Effect of microelements (B, Zn) on Cotton plant's productivity, its leaf area and plant height. Abstract

2.Object and Methods of Research 
Our research was conducted in the gray soils of Pastdargom district of Samarkand region in 2020-2021. In our research, we 
used the "Omad" sort of cotton. This variety is planted in large areas in Samarkand region. 

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All of the analyses, phenological observations, calculations were made based on methodologies [36]. - phenological 
observations, biometric measurements of the state inspection for variety testing of agricultural crops [39; p. 239] style and 
Beideman [34; p. 153], and the level of leaves was determined by N.N. Tretyakovʼs style, [37] and weighing method. 
3.Results Obtained and Their Analysis 
We determined the effect of micronutrients on the object of our research, i.e., the cotton, during its development phases. 
The obtained results are given in Table 1. 

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Table 1. The effect of microelements on the formation of the leaf surface of cotton. (cm
2
). 
Options 
leaf surface 
 sm2
leaf surface
 
 sm2
leaf surface
 
 sm2
leaf surface
 
 sm2
Cinnabar
Polishing
Flowering
Ripening
Control Option 
47,6 
430,6 
1004,3 
4534,9 
N
200
P
140
K
100
+B
0.02% 
55,4 
454,7 
1105,4 
4689,6 
N
200
P
140
K
100
+B
0.05% 
49,2 
441,4 
1086,2 
4595,1 
N
200
P
140
K