<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0304-2847</journal-id>
<journal-title><![CDATA[Revista Facultad Nacional de Agronomía Medellín]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. Nac. Agron. Medellín]]></abbrev-journal-title>
<issn>0304-2847</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias Agrarias - Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0304-28472021000109413</article-id>
<article-id pub-id-type="doi">10.15446/rfnam.v74n1.88835</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Yield and quality of winter wheat ( Triticum aestivum L.) grain in relation to nitrogen fertilization]]></article-title>
<article-title xml:lang="es"><![CDATA[Rendimiento y calidad del grano de trigo de invierno ( Triticum aestivum L.) con respecto a la fertilización nitrogenada]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tsvey]]></surname>
<given-names><![CDATA[Yaroslav]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ivanina]]></surname>
<given-names><![CDATA[Roman]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ivanina]]></surname>
<given-names><![CDATA[Vadym]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Senchuk]]></surname>
<given-names><![CDATA[Svitlana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,National Academy of Agrarian Sciences of Ukraine Institute of Bioenergy Crops and Sugar Beet ]]></institution>
<addr-line><![CDATA[Kiev ]]></addr-line>
<country>Ukraine</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>74</volume>
<numero>1</numero>
<fpage>9413</fpage>
<lpage>9422</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0304-28472021000109413&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0304-28472021000109413&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0304-28472021000109413&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Winter wheat is commonly cultivated in Ukraine. This crop has nutritional requirements that have been affected due to the climate changes that in the recent years the country has been suffered. In the spring season, the plant is