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American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 05    Pages: 25-29 

SJIF IMPACT FACTOR (2022: 5. 705) (2023: 7. 471) (2024: 8.02) 
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

 

 

 

 

 

 

 

 

ABSTRACT 

In this article, information is given on the effect development of the root system of cotton when irrigated in the order 

of 70-70-60% in furrow irrigation, 70-70-60%, 65-70-65% and 70-75-65% in drip irrigation (DI) of new and regional varieties 

of cotton S-6524, S-6570 and S-8298 in the conditions of irrigated typical sierozem soils of Tashkent province. 

KEYWORDS 

Typical sierozem soils, drip irrigation, root system of cotton, taproot, arable layer. 

INTRODUCTION

It is of urgent importance to carry out scientific 

research in the field of creating agrotechnology for 

growing cotton varieties with a root system adapted to 

drip irrigation, effectively using the best achievements 

of local and world science and practice. 

Influence of irrigation methods on the development of 

the root system of cotton In the field studies 

conducted by M.Mukhammadjanov and S. Suleymanov 

(1973), it was noted that the main taproot of cotton 

usually grows up to 1 meter, and the side roots grow up 

to 30-40 cm. In the conditions of automorphic soils 

with a deep water level, the root system of cotton is 

mainly formed under the influence of the irrigation 

system. Usually, in the agrotechnics of cotton 

cultivation, cutting of side roots by the working bodies 

of the cultivator was observed during inter-row 

processing. As a result, it has led to a decrease in the 

yield. If the yield of cotton grown without damage to 

the root system is taken as 100 percent, when 5 cm of 

the cotton root system is cut, 7.3 percent is lost, when 

10 cm is cut, 19.5 percent is lost, and when 20 cm is cut, 

20.6 percent of the yield is lost (3). 

In the research conducted by J.Noraliev, A.Avliyokulov 

in the conditions of takir soils of Surkhandarya region, 

  Research Article 

 

ROOT SYSTEM DEVELOPMENT OF NEW AND PROSPECTIVE VARIETIES 

OF COTTON IN DRIP IRRIGATION IN TYPICAL SIEROZEM SOIL 

CONDITIONS 
 

Submission Date: May 20, 2024, Accepted Date:  May 25, 2024,  

Published Date: May 30, 2024 

Crossref doi: https://doi.org/10.37547/ajahi/Volume04Issue05-05 

 

 

Shodiyor Bobokandov 
Phd Student Of Research Institute Of Cotton Selection, Seed Breeding Cultivation Agrotechnologies, 

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. 

 

https://theusajournals.com
https://doi.org/10.37547/ajahi/Volume04Issue05-05


Volume 04 Issue 05-2024 26 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 05    Pages: 25-29 

SJIF IMPACT FACTOR (2022: 5. 705) (2023: 7. 471) (2024: 8.02) 
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

the root system of the thin fiber Termiz-31 cotton 

variety grew by 0.8-1.2 m, Namangan-77 cotton variety 

by 0.7-1.0 m, Yulduz cotton variety reaches 0.6-0.7 m. 

Early cotton varieties have a weaker root system than 

late cotton varieties and are less resistant to drought. 

Therefore, quick-growing cotton varieties require 

frequent watering. In the 15-day period of cotton, the 

main root is 3-4 times longer than the main stem. The 

main root grows an average of 2.5-3.2 cm per day in the 

first two weeks, and the lateral roots grow 1.5-4.9 cm 

per day. Cotton root grows rapidly for the first 35-40 

days, and after 42-70 days, the root development 

continues to decrease (4). 

The growth and development of cotton varieties, yield 

and seed quality indicators are mainly directly related 

to the root system of cotton. Different irrigation 

technologies and regimes determine not only the 

surface weight, but also the development of the root 

system. The length of the roots of cotton varieties 

grown in meadow and meadow-swamp soils is two or 

three times shorter than the roots of cotton varieties 

grown in sierozem soils (2). 

