According to these conditions and relative scaling factors, the
application of the IPCC’s CH4 emission model results in adjusted
daily emission factors EFi of 1.522 kg-CH4.ha1.d1 in rain-fed
conditions and 3.397 kg-CH4.ha1.d1 under irrigation conditions
(for both dry and wet seasons). The observed average length of
cropping cycles is 120 days, from sowing to harvesting. It is very
homogenous, although dictated by rice ecophysiology and climatic
conditions, and also by the availability of harvesting equipment
(combine harvester), which is rented to local entrepreneurs
(combine harvesters).