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Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia
المؤلفون المشاركون
Melese, Asmare
Gebrekidan, Heluf
Yli-Halla, Markku
Yitaferu, Birru
المصدر
Applied and Environmental Soil Science
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-03-16
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
Soil acidity and low availability of P limit crop production in the highlands of Ethiopia.
The objective of this study was to determine the P status, distribution and forms of inorganic P and relate them to selected chemical properties of eight representative acidic surface soil samples from Farta District.
Soil pH (H2O) varied between 4.74 and 5.50.
The moderate to high CEC suggests that besides kaolinite, the soils also contain expandable 2 : 1 clay minerals.
Though the total P content was high, the available Olsen P content was very low or low in all soils except one.
In most soils, the abundance of inorganic P fractions was as follows: P bound by oxalate extractable iron ( Fe ox -P) > reductant soluble Fe-P > occluded Al-Fe-P > P bound by oxalate extractable aluminum ( Al ox -P) > calcium bound P (Ca-P).
Olsen P had a very strong positive correlation ( P ≤ 0.01 ) with Al ox -P ( r = 0.98 ), Fe ox -P ( r = 0.96 ), and oxalate extractable P ( r = 0.94 ).
Though Fe bound P reserves were quite abundant and the degree of P saturation of Al ox + Fe ox (median 3.3%) was moderate, the extremely low P saturation of Al ox (median 0.5%) explains the P deficiency of the soils.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Melese, Asmare& Gebrekidan, Heluf& Yli-Halla, Markku& Yitaferu, Birru. 2015. Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia. Applied and Environmental Soil Science،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1052412
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Melese, Asmare…[et al.]. Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia. Applied and Environmental Soil Science No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1052412
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Melese, Asmare& Gebrekidan, Heluf& Yli-Halla, Markku& Yitaferu, Birru. Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia. Applied and Environmental Soil Science. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1052412
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1052412
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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