Volume 04 Issue 07-2024
16
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
07
Pages:
16-22
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
This article investigates the insecticidal activity of the chemical preparation Antikolorad Max, sus.k., against major
wheat pests such as harmful bugs, slimy worms, wheat thrips, and grain aphids. According to the results of the
experiment, when this preparation was applied at a rate of 0.1-0.15 l/ha, it demonstrated a biological efficiency of 88.6-
92.5% against harmful bugs, 91.6-94.8% against slimy worms, 89.4-95.8% against wheat thrips, and 89.4-93.1% against
aphids 14 days after application.
KEYWORDS
Wheat, pest, larva, chemical preparation, biological efficiency.
INTRODUCTION
Today, one of the critical issues that humanity needs to
address is meeting the food demands of the
population. To fulfill this need, it is essential to achieve
high yields from wheat (Triticum aestivum L.). Wheat
Research Article
EFFICACY OF CHEMICAL CONTROL METHODS AGAINST MAJOR WHEAT
PESTS
Submission Date:
July 21, 2024,
Accepted Date:
July 26, 2024,
Published Date:
July 31, 2024
Crossref doi:
https://doi.org/10.37547/ajahi/Volume04Issue07-04
Alamuratov Rayimjon Abdimurotovich
Scientific Research Institute of Plant Quarantine and Protection, Tashkent Region, Uzbekistan
Bababekov Q
Scientific Research Institute of Plant Quarantine and Protection, Tashkent Region, Uzbekistan
Sagdatova Mahbuba Jurayevna
Scientific Research Institute of Plant Quarantine and Protection, Tashkent Region, Uzbekistan
Mustafayev Khumoyun Buronovich
Scientific Research Institute of Plant Quarantine and Protection, Tashkent Region, Uzbekistan
Journal
Website:
https://theusajournals.
com/index.php/ajahi
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 04 Issue 07-2024
17
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
07
Pages:
16-22
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
ranks first among cereal crops in terms of nutritional
value for humans, accounting for 35% of their food
requirements. However, the main reason for the
decline in wheat yield is the damage caused by pests
that feed on wheat, resulting in significant yield losses.
Among the wheat pests, six species of grain aphids,
four species of harmful bugs, six species of thrips, and
one species of slimy worms are known to cause
significant damage.
One of the main pests widespread in all wheat-growing
regions of Uzbekistan is the harmful bug. Adult bugs
emerge from hibernation in March-April and initially
damage the central leaf part of the plant, followed by
the grain part, causing the whole plant to wilt. The
germination rate of grains from fields infested with
harmful bugs decreases by up to 50%. Additionally,
wheat thrips can reduce yields by 5-13%. Adult thrips
attach to the upper leaf sheath during the stem
elongation phase of wheat, causing significant
damage. Thrips larvae can lead to up to a 20% yield loss.
Scientists have identified 29 species of aphids that
damage wheat yields. During the growth period of
autumn wheat, aphid epidemics cause damage by
sucking cell sap from the leaves. Yield losses due to
aphids range from 7.9% to 34.2%. Some authors have
noted that timely planting of wheat can reduce the
damage caused by aphids. The slimy worm (pyavitsa)
Lema melanopus L. (order Coleoptera, family
Chrysomelidae) is a dangerous pest that significantly
damages wheat, barley, and other cereal crops. Its
larvae undergo four molts to reach adulthood, with the
fourth stage larvae causing the most damage.
Given the above, it is crucial to find effective control
measures against the main wheat pests to preserve
wheat yields. For this purpose, we conducted research
on the effectiveness of the chemical preparation
Antikolorad Max, sus.k., against the main wheat pests.
METHODS
To determine the insecticidal activity of chemical
preparations against the main wheat pests,
experiments were conducted in 2024 on a 7.5-hectare
field of the "Soxibkor agro" farm in Tayloq district,
Samarkand region.
The timing of pest emergence and population counts
were conducted according to the methods of Polyakov
et al. (1984), Osmolovsky G.E., and Bondarenko N.V.
(1978). Pest counts were performed during the stem
elongation and heading phases of wheat. A logarithmic
scale was used to determine the number of pests per
plant and the population density in the wheat field.
The degree of leaf damage was assessed using the 0-5
scale of Stamenkov, S., and Pankov, L. (1991) and the
methods of Rouag N. et al. (2012). The insecticidal
activity of the preparations in field conditions was
determined using the methodological guide of
Khojayev (2004), and biological efficiency was
calculated using Abbott's formula (1925).
Counts were performed on days 3, 7, and 14 after
treatment. Experiments were conducted in three
replicates for each variant, including control
(untreated). A tractor-mounted sprayer was used to
apply the working solution at a rate of 300 liters per
hectare.
RESULTS AND DISCUSSION
Field trials were conducted to determine the
effectiveness of Antikolorad Max, sus.k. (Imidacloprid
+ lambda-cyhalothrin) against major wheat pests at
rates of 0.1-0.15 l/ha (Figure 1).
Volume 04 Issue 07-2024
18
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
04
ISSUE
07
Pages:
16-22
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
Figure 1:
Testing the chemical preparations against pests using a
tractor-mounted sprayer
According to the results, Antikolorad Max, sus.k.
demonstrated a biological efficiency of 78.7% on day 3,
85.0% on day 7, and 88.6% on day 14 at a rate of 0.1 l/ha
against harmful bugs. At a rate of 0.15 l/ha, the
biological efficiency was 82.0% on day 3, 90.4% on day
7, and 92.5% on day 14. The standard preparation Borey,
20% sus.k., showed 78.3% on day 3, 87.3% on day 7, and
89.2% on day 14. In the control variant, the number of
pests increased from 8.1 to 14.1 per plant over 14 days.
