EIJMRMS ISSN: 2750-8587
VOLUME04 ISSUE08
42
TECHNICAL AND TECHNOLOGICAL ELEMENTS OF DRIP IRRIGATION OF FIBER COTTON
Butayarov Abduqodir Tuxtayevich
Termez Engineering and Technological Institute, Doctor of Philosophy, Associate Professor, Uzbekistan
AB O U T ART I CL E
Key words:
Drip irrigation technique, humidity,
climate, melorization, water consumption, limited
resource, fuel material, mineral fertilizer, labor
cost.
Received:
18.08.2024
Accepted
: 23.08.2024
Published
: 28.08.2024
Abstract:
Currently, the efficiency of using water
resources is observed to decrease sharply due to
sudden changes in weather, therefore, the use of
modern irrigation systems is considered to be the
demand of the time. As a result of significant
savings in water consumption, mineral fertilizer,
and fuel lubrication materials, only the root part of
the plant is moistened, and the amount of water
wasted by evaporation is significantly saved.
Damage caused by water flowing over the edge of
the field is not allowed. Significant savings in labor
costs are achieved.
INTRODUCTION
The lack of rational use of water resources in Uzbekistan is currently one of the main reasons hindering
the sustainable development of irrigated agriculture. One way to solve the problem may be to use a drip
irrigation system (DIS). Drip irrigation was first developed in Israel in the early 1960s and introduced
as an independent type of irrigation on an industrial scale. The positive results obtained in a short
period of time contributed to the rapid spread of drip irrigation in many countries around the world.
Drip irrigation is based on the fact that a small amount of water reaches the vascular part of plants.
Table 1
Irrigation technology is an element
VOLUME04 ISSUE08
https://doi.org/10.55640/eijmrms-04-08-06
Pages: 42-47
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ISSN: 2750-8587
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Parameters
Irrigation
method
Slope
Distance
between
drip hose
(own), m
Wetting of
the soil
layer, cm
Water
consumptio
n in drip
hose, l/h
Distance
between
drippers in a
drip hose, m
Drip hose (ega)
uniform
wetting
reliability
factor, %
1
Irrigation (I)
0,003
-
0,004
0,6 0,9
60-100-60
-
-
-
0,71
2
Drip
irrigation
(DI)
0,6
0,9
40-60-40
1,6
2,2
0,2
0,99
0,3
0,97
0,4
0,89
3
Drip
irrigation
(DI)
0,6
0,9
40-40-40
1,6
2,2
0,2
0,99
0,3
0,96
0,4
0,88
4
Drip
irrigation
(DI)
0,6
0,9
60-60-60
1,6
2,2
0,2
0,99
0,3
0,96
0,4
0,88
Table 1 lists the elements of the field drip irrigation equipment used in the field experiment.
Irrigation rates are determined by the following formula:
m_n=100∙γ∙h∙A∙(β_1
-
β_2 ) m3/ha (1)
Here h is the estimated depth of the soil layer, m;
γ is the bulk density of the soil, t/m3;
A is the moisture zone, m2;
β_1 is the small (moisture capacity) volume of moisture in absolutely dry soil mass, %.
β_2 is the actual moisture before irrigation, corresponding to the lower (lower) limit of optimal
soil moisture.
𝑚
1
= 100 ∙ 1,33 ∙ 0,5 ∙ 0,66(21.8
1
− 15,26
2
) = 287.0
м
3
/га
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𝑚
2
= 100 ∙ 1.33 ∙ 0,5 ∙ 0,66(21.8
1
− 15,26
2
) = 287.0
м
3
/га
𝑚
3
= 100 ∙ 1,32 ∙ 0,7 ∙ 0,66(21.8
1
− 16,35
2
) = 323.1
м
3
/га.
