Publication Date

1989

Description

Natural grasslands in Uruguay produce low yields of poor quality herbage and therefore intensive farming is based upon sown pastures of temperate species. Although quite productive, these pastures show high instability and after reaching a peak in the second year, herbage yields rapidly go down due to a consistent legume decline. They usually end up in the fourth year in a low producing grassy sward dominated by perennial grasses like tall fescue or by bermudagrass which is endemic in the cropping/pasture area. Thee lack of persistence is also common to other countries of the region and although the effects of the different factors involved are not yet well understood, periodical renovation to restore and promote the legumes could be a way to overcome the problem. The objective of this work was to see if periodical renovation could maintain pasture yields and the relationship of these practices with P maintenance fertilization.

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The Impact of Renovation and Phosphate Fertilization on the Productivity of Pastures in Uruguay

Natural grasslands in Uruguay produce low yields of poor quality herbage and therefore intensive farming is based upon sown pastures of temperate species. Although quite productive, these pastures show high instability and after reaching a peak in the second year, herbage yields rapidly go down due to a consistent legume decline. They usually end up in the fourth year in a low producing grassy sward dominated by perennial grasses like tall fescue or by bermudagrass which is endemic in the cropping/pasture area. Thee lack of persistence is also common to other countries of the region and although the effects of the different factors involved are not yet well understood, periodical renovation to restore and promote the legumes could be a way to overcome the problem. The objective of this work was to see if periodical renovation could maintain pasture yields and the relationship of these practices with P maintenance fertilization.