Publication Date

1985

Location

Kyoto Japan

Description

A trial was designed to study the effect of superphosphate fertilizatio,n:()f native pasture on the botanical composition and its evolution in a semiarid Mediterranean climate of Southwest Spain. Vegetation was studied during three years (1982, 1983 and 1984) at the end of the growing period of each year, being pasture grazed by beef cows in a stocking rate of 0.23 cow/ha. No effect of phosphorus fertilization on botanical composition was found the second year of study coincident with a year of low precipitation. When precipitation was higher than average in the third year; the increment of legumes in fertilized pasture was higher than in natural pasture (36.7 vs 7:7%; P < 0.05), with l). contribution of 94% ofTrifolium to the amount of legumes in fertilized pasture. Pasture availability at the end of the growing period was. higher (P < 0.05) in the fertilized pasture than in natural pasture in second and third year. These results show that phosphorus fertilization increases the germination rate of legume seeds, the dry matter yield, and the quality of pasture in paddocks grazed by beef cows.

Share

COinS
 

Influence of Superphosphate Fertilization of Natural Pasture on Botanical Composition in Southwest Spain

Kyoto Japan

A trial was designed to study the effect of superphosphate fertilizatio,n:()f native pasture on the botanical composition and its evolution in a semiarid Mediterranean climate of Southwest Spain. Vegetation was studied during three years (1982, 1983 and 1984) at the end of the growing period of each year, being pasture grazed by beef cows in a stocking rate of 0.23 cow/ha. No effect of phosphorus fertilization on botanical composition was found the second year of study coincident with a year of low precipitation. When precipitation was higher than average in the third year; the increment of legumes in fertilized pasture was higher than in natural pasture (36.7 vs 7:7%; P < 0.05), with l). contribution of 94% ofTrifolium to the amount of legumes in fertilized pasture. Pasture availability at the end of the growing period was. higher (P < 0.05) in the fertilized pasture than in natural pasture in second and third year. These results show that phosphorus fertilization increases the germination rate of legume seeds, the dry matter yield, and the quality of pasture in paddocks grazed by beef cows.