𝑚
4
= 100 ∙ 1,32 ∙ 0,7 ∙ 0,66(21.8
1
− 16,35
2
) = 323.1
м
3
/га
𝑚
5
= 100 ∙ 1,35 ∙ 0,7 ∙ 0,66(21.8
1
− 16,35
2
) = 330.5
м
3
/га
(2)
𝑚
6
= 100 ∙ 1,33 ∙ 0,7 ∙ 0,66(21.8
1
− 16,35
2
) = 325.6
м
3
/га
𝑚
7
= 100 ∙ 1,33 ∙ 0,5 ∙ 0,66(21.8
1
− 14,17
2
) = 333.5
м
3
/га
𝑚
8
= 100 ∙ 1,34 ∙ 0,5 ∙ 0,66(21.8
1
− 14,17
2
) = 313.9
м
3
/га
The area wetted by one drop is determined by the following formula
е:
(
)
(
)
66
,
0
6
,
0
2
,
0
3
,
0
1
1
=
=
=
b
a
A
n
А
In this: n- number of drippers per plant;
A- wetted area from one water outlet, m2;
ab- planting scheme of the plant (crop), m2; bottom
T_sh- drip hose piece;
K_s- number of seedlings piece;
Duration of water yield:
5
,
4
55666
6
,
1
96
,
0
350000
=
=
=
n
q
E
m
t
соат/га
(3)
𝐸 − 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡 𝑜𝑓 𝑤𝑎𝑡𝑒𝑟 𝑢𝑠𝑒 𝐸 = 0.96 … .0.98 𝑒𝑞𝑢𝑎𝑙𝑠;
𝑞 − 𝑤𝑎𝑡𝑒𝑟 𝑐𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛 𝑏𝑦 𝑑𝑟𝑖𝑝𝑝𝑒𝑟, 𝑙/𝑠𝑜𝑎𝑡;
𝑛 − 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑑𝑟𝑖𝑝𝑝𝑒𝑟𝑠 𝑝𝑒𝑟 1.
𝑇ℎ𝑒 𝑎𝑟𝑒𝑎 𝑖𝑟𝑟𝑖𝑔𝑎𝑡𝑒𝑑 𝑎𝑡 𝑜𝑛𝑒 𝑡𝑖𝑚𝑒 (ℎ𝑎) 𝑖𝑠 𝑑𝑒𝑡𝑒𝑟𝑚𝑖𝑛𝑒𝑑 𝑏𝑦 𝑡ℎ𝑒 𝑣𝑎𝑙𝑢𝑒𝑠 𝑜𝑓 𝑡ℎ𝑒 𝑚𝑖𝑛𝑖𝑚𝑢𝑚 𝑝𝑒𝑟𝑖𝑜𝑑 𝑜𝑓 𝑡ℎ𝑒 𝑖𝑟𝑟𝑖𝑔𝑎𝑡𝑖𝑜𝑛 𝑖𝑛𝑡𝑒𝑟𝑣𝑎𝑙. :
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𝐴 = 𝑆/(∆𝑡_𝑚𝑖𝑛 ) = 60/9 = 6.66 𝑒𝑞𝑢𝑎𝑙𝑠.
𝐼𝑛 𝑡ℎ𝑖𝑠. 𝑆 − 𝑎𝑟𝑒𝑎 𝑜𝑓 𝑡ℎ𝑒 𝑚𝑜𝑑𝑢𝑙𝑎𝑟 (𝑖𝑟𝑟𝑖𝑔𝑎𝑡𝑒𝑑) 𝑠𝑖𝑡𝑒, ℎ𝑎;
〖
∆𝑡
〗
_𝑚𝑖𝑛 − 𝑚𝑖𝑛𝑖𝑚𝑢𝑚 𝑖𝑟𝑟𝑖𝑔𝑎𝑡𝑖𝑜𝑛 𝑝𝑒𝑟𝑖𝑜𝑑, 𝑑𝑎𝑦𝑠.
𝐼𝑟𝑟𝑖𝑔𝑎𝑡𝑖𝑜𝑛 𝑡𝑖𝑚𝑒 𝑖𝑠 𝑑𝑒𝑡𝑒𝑟𝑚𝑖𝑛𝑒𝑑 𝑏𝑦 𝑡ℎ𝑒 𝑓𝑜𝑙𝑙𝑜𝑤𝑖𝑛𝑔 𝑓𝑜𝑟𝑚𝑢𝑙𝑎.
час
Q
m
t
эг
эл
g
55
,
4
6
,
66
300
1
=
=
=
час
Q
m
t
эг
эл
g
55
,
4
6
,
66
300
2
=
=
=
час
Q
m
t
эг
эл
g
3
,
5
6
,
66
350
3
=
=
=
час
Q
m
t
эг
эл
g
3
,
5
6
.
