簡易草地更新機を用いて放牧地へ追播した数種寒地型イネ科牧草の定着と永続性の比較

概要

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We overseeded six temperate perennial grasses in a degrading pasture with a simple grassland renovator. The overseeded grasses were Dactylis glomerata L., Phleum pratense L. Lolium perenne L. and three cultivars of ×Festulolium Braunii (cultivars: 'Barfest', 'Tohoku 1' and 'Morikei 1'). We compared the characteristics of establishment and persistency among these grasses. Establishment of L. perenne and the three F. Braunii cultivars was significantly better than that of D. glomerata and P. pratense, because L. perenne and three F. Braunii cultivars had outstanding early growth, so the height of L. perenne and three F. Braunii cultivars before grazing were higher than the other overseeded grasses and the dominant species in the degrading pasture. On the other hand, D. glomerata had the best persistency among these grasses three years after simple grassland renovation. However, one of the F. Braunii cultivars, 'Morikei 1', also had excellent persistency which was equal to D. glomerata. F. Braunii cultivars 'Morikei 1' are advantageous for simple grassland renovation in degrading pasture, because 'Morikei 1' had both outstanding esatablishment and excellent persistency.
2011-04-15