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Comparsion of potassium release by chemical and biological extractions and its relationship to soil properties in some of salty soils to Wasit city | ||
| Journal Of Wassit For Science & Medicine | ||
| Article 1, Volume 8, Issue 1, 2015, Pages 31-42 | ||
| Author | ||
| Mahdi Wasmy Seheeb | ||
| Abstract | ||
| Abstract This study was conducted to determine the properties of the chemical and, Physical soil by release kinetics of potassium, three different locations were chose in govern no rate according to the contrast in its salty and clay contents .These location are al-swaira . Nuamaniya and Al-Hay. Potassium was extracted from the studies by different methods such as the chemical methods and the biological methods. 1-The chemical methods: - Many laboratories experiments were used included four chemical extractions. These chemical extractions are water, the organic acid solution [(COOH)2 , C6H8O7] and ca-resin . Potassium is extracted by mentioned solutions above ( 0.5 molar conc) Potassium is extracted by (Missible displacement .Every technique is about ten periods . The duration of every one is twenty minutes .The total period is about (200) minutes except the resin which is used by Batch equilibrium technique .this technique is about ten periods. The duration of every one is about 7 days .The total period is about (70) days. 2-Biological methods: - in this experiment, Alfalfa plant (local classes) was in planted in plastic pots. The volume of every pot is about 3.5 kg, then cut five of tens on different time period when reach the flowers percentage (10%) for total growth period (200) days. Potassium is determined in all the extractions and for all the used methods in this study by flame photometer system. The results of this study display that the best extract to release potassium in calcic Iraqi soils is Ca-resin by Batch equilibrium technique in field capacity. | ||
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