Articles
EFFICIENCY OF FOLIAR NUTRITION OF FIELD VEGETABLES GROWN AT DIFFERENT NITROGEN RATES
Article number
563_10
Pages
87 – 91
Language
English
Abstract
A multi-component fertilizer Ekolist U containing 11 essential nutrients, which is also recognized as being effective against some fungal diseases, was used in a field study to examine foliar nutrition of cabbage, onion and cucumber.
Available P and K in the soil was similar for all crops and experimental treatments, while preplant nitrogen was equal to half or full recommended application rate (100 and 200 kg N/ha for cabbage, 75 and 150 kg N/ha for onion and cucumber). Foliar applied fertilizer in concentrations of 1.5% and 3.0% was sprayed four times during the intensive period of plant growth at two week intervals, using 1000 l water solution per ha each time.
Results showed the benefits of foliar applied plant nutrients in treatments with half rates of preplant N fertilization, however, only a small additional effect was observed if the full recommended preplant rate of N was applied.
The maximum increase in marketable yield using supplementary foliar fertilization was 20.3% in cabbage, 10.8% in onion and 7.3% in cucumber.
Foliar fertilization significantly decreased the level of cucumber leaf infestation by downy mildew (Pseudoperonospora cubensis).
Available P and K in the soil was similar for all crops and experimental treatments, while preplant nitrogen was equal to half or full recommended application rate (100 and 200 kg N/ha for cabbage, 75 and 150 kg N/ha for onion and cucumber). Foliar applied fertilizer in concentrations of 1.5% and 3.0% was sprayed four times during the intensive period of plant growth at two week intervals, using 1000 l water solution per ha each time.
Results showed the benefits of foliar applied plant nutrients in treatments with half rates of preplant N fertilization, however, only a small additional effect was observed if the full recommended preplant rate of N was applied.
The maximum increase in marketable yield using supplementary foliar fertilization was 20.3% in cabbage, 10.8% in onion and 7.3% in cucumber.
Foliar fertilization significantly decreased the level of cucumber leaf infestation by downy mildew (Pseudoperonospora cubensis).
Authors
E. Kolota, M. Osinska
Keywords
cabbage (Brassica oleracea L. var. capitata L. ), onion (Allium cepa L.), cucumber (Cucumis sativus L.), multicomponent fertilizer, foliar nutrition, yields, downy mildew (Pseudoperonospora cubensis)
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