According to the results of research carried out by 

N.Durdiev in the Samarkand region, when the root 

system of cotton variety S-8286 was studied by the 

method of drip irrigation in the arable layers of the soil, 

in the 10% budding phase, it was observed that the root 

length was 24 cm when watering the 30-50-50 cm soil 

layer, 30 cm in the 50-70-50 cm soil layer, and 36 cm in 

the 70-100-70 cm soil layer, the roots are strongly 

developed (1). 

MATERIALS AND METHODS 

Field experiments on this subject were carried out in 

2021-2023 in the conditions of irrigated typical sierozem 

soils of the Tashkent province, the mechanical 

composition of the soil is heavy sand, and the ground 

water is located at a depth of less than 15 meters. Local, 

new and promising S-6524, S-6570 and S -8298 cultivars 

were tested on the effect of soil moisture on the root 

system development in the order of 70-70-60%, 65-70-

65% and 70-75-65% relative to LFMC. In the variants 

using drip irrigation technology, the arable layer was 

set at 50-50-50 cm in accordance with the phases of 

growth and development of cotton, and in the options 

of direct irrigation, the arable layer was set at 70-100-

70 cm. “Methodology of field experiments with cotton 

under irrigation conditions”, “Methods of conducting 

field experiments” (UzCRI, Tashkent. 2007) were 

carried out based on the methodological manuals, and 

agrotechnical activities were carried out in the order 

adopted by the farm. 

RESULTS AND DISCUSSION 

As a result of observations on the development of the 

root system of cotton in 2021, it was observed that the 

root system penetrated mainly to a depth of 0-74 cm in 

the irrigated options, while in drip irrigation, the main 

root system of cotton was spread in the 0-49 cm layer 

of the soil. This led to the development of the root 

system in the fertile layer of the soil in drip-irrigated 

options, and in turn, increased yield. 

As a result, soil moisture before irrigation was 

controlled in the order of 70-70-60% in relation to 

LFMC, in the controlled irrigated variants, the arable 

layer of the soil was 70-100-70 cm, and the main 

developed layer of the cotton root system was 0-73 cm 

in variant 1 in S-6524 variety, in variant 2 S-6570 variety 

was 0-70 cm and in variant 3 S-8298, it was observed 

that the main developed root system was distributed 

in the 0-74 cm soil layer (Fig. 1). 

In the method of drip irrigation, the arable layer of the 

soil was 50-50-50 cm, and the soil moisture before 

irrigation was 70-70-60% in relation to LFMC. It was 



Volume 04 Issue 05-2024 27 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 05    Pages: 25-29 

SJIF IMPACT FACTOR (2022: 5. 705) (2023: 7. 471) (2024: 8.02) 
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

observed that the root system of S-6524 cotton variety 

developed 2-5 cm deeper than the root system of other 

varieties. 

Drip irrigation was applied and the soil moisture before 

irrigation was 65-70-65% in the order of LFMC, and the 

root system of cotton was 0-44 cm, 0-42 cm and 0-46 

cm of soil in cotton varieties S-6524, S-6570 and S-8298 

respectively. It was found that it developed in layers. 

The soil moisture before irrigation was 70-75-65 

percent compared to LFMC, in the options where DI 

was used, the root system of cotton was at 0-45 cm in 

the 10th option S-6524 variety, 0-47 cm in the 11th 

option S-6570 variety and 12th option in the variety S-

8298, the main developed root system was 0-49 cm. It 

was observed that the axial root system and lateral 

roots of the cotton variety S-8298 were strongly 

developed (Table 1). 

In the second year of the research, the soil moisture 

was 70-70-60 percent compared to LFMC, the control, 

in the fully irrigated options, the main root system of 

cotton developed layer was 0-70 cm in S-6524 variety, 

0-75 cm in S-6570 variety and 0-77 cm in S-8298. cm was 

observed to be distributed in the soil layer. 

