Response of soil biological and biochemical activity to salination
Küçük Resim Yok
Tarih
2002
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu çalışmanın amacı, tuzluluğun toprak verimliliği ile ilişkili bazı biyolojik ve biyokimyasal özellikler üzerindeki etkisini araştırmaktadır. Toprak örnekleri beş farklı tuz düzeyini içeren (0.65, 2.0, 3.5, 5.0 and 6.5 dS m"') tuzlu sulama suları ile sulanan bir denemeden alınmıştır. Toprağın elektrik! geçirgenliğindeki artış toprağın biyolojik ve biyokimyasal verimliliği üzerinde olumsuz bir etkiye sahip olurken, N-mineralizasyonunun tuzluluğa hassasiyeti C-mineralizasyomına oranla daha fazla olmuştur. En yüksek elektrik! geçirgenlikte (6.5 dS m"1), N- mineralizasyonu % 47 oranında engellenirken aynı tuz uygulaması C-mineralizasyonunu sadece % 17.5 oranında engellemiştir. Proteaz ve üreaz gibi hidrolaz grubu enzim aktiviteleri bir oksidoredüktaz enzim olan katalaza oranla tuzluluktan daha fazla etkilenmişlerdir.
The objective of the present study was to investigate the effect of salination on the biological and biochemical soil characteristics related with the fertility. Soil samples were taken from an experiment that was established with five different levels of irrigation with saline water (0.65, 2.0, 3.5, 5.0 and 6.5 d S m"1). Increase in soil electrical conductivity (EC) had negative effects on soil's biological and biochemical fertility, N- mineralization being more sensitive than C-mineralization. At the highest EC (6.5 dS m"1), N-mineralization was inhibited 47 % while the same treatment lead to an inhibition of 17.5 % in C-mineralization. The activity of hydrolases such as protease and urease was more negatively affected by salinity than that of catalase (an oxidoreductase enzyme).
The objective of the present study was to investigate the effect of salination on the biological and biochemical soil characteristics related with the fertility. Soil samples were taken from an experiment that was established with five different levels of irrigation with saline water (0.65, 2.0, 3.5, 5.0 and 6.5 d S m"1). Increase in soil electrical conductivity (EC) had negative effects on soil's biological and biochemical fertility, N- mineralization being more sensitive than C-mineralization. At the highest EC (6.5 dS m"1), N-mineralization was inhibited 47 % while the same treatment lead to an inhibition of 17.5 % in C-mineralization. The activity of hydrolases such as protease and urease was more negatively affected by salinity than that of catalase (an oxidoreductase enzyme).
Açıklama
Anahtar Kelimeler
Mühendislik, Ziraat
Kaynak
Ege Üniversitesi Ziraat Fakültesi Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
39
Sayı
1
