ISHS Acta Horticulturae 751: IV International Symposium on Rose Research and Cultivation
NUTRIENT CONTENT IN SOIL GROWN ROSES AFFECTED BY DRIP IRRIGATED POTASSIUM DOSES |
| Authors: | J.M. dos Santos, J.G. Barbosa, H.E. Prieto Martinez, J.A. Saraiva Grossi, P.R. Cecon, H.P. Rodrigues, F.L. Finger |
| Keywords: | Rosa, variety, soil potassium |
| Abstract:
In order to evaluate the behavior of nutrients in the soil as affected by drip irrigation, an experiment was established in a split plot random block design with four replicates, wherein the main plots were composed of the potassium doses (0, 30, 60 and 90 g/m2/year of K) and the sub-plots the cultivars Red Success and Sônia. The soil pH and macronutrients were evaluated periodically during the experiment. In the absence of fertilizer, there was a reduction of K levels, reaching 20 mg/cm3 at 635 days, considered low for this nutrient. For all rates of fertilization, the concentration of K reached an optimal range for the crop (60-120 mg/dm3). In the soil, for the variety Sônia, higher contents of K, Ca and Mg were present compared to Red Success, suggesting lower efficiency of uptake of nutrients for the latter cultivar. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
