Effect of Phosphorus Fertilization on the Chemical Composition of Lotus tenuis and Trifolium repens

  • David Silveira Facultad de Agronomía, Universidad de la República, Departamento de Producción Animal y Pasturas. Estación Experimental Profesor Bernardo Rosengurtt, Ruta 26, km 408, 37000 Cerro Largo, Uruguay
  • Jorge Hernández Facultad de Agronomía, Universidad de la República, Departamento de Producción Animal y Pasturas. Estación Experimental Mario A. Cassinoni, Ruta 3, km 363, 60000 Paysandú, Uruguay
  • Mónica Cadenazzi Facultad de Agronomía, Universidad de la República, Departamento de Suelos y Aguas. Avenida Eugenio Garzón 780, 12900. Montevideo, Uruguay
  • Amabelia del Pino Facultad de Agronomía, Universidad de la República, Departamento de Producción Animal y Pasturas. Estación Experimental Mario A. Cassinoni, Ruta 3, km 363, 60000 Paysandú, Uruguay
  • Ramiro Zanoniani Facultad de Agronomía, Universidad de la República, Departamento de Biometría Estadística y Cómputo. Estación Experimental Mario A. Cassinoni, Ruta 3, km 363, 60000 Paysandú, Uruguay
  • Pablo Boggiano Facultad de Agronomía, Universidad de la República, Departamento de Biometría Estadística y Cómputo. Estación Experimental Mario A. Cassinoni, Ruta 3, km 363, 60000 Paysandú, Uruguay
Keywords: phosphate fertilization, nitrogen-phosphorus ratio, plant analysis, Lotus tenuis, Trifolium repens

Abstract

One way of increasing forage yield and quality of natural pastures is through the inclusion of legumes in the grass cover. In order to achieve an appropriate crop establishment it is necessary to have an adequate availability of phosphorus (P) in the soil. Given the poor levels of this nutrient in many soils, it is necessary to fertilize. The objective of this study was to evaluate the effect of P fertilization at various doses on the content of P and nitrogen (N) in Lotus tenuis Waldst. & Kit ex. Willd. (lotus from the lowlands) and Trifolium repens L. (white clover) in a smectitic, fine, thermic Oxiaquic vertic argiudoll at Cerro Largo, Uruguay. The treatments were four phosphorus levels (0, 21,8, 43,6 and 65,4 kg P ha-1) broadcasted at seeding as triple superphosphate (0-46-0). The experimental design was randomized blocks, with eight repetitions. At 120 days post seeding, 10 plants/plot/specie were collected to determine the aerial part and root dry weight, and P and N content. P concentration in dry matter increased with P doses for both species, while N concentration showed significant differences only in T. repens.

Published
2015-12-15
How to Cite
1.
Silveira D, Hernández J, Cadenazzi M, del Pino A, Zanoniani R, Boggiano P. Effect of Phosphorus Fertilization on the Chemical Composition of Lotus tenuis and Trifolium repens. Agrociencia Uruguay [Internet]. 15Dec.2015 [cited 21Oct.2020];19(2):49-58. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/301
Section
Soil and Water