ISHS Acta Horticulturae 474: III International Symposium on Olive Growing
EFFECT OF DIFFERENT N FORMS AND CONCENTRATIONS ON OLIVE SEEDLINGS GROWTH |
| Authors: | J.L. García, J. Liñán, R. Sarmiento, A. Troncoso |
| Keywords: | olive, seedlings, greenhouse, nitrogen, nutrition, growth |
| Abstract:
The effect of different N forms on the growth of olive seedlings in the greenhouse was studied. KNO3, NH4NO3 and (NH4)2SO4 at different concentrations, as well as two types of substrates, sterile sand and a sand-peat mixture (1:1), were tested. In sterile sand, with N concentrations higher than 5 mM, serious damage was observed in the plants, so concentrations of 3, 4 and 5 mM of N were used for each N salt. N-NH4 treatments resulted in a significantly higher growth compared to KNO3 treatment. Using the peat-sand substrate and the N concentrations described above, seedling growth was higher than in sterile sand, but no differences among treatments were observed. However, the peat:sand substrate allowed application of higher N concentrations and using NH4NO3 differences in growth were obtained, reaching the best results with 14–28 mM. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
