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 VOLUME Vol.05 Issue04 2025 

PAGE NO. 7-9 

DOI 10.37547/ajahi/Volume05Issue04-02 

 
 
 
 

Insecticidal Activity Of The New PILARURON 50% SC 

Preparation Against Melon Aphid Aphis Gossypii Glov 

(Hemiptera:Aphididae) On Greenhouse-Grown Tomato 

Plants 
 

Alamuratov Rayimjon Abdimurat o‘g‘li 

Institute of Plant Quarantine and Protection Research, Uzbekistan 

 

Abdillayev Marat Ibodillayevich 

Institute of Plant Quarantine and Protection Research, Uzbekistan 

 

Sattorov Shoximardon Xushmamatovich 

Institute of Plant Quarantine and Protection Research, Uzbekistan 

 

 

Received: 09 February 2025; Accepted: 12 March 2025; Published: 08 April 2025 

 

Abstract: In this article, experimental trials were conducted to evaluate the efficacy of a new insecticide 
formulation, PILARURON 50% SC, against Aphis gossypii Glov., a pest currently infesting greenhouse-grown 
tomatoes in our Republic and negatively affecting crop quality. The product was tested at an application rate of 
0,8–1,2 liters per hectare, and its insecticidal activity was determined.   

 

Keywords: Agriculture, vegetables, tomato plant, pest damage, chemical control measures, insecticidal activity. 

 

Introduction: Aphids that harm agricultural crops are 
soft-bodied, small insects, with adults measuring 1,8-
2,1 mm in length. They occur in both winged and 
wingless forms. The winged forms possess two pairs of 
wings, with the forewings being significantly longer 
than the hindwings. Their development is incomplete 
and typically parthenogenetic, involving live birth with 
no pupal stage. Aphid populations consist of different 
morphological forms, including viviparous wingless 
females, oviparous wingless females, viviparous 
winged females, and winged (sometimes wingless) 
males [6;8;9]. 

In greenhouses, two widespread aphid species - Aphis 
gossypii Glov (melon aphid) and Aphis craceivora Koch 
(cowpea aphid) - cause considerable damage to a wide 
range of host plants [10].  Aphids are a serious problem 
in greenhouses, where favorable environmental 
conditions allow them to reach high population 
densities in a short time throughout the year. The 

traditional method of controlling these pests in 
greenhouse conditions is through the use of 
insecticides [11]. 

According to conducted research, several species of 
aphids, which are sucking pests, cause damage in 
tomato fields. When tomato plants are affected during 
the seedling stage, it often results in plant death. If 
infestation occurs later, more than 50% yield loss can 
be observed [5].  

Many species of aphids infest tomato plants from the 
emergence of the first leaves to the end of the 
vegetation period, feeding on the leaves, stems, and 
fruits. This feeding process inhibits the growth and 
development of the plants. Additionally, the sticky 
honeydew secreted by the pests contaminates the 
lower leaf surfaces, disrupting the plant’s metabolic 
processes and thereby reducing both the yield and 
quality of the crop [1;3;4]. 

METHODS 

 

https://doi.org/10.37547/ajahi/Volume05Issue04-02
https://doi.org/10.37547/ajahi/Volume05Issue04-02
https://doi.org/10.37547/ajahi/Volume05Issue04-02
https://doi.org/10.37547/ajahi/Volume05Issue04-02


American Journal Of Agriculture And Horticulture Innovations 8 https://theusajournals.com/index.php/ajahi 

American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) 
 

 

A field trial was conducted in September 2024 in the 
Kibray district of Tashkent region, on the field of 
"Boburkhodja, Nodirkhodja Baraka" LLC, to test the 
effectiveness of the insecticide PILARURON 50% SC 
against Aphis gossypii, one of the main pests of tomato. 
The insecticide was applied at a rate of 0,8–1,2 liters 
per hectare. The timing of pest occurrence and 
population counts were determined using standard 
methods described by Bondarenko N.V., (1978); 
Polyakov et al., (1984) and Osmolovsky G.E., (1980) 
[2;12;13]. 

