The Vegetation Management of Fallow Rice Paddies Through Periodical Cultivation

Abstract

We conducted the vegetation survey on establishment of vegetation management for conserving small annual plants of fallow rice paddies, such as Monochoria vaginalis and Lindernia procumbens, in Nakaikemi, Tsuruga City, Fukui Prefecture, Japan. Plowing was restarted in 1997 and cultivation was resumed in 2000. We carried out the survey from 1997 until 2000. We found that stopping plowing would cause remarkable increase of particular perennial plants, such as Scirpus triqueter. Considering the fact that continuous plowing would increase the perennial plants, we introduced cultivation to prevent the increase. As a conclusion, we suggest that combination of continuous plowing and cultivation every after few years is a useful system for conservation of target vegetation.