Articles
IMPROVED N EFFICIENCY IN VEGETABLE PRODUCTION BY FERTILIZER PLACEMENT AND IRRIGATION
Article number
428_14
Pages
131 – 140
Language
Abstract
With the aim of increasing the N uptake efficiency in vegetable crops, experiments with nitrogen placement and irrigation were conducted.
Placement of nitrogen for transplanted cauliflowers significantly increased the N uptake efficiency compared with broadcast nitrogen.
However, despite their shallow rooting, placement of nitrogen for directly sown leeks and onions did not significantly improve the N uptake efficiency.
Placement of phosphorus along with nitrogen significantly increased onion growth rate and N uptake.
The positive effect of N placement to transplanted cauliflowers can be explained by a high demand for plant available nitrogen shortly after plant establishment.
Drought stress during growth of leeks significantly depressed plant production, N uptake, and N uptake efficiency.
Placement of nitrogen for transplanted cauliflowers significantly increased the N uptake efficiency compared with broadcast nitrogen.
However, despite their shallow rooting, placement of nitrogen for directly sown leeks and onions did not significantly improve the N uptake efficiency.
Placement of phosphorus along with nitrogen significantly increased onion growth rate and N uptake.
The positive effect of N placement to transplanted cauliflowers can be explained by a high demand for plant available nitrogen shortly after plant establishment.
Drought stress during growth of leeks significantly depressed plant production, N uptake, and N uptake efficiency.
Authors
J. Sørensen
Keywords
cauliflower, leek, nitrogen recovery, nitrogen uptake, onion
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