Against slimy worms, Antikolorad Max, sus.k.
demonstrated a biological efficiency of 60.0% on day 3,
82.2% on day 7, and 91.6% on day 14 at a rate of 0.1 l/ha.
At a rate of 0.15 l/ha, the biological efficiency was 62.2%
on day 3, 89.5% on day 7, and 94.8% on day 14. The
standard preparation Borey, 20% sus.k., showed 62.0%
on day 3, 86.2% on day 7, and 93.2% on day 14.
Table 1. Biological efficiency of Antikolorad Max, sus.k. against harmful bugs and slimy
worms in wheat (Tayloq district, "Soxibkor agro" farm, Samarkand region, 2024).
№
Experimental
Variants
Active
Ingredient
Applicati
on Rate
(l/ha)
Average Number of Pests
per m2
Biological
Efficiency (%)
Befo-
re
Treat
ment
After Treatment
Days
3
7
14
3
7
14
1.
Harmful bug
1.
Antikolorad
Maks, sus.k
Imidacloprid
+
lambda-
cyhalothrin
0,1
9,1
2,1
2,0
1,8
78,7
85,0
88,6
0,15
8,4
1,7
1,2
1,1
82,0
90,4
92,5
Volume 04 Issue 07-2024
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(ISSN
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VOLUME
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2.
Borey, 20%
sus.k
(standard)
Imidacloprid
+
lambda-
cyhalothrin
0,12
7,9
1,8
1,5
1,3
78,3
87,
3
89,2
3.
Control
-
8,1
8,8
11,9
14,1
-
-
-
2.
Slimy worms
1.
Antikolorad
Maks, sus.k
Imidacloprid
+
lambda-
cyhalothrin
0,1
5,8
2,6
1,2
0,6
60,0
82,2
91,6
0,15
6.3
2,5
0,8
0,4
62,2
89,5
94,8
2.
Borey, 20%
sus.k. (andoza)
Imidacloprid
+
lambda-
cyhalothrin
0,12
6,0
2,4
1,0
0,5
62,0
86,2
93,2
3.
Control
-
-
5.6
5,9
6,8
6,9
-
-
-
The results of our experiments against wheat thrips
and grain aphids are presented in Table 2. The data
show that against wheat thrips, Antikolorad Max,
sus.k. demonstrated a biological efficiency of 62.7% on
day 3, 79.5% on day 7, and 89.4% on day 14 at a rate of
0.1 l/ha. At a rate of 0.15 l/ha, the biological efficiency
was 64.7% on day 3, 83.7% on day 7, and 95.8% on day
14. The standard preparation Borey, 20% sus.k., showed
65.4% on day 3, 86.0% on day 7, and 96.2% on day 14.
Against grain aphids, Antikolorad Max, sus.k.
demonstrated a biological efficiency of 79.5% on day 3,
86.2% on day 7, and 89.4% on day 14 at a rate of 0.1 l/ha.
At a rate of 0.15 l/ha, the biological efficiency was 80.2%
on day 3, 89.4% on day 7, and 93.1% on day 14. The
standard preparation Borey, 20% sus.k., showed 78.4%
on day 3, 89.6% on day 7, and 90.7% on day 14.
Table 2.
Biological efficiency of Antikolorad Max, sus.k. against wheat thrips and grain
aphids in wheat (Tayloq district, "Soxibkor agro" farm, Samarkand region, 2024).
№
Experimental
Variants
Active
Ingredient
Applicati
on Rate
(l/ha)
Average Number of Pests
per m2
Biological
Efficiency (%)
Befo-
re
Treat
ment
After Treatment
Days
3
7
14
3
7
14
1.
Wheat thrips
Volume 04 Issue 07-2024
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VOLUME
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1.
Antikolorad
Maks, sus.k
Imidacloprid+
lambda-
cyhalothrin
0,1
6,6
2,5
1,6
0,6
62,7
79,5
89,4
0,15
6,4
2,3
1,0
0,3
64,7
83,7
95,8
2.
Borey, 20%
sus.k
(standard)
Imidacloprid+
lambda-
cyhalothrin
0,12
7,2
2,2
0,9
0,2
65,4
86,0
96,2
3.
Control
-
-
5,6
5,7
5,4
4,8
-
-
-
2.
Grain aphids
1.
Antikolorad
Maks, sus.k
Imidacloprid+
lambda-
cyhalothrin
0,1
9,2
2,1
1,9
1,7
79,5
86,2
89,4
0,15
8,2
1,8
1,3
1,1
80,2
89,4
93,1
2.
Borey, 20%
sus.k
(standard)
Imidacloprid+
lambda-
cyhalothrin
0,12
7,5
1,8
1,2
1,3
78,4
89,6
90,7
3.
Control
-
-
7,9
8,8
11,9
14,1
-
-
-
CONCLUSION
Based on the results of the field trials, it can be
concluded that Antikolorad Max, sus.k., at a rate of 0.1-
0.15 l/ha, demonstrated a biological efficiency of 88.6-
92.5% against harmful bugs, 91.6-94.8% against slimy
worms, 89.4-95.8% against wheat thrips, and 89.4-
93.1% against aphids 14 days after application.
Therefore, Antikolorad Max, sus.k., at a rate of 0.1-0.15
l/ha, can be considered an effective chemical control
measure against the major pests of cereal crops.
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