During 1982/83, an experiment was conducted at the La Platina Experimental Station (INIA), Sanflago, Chile, to determine the effect of 4 different water application levels on the absortion of N, P, and K. A complete randomized block design was used, with 4 replicates; the irrigation treatments were defined as: 1.3 Eb; 1.0 Eb; 0.7 Eb; and 0.3 Eb, where Eb is class A pan evaporation. Nitrogen absortion decreased with the appl ication of excessive amounts of water. Extracted N, P, and K varied in a linear way, according to plant yield. The higher yields were obtained with 138-150 kg/ ha of N, 14-15 kg/ha of P, and 122-142 kg/ha of K.
|1 Estación Experimental La Platina (INIA), Casilla 439, Correo 3, Santiago. Chile. |
2 Facultad de Ciencias Agrarias y Forestales, Universidad de Chile, CasiIla 1004. Santiago. Chile.
3 Arcadia 1578. San Miguel. Santiago, Chile.