Labor-saving Stocking Management of Kentucky Bluegrass (<i>Poa pratensis</i> L.) Dominant Pasture. 4. Factor affecting the long-term changes in herbage production

DOI

Bibliographic Information

Other Title
  • ケンタッキーブルーグラス（<i>Poa pratensis</i> L.）を基幹とする放牧草地の省力的利用管理技術　4．連続放牧条件における草種構成および地上部生産量の長期的変動とその要因

Abstract

<p>To clarify the changes in botanical composition and herbage production, and factors affecting them under labor-saving management, Holstein raising cattle were put out to pasture on Kentucky bluegrass (Poa pratensis L., KB) and white clover (Trifolium repens L., WC). mixed sward in Hokkaido for 16 years. To reduce surplus herbage, stocking was initiated at 5 cm plant length, and the entire amounts were fertilized in late June after spring flash. The annual mean value of the dry matter weight ratio of Agrostis alba L. coincided with the change in soil potassium content. By keeping the fertilizer component content in the soil within the standard range, the annual means of dry matter weight ratios of KB and WC were maintained in the ranges of 39-65% and 9-39%, respectively. The annual mean of daily dry matter production fluctuated in the range of 2.1-5.3 g DM/m2 and increased with increasing total precipitation in May-October and the annual average dry matter ratio of WC. Based on our reports’ results, it was considered that KB-WC mixed sward in Hokkaido has a certain degree of herbage production under continuous stocking conditions under stable botanical composition for a long period.</p>

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Keywords

Details 詳細情報について

  • CRID
    1390016515857550848
  • DOI
    10.14941/grass.69.120
  • ISSN
    21886555
    04475933
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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