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Elyonurus argenteus nees ‐ A review

, &
Pages 123-131 | Published online: 08 Nov 2010
 

Abstract

Elyonurus argenteus probably causes more selective grazing problems in South Africa than any other single species. Chromosome counts indicate a number of races within local material of this world‐wide genus. E. argenteus occurs in 34 of the 70 main veld types of South Africa and is associated with sandy soils. As a species high in the succession, it is sensitive to high nitrogen. Its reaction to defoliation and its competitive ability depend largely on soil type, Information on the getmination and nutritive value of E. argenteus indicates that its population dynamics and contribution cannot be extrapolated from one region to another.

Uittreksel

Elyonurus argenteus veroorsaak waarskynlik meer selektiewe beweidingsprobleme as enige ander enkele gras‐soort in Suid‐Afrika. Kromosoomtellings wys dat daar ‘n aantal rasse binne die ploaslike materiaal van hierdie wéreldwye genus voorkom. Dit kom voor in 34 van die 70 hoofveldtipes van Suid‐Afrika en is geassosker met sanderige gronde. As ‘n soort wat hoog in die suksessie voorkom, is dit sensitief vir gronde met ‘n hoë stikstof inhoud. Die reaksie van E. argenteus op ontblaring en sy kompetisie‐vermoë is grootliks van grondtipe afhanklik. Inligting oor die ontkieming en voedingswaarde van dié gmssort, dui aan dat sy populasie‐dinamika en bydrae tot dierevoeding eie is aan elke streek waar dit voorkom.

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