<b>Effect of Establishment Methods on Growth of Brachiaria brizantha (A.Rich. ) Stapf as Annual Summer Grass in a T</b><b>emperate Zone </b>

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  • 播種法の違いが無出穂条件における夏季放牧草としての<i><b>Brachiaria brizantha cv. MG5</b></i>の生育に及ぼす影響
  • 播種法の違いが無出穂条件における夏季放牧草としてのBrachiaria brizantha cv. MG5の生育に及ぼす影響
  • ハシュホウ ノ チガイ ガ ムシュッスイ ジョウケン ニ オケル カキ ホウボクソウ ト シテ ノ Brachiaria brizantha cv. MG5 ノ セイイク ニ オヨボス エイキョウ

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Abstract

<tt>Elucidation of characteristic of palisadegrass (Brachiaria brizantha (A. Rich. ) Stapf) was conducted in this study. Dry matter production and utilization in grazed pasture where palisadegrass was sown in spring in an Italian ryegrass standing crops using a no-till planter. We prepared a non-plowed reseeding treatment and a plowed treatment (control) with spacing of 25 m x 25 m with three replications. The germination rate, above ground biomass and vegetation were compared. Germination rates of the non-plowed reseeding treatment tend to be lower than those of the plowed treatment. These findings suggested that the seeding process in the non-plowed reseeding treatment was inhibited by the Italian ryegrass standing crop. The non-plowed reseeding treatment was inferior to the plowed treatment during initial growth. The sluggish growth of the non-plowed reseeding treatment was expected to result from competition with Italian ryegrass and weeds. The non-plowed reseeding treatment had less aboveground biomass of palisadegrass than the plowed treatment at 56 days after seeding (grazing start day). From 41 days after grazing, the non-plowed reseeding treatment came to have more aboveground biomass of palisadegrass than the plowed treatment. The non-plowed reseeding treatment came to have less trodden-down parts of the plant than the plowed treatment had. Additionally, result show that dry matter production decreased with the decline of the air </tt><tt>temperature from mid-September. </tt>

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