Further experiments on the acid grassSetaria sphacelata

Dougall, H. W.; Birch, Heidi

doi:10.1007/bf01978677

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…As found by Birch & Dougall (1967), Jones & Ford (1972) and Smith (1971), Setaria accumulated moderate amounts of oxalate in the present trial, much more than Brachiaria. About half of it was soluble in water in both grasses, contrary to the findings of Jones & Ford (1972), where about 90 % was water-soluble.…”

Section: Mineral Compositionsupporting

confidence: 83%

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Climate, nitrogen and grass. 7. Comparison of production and chemical composition of Brachiaria ruziziensis and Setaria sphacelata grown at different temperatures.

Deinum¹,

Dirven²

1976

NJAS

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7. In order to test the validity of previous results, a trial was performed in greenhouses on the effect of temperature, age and N level on production, morphological and chemical composition of Brachiaria ruziziensis Germain & Evrard and Setaria sphacelata (Schum) Stapf & Hubbard. The 2 grasses were equally productive, but Setaria had a lower optimum temperature. Brachiaria was leafier than Setaria and had higher contents of nitrate and protein; it was also more digestible. It had higher contents of cations, inorganic anions and organic acids, but its oxalate content was lower both in leaves and in stems. Leaves of Brachiaria were much richer in nitrate than those of Setaria at the same protein content. At a greater age, both grasses had higher yields that originated from a greater number of heavier tillers. Plants were less leafy; nitrate and protein contents, and digestibility of organic matter were lower, but percentage of cell-wall constituents was higher. Increase of temperature stimulated plant development in both grasses, causing lower protein content and lower digestibility of organic matter in leaves and stems. Temperature also had a direct negative effect on stem digestibility apart from its effect on stem development. N application increased production, nitrate and protein content in both grasses, but had hardly any effect on plant development and digestibility. Consequently, Setaria reacted to environmental conditions like the other tropical grasses studied in this and previous trials, so confirming the conclusions. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Section: Mineral Compositionsupporting

confidence: 83%

“…Brachiaria was markedly richer in nitrate than Setaria, as found by Birch et al (1964), andDougall (1967). Setaria may have been so low, both because of a somewhat shorter supply of nitrogen and of its capability to reduce nitrate into ammonium, which may be accumulated (Birch et al, 1964;Birch & Dougall, 1967;Smith, 1972).…”

Section: Mineral Compositionmentioning

confidence: 93%

Climate, nitrogen and grass. 7. Comparison of production and chemical composition of Brachiaria ruziziensis and Setaria sphacelata grown at different temperatures.

Deinum¹,

Dirven²

1976

NJAS

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“…Setaria sphacelata is a pasture grass which was introduced for use in the wet tropical and subtropical areas of this country in 1961 (Anon 1967). Although strains of Setaria are known t o contain up to 7.8% oxalate (Dougall and Birch 1967;Jones et a1 1970) the grass has not been harmful for livestock except on one occasion when a mortality occurred in hungry cattle grazing an experimental pasture consisting solely of the high oxalate containing Bua River cultivar (Jones et al 1970;Seawright et a1 1970). Recently, a bone disease occurred in a group of young horses grazing Setaria and it is the purpose of this letter to draw attention to the possible association of nutritional bone disease in horses and the use of Selaria as a pasture grass, especially as it continues to be used for improvement of the native pastures to an ever-increasing degree.…”

Section: Osteodystrophia Fibrosa In Horses Grazing Setaiua Sphacelatamentioning

confidence: 99%

OSTEODYSTROPHIA FIBROSA IN HORSES GRAZING SETARIA SPHACELATA

Groenendyk

Seawright

1974

Aust Veterinary J

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“…The content of oxalate in other available strains of Setaria ranged from 3.9% in a Nandi strain to 7.8% in a Kazangula strain (Jones et ul 1970). Setaria sphucrlata is unusual in that it has an acid sap due to the presence of various organic acids, mainly oxalic acid, and this in turn leads to the accumulation in the grass of ammonium ions (Dougall and Birch 1967). Oxalate is thus believed to be held in the grass as ammonium oxalate (Dougall and Birch 1967).…”

Section: Introductionmentioning

confidence: 99%