Page 87 - Special Issue Modern Trends in Scientific Research and Development, Case of Asia

International Journal of Trend in Scientific Research and Development (IJTSRD)
Special Issue on Modern Trends in Scientific Research and Development, Case of Asia
Available Online: www.ijtsrd.com e-ISSN: 2456 – 6470

Cotton Sucking Pests and Measures to Combat with Them

Aziza Djumaeva Numondjon Kizi, Akmal Musaev Anvar Ugli, Ulugbek Bakhodirov Zokirjon Ugli
Assistant of Andijan Agricultural and Agro Technology Institute, Uzbekistan

ABSTRACT Research materials and methods. Our experience was
This article describes the morphology, biology and pest carried out in the following scheme on the 7-hectare field
control methods of cotton sucking pests. area of "Turtkul Abdurashid" farm cluster "Sokhib omad

baraka" in Izbaskan district of Andijan region.
KEYWORDS: Tetranychus urticae Koch, UzFEN-20% e.mc.,
Dalamectin 1.8% e.mc., control 1. Variant. Control: No control was used against cotton

spiders mite.
INTRODUCTION
There are many agricultural crops pests, and some pests
2. Variant. Template: UzFEN-20% e.mc.against cotton
species affect plants only at certain development stages.
spider mites.

One of the factors that reduces the agricultural crops yield is 3. Variant. Experiment: Dalamectin against cotton
pests. Therefore, the plants protection from disease and
spider mites 1.8% e.mc 0.4 l/ha
pests is one of the most pressing issues.

Experiment 3 variant consists of 4 turns, the seeds are sown
The unique natural climatic conditions of Uzbekistan, as well in the scheme 90x10x1 cotton Andijan-35 variety. The
as the favorable air temperature during the plants growing
experimental plots are 50 meters long and 7.2 meters wide.
season allow many pests development. That is why
The total plots area was 360 m . The total experiment area
2
thousands of insects, canals, diseases develop in agricultural was 1440 m . 100 plants were selected for calculation from
2
crops, which negatively affects the crops quantity and
each variant, and phenological observations were made from
quality.
this plant every 10 days.

Spider mite (Tetranychus urticae Koch) is a fierce and The developmental dynamics and harmful properties of the
persistent cotton pest. Spiders mite are found in 248 plants
spider mite were observed every 10 days in selected plants.
species, including 173 weeds species, 38 trees species and

shrubs, and 37 cultivated crops species. The mite mainly Research results. In our experimental field, UzFen 20%
settles on the back of its leaves, damaging it. The leaf is
e.mc.0.75 l/ha in the standard variant of antifungal
wrapped with very thin gray spider webs. His name is also
chemicals and in our experimental variant, Dalamectin was
named after him. The spider mite enters the cell cavity of the
1.8% e.mc.using 0.4 l/ha, during our experiments, the cotton
oral apparatus, absorbs the nutrients in it, and feeds on it. On the farm yield was as follows.
the affected leaves upper side there are light-colored spots,

and in severely damaged areas there are brown and reddish
In the control variant 26.7 s/ha, in the standard variant 28.6
spots. Strongly damaged leaves fall off, the plant is stripped s/ha, in the control variant 1.9 s/ha, in the experimental
and becomes very clumsy.
variant 32.1 s/ha, in the control variant 5.4 s/ha were

obtained.
Spider mite is a class of spiders, belonging to the canals

family, with small arthropods, some species. The body is UzFen, which is included in the plant list protection products
oval, 0.3-0.6 mm in height. Its spring-summer offspring are
approved for use in the Republic of Uzbekistan against
bluish-yellow, and those that overwinter are orange-red. The
spider mites, contains 20% e.mc. 0.75 l/ha and Dalapectin
two dark spots on his body sides are clearly visible. The
1.8% e.mc.using chemicals at 0.4 l/ha, we achieved a higher
female undergoes egg, larva, pronymph, deuteonymph and and additional yield than the control.
imago stages in its development. The eggs are round and

spherical. The larval, pronymphage, and deuteonympha
UzFEN 20% e.mc.against spiders acaricidal use was 71.3%,
forms differ in size from the imago. The larva has three pairs Dalamectin 1.8% e.mc.when applied insectoacaricide, gave
of legs, the nymph and four pairs of legs in the imago.
88.3% biological effect.

The spider mite develops in 8-12 days in summer (June, July,
In the standard version you can get a net profit of 0.73
August), 15-20 days in May, and 25-30 days in March-April. kopeck for 1 sum, in the experimental option you can get a
It produces 12 to 20 generations per year, depending on
net profit of 1.30 kopeck for 1 sum.
geographical location, weather conditions and the cotton

type, from which 8-12 generations are produced in June-
In summary, the Dalamectin application against spider mites
August. at 0.8 liters per hectare of 1.8% e.mc.is biologically effective.

ID: IJTSRD37938 | Special Issue on Modern Trends in Scientific Research and Development, Case of Asia Page 82