Seasonal Productivity of Tall Fescue, Dallisgrass and Bahiagrass Grown in Pure Pastures, and Rotational Grazing Combining These Pastures in Kyushu District

NADA Yoichi, SAWAMURA Hiroshi

doi:10.14941/grass.30.428

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Other Title

九州におけるトールフェスク,ダリスグラス,バヒアグラス各草地の季節生産性およびその組合せによる輪換放牧
九州におけるトールフェスタ,ダリスグラス,バヒアグラス各草地の季節生産性およびその組合せによる輪換放牧
キュウシュウニオケルトールフェスタ,ダリスグラス,バヒアグラスカクソ

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Abstract

Pure pastures of 52a of tall fecue, 20a of dallisgrass and 46a of bahiagrass were established in Kyushu Agricultural Experiment Station, Nishigoshi Kumamoto and seasonal procuctivity of each grasses were investigated measuring each months growth. As a result, tall fescue showed even productivity from March to October except severe decrease of growth in August, while dallisgrass and bahiagrass showed the growth pattern with one peak in June and in July respectively. And dallisgrass showed less growth except in June while bahiagrass showed comparably higher growth in June, August and September. Six Japanese brown cattle with average body weight of 650kg were grazed in rotation among these pastures resulting shortage of grasses in spring and autumn and excess in summer. Therefor it is suggested suitable acreage ratio of 7:3 of tall fescue to tropical grasses instead of 4.5:5.5 in this experiment. Longer interval of grazing resulted the decrease of productivity (total annual yields at the commencement of each grazing) of dallisgrass and bahiagrass, decrease of intake ratio of tall fescue and bahiagrass, and decrease of stubble numbers of tall fescue and dallisgrass. From this result, longer interval of grazing is considered to be not suitable for the management of these pastures. Comparison of palatability of each grass in terms of intake ratio was made, resulting higher intake ratio of dallisgrass followed by tall fescue and bahiagrass. All three grasses decreased their intake ratio during summer.

Journal

Japanese Journal of Grassland Science

Japanese Journal of Grassland Science 30 (4), 428-433, 1985

Japanese Society of Grassland Science

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