The trial was conducted during the flowering stage of 
the tomato plants. The experiment included treatment, 
reference, and control variants, each replicated three 
times. Pest counts were recorded before treatment 
and on the 3rd, 7th, 14th, and 21st days post-
treatment. The effectiveness of the insecticide was 
evaluated by comparing it to the control variant. Field 
trials were conducted following the methodological 
guidelines of Khodjaev Sh.T., (2023) [7], and biological 
efficacy was calculated using the methodology and 
formula of Po’ntener W., (1981) [14]. 

RESULTS 

Experimental trials were conducted in September of 
this year to test the effectiveness of the chemical 
preparation PILARURON 50% SC (active ingredient: 
Diafenthiuron 500 litr per hectare) against aphids on 
tomatoes, at application rates of 0,8-1,2 liters per 
hectare. For comparison, Raudo 50% SC 
(Diafenthiuron) at a rate of 1,0 liter per hectare was 
used as a reference standard. 

The trial results for PILARURON 50% SC at application 
rates of 0,8–1,2 litr per hectareare presented in table-
1. According to the data, prior to applying PILARURON 

at 0.8 litr per hectare, the average number of aphids on 
10 tomato leaves was 72,5.  After application, the aphid 
population steadily decreased, reaching 6,3 on day-3, 
4,5 on day-7, 8,3 on day-14, and 12,5 on day-21.  

The biological efficacy was 93,7% on day-3, 96.5% on 
day-7, 92,4% on day-14, and 87,8% on day-21. 

When applied at 1,2 litr per hectare, the average 
number of aphids on 10 tomato leaves was 67,3 before 
treatment. This number decreased to 4.8 on day-3, 3,1 
on day-7, 6,5 on day-14, and 10,3 on day-21. The 
biological efficacy was 94,8%, 97,4%, 93,6%, and 89,2% 
respectively. In the untreated control variant, the 
number of aphids increased over time. From an initial 
average of 64,6 per 10 leaves, the count rose to 89,5 on 
day-3, 114,3 on day-7, 98,4 on day-14, and 91,5 on day-
21. 

In the reference treatment using Raudo 50% SC, the 
initial aphid count was 81,5 per 10 leaves. After 
application, the counts dropped to 7,5 (day-3), 5.9 (day-
7), 11,5 (day-14), and 14,7 (day-21), with corresponding 
biological efficacy rates of 93,4%, 95,9%, 90,7%, and 
87,3%. The experimental and reference variants both 
demonstrated peak biological efficacy on day-7, after 
which the insecticidal effect gradually declined. 

CONCLUSION 

When applied at rates of 0.8-1.2 litr per hectare, 
PILARURON 50% SC demonstrated high biological 
efficacy (96,5–97,4%) on the 7th day against Aphis 
gossypii, a harmful pest of greenhouse-grown 
tomatoes. The formulation is user-friendly and readily 
forms a working solution when mixed with water. No 
phytotoxic effects on the plants were observed. 

 

Table-1 

Field Efficacy of the Chemical Preparation "PILARURON 50% SC" Against Aphids 

on Tomato (Field Trial, Tashkent Region, Qibray District, “Boburkhodja 

Nodirkhodja Baraka” LLC, Manual Application, September-6, 2024). 

№ 
Experimenta

l options 

Active 

ingredien

t 

Prepara

tion 

consu

mption 

rate 

Average number of pests per 10 

leaves, units Biological efficacy %, 

days Before 

spraying 

medicine 

Дори сепилгандан 

кейинги кунлар 

3 7 14 21 3 7 14 21 

1. 
PILARURO

N 50% SC  

Diafenthi

uron 500 

g/l. 

0,8 72,5 6,3 4,5 8,3 12,5 93,7 96,5 
92,

4 
87,8 

2. PILARURO Diafenthi 1,2 67,3 4,8 3,1 6,5 10,3 94,8 97,4 93, 89,2 



American Journal Of Agriculture And Horticulture Innovations 9 https://theusajournals.com/index.php/ajahi 

American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) 
 

 

N 50% SC  uron 500 

g/l. 

6 

3. 
Raudo 50% 

SC. 

(standard). 

Diafenthi

uron 500 

g/l. 

1,0 81,5 7,5 5,9 
11,

5 
14,7 93,4 95,9 

90,

7 
87,3 

4. 
Control (no 

work done). 
-  64,6 89,5 

11

4,3 

98,

4 
91,5 - - - - 

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