“ZAMONAVIY BIOLOGIYANING DOLZARB MUAMMOLARI VA
RIVOJLANISH ISTIQBOLLARI”
xalqaro ilmiy-amaliy anjuman materiallari
adu.uz
universaljurnal.uz
96
UDK: 632.7:633.11
INFESTATION LEVELS OF SUNN PEST (EURYGASTER INTEGRICEPS PUT.) AND
CEREAL LEAF BEETLE (OULEMA MELANOPUS L.) IN AUTUMN WHEAT FIELDS
1
Alamuratov Rayimjon Abdimurot o‘g‘li.,
2
Bababekov Qaladar
1,2
Research Institute of Plant Quarantine and Protection, Tashkent Region
muslimarayimjonovna91@mail.com
.
https://doi.org/10.5281/zenodo.15591199
Abstract:
Monitoring of the Occurrence Level of
Eurygaster integriceps
and
Olema melanopus
in Autumn Wheat Fields of Sirdarya Region. In the farmlands of districts in Sirdarya region,
monitoring was conducted to determine the occurrence level of the harmful pests
Eurygaster
integriceps
and
Olema melanopus
, which pose a serious threat to crop yield in autumn wheat fields.
The pest density per 0.25 m² area was assessed.
Keywords:
Wheat, pest, chewing insect,
Eurygaster integriceps
,
Olema melanopus
, larva,
adult stage.
Резюм
e:
Мониторинг
степени
появления
вредителей
Eurygaster integriceps
и
Olema
melanopus
на
озимых
пшеничных
полях
Сирдарьинской
области
.
С
целью
определения
степени
распространения
опасных
вредителей
,
таких
как
Eurygaster integriceps
и
Olema
melanopus,
представляющих
серьёзную
угрозу
урожайности
,
на
приусадебных
участках
и
полях
озимой
пшеницы
в
районах
Сирдарьинской
области
был
проведён
мониторинг
.
Плотность
вредителей
оценивалась
на
площади
0,25
м
².
Ключевые
слова
:
пшеница
,
вредители
,
грызущие
насекомые
,
Eurygaster integriceps
,
Olema melanopus
,
личинка
,
взрослая
стадия
.
Anatasiya:
Sirdaryo viloyatining kuzgi bug‘doy dalalarida Eurygaster integriceps va Olema
melanopusning paydo bo‘lish darajasi monitoringi. Sirdaryo viloyati tumanlari tomorqalarida kuzgi
bug‘doy maydonlarida hosildorlikka jiddiy xavf tug‘diruvchi Eurygaster integriceps va Olema
melanopus kabi zararli zararkunandalarning tarqalish darajasini aniqlash maqsadida monitoring
o‘tkazildi. 0,25 m² maydonga zararkunandalar zichligi baholandi.
Kalit so‘zlar:
Bug'doy, zararkunanda, kemiruvchi,
Eurygaster integriceps
,
Olema melanopus
,
lichinka, imago bosqichi.
Introduction:
Cereal crops rank first among the major agricultural products used for human
nutrition worldwide, with wheat occupying the top position as the primary food source [4]. Owing to
its adaptability to diverse climatic conditions,
Triticum spp.
is cultivated extensively across the globe
and serves as a staple food for more than half of the world’s population. Global wheat production is
estimated at approximately 770 million tons [5].
Its significance as a major food crop grown in both irrigated and arid regions further highlights
its value. However, various biotic and abiotic stress factors reduce wheat yield and quality and can
sometimes lead to complete crop failure [7]. The varying climate conditions driven by global warming
and climate change contribute to the emergence of abiotic stress factors in wheat. Additionally,
certain periods witness the appearance or population surges of pests and pathogens that exceed
economic damage thresholds [17].
In recent years, cereal leaf beetles (
Oulema melanopus
) and sunn pests (
Eurygaster integriceps
)
have caused considerable damage to wheat yield [3;20]. In the absence of chemical treatments and
other protective measures, sunn pests alone can lead to yield losses of up to 30% in barley and 50–
100% in wheat [2;14]. The damage caused by
O. melanopus
has been documented in Syria, India,
Pakistan, Iran, the USA, and Canada, resulting in yield losses of up to 55% in spring wheat and 23%
in winter wheat [9]. Larvae cause more severe damage than adults and are reported to consume 1 to
10 times more plant biomass relative to their div weight [6].
“ZAMONAVIY BIOLOGIYANING DOLZARB MUAMMOLARI VA
RIVOJLANISH ISTIQBOLLARI”
xalqaro ilmiy-amaliy anjuman materiallari
adu.uz
universaljurnal.uz
97
To monitor the major pests threatening wheat productivity in our country, experiments were
conducted in 2025 on winter wheat fields across three districts of the Sirdarya region. These studies
aimed to determine the incidence and density of cereal leaf beetles (
Oulema melanopus
L.) and sunn
pests (
Eurygaster integriceps
Put). The methodology followed standard procedures as outlined by
Golub V.B. et al. (1980), Dorokhova G.I. (1995), Polyakov I. et al. (1984), and Lowe (1984)
[10;15;16;18;19].
