Soil Studies
Through efforts of its work teams, the Authority performed special studies related to soil aiming to optimize utilization of land suitable for agriculture, giving priority to the best soils in quality to utilize high productivity projects within the program of investment of Jabel Hasawna and Jefara Water System.
To achieve this target the Authority has performed the following works:
The Authority has done topographical survey at some locations elected for study in what is considered a preliminary phase providing starting base to study the target locations. Total area of land which has gone through topography process and plot planned is 149,577 Ha.
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|
Project Name
|
|
Project Name
|
|
1
|
Abu-Aisha
|
9
|
Shimekh Azoumi & Ras Tabal
|
|
2
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Abu-Shieba
|
10
|
Wadi Zamzam
|
|
3
|
Beer Al Ghanam
|
11
|
Al Shithaf
|
|
4
|
Wadi Al Athel
|
12
|
Ghadama
|
|
5
|
Wadi Zuwia
|
13
|
Jandouba
|
|
6
|
Wadi Ghadou
|
14
|
Al Krareem
|
|
7
|
South Tarhouna and Wishtata
|
15
|
Naema
|
|
8
|
Sof El Jeen & Grarat Al-Qataf
|
16
|
Wadi Tajmout
|
The Authority conducted detailed and semi-detailed Soil Studies at certain recommended locations in Jefara Plain region and along the Conveyance System, and at Jabel Gharbi.
Total land area covered by these studies reached 301,587 Ha., 131,567 Ha. of which studied in full detail at drawing scale 1:20,000 and 170,020 Ha. Studied in semi-details at drawing scale of 1:50,000 with a total of 14,674 soil profiles to complete these studies.
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The following table illustrates Regions and Areas studied in full details and semi-details:
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Location
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Area of Full Detail Study Ha.
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Location
|
Area of Semi Detail Study Ha
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|
1
|
Abu Aisha
|
10,000
|
1
|
Wadi Al Ithil
|
96,000
|
|
2
|
Abu Shieba
|
12,000
|
2
|
Suf El Jeen & Gararat Al Qataf
|
50,000
|
|
3
|
Bir Al Ghanam
|
13,000
|
3
|
Shimekh Azoumi & Ras Tabal
|
18,500
|
|
4
|
Wadi Al Ithil
|
60,000
|
4
|
Wadi Zamzam Region
|
5,520
|
|
5
|
Sof ElGean & Grarat Al Qatif
|
10,000
|
|
|
|
|
6
|
Wadi Ghadou
|
10,000
|
|
|
|
|
7
|
South Tarhouna
|
2,666
|
|
|
|
|
8
|
Wishtata
|
1,655
|
|
|
|
|
9
|
Zuwia Region
|
900
|
|
|
|
|
10
|
Shathaf Region
|
1,144
|
|
|
|
|
11
|
Al Azoumi Ras Al Tabal
|
5,197
|
|
|
|
|
12
|
Jandouba
|
832
|
|
|
|
|
13
|
Al Ghadama
|
500
|
|
|
|
|
14
|
Al Krarem
|
1,416
|
|
|
|
|
15
|
Naema
|
252
|
|
|
|
|
16
|
Wadi Tajmout
|
1,200
|
|
|
|
|
17
|
Wadi Maimoun
|
805
|
|
|
|
|
Total
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131,567
|
Total
|
170,020
|
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Grand Total 301,587 HA.
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Lab Works :
These studies are complementary to field studies of soil. The Authority through its Arab Libyan work teams of engineers made lab-tests to samples of soil from specified locations. Analysis covered 4 basic tests ( total Carbon Test, EC Salinity Level Test, PH Level Test and mechanical soil analysis ). This applies to all samples of soil. Tgere is also complete analysis for representative profiles to determine fertility status of soils. Total number of samples examined is 48,827 from various locations under study and anticipated for investment in Jabel Al Hasawna –Jefara Water System water.
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The following table illustrates Regions and Areas studied in full details and semi-details and number of Samples Analyzed:
This is for the final phases of study. After insertion of information and analysis results in computer to establish conclusion embodied in final reports for all locations studied and their illustrative maps as follows:
1. Soil Depth Map.
2. Soil Classification Map.
3. Land suitability for permanent irrigation farming.
4. Soil Salinity Map.
5. Land suitability for irrigation purposes.
6. Optimum Utilization Map.