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72 ANNEXES Analysis of the agricultural situation in Azraq Basin German-Jordanian Programme “Management of Water Resources” 1.1.4 - Deep fine mixed thermic Family of Typic Haplogypsids*. Soil occurs on gently sloping fans below basaltic ridges and above the course of wadi Rajil in its lower reaches to the east of Azraq. These soils observed in Al-Dughyla which represent the Agriculture area in Azraq depression The soil is formed in alluvial/colluvial material of mixed basaltic limestone origin, moisture regime is aridic (
Analysis of the agricultural situation in Azraq Basin ANNEXES German-Jordanian Programme “Management of Water Resources” 73 2 - North Badia Region 2.1 - Deep fine mixed calcareous thermic Family of Xeric Haplocambids*. This type of soil occurs on gently sloping to undulating basalt flows mainly in the eastern part of Mafraq (North Badia) the soil is formed on alluvial/colluvial material overlying paralithic (weathered) Basalt. Soil Moisture regime is transitional xeric-aridic with a precipitation between 150-200 mm, average soil depth is 80 cm. these soils found in Al- Ashrafyeh and Naïfeh. Soil when dry the surface is moderately hard to hard, can be slightly capped leading to run-off and surface stone or gravels cover up to 50% of the surface. The top soils is brownish yellow to strong brown (10RY 4/4-7.5YR4/6) moderate medium sub angular blocky, texture is Silty Loam (28.3% Clay, 56.6% Silt, 15.1% Sand), and strong reaction with dilute hydrochloric Acid. The sub soil is brown to brownish yellow (7.5YR4/4-10YR6/6) moderate to strong medium sub angular blocky, Silty Clay Loam, (29.4% Clay,54.7% Silt,15.9% Sand). Few CaCO3, occur in subsoil and increase with depth but no Calcic horizon occurs within 100 cm, the soil overall slightly saline with Ece value of 3-5 mS/cm, ESP of up to about 6% in the subsoil whilst reaction is slightly to moderately alkaline at pH 7.9 with CEC of 24-25 me/100g, whilst inherent fertility is low with Organic Matter at (0.81- 1.43%), Total-N of 0.1% and available –P about 20ppm, Ca/Mg and Mg/K ratios at 2.5 and 4 and do not indicate any major deficiencies. CaCO3 levels at (15-20%) are moderately high and create some hazard. Moisture reserves would be adequate with available water holding capacity (AWC) in the range 110-130 mm/m. The deep soils are dominants, but moderately deep soils limited by fresh or weathered basalt or sometimes basalt gravel are common.
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