N. Koga

Fuel consumption-derived CO2 emissions under conventional and reduced tillage cropping systems in northern Japan

N. Koga, Haruo Tsuruta, Hiroyuki Tsuji et al. · Agriculture Ecosystems & Environment · 2003 · 89 citations

Carbon Sequestration, Engineering, Reduced Tillage +8

An energy balance under a conventional crop rotation system in northern Japan: Perspectives on fuel ethanol production from sugar beet

N. Koga · Agriculture Ecosystems & Environment · 2008 · 88 citations

Crop Production, Sugar Beet, Engineering +7

Effects of reduced tillage, crop residue management and manure application practices on crop yields and soil carbon sequestration on an Andisol in northern Japan

N. Koga, Hiroyuki Tsuji · Soil Science & Plant Nutrition · 2009 · 87 citations

Engineering, Residue Return, Agricultural Economics +18

Accumulation of nitrous oxide and depletion of oxygen in seasonally frozen soils in northern Japan – Snow cover manipulation experiments

Yosuke Yanai, Tomoyoshi Hirota, Yukiyoshi Iwata et al. · Soil Biology and Biochemistry · 2010 · 78 citations

Freeze-thaw Cycling, Soil Gas, Biogeochemistry +9

Assessing energy efficiencies and greenhouse gas emissions under bioethanol-oriented paddy rice production in northern Japan

N. Koga, Ryosuke Tajima · Journal of Environmental Management · 2010 · 73 citations

Energy Consumption, Energy Efficiencies, Engineering +11