Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).

Abstract: In recent years, quinoa (Chenopodium quinoa Willd.) has attached the interest as a multi-purpose crop. A 3-year field experiment was conducted to determine the effects of tillage systems and fertilization on nitrogen uptake and use efficiency of quinoa crop. The experiment was laid out in...

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Autores principales:	Kakabouki,Ioanna P., Hela,Dimitra, Roussis,Ioannis, Papastylianou,Panagiota, Sestras,Adriana F, Bilalis,Dimitrios J.
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
Materias:	Fertilization nitrogen response NUE indices quinoa tillage
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100220
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spelling	oai:scielo:S0718-951620180001002202018-11-21Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).Kakabouki,Ioanna P.Hela,DimitraRoussis,IoannisPapastylianou,PanagiotaSestras,Adriana FBilalis,Dimitrios J. Fertilization nitrogen response NUE indices quinoa tillage Abstract: In recent years, quinoa (Chenopodium quinoa Willd.) has attached the interest as a multi-purpose crop. A 3-year field experiment was conducted to determine the effects of tillage systems and fertilization on nitrogen uptake and use efficiency of quinoa crop. The experiment was laid out in a split-plot design with two replicates, two main plots [conventional and minimum tillage] and four sub-plots (fertilization treatments: untreated (control), inorganic fertilization of 100 (N1) and 200 kg N ha-1 (N2) and sheep manure). The results indicated that nitrogen uptake and utilization efficiency were only influenced by fertilization. The higher biomass nitrogen content (4.08-4.33%), biomass nitrogen yield (371-386 kg N ha-1), seed nitrogen content (2.59-2.78%), seed nitrogen yield (62.58-65.42 kg N ha-1) and total plant nitrogen uptake (437.20-454.93 kg N ha-1) were found in N2. Nitrogen harvest index and nitrogen utilization efficiency were up to 60% lower and 40% lower, respectively, in inorganic treatments than in the control. Rates of nitrogen higher than 100 kg N ha-1 (N1) did not increase the nitrogen agronomic efficiency. Regarding apparent nitrogen recovery efficiency, the higher values observed under inorganic fertilization and being greater than 100%. The highest rates of change of nitrate reduction in soil (-0.108 to -0.188 N% day-1) and nitrogen increase in plant (0.025 to 0.027 N% day-1) were observed under N2 treatment. As a conclusion, quinoa has a high capacity to take up nitrate from the soil, but presents lower nitrogen remobilization from the vegetative parts into the seeds under high nitrogen supply.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.18 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100220en10.4067/S0718-95162018005000901
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Fertilization nitrogen response NUE indices quinoa tillage
spellingShingle	Fertilization nitrogen response NUE indices quinoa tillage Kakabouki,Ioanna P. Hela,Dimitra Roussis,Ioannis Papastylianou,Panagiota Sestras,Adriana F Bilalis,Dimitrios J. Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).
description	Abstract: In recent years, quinoa (Chenopodium quinoa Willd.) has attached the interest as a multi-purpose crop. A 3-year field experiment was conducted to determine the effects of tillage systems and fertilization on nitrogen uptake and use efficiency of quinoa crop. The experiment was laid out in a split-plot design with two replicates, two main plots [conventional and minimum tillage] and four sub-plots (fertilization treatments: untreated (control), inorganic fertilization of 100 (N1) and 200 kg N ha-1 (N2) and sheep manure). The results indicated that nitrogen uptake and utilization efficiency were only influenced by fertilization. The higher biomass nitrogen content (4.08-4.33%), biomass nitrogen yield (371-386 kg N ha-1), seed nitrogen content (2.59-2.78%), seed nitrogen yield (62.58-65.42 kg N ha-1) and total plant nitrogen uptake (437.20-454.93 kg N ha-1) were found in N2. Nitrogen harvest index and nitrogen utilization efficiency were up to 60% lower and 40% lower, respectively, in inorganic treatments than in the control. Rates of nitrogen higher than 100 kg N ha-1 (N1) did not increase the nitrogen agronomic efficiency. Regarding apparent nitrogen recovery efficiency, the higher values observed under inorganic fertilization and being greater than 100%. The highest rates of change of nitrate reduction in soil (-0.108 to -0.188 N% day-1) and nitrogen increase in plant (0.025 to 0.027 N% day-1) were observed under N2 treatment. As a conclusion, quinoa has a high capacity to take up nitrate from the soil, but presents lower nitrogen remobilization from the vegetative parts into the seeds under high nitrogen supply.
author	Kakabouki,Ioanna P. Hela,Dimitra Roussis,Ioannis Papastylianou,Panagiota Sestras,Adriana F Bilalis,Dimitrios J.
author_facet	Kakabouki,Ioanna P. Hela,Dimitra Roussis,Ioannis Papastylianou,Panagiota Sestras,Adriana F Bilalis,Dimitrios J.
author_sort	Kakabouki,Ioanna P.
title	Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).
title_short	Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).
title_full	Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).
title_fullStr	Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).
title_full_unstemmed	Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).
title_sort	influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( chenopodium quinoa willd.).
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100220
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Influence of fertilization and soil tillage on nitrogen uptake and utilization efficiency of quinoa crop ( Chenopodium quinoa Willd.).

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