During the tillering phase of wheat, observations along the borders and surrounding areas of
wheat fields revealed that
Eurygaster integriceps
and
Oulema melanopus
had emerged from
hibernation and began feeding on wild grass species of the Poaceae family located at field edges and
nearby vegetation. In farms where the presence of sunn pest was confirmed, 20 samples (each
measuring 0.25 m² or 50x50 cm) were collected, and the pest populations were counted and recorded.
1- figure. Eurygaster integricyeps
oviposition process.
2- figure. Olema melanopus
Monitoring of Sunn Pest and Sawfly Infestation in Winter Wheat Fields of Sirdaryo Region,
2025. In Sirdaryo region, a total of 73,000 hectares were sown with winter wheat for the 2025 harvest.
Pest distribution forecasting covered an area of 172,562 hectares, including 66,910 hectares predicted
to be infested by
Eurygaster integriceps
and 37,237 hectares by
Olema melanopus
. In April of this
year, field trials were conducted to assess the distribution levels of these pests across the region (Table
1). In Khavast district, winter wheat was sown on 8,000 hectares. In the “Abdullabekov Abbos” farm
located in the Farhod area, which covers 11.0 hectares, monitoring revealed
E. integriceps
larvae at
a density of 1.2 individuals per 0.25 m² and
O. melanopus
larvae at 4.3 individuals. Similarly, in the
“Elyor o‘g‘li Asilbek” farm (13.4 ha), the density was 1.3 individuals for
E. integriceps
and 4.6 for
O. melanopus
per 0.25 m².
In Boyovut district, 11,500 hectares were allocated for winter wheat cultivation. In the “Alp-
Jamol” farm (7.0 ha) located in the G‘allakor area, 2.0
E. integriceps
and 5.1
O. melanopus
larvae
per 0.25 m² were recorded. Meanwhile, in the “Zur Ziyokor” farm (9.2 ha) located in the Navbaxor
area, 1.1 and 6.3 individuals per 0.25 m² of
E. integriceps
and
O. melanopus
, respectively, were
identified (Figures 1 and 2).
In Oqoltin district, winter wheat was planted over 15,000 hectares. In the S. Siddiqov area,
where a total of 1,015.1 hectares were planted, monitoring in the “Agro Oqoltin Ko‘rki” farm (5.1
ha) revealed 0.9
E. integriceps
and 5.1
O. melanopus
individuals per 0.25 m². Similarly, in the
“Ulug‘bek Shakin Sharof” farm (16.0 ha) located in the Andijon area, the same density of 0.9 and 5.1
individuals per 0.25 m² was found for
E. integriceps
and
O. melanopus
, respectively.
In Sardoba district, 12,000 hectares were sown with winter wheat. In the Paxtaobod area, where
948.4 hectares were under cultivation, the “Oqqayin” farm (9.1 ha) exhibited densities of 1.5
E.
integriceps
and 7.0
O. melanopus
individuals per 0.25 m². In the “Qo‘shchinor Do‘stlik Yeri” farm
(10.3 ha), located in the Qo‘shchinor area, monitoring showed 1.7
E. integriceps
and 6.8
O.
melanopus
larvae per 0.25 m². Based on the results of the pest monitoring in the districts of Sirdaryo
region, appropriate measures and timely implementation of chemical and biological control strategies
were recommended to effectively mitigate the impact of these pests.
Table-1
“ZAMONAVIY BIOLOGIYANING DOLZARB MUAMMOLARI VA
RIVOJLANISH ISTIQBOLLARI”
xalqaro ilmiy-amaliy anjuman materiallari
adu.uz
universaljurnal.uz
98
Distribution of Sunn Pest (Eurygaster integriceps) and Sawfly (Olema melanopus) in
winter wheat fields of farms across districts of Sirdaryo region, 2025.
T/r
Region
Distri
cts
Areas
Farmer
Enterprises
Land plot
Pest infestation density per 0.25 m²
E. integricyeps
O. melanopus
1.
Sirdary
o
Xovos
Farxod
Abdullabekov
Abbos
11,0
1,2
4,3
Elyor o‘li
Asilbek
13,4
1,3
4,6
Boyovut
G‘
al
lakor
Alp-Jamol
7,0
2,0
5,1
Navbah
or
xududi
Zur ziyokor
9,2
1,1
6,3
Oqolt
in
S.Siddiqov
Agro Oqoltin
ko‘rki
5,1
2,7
4,8
Andijon
Ulug‘bek Shakin
Sharof
16,0
0,9
5,1
Sardoba
Paxtaobod
Oqqayin
9,1
1,5
7,0
Qo‘
shchin
or
Qo‘shchinor
do‘stlik yeri
10,3
1,7
6,8
REFERENCES
1. Ç
ığ
F, Erman M, Behçet I, Bektas H, Sonkurt M, Mirzapour M, Ceritoglu M (2022)
Mitigation of drought stress in wheat by bio-priming by PGPB containing ACC deaminase activity.
Atatürk University Journal of Agricultural Faculty, 53(1):51-57.
