The effect of wheat straw, corn straw and tobacco residues on denitrification losses in a field planted with wheat Buǧday anizi, misir sapi ve tütün atiǧinin buǧday vejetasyonu altinda toprakta denitrifikasyon kaybina etkisi
Turkish Journal of Agriculture and Forestry, vol.26, no.6, pp.349-353, 2002 (Scopus, TRDizin)
- Publication Type: Article / Article
- Volume: 26 Issue: 6
- Publication Date: 2002
- Doi Number: 10.3906/tar-0209-1
- Journal Name: Turkish Journal of Agriculture and Forestry
- Journal Indexes: Scopus, TR DİZİN (ULAKBİM)
- Page Numbers: pp.349-353
- Keywords: Corn straw, Denitrification, Tobacco waste, Wheat straw
- Isparta University of Applied Sciences Affiliated: No
Abstract
A field experiment was conducted to determine the effects of different organic residues (OR) (e.g.. wheat straw corn straw and tobacco residues) on nitrogen mineralization and denitrification loss (N2O-N) using application rates recommended to local farmers. Nitrate and ammonium analyses were carried out on periodically collected soil samples. In-situ denitrification loss was determined using the acetylene inhibition technique (AIT). The results revealed that OR application increased N mineralization significantly. In the favorable conditions for nitrification and intensive mineralization period. NO3-N accumulation at 0-60 cm depth peaked at 163.0, 177.7 and 226.6 kg N ha-1 in plots with wheat straw, corn straw and tobacco waste, respectively. In-situ denitrification measurements showed that intensive mineralization, depending on temperature and humidity conditions, significantly increased denitrification losses. The denitrification values measured showed a variation between 7.58 and 17.40 kg N2O-N ha-1. The results also showed that the effect of organic substrates on N loss via denitrification was highly dependent on the type of organic substrate used, and the C/N ratio of the organic substrate played an important role in N loss by denitrification.