Influx of CO2 from Soil Incubated Organic Residues at Constant Temperature

  • Shoukat Ali Abro Department of Soil Science, Sindh Agriculture University, Tandojam, Sindh, Pakistan and Plant Nutrition Laboratory, College of Resources & Environmental Sciences, North West A & F, University 3 Ticheng Road Yangling Shaanxi, PR, China.
  • Iqrar Hussain Shah Federal Seed Certification Department, Sindh, Pakistan
  • Ghulam Qadir Shar Department of Chemistry, Shah Abdul Latif University, Khairpur Mirs, Sindh, Pakistan
  • Aamir Ali Abro Department of Chemistry, Shah Abdul Latif University, Khairpur Mirs, Sindh, Pakistan
  • Abdul Qayoom Mahar Department of Plant Breeding & Genetics, Sindh Agriculture University, Tandojam, Sindh, Pakistan

Abstract

Temperature induced CO2 from genotypic residue substances is still less understood. Two types of organic residues (wheat- maize) were incubated at a constant temperature (25°C) to determine the rate and cumulative influx of CO2 in laboratory experiment for 40 days. Further, the effect of surface and incorporated crop residues with and without phosphorus addition was also studied. Results revealed that mixing of crop residues increased CO2-C evolution significantly & emission rare was 37% higher than that of control. At constant temperature, soil mixed residues, had higher emission rates CO2-C than the residues superimposed. There was linear correlation of CO2-C influxed for phosphorus levels and residue application ways with entire incubation at constant temperature. The mixing of organic residues to soil enhanced soil organic carbon levels and biomass of microbially bound N; however to little degree ammonium (NH4-N) and nitrate NO3-N nitrogen were decreased.

Published
Jun 1, 2016
How to Cite
ABRO, Shoukat Ali et al. Influx of CO2 from Soil Incubated Organic Residues at Constant Temperature. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 17, n. 1, p. 5, june 2016. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/48>. Date accessed: 12 dec. 2018.