Mappaona Mappaona
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Pengaruh Naungan Pemberian Nitrogen terhadap Komposisi Kimia Rumput Brachiaria Decumbens, Stapf (Effect of Shading and Nitrogen Fertilizer on Chemical Compotition of Brachiaria Decumbens Stapf) Mappaona Mappaona; Soedarmadi Hardjosoewignjo; Justika Baharsjah; Ignatius Kismono
Buletin Ilmu Makanan Ternak Vol. 7 No. 3 (1987): Buletin Ilmu Makanan Ternak
Publisher : Buletin Ilmu Makanan Ternak

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Abstract

In tropics climate, growth is so fast that many grasses don't maintain mineral status satisfactory for ruminants nutrition. Several publications showed that plant grown under reduced light intensity contain higher mineral than the open condition. Improving forage quality through nitrogen fertilizer has been well documented since many years ago. To get information the influence of shade and nitrogen fertilizer on the chemical composition of Brachiaria, decumbens, stapf, a split-plot experiment with shade intensity (0, 30 and 60%) as main plot and nitrogen fertilizer (0, 75 and 150 kg/ha) as sub plot was conducted on latosol soil at IPB experimental farm, Tajur-Bogor from April to August 1986.The results showed that nitrogen fertilizer affected N, P and K content significantly. There was interaction between shade and nitrogen in relation to plant N and P content. This meant that the response of the grass to the nitrogen fertilizer differed at various level of shade intensity. Application of the nitrogen fertilizer at 60% shade intensity did not affect the increase of Plant N content. Nitrogen fertilizer increased plant P content significantly at 60% shade intensity, but did not at 0 and 30%. The increased of shade intensity, raised the plant mineral content.
Penambatan Nitrogen oleh Legume dan beberapa Implikasinya Mappaona Mappaona
Buletin Ilmu Makanan Ternak Vol. 8 No. 1 (1988): Buletin Ilmu Makanan Ternak
Publisher : Buletin Ilmu Makanan Ternak

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Abstract

Nitrogen Fixation by legume. In developing tropic countries, application of nitrogen fertilizer into pasture to improve the quality of herbage is not yet practiced widely due to the high of fertilizer cost and the low of animal farmers income. The use of legume in the form of mixed cropping in a pasture to improve the quality of pasture has been practiced in Australia and New Zealand since 50 years ago, and it still interested one to be studied and developed at present and the future. One of determinant factors as a key of the succesfull of mixed cropping in a pasture is the capability is not only depend on the kind of plant, but also influenced by many factors such as mineral nutrition, soil acidity, disease and insect, the potential of symbiosis and the adaptability of both the rhizobium and legume to soil and climate.