The South African perennial legume Lebeckia ambigua sustainably supports livestock production on infertile soils in rain-fed agro-ecosystems
نویسندگان
چکیده
Lebeckia ambigua is a perennial legume endemic to rangeland South Africa that adapted dry (< 400-mm annual rainfall), infertile and acidic (below pH 5.5Ca) soils. Although it considered the was grazed by mammalian ungulates during its evolution, little known about production, nutritive value for grazing animals or optimal management in an agricultural context, either centre of origin Australia. Experiments were conducted test hypotheses sheep would graze L. autumn without adverse effects on animal plant. established at two sites Western In experiment 1, three intensities imposed exclusion cages introduced single intensive period, provide differing residual pasture heights. The metabolisable energy crude protein content more than 11.4 MJ/kg matter 21%, respectively all treatments. Un-grazed produced 1740 kg DM/ha while moderate severe reduced total biomass production 50% over 10 weeks post-grazing (P < 0.001). 2, continuous 64 days had no negative impacts biochemical health indicators merino wethers. Grazing effect plant density indicating substantial pressure autumn. could become valuable sustainably increasing livestock soils rain-fed agro-ecosystems where other legumes fail.
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ژورنال
عنوان ژورنال: Agronomy for Sustainable Development
سال: 2021
ISSN: ['1774-0746', '1773-0155']
DOI: https://doi.org/10.1007/s13593-021-00727-7