Research Article

Previous Crop and Cultivar Effects on Methane Emissions from Drill-Seeded, Delayed-Flood Rice Grown on a Clay Soil

Table 4

Summary of the effect of previous crop, cultivar, and their interaction on seasonal methane (CH4) emissions from a clay soil during the 2013 growing season at the Northeast Research and Extension Center in Keiser, Arkansas.

Emissions propertyPrevious cropCultivarPrevious crop × cultivar
p

Area-scaled emissions (kg CH4-C ha−1 season−1)0.0030.0340.122
Yield-scaled emissions (kg CH4-C (Mg grain)−1)0.0040.0170.111
Postflood emissions (kg CH4-C ha−1)0.1390.9680.781
Postflood emissions (% total emissions)0.3670.8770.841