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100
RODENTS OF COTTON
Yusupov Ibrahim Mirsaydalievich
Kokand state university ,
Chemistry technology and natural sciences faculty ,
Biology department associate professor ,
Village farm sciences according to philosophy Doctor of Philosophy (Ph.D.)
Phone : (998)-99-904-64-97, E-mail: ibrohimjony999@gmail.com
Abstract :
This in the article cotton to crops damage delivery person main rodent pests – cotton
root , root worm , wire beetles and other insects biological and ecological characteristics ,
distribution status and they with fight measures illuminated . Pests deliverable damage , to
productivity impact and ecological safe struggle methods importance scientific basically
statement Also , agrotechnical and biological struggle measures efficiency analysis made .
Support phrases:
Cotton rodent pests , Cotton Helicoverpa
armigera ), Root Worm
( Agriotes spp.), Wire Beetles , Pests Biology , Development cycle , Pests against wrestling ,
Agrotechnics Events , Biological control Methods , Entomofauna monitoring, Ecological
Security , Productivity impact .
Village farm crops between cotton of the plant place is incomparable . That is why this
crop type pest and from diseases protection to do and high agricultural technology methods using
productivity increase current from issues one is considered . Uzbekistan all cotton farming in the
districts rodent pests of cotton harvest to the targets big damage delivers .
1. Turi – Sleep worm – ( Heliothis armigera Hb .)
(
Oila – tunlams – Noctuidae . Turquoise
– Butterflies – Lepidoptera.)
Wings 30-40 mm when writing , div 12-20 mm long goes . Previous wings in the center
round , its above one by one to beans similar black There is a stain on the back . wings between
colored crescent stain It will be . Insect complete variable to lay eggs of plants growth to the
points and flowers based on places .
Eggs dome-shaped shaped is 0.5-0.7 mm in diameter and 0.4-0.5 mm in height . has .
Eggs initially whitish-gray , then larva to the exit close brown to dream enters . From 4-6 days
after from egg light blue white head larva comes out . Many without delay his head darkens
and his div color and dark blue goes .
Worms fed when full to the ground falls and 5-12 cm to the depth enter to the mushroom
The dome is 17-21 mm , and it is open . pink from yellow reddish-brown changing goes (Figure
1).
Butterfly 30-40mm
Egg 0.5-0.7 mm
Larva
Mushroom 17-21 mm
Figure 1 . I 'm sorry . worm [ 1] .
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In the fall chest worm fed plant in the field 10-12 cm of soil in the depth mushroom in the
phase winter remains . In Koklam in April - May soil temperature to 16
ο
C when rising flying
comes out . Cossack worm In Uzbekistan one 3-4 times a year generation gives .
2. Type – Autumn tunlam – ( Agrotis segetum Schiff.) ( Family - night owls - Noctuidae ).
Category – Butterflies – Lepidoptera.)
Autumn night wings 40 mm when writing enough . Previous wings yellowish-gray , back
wings white colorful Previous wing based on close in place wedge-shaped dark spot , wing in
the center round and above renal There are stains .
Dome-shaped egg bulging , 0.65 mm . Autumn my night mature larva 5 cm tall until
will be . Worm restless if done , round to form enter takes . The dome 14-20 mm long , light
brown in color and last at the joint two tumor will be .
Autumn my night worms many village farm crops also cotton root to the throat close
parts , ground to the page not released seed leaves , rolled up lying down the grass gnawing
(Figure 2) .
Q anodes 40 mm when
writing
Egg dome-shaped
embossed 0.65 mm
Worm 5 cm
The dome length 14-20
mm
Figure 2 . Autumn I am tired .
Damaged cotyledons land to the page out when written in them symmetrical one in a way
holes that there is see possible .
Autumn night one 3 times a year generation giving , bulging in the phase in the soil
hibernates .
3. Tour – G'o'za leaf qurti ( Karadrina ) – ( Spodoptera exigua ( Hübner ).)
(
Oila –
Tunlamlar – Noctuidae . Turkum – Kapalaklar – Lepidoptera.)
Karadrina wings 23-30 mm, div when writing dark grayish is , they have two reddish
colored spots to be with other from the tunnels difference does . Previous on the wings bean-
shaped in the form of stains the first one wing in the center , the second round shaped and
hungrier colored stain wing to the bottom close located will be . Next wings white with a baby
will be .
Karadrina eggs ball-ball on top of that belly feathers lowering curtain puts . Eggs 0.5 mm ,
round edged will be .