When the soil moisture before irrigation is 70-70-60% 

compared to LFMC, the development of the taproot in 

the cotton variety S-6524 is faster than in the cotton 

varieties S-6570 and S-8298, and the lateral roots are 

also well developed, according to the soil 50-50-50 cm, 

it was observed that the length of the arrowroot was 

49 cm, and it was 2-4 cm longer than the above 

varieties. 

 
Furrow irrigation method, 2021 year 

 
Furrow irrigation method (70-70-60%), 

2022 year 

 
Drip irrigation method (70-70-60), 2021 year 

 
Drip irrigation method (70-70-60%) 

2022 year 



Volume 04 Issue 05-2024 28 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 05    Pages: 25-29 

SJIF IMPACT FACTOR (2022: 5. 705) (2023: 7. 471) (2024: 8.02) 
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

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Drip irrigation method (65-70-75), 2021 year 

 
Drip irrigation method (65-70-65%), 2022 year 

 
Drip irrigation method (70-75-65), 2021 year 

 
Drip irrigation method (70-75-65%) 

2022 year 
Fig 1. Development of the root system of cotton varieties under different irrigation methods (2021-2022) 

In drip-irrigated variants with soil moisture in the order 

of 65-70-65% relative to LFMC, the root system of 

cotton in S-6524 variety had a main developed layer at 

0-45 cm, in S-6570 variety at 0-39 cm, and in S-8298 the 

main root was at 0-47 cm was developed in the soil 

layer, in the same irrigation method, soil moisture was 

70-75-65% relative to LFMC, the root system of cotton 

was 0-43 cm, in S-6524 variety, 0-48 cm in S-6570 

variety, and it was observed that the main developed 

root system in S-8298 variety developed in the 0-50 cm 

soil layer. In this case, it was observed that the root 

system of S-8298 cotton variety was better developed 

(2-7 cm deeper) than other varieties, and the yield was 

also high (Fig 1). 

CONCLUSION 

It was found that it has optimal water and physical 

properties for obtaining a guaranteed abundant and 

high-quality harvest of cotton varieties by applying the 

drip irrigation method in the heavy sand and typical 

sierozem soils of Tashkent province, which have been 

irrigated since ancient times. As a result of 

observations on the development of the root system 

of cotton in furrow and drip irrigation, it was observed 

that the root system developed mainly in the 0-77 cm 

soil layer in the drip irrigation options, and in the 10-49 

cm soil layer in the drip irrigation technology. In this 

case, the soil moisture in drip irrigation was 70-70-60% 

compared to LFMC in the order of S-6524 cotton 

variety and 70-75-65% compared to LFMC, the root 

system of S-6570 and S-8298 cotton varieties was well 

developed compared to other varieties and the yield 



Volume 04 Issue 05-2024 29 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 05    Pages: 25-29 

SJIF IMPACT FACTOR (2022: 5. 705) (2023: 7. 471) (2024: 8.02) 
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

was also observed to be high. As a result of the 

introduction of drip irrigation technology, the main 

root system of cotton will develop in the fertile layer of 

the soil and the cotton yield will be relatively high. 

REFERENCES 

1. Durdiev N. Scientific justification of irrigation 

and feeding regimes of cotton varieties 

cultivated for seed breeding. Dissertation 

prepared for the degree of Doctor of 

Agricultural Sciences (Doctor of Science). 

Tashkent, 2022. -P. 153-154. (In Uzbek 

languages) 

2. Litovchenko. The effect of different water-

nutrition norms on the development of the 

root system of cotton // Monograph. Tashkent, 

1969. -P.18-19. (In Uzbek languages) 

3. Mukhammedzhanov M., Sulaymanov S. Root 

system and cotton yield. Tashkent, Uzbekistan. 

1973, P. 330. (In Russian languages) 

4. Noraliev J., Avliyokulov A. Yield of main and 

repeated planted cotton cultivars // 

Monograph. Tashkent, 1999. -P.127-128. (In 

Uzbek languages). 

 

 

 

 

 


