Grass Tetany of Ruminants

Gruñes, D. L.; Stout, P. R.; Brownell, JR

doi:10.1016/s0065-2113(08)60272-2

Cited by 167 publications

(98 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The influence of fertilization on organic acid concentrations in plants has been a subject of considerable interest in recent years (Grunes et al, 1970). In a field study of southern Indiana, Teel (1966) found that fertilization with NH4NO3 at the rate of 168 kg N/ha increased the concentration• of total organic acids in tall fescue (Festuca arundinacea).…”

mentioning

confidence: 99%

“…In a field study of southern Indiana, Teel (1966) found that fertilization with NH4NO3 at the rate of 168 kg N/ha increased the concentration• of total organic acids in tall fescue (Festuca arundinacea). Such elevated concentrations of organic acids are believed to cause toxic responses in animals (Burau and Stout, 1965;Grunes et al, 1970;Stout et al, 1967). For instance, grass tetany has occurred in animals grazing California spring grasses high in trans-aconitic acid (Burau and Stout, 1965;Stout et al, 1967).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Partition column chromatography for quantitating effects of fertilization on plant acids

Prior¹,

Gruñes²,

Patterson³

et al. 1973

J. Agric. Food Chem.

View full text Add to dashboard Cite

A method for determining organic acid levels in biological materials by silica gel partition column chromatography (pcc) is described. It uses tetrabromophenolphthalein ethyl ester, which has E. high molar absorbency, for quantitating the acids in the column effluent. The concentrations of several organic acids were determined in two species of crested wheatgrass, Nordan (Agropyron ciesertorum) and Fairway (A. cristatum), grown. under different conditions of K fertilization. For comparison, aconitic, citric, and malic acids were also determined by polarography, spectrophotometry, and fluorometry, respectively. Results obtained by these methods agreed with the data obtained by pcc. The concentration of trans-aconitic acid averaged about 96 and 21 mequiv/kg of dry matter in Nordan and Fairway, respectively, when grown in the greenhouse without K. K fertilization (312 kg/ha) approximately doubled the trans-aconitic acid concentration in both species. Fairway contained 363 mequiv/kg of malic acid, while Nordan contained 280 mequiv/kg. K fertilization increased these concentrations to 611 and 446 mequiv/kg, respectively. Citric acid was increased by K fertilization, but there was no significant difference between species and in no case was the citric acid concentration greater than 80 mequiv/kg of dry matter.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Partition column chromatography for quantitating effects of fertilization on plant acids

Prior¹,

Gruñes²,

Patterson³

et al. 1973

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…Potassium and N concentrations were especially high in samples from Waimate West. According to criteria proposed by Grunes et al (1970) many of the pastures in this survey would be considered "tetany-prone". For similar conditions of high-K or high-N herbage, Metson et ai.…”

Section: Plant Compositionmentioning

confidence: 99%

“…Receil 'eci 17 ALigust 1977;reJ'isiol1 24 April 1978 Relationships between the occurrence of grass tetany and the Mg status of soils have proved difficult to establish in both overseas (Grunes et al 1970) and New Zealand (Metson 1974) studies because of the large number of subsidiary factors known to be associated with the disorder in grazing animals (Wilson et al 1969). A possible link between grass tetany, soil series, and parent material in Taranaki was first indicated to the authors from results of major silicate analyses of a pumiceous lapilli deposit, the Inglewood Tephra (Neall 1977), in an area near I nglewood.…”

Section: Introductionmentioning

confidence: 99%

Survey of magnesium content of soils and pastures and incidence of grass tetany in three selected areas of Taranaki

Turner

Neall

Wilson

1978

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

“…Kemp and 't Hart ( 1957) reported that a ratio of K/(Ca+Mg) greater than 2.2 in forage would likely result in grass tetany in animals fed on it. The grass tetany problem has been reviewed by Grunes (1973) and Grunes et al (1970).…”

mentioning

confidence: 99%

The Productivity and Chemical Composition of Altai Wild Ryegrass as Influenced by Time of Irrigation and Time and Rate of N Fertilization

Lawrence¹,

Winkleman²,

Warder³

et al. 1980

Can. J. Plant Sci.

View full text Add to dashboard Cite

Trin. ) , were studied from 197 4 to 197'7 . No clear-cut methods to maximize the seed yield on irrigated land were found. Highest dry matter yields were obtained from grass given three irrigations and 400 kg N/ha per year. Spring applications of N fertilizer iesulted in forage with a higher N content than fall applications. The N content ofthe forage increased with increasing levels of N fertilizer, whereas the P content of the forale was reduced by N fertilizer applications. Toxic levels of nitrates can be expected from spring applications of 400 kg N/ha. This danger was reduced if N fertilizer was applied in the fall. The Ca, Mg and K content increased with increasing levels of N fertilizer. The (1973) was converted to a minimum 7o N (816.25 :1.287o N) for comparative purposes. The required minimum level of N was found in most samples from grass that had been given N fertilizer, but not in samples from Altai wild ryegrass that was not fertilized. P ContentThe P content of Altai wild ryegrass was not influenced greatly by time of irrigation (Table l). Likewise, the P content was not consistently influenced by time of N fertilizer application. However, unfertilized grass generally had a higher P content than that given N fertilizer.

show abstract

Grass Tetany of Ruminants

Cited by 167 publications

References 67 publications

Partition column chromatography for quantitating effects of fertilization on plant acids

Partition column chromatography for quantitating effects of fertilization on plant acids

Survey of magnesium content of soils and pastures and incidence of grass tetany in three selected areas of Taranaki

The Productivity and Chemical Composition of Altai Wild Ryegrass as Influenced by Time of Irrigation and Time and Rate of N Fertilization

Contact Info

Product

Resources

About