Pruebas de abonamiento con N, P y K para elevar la producción de café en la Meseta Central de Costa Rica

Abstract

In seven localities on the central plateau of Costa Rica, uniform trials of three levels of N, P and K were made on coffee plantations. Results were variable. The increase of yields was more pronounced with N and K in Curridabat; with N only in Palmares, and in Turrialba with K only. No effects were observed in San Ramón and San Antonio de Belén. Negative effects were found in Tres Ríos with N and P. Foliar analysis were made in one year in order to correlate these data with those from the harvest.