Utilization of nitrogen from fertilizers by naked an husked oat forms
Aleksander Szmigiel
kszur@urk.edu.plKatedra Szczegółowej Uprawy Roślin, Akademia Rolnicza w Krakowie (Poland)
Abstract
A field experiment was conducted in 2001–2003, on the soil of very good wheat type, in order to study the uptake and utilization of nitrogen from mineral fertilizers by naked and husked oat forms. Fertilization with ammonium nitrate was dosed 0, 20, 40, 60, 80 and 100 kg N·ha-1. Phosphorus and potassium treatment was dosed 50 kg P2O5·ha-1 and 60 kg K2O·ha-1. Two oats cvs. were cultivated in the experiment: husked Chwat cv. and naked Akt cv. Nitrogen removal with grain and straw of husked oats was, on an average, between 74 kg and 128 kg·ha-1 and by naked oats between 58 and 113 kg·ha-1. An increase in nitrogen fertilization level caused a greater uptake of this element with yield and at the same time the share of fertilizer nitrogen increased regularly and the proportion of nitrogen from soil declined in the total amount of nitrogen removed with oats yield. Utilization of nitrogen from the fertilizer by naked oats was higher and reached between 55 and 80% while by husked oats was on average 7% lower and ranged between 46 and 90%, depending on fertilization level.
Keywords:
nitrogen fertilization, oat, naked and husked forms, uptake of nitrogen, recovery of nitrogen from fertilizersReferences
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Authors
Aleksander Szmigielkszur@urk.edu.pl
Katedra Szczegółowej Uprawy Roślin, Akademia Rolnicza w Krakowie Poland
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