THE RELATIONSHIPS BETWEEN BIOCHEMICAL ACTIVITY CHARACTERICTIES AND SOIL PROPERTIES OF HAZELNUT GROWN SOILS

In this research, enzyme activities of soil cultivated for hazelnut in Terme and Ünye townships were determined and the relationships between the activities and some soil properties, trace elements and heavy metals were evaluated. Correlation and regression analysis showed that there was significant positive correlation between urease activity and organic carbon, nitrogen and extractable Cu; strong positive correlation between acid phosphates activity and organic matter, organic carbon and nitrogen; but negative correlation between the activities and extractable Mn content. Additionally, positive correlation was found between alkaline phosphatase activity and pH, available P, extractable Cu, Zn and Pb contents. With the exception of C/N ratio and extractable Cd content, no significant correlation was observed between ß- glikosidase activity and soil properties.

FINDIK TARIMI YAPILAN TOPRAKLARIN BÝYOKÝMYASAL AKTÝVÝTE ÖZELLÝKLERÝ ÝLE TOPRAK ÖZELLÝKLERÝ ARASINDAKÝ ÝLÝÞKÝLER

Bu araþtýrmada, Terme - Ünye yöresinde fýndýk tarýmý yapýlan topraklarda üreaz, ß- Glikosidaz, asit ve alkali fosfataz enzim aktiviteleri belirlenmiþ ve bu aktiviteler ile topraklarýn bazý önemli özellikleri ile, iz element ve aðýr metal içerikleri arasýndaki iliþkiler ortaya konulmaya çalýþýlmýþtýr. Yapýlan regrasyon-korelasyon analiz sonuçlarýna göre, üreaz enzim aktivitesi ile organik madde, azot ve ekstrakte edilebilir Cu , asit fosfataz aktivitesi ile organik madde, organik C ve azot arasýnda pozitif, ekstrakte edilebilir Mn arasýnda da negatif bir iliþki belirlenmiþtir. Ayrýca, alkali fosfataz enzim aktivitesi ile pH, alýnabilir P, ekstrakte edilebilir Cu, Zn ve Pb arasýnda önemli pozitif iliþki bulunmuþtur. Topraklarýn ß-Glikosidaz aktivitesi ile toprak özellikleri arasýnda C/N oraný ve ekstrakte edilebilir Cd miktarý hariç, hiçbir önemli iliþki bulunamamýþtýr.