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Study of Potassium Release from K-Feldspar Minerals in Some Gypsiferous Soils | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 18, Issue 1, 2018, Pages 113-123 | ||
| Authors | ||
| Basim Shaker Obeid AlObeidy; Ibrahim B. Sabah | ||
| Abstract | ||
| This study was carried out two to know the effect of humic acide on k-feldspar minerals dissolution and release on potassium from some gypsiferous soils. Three sites of different gypsiferous soils were selected, depending on the physyografic location as flow Tikrit sites 5% Gypsum with depth (0- 10cm), aldoor sites 15% Gypsum with depth (cm 10-20) and Makhoul sites 25% Gypsum with depth (50-30cm ), Two experiments were in this study the first one studied the effect of adding humic acid with three concentrat (1%, 2%, 3%) to soils that diffrent content of gypsum (%5,%15,%25) on potassium release, the second experiment was studied the effect of adding humic acid of minerals k-feldspar dissolution and release of potassium , also calcolate the percentages of mineral structure of sand fraction for three soil samples, and i-dentify sand specially feldspar minerals before adding humic acid dypolar optcal light microscopy way coloring when the power of magnification 40x, The result show superuality aldoor soil sample (15% Gypsum) and sand sample with 3% of humic acid in the release potassium give 180.340 soil sample ppm in the sand sample amounted to 193.340 ppm .The results of the percentages of mineralgacal structure, samples of the three sand (5%, 15% and 25%) Gypsum sovereignty metal quartz and gave birth in a row (56%, 45.6%, 50.2%), followed by mineral (k -feldspar) as it overtook soil aldoor (15%) Gypsum and the ratio (36%) and followed by soil Makhoul (25%) Gypsum and gave proportion (31%), followed by soil Tikrit (5%) cast that gave the least amount (27.8%) metal k- feldspar, and the results showed the presence of metal Na- feldspar (Na-feldspar) at three levels of gypsum as soil gave Makhoul (25% gypsum) (13%) of the Na- feldspar and aldoor (15%) gypsum (12%) value convergent showed soil Tikrit (5%) Gypsum less valuable than the Na- feldspar and was (10.6%), after which the percentage of mineral components account diagnosed minerals feldspar group, which includes (K- feldspar, and Na- feldspar) and quartz way coloring by polarized light microscopy when power magnification 40X, as shown forms for samples of sand (Tikrit 5% Gypsum, aldoor 15%, and Makhoul 25%) the emergence of groups feldspar and quartz, as evidenced by the shapes emergence of K-feldspar in yellow and bright, and Na-feldspar shows White balloon Cretaceous, and quartz shows pale gray. | ||
| Keywords | ||
| Dissolution; FELDSPAR; Release potassium; Soil Gypsifuors | ||
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