Articles
NUTRIENT CONTENT IN SOIL GROWN ROSES AFFECTED BY DRIP IRRIGATED POTASSIUM DOSES
Article number
751_10
Pages
93 – 97
Language
English
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.
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.
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
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