Determination of the Effects of Hazelnut Husk and Tea Waste Treatments on Urease Enzyme Activity and Its Kinetics in Soil

Rıdvan KIZILKAYA; İmanverdi EKBERLİ

Makale detayları

Determination of the Effects of Hazelnut Husk and Tea Waste Treatments on Urease Enzyme Activity and Its Kinetics in Soil

Yazarlar:

Rıdvan KIZILKAYA | İmanverdi EKBERLİ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2008 Vol.32 Issue 4, pp.299-310

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000808626

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Anahtar kelimeler:

Özet:

 

In this research, the effects of 5% treatment of hazelnut husk (HH) and tea production waste (TEW) to clay loam soil on urease enzyme activity and its kinetics were determined in a 30-day soil incubation experiment. For this purpose, kinetic parameters (Vmax, Km, and Vmax/Km,) were calculated by determining urease activity in organic wastes treated soils in different substrate concentrations (0%, 1%, 2%, 4%, 6%, 8%, 10%, and 12%), incubation periods (0, 1, 2, 3, 4, 5 and 6 h), and incubation temperatures (0, 10, 20, 30, 40, and 50 °C) at the end of the 30 days of the incubation. The results of the study showed that: a) Treatments of soil with hazelnut husk and tea waste increased urease activity in soil, b) the reaction velocity increased as substrate concentration increased, however this increase continued up to 8% substrate concentration level in control soil and 10% substrate concentration level in organic waste amendment soil, c) While the reaction velocity of control soil became constant at 10% substrate concentration level, it became constant at 12% substrate concentration level in organic waste amendment soil. In both control and soil treated with organic wastes, the highest reaction velocity in substrate concentrations was determined at the incubation temperature of 50 °C. The highest Vmax in control and soil treated with organic wastes (TEW and HH) was observed at 50 °C. The highest Km was observed at 40 °C in control and at 50 °C in TEW and HH treatments. The highest Vmax/Km was observed at 50 °C in control, at 30 °C in HH treatment, and at 40 °C in TEW treatment soils.

 

In this research, the effects of 5% treatment of hazelnut husk (HH) and tea production waste (TEW) to clay loam soil on urease enzyme activity and its kinetics were determined in a 30-day soil incubation experiment. For this purpose, kinetic parameters (Vmax, Km, and Vmax/Km,) were calculated by determining urease activity in organic wastes treated soils in different substrate concentrations (0%, 1%, 2%, 4%, 6%, 8%, 10%, and 12%), incubation periods (0, 1, 2, 3, 4, 5 and 6 h), and incubation temperatures (0, 10, 20, 30, 40, and 50 °C) at the end of the 30 days of the incubation. The results of the study showed that: a) Treatments of soil with hazelnut husk and tea waste increased urease activity in soil, b) the reaction velocity increased as substrate concentration increased, however this increase continued up to 8% substrate concentration level in control soil and 10% substrate concentration level in organic waste amendment soil, c) While the reaction velocity of control soil became constant at 10% substrate concentration level, it became constant at 12% substrate concentration level in organic waste amendment soil. In both control and soil treated with organic wastes, the highest reaction velocity in substrate concentrations was determined at the incubation temperature of 50 °C. The highest Vmax in control and soil treated with organic wastes (TEW and HH) was observed at 50 °C. The highest Km was observed at 40 °C in control and at 50 °C in TEW and HH treatments. The highest Vmax/Km was observed at 50 °C in control, at 30 °C in HH treatment, and at 40 °C in TEW treatment soils.

Makale detayları

Determination of the Effects of Hazelnut Husk and Tea Waste Treatments on Urease Enzyme Activity and Its Kinetics in Soil

Yazarlar:

Rıdvan KIZILKAYA | İmanverdi EKBERLİ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2008 Vol.32 Issue 4, pp.299-310

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000808626

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Organic waste

hazelnut husk

tea waste

urease

soil

kinetic parameters

Sayı

Makale detayları

Determination of the Effects of Hazelnut Husk and Tea Waste Treatments on Urease Enzyme Activity and Its Kinetics in Soil

Yazarlar: Rıdvan KIZILKAYA | İmanverdi EKBERLİ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Agriculture and Forestry 2008 Vol.32 Issue 4, pp.299-310

Belge Tipi: Makale

Yayın Tarihi: 3/2008

Belge Dili: Türkçe

Document ID (Org No.): 2000808626

Sıklık: İki Aylık

eISSN: 1303-6173

pISSN: 1300-011X

Organic waste

hazelnut husk

tea waste

urease

soil

kinetic parameters

Sayı

Yazarlar:

Rıdvan KIZILKAYA | İmanverdi EKBERLİ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2008 Vol.32 Issue 4, pp.299-310

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000808626

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X