Cotton leaf worm adult mature larvae 2.5 -3 cm
to The head of the worms brown
colored , div from light green dark to color . 13 mm brown dome colorful . The dome last at the
end separately in relief located ventricle towards turning around standing two thorn it will be ,
that's it relief on top of later again two thorn located child . Karadrina dome 5 cm of soil until in
the depth from the soil made in the nest (Figure 3 ).
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Karadrina wings when writing .
Eggs .
From an egg new came out
larva
Worm's partially grown up larva
fifth month mature
worms .
The dome .
Figure 3. Cotton leaf worm ( Caradrina ).
Cotton leaf worm often mushroom in case , some in cases egg and in the imago stage
winters . Butterflies early in the spring flying come out , plant to the leaves egg sheep begins .
From an egg came out larvae plant leaf gnawing is fed .
In Uzbekistan caradrine 5-6 times generation gives .
Cotton rodent pests against struggle methods :
In March-April:
1. Organize the application of Trichogramma at a rate of 0.5-1 grams per hectare against
the eggs of the pest on weeds on the edges of the fields;
2. To determine the number of fall armyworm and bollworm butterflies in wheat fields
planted between cotton rows, place one pheromone trap per 5-10 hectares of area and, based on
this, release Trichogramma against armyworm eggs in the above-mentioned quantities,
3. Root caterpillar to the eggs against Trichogramma 1 gram 3 times a day for 4-5 days
occasionally to put
In May :
1. May first ten from the day starting every 5-10 hectares cotton crops to the fields one by
one pheromone handles to put organization to grow and to the handles fallen of butterflies from
the number come out , 1-2 tunnels butterflies 3 times every 4-5 days when it comes to 1 gram per
hectare trichogram to put ;
2. The hump worm in tomato generation middle and big aged to worms against pest to the
number looking at to put poaching ( in ratios of 1:20 or 1:10 ) done increase
June in the month of :
1. Cossack worm in cotton to the generation against installed pheromone handles
renewal , 1 unit per 2 hectares pheromone handle to put organization to reach , to grasp one 2-3
butterflies per day when falling 1 gram per hectare 3 times every 4-5 days trichogram to put ;
2. In cotton chest worm middle and big aged to worms against per 100 bushels pest to the
number in ratios of 1:20, 1:10 and 1:5 depending on poacher 3 times with an interval of 4-5 days
to put
July in the month of :
1. Every 100 bushes 2-3 bundles of cotton worm eggs if , then the trichogram above
shown quantity and in terms of time to put organization to grow ;
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2. The hump worm middle and big aged to worms against pest from the density come out ,
in ratios of 1:20, 1:10, 1:5 per hectare poacher horsemen to put ;
3. The moon third ten on the day chest worm eggs no to do for cracked of cotton growth
points skirt collecting take , field to the edge remove buried to throw organization to grow ;
August in the month of :
1. Placed pheromone to the handles fallen chest worm butterflies to the amount looking at
trichogram and poaching evening from 5:00 p.m. to 9:00 p.m. distribution above shown ratio and
in terms of time to put continue to hold ;
2. Evening planted in cotton to pests against above shown entomophages to put continue
to hold ;
Conclusion
To the cotton damage delivery person rodent pests village farm to productivity serious
threat eater from factors is one . This in the article cotton in the fields occurring main rodent
pests , their biological characteristics , living period , spread conditions and deliverable economic
damage about information was given . Analyses this shows that this to pests against only
chemical from tools use enough not , maybe agrotechnician and biological methods application ,
monitoring system strengthen necessary . Modern , ecological safe struggle measures working
exit and to practice implementation to grow through cotton productivity stable storage and land
and water resources preservation possible . Therefore , in the future this to pests against
integrated protection systems develop current task become remains .
References;
1. Yusupov I.M. Entomologiya fanidan amaliy mashg’ulotlari. О‘zbekiston respublikasi
oliy ta’lim, fan va innovatsiyalar vazirligi. Qо‘qon davlat unversiteti. 60510100 – Biologiya.
O’quv qo’llanma. Toshkent-2025. 92-97 betlar.
2. https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.26757
3.
https://www.researchgate.net/publication/308253294_Turnip_moth_Agrotis_segetum_Denis_Sc
hiffermuller_1775_Lepidoptera_Noctuidea_Pesk_Risk_Review
4. https://www.mdpi.com/2075-4450/13/4/365
5. https://uzzamin.uz/uz/magazines/1-2023/goza-kochatlarini-noziklik-davrida-
zararkunandalardan-istiqbolli-himoyalash-uzzamin.pdf