66
350
4
=
=
=
час
Q
m
t
эг
эл
g
30
,
5
6
,
66
350
5
=
=
=
час
Q
m
t
эг
эл
g
30
,
5
6
,
66
350
6
=
=
=
(4)
час
Q
m
t
эг
эл
g
31
,
5
6
,
66
350
7
=
=
=
час
Q
m
t
эг
эл
g
31
,
5
6
,
66
350
8
=
=
=
The value of the coefficient of uniform moistening of the calculated layer with drip irrigation was
determined using the following formula.
85
,
0
350
300
1
=
=
=
мах
р
н
m
m
K
85
.
0
350
300
2
=
=
=
мах
р
н
m
m
K
0
.
1
380
380
3
=
=
=
мах
р
н
m
m
K
0
.
1
380
380
4
=
=
=
мах
р
н
m
m
K
0
,
1
380
380
5
=
=
=
мах
р
н
m
m
K
0
,
1
380
380
6
=
=
=
мах
р
н
m
m
K
(5)
96
,
0
380
350
7
=
=
=
мах
р
н
m
m
K
96
,
0
380
350
8
=
=
=
мах
р
н
m
m
K
EUROPEAN INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH
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In the process of improving the technology of drip irrigation of cotton, the calculated layer had a
uniform moistening coefficient of Kn=0.96%, which proved that the water necessary for the growth and
development of cotton is provided in the standard mode without loss of expected water consumption.
CONCLUSION
The calculations are given for 10 hectares of each type of agricultural crop, since it is on this size of land
that minimal economies of scale can be achieved and investments begin to pay off. Depending on the
expansion of irrigated land, the effect on the timing of reimbursement of incurred costs is calculated.
The estimates are valid for 2021 and may change over time. Thus, the TST is pulled up to the plant and
then covered with soil. The part of the tube where the dripper (emitter) is fixed remains outside. The
cost of investment in the TST installation is calculated based on the corresponding prices of the
manufacturing enterprise of the ZAMIN ANGORSKIY CLUSTER cluster farm, which is a cooperative
enterprise with enterprises producing drip irrigation systems in the Surkhandarya region. The
installation of TST on 10 hectares of cotton area is the most expensive - 91.6 million soums, and
installation on the same cotton area will cost 88.4 million soums. The cheapest and most profitable is
TST for 10 hectares of garden - 50.4 million soums. The calculations of the benefits are as follows (per
1 hectare of land): - As a result of a significant reduction in the time of irrigation and pump operation,
electricity consumption for all crops will be significantly reduced. As a result, drip irrigation reduces
electricity costs by 499,000 soums per 1 hectare of cotton, by 317,000 soums per 1 hectare of wheat
and by 320,000 soums per 1 hectare of wheat per season. - The costs of diesel fuel and agronomic
measures will be reduced, especially for cotton, since cotton cultivation involves a large number of
agronomic measures compared to wheat cultivation and gardening. Drip irrigation allows saving 100
thousand soums of diesel fuel and 85 thousand soums of agronomic measures per hectare of cotton. As
a result of the effective application (through the system) and assimilation of mineral fertilizers with
drip irrigation, the cost of fertilizers is reduced: annually 114 thousand soums per 1 hectare of cotton,
and 37 thousand soums per 1 hectare of wheat. - Labor costs will be reduced by 300 thousand soums
for all crops under consideration. - The projected increase in yield will be quite variable and will amount
to an average of 40 percent for all crops. The annual profit was determined based on the average yield
of agricultural crops and the average prices set for them. - Water savings for all crops will amount to
11,769 m3 per year per 1 hectare of cotton, 6,700 m3 per 1 hectare of wheat, 11,650 m3 per 1 hectare
of orchard. The estimated savings due to tax breaks are 81,000 soums per harvest per year. - The
payback period is the ratio of investments to annual total profit. According to calculations, investments
made in drip irrigation of cotton will pay off in a little more than 3 years, for wheat - in 4 years.
EUROPEAN INTERNATIONAL JOURNAL OF MULTIDISCIPLINARY RESEARCH
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Investment in the garden is the most profitable, and the payback period is less than 2 years. Thus, TST
is not only a careful attitude to natural capital (water conservation, soil improvement, energy and fuel
savings, reduction of harmful emissions into the air, etc.), moreover, from an economic point of view, it
is not only a garden, but it is also useful for cotton and wheat in the medium term.
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