Volume 02 Issue 05-2022
1
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
05
Pages:
01-05
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
A
BSTRACT
The timing and depth of sowing should be determined by the soil conditions of each region and even each
field. The most important is the timely cultivation of the rows.
K
EYWORDS
Norm, term, soil, cultivator, a number of plants.
I
NTRODUCTION
The climate here is continental, with rainy days
lasting until March and even the first ten days of
April. Therefore, the best time for sowing is
during the second decade of April and the fifth
day of May. Seeds should be sown correctly and in
a timely manner with sufficient moisture to
produce a high-quality cotton crop. When
exposed to inadequate soil, most of the soil
decomposes and the rest grows poorly and
sparingly [1-4]. When determining the sowing
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Research Article
EFFECT OF DEFOLIANTS FOR MEDIUM FIBER COTTON
Submission Date:
April 27, 2022,
Accepted Date:
May 07, 2022,
Published Date:
May 18, 2022
Crossref doi:
https://doi.org/10.37547/ijasr-02-05-01
Ubaydullaev M.M.
Doctor of Philosophy in Agricultural Sciences, Head of the department, Fergana Polytechnic Institute,
Fergana, Uzbekistan
Komilov J.N.
Researcher, Fergana Polytechnic Institute, Fergana, Uzbekistan
Volume 02 Issue 05-2022
2
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
05
Pages:
01-05
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
time, it is important to take into account that the
cotton is a warm plant, with a temperature of 20-
250 for normal growth and development.
M
ATERIALS AND METHODS
Based on the results of many years of research
and development experience of the research
institutions, the sowing of seeds should be
completed within the following timeframe:
1.
April 5-15 in Tashkent and Ferghana regions.
April 1-15 in Syrdarya, Jizzakh, Namangan,
Andijan and Bukhara regions.
2.
In mountainous areas of the Andijan region
and in the Samarkand region April 5-20.
3.
March 25 in the southern districts of the
Surkhandarya region Until April 10, April 1-15
in the Northern District.
4.
In the southern regions of Kashkadarya from
25 March to 15 April, in the northern areas
from 1 to 15 April.
5.
It is recommended to plant in the Khorezm
region and southern districts of the
Karakalpak Autonomous Republic from April
10 to 25 and in the northern districts of the
autonomous republic until April 15-30 [5-9].
Seedless seeds are sown after 5-6 days in
comparison with hairy seeds. Depending on the
weather, these terms can be delayed for 2-3 days
or backwards is possible. The timing and depth of
the sowing should be determined according to the
soil conditions of each farm and even each field.
In our experience in grassy-soil soils of the
Fergana region, the seeds of cotton seeds S8290
and S6775, according to the soil condition, were
planted to a depth of 3-4 cm with a daily average
soil temperature of 10 cm. When sowing seeds, it
is necessary to take into account that the amount
of residual fibre on the seeds should not exceed
0.8% in the medium-fibre types and 0.4% in the
thin fibre varieties [10-17]. The seeds may not fall
evenly from the sowing apparatus and the
sprouts may be sparse. Providing fertilizers in
most cotton fields is one of the most important
tasks. According to the results of many years of
research, from 7 to 10% of the annual fertilizer
rate from cotton to weeding, nitrogen requires
about 5-7% of phosphorus. When cotton is
sprouted, the soil will not be able to absorb the
nitrogen and phosphorus it contains [18-22].
That is why nitrogen, phosphorus and potassium
fertilizers, given at the same time as sowing, have
significant benefits for the rapid development of
cotton [23-27]. These fertilizers have a positive
effect on the plant's faster absorption of mobile
nitrogen, phosphorus and potassium in the soil.
Based on the above scientific results, in our
experience, we have 30–40 kg of urea per hectare
and 40-50 kg of amorphous tractor cultivator per
sow, with 6–8 rows per sowing row. cm 10 cm
deep and 10-12 cm deep. In addition, the timely
cultivation of cotton fields is one of the most
important factors for achieving high yields. By
increasing the inter-row cultivation of cotton, the
activity of microorganisms in the soil will be
improved, and the plant's micro-and macro-
organisms will increase.
Volume 02 Issue 05-2022
3
International Journal of Advance Scientific Research
(ISSN
–
2750-1396)
VOLUME
02
I
SSUE
05
Pages:
01-05
SJIF
I
MPACT
FACTOR
(2021:
5.478
)
(2022:
5.636
)
METADATA
IF
–
7.356
C
ONCLUSION
As a result, the vitality of plant roots is improved
through oxygen enrichment by air exchange in
the soil. Rapid processing of young cotton
plantations facilitates the development of young
seedlings by providing porous soil and hot air.
When working the rows, the sow is planted to a
width of 60 cm, taking into account the age of the
sprout in the middle. If planted, appropriate soil
mitigation and grazing facilities will be
established. During the second and subsequent
processing, the working bodies may be installed
3-4, 5-6 cm deep, in both widths. It should be
remembered that the number of cultivations is 6-
7 times on light and sandy soils and 7-8 times on
medium and heavy soils. 25-30 cm depth should
be softened once. If this method is not applied (ie
not deeply cultivated) before sowing, the soil will
be interrupted by the reduction of moisture
content in the soil before further cultivation. After
7-10 cm of soil, an artificial wall will be formed.
This should not be allowed. From the
experiments, it can be concluded that the
fertilizer should be in proportion to the seeding
rate and pay attention to the number of residual
fibres on the hairy seeds. Early cultivation allows
the field to be well cleaned due to the loss of
weeds during their early age.
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