Role of cover crops in soil respiration

Organic matter CO 2 Soil microbial PLFA Decomposition Cover crops Barley and Hairy vetch PO 4, SO 4, NO 3 Mineralizati on Soil organic matter pH Temperature Moisture content Aeration Amount and quality of SOM Soil respiratio n Drainage during flooding Flooding after drainage Temperature CO 2 emission Water content In our results we got higher soil respiration at the end of fallow season and it was reduced immediately after the flooding condition but at the same time we got higher microbial PLFA which was considered due to SOM addition through CC Photosynth esis Correlation Microbial activity SOM content Decomposition rate Soil quality C/N 85:1 C/N 11:1 Plant available forms Indicator Indic ator Indicat or Fallow season Rice cultivation low SOM Low MA ¶ Reduced soil respiration after flooding

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Transcript of Role of cover crops in soil respiration

Page 1: Role of cover crops in soil respiration

Organic matter

CO2

Soil microbial PLFA

Decomposition

Cover cropsBarley and Hairy vetch

PO4,SO4,NO3

Mineralization

Soil organic matter

pHTemperatureMoisture contentAeration Amount and quality of SOM

Soil respiration Drainage during floodingFlooding after drainage

Temperature

CO2 emission

Water content

In our results we got higher soil respiration at the end of fallow season and it was reduced immediately after the flooding condition but at the same time we got higher microbial PLFA which was considered due to SOM addition through CC

Photosynthesis

Correlation

Microbial activitySOM contentDecomposition rate

Soil quality

C/N 85:1

C/N 11:1

Plant available forms

Indicator

Indi

cato

Fallow season Rice cultivation

low SOMLow MA