ceramic Materials",
title = "INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS",
pages = "76",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2336"
}

Radojković, A., Radović, M., Krnjajić, S., Kostić, I., Mitrović, J., Branković, Z.,& Branković, G.. (2015). INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS. in 3rd Conference of the Serbian Society for Ceramic Materials
Društvo za keramičke materijale Srbije., 76.
https://hdl.handle.net/21.15107/rcub_rimsi_2336

Radojković A, Radović M, Krnjajić S, Kostić I, Mitrović J, Branković Z, Branković G. INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS. in 3rd Conference of the Serbian Society for Ceramic Materials. 2015;:76.
https://hdl.handle.net/21.15107/rcub_rimsi_2336 .

Radojković, Aleksandar, Radović, Marko, Krnjajić, Slobodan, Kostić, Igor, Mitrović, Jelena, Branković, Zorica, Branković, Goran, "INSECTICIDE EFFECT OF ALUMINA POWDERS AGAINST - BEAN WEEVILS" in 3rd Conference of the Serbian Society for Ceramic Materials (2015):76,
https://hdl.handle.net/21.15107/rcub_rimsi_2336 .