Effect of potassium on production and forage quality of Brachiaria decumbens Stapf in the Colombia piedmont east plain region

Acta Agronómica

Rincón Castillo, Álvaro¹ 

[1] Centro de Investigaciones La Libertad Corpoica, Villavicencio, Colombia

关键词: Acid soils;    Brachiaria decumbens;    grass fertilization;    grass minerals;   

DOI  :  

学科分类：农业科学（综合）

来源: Universidad Nacional de Colombia * Facultad de Ciencias Agropecuarias Palmira

【 摘 要 】

This experiment was conducted at the Research Center La Libertad CORPOICA, located in Villavicencio, Meta, Colombia, in an Oxisol of middle terrace with a content of 0.08 cmol.kg-1 potassium (K). The statical design consisted of a randomized complete block with an arrangement of split plot with four replications, four K levels (30, 60, 90 and 120 kg/ha) were used. As main plot was assessed basic fertilization (fertilized and unfertilized basic). The basic fertilization (in kg/ha) consisted of 100 of P2O5, 60 N, 30 S, 3 Zn, 0.1 Cu and 0.5 for B. There were no significant differences in forage production due to the levels of K applied, then it can be argued that B. decumbens respond well to 30 kg.ha-1 of K, however, basic fertilization applied together with K, contributed to improving the production of forage B. decumbens to 12 months after application. K content in soil, was higher than 0.10 cmol/kg of soil, a level considered appropriate for the development of grasses such as B. decumbens.

【 授权许可】

CC BY-NC-SA