2. Darkoh C, El-Bouhssini M, Baum M, Clack B (2010) Characterization of a prolyl
endoprotease from Eurygaster integriceps Puton (Sunn pest) infested wheat. Archives of Insect
Biochemistry and Physiology 74(3):163–178.
3. Dizlek H (2018) A biochemical factor that significantly disrupt the wheat quality: insect
enzyme salivary. In: 2nd International Congress on Advances in Bioscience and Biotechnology
(ICABB), Podgorica, Montenegro, 26–30 June 2018. Book of Proceedings 33–35.
4. Erenstein O, Poole N, Donovan J (2022) Role of staple cereals in human nutrition:
Separating the wheat from the chaff in the infodemics age. Trends Food Sci Technol 119:508-513.
https://doi.org/10.1016/j.tifs.2021.11.033
5. FAO (2022) Wheat production on the
World. https://www.fao.org/faostat/en/#data. Accessed 20 September 2023
“ZAMONAVIY BIOLOGIYANING DOLZARB MUAMMOLARI VA
RIVOJLANISH ISTIQBOLLARI”
xalqaro ilmiy-amaliy anjuman materiallari
adu.uz
universaljurnal.uz
99
6. Gutierrez A.P, Denton WH, Shade R, Maltby H, Burger T, Moorehead G (2014) The within-
field dynamics of the cereal leaf beetle (
Oulema melanopus
(L.)) in wheat and oats. J Anim Ecol
43:627–640.
7. Higgins S, Serada V, Herron B, Gadhave KR, Kurouski D (2022) Confirmatory detection
and identification of biotic and abiotic stresses in wheat using Raman spectroscopy. Front. Plant Sci
13:1035522. https://doi.org/10.3389/fpls.2022.1035522.
8. Islamo
ğ
lu, M., Korno
ş
or, S. and Tarla,
Ş
., 2011. Developments on the control of Sunn pest,
Eurygaster spp. (Heteroptera: Scutelleridae) in Turkey (1928 – 2010). Turk. J. biol. Contr., 2: 63–78.
9.. Kher S.V, Dosdall LM, Cárcamo HA (2011) The cereal leaf beetle: biology, distribution and
prospects for control. Prairie Soils Crop 4:32–41.
10. Lowe H. The assessvent of populations of the aphid Sitobion avenae in field trials// J. agr.
Sc. – 1984. -
№
2. – P.487-497.
11. Mahapatra, B.S., Dey, P. (2022). Integrated Management Practices for Incremental Wheat
Productivity. In:
et al.
New Horizons in Wheat and Barley Research. Springer, Singapore.
https://doi.org/10.1007/978-981-16-4134-3_13
12. Neimorovets V (2020) Review of the genus Eurygaster (Hemiptera: Heteroptera:
Scutelleridae) of Russia. Zootaxa. 4722(6):501–539.
13. Olfert O, Weiss RM, Woods S, Philip H, Dosdall L (2004) Potential distribution and relative
abundance of an invasive cereal crop pest,
Oulema melanopus
(Coleoptera: Chrysomelidae), in
Canada. Can Entomol 136:277–287.
14. Parker B.L, Amir-Maafi M, Skinner M, Kim J, EL-Bouhssini M (2011) Distribution of
Sunn Pest, Eurygaster integriceps Puton (Hemiptera: Scutelleridae), in overwintering sites. J Asia Pac
Entomol 14(1):83–88. https://doi.org/10.1016/j.aspen.2010.10.005.
15.. Polyakov I.Y Identification of agricultural pests and signaling the timing of their control.
M. : Rosselkhoznadzor, 1964. 204 p.
16. Polyakov I. Ya., Persov M. P., Smirnov V. A. Forecast of development of pests and diseases
of agricultural crops (with a workshop) : textbook for higher agricultural educational institutions in
the specialty «Plant protection». L. : Kolos, 1984. 318 p.
17. Wang B.X, Hof AR, Ma CS (2022) Impacts of climate change on crop production, pests
and pathogens of wheat and rice. Front. Agric. Sci. Eng 9(1):4-18.
18.
Голуб
В
.
Б
.,
Ковалева
Д
.
А
.,
Шуровенков
Ю
.
Б
.
и
др
.
Энтомологические
и
фитопатологические
коллекции
,
их
составление
и
хранение
. –
Воронеж
: «
Изд
.
Воронежского
Университета
», 1980. – 224
с
.
19.
Дорохова
Г
.
И
.
Характер
влияния
биотических
факторов
на
репродуктивное
поведение
галлицы
афидомизы
в
системе
растение
–
тли
–
галлица
/
Защита
растений
в
условиях
реформирования
агропромышленного
комплекса
:
экономика
,
эффективность
,
экологичность
». –
Санкт
-
Петербург
, 1995. –
С
. 187.
20.
Павлюшин
В
.
А
.,
Вилкова
Н
.
А
.,
Сухорученко
Г
.
И
.,
Нефедова
Л
.
И
.,
Капусткина
А
.
В
. 2015.
Вредная
чере
пашка
и
другие
хлебные
клопы
.
СПб
., 280
с
.
