Fosforun Belirlenmesinde Çoklu Ekstraksiyon Yöntemlerinin Buğday Bitkisinde Kullanılabilirliğinin Toprak ve Bitki Analizleri ile Değerlendirilmesi

Öz

Fosfor ekstraksiyonu ve analizi besin elementleri içerisinde en önemlisi sayılabilir. Bu yüzden asit topraklarda ayrı, alkalin topraklarda ayrı ekstraksiyon yöntemleri kullanılarak analizi rutin hale gelmiştir. Çoklu ekstraksiyon yöntemleri üzerine araştırma çalışmalarının yoğunlaştığı ve kullanıma geçildiği günümüzde de bu konu önem arzetmektedir.

Bu çalışmada, Trakya yöresinde hem asit (3 adet) ve hem de alkalin (10 adet) reaksiyonlu toprakların bulunduğu 13 noktada yürütülen denemelerden alınan toprak ve bitki örnekleri analiz edilerek değerlendirilmiştir. Rutin fosfor analizinde asit topraklarda Bray ve Kurtz, alkalin reaksiyonlu topraklarda ise Olsen yöntemleri, çoklu ekstraksiyon yöntemlerinde ise bütün topraklarda, Mehlich-3, Amonyum bikarbonat – DTPA (AB-DTPA), asit amonyum asetat–EDTA (AAAc-EDTA) ve Yanai yöntemleri kullanılmıştır. Rutin analiz yöntemlerinde elde edilen fosfor analizi sonuçları ile çoklu ekstraksiyon yöntemleri arasında korelasyon katsayısı hesaplanmıştır. Aynı şekilde bitkideki fosfor miktarı ile rutin ve çoklu ekstraksiyon yöntemleri arasındaki ilişki de belirlenmiştir.

Anahtar Kelimeler

• toprak fosfor analizi,çoklu ekstraksiyon,buğday

Assessment of the Availability of the Multinutrient Extraction Methods for Wheat Plant for the Determining Phosphorus by Soil and Plant Analysis

Öz

Phosphorus analysis and extraction of phosphorus can be considered the most important in the plant nutrients. Therefore different phosphorus extraction methods has become routine for acidic and alkaline soils. Due to the studies focus on multinutrient extraction methods and transition to the use of these methods, this issue have importance at the present time. This study is conducted at 13 locations in Thrace where the soil is both acidic (3) and alkaline(10). Soil and plant samples taken from the trials are analyzed and assessed. Bray and Kurtz method was used in acidic soils and Olsen method was used in alkaline soils for the routine phosphorus analysis. Mehlich-3, ammonium bicarbonate - DTPA (ABDTPA), acid ammonium acetate-EDTA (AAAC-EDTA) and Yanai methods was used as multinutrient extraction methods for all of the soil samples. Analysis results was obtained and correlation coefficient was calculated between routine methods and multinutrient extraction methods. Likewise, the relationship between routine and multinutrient extraction methods was determined by the amount of phosphorus in plant.

Anahtar Kelimeler

• soil phosphorus analysis,multinutrient extaction,wheat

Kaynakça

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3. Elrashidi, M. A., Mays, M. D., Lee, C. W, Assessment of Mehlich-3 and ammonium bicarbonate-DTPA extraction for simultaneous measurement of fifteen elements in soil. Communication in Soil Science and Plant Analysis, Vol:34 İssue:19-20, pages: 2817-2838, (2003).
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