Table of Contents
Agriculture, Volume 7, Issue 5 (May 2017)
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Cover Story (view full-size image) In northern Japan, declines in soil nitrogen fertility have occurred in paddy–upland rotation [...] Read more. In northern Japan, declines in soil nitrogen fertility have occurred in paddy–upland rotation systems with soybean cultivation. To evaluate the nitrogen budget in the system, we investigated nitrogen flows by a 6-year lysimeter experiment. The nitrogen budget during soybean cultivation was negative. The nitrogen budget during rice cultivation and the effects of preceding compost application on the nitrogen budget and soil nitrogen fertility were also investigated and discussed in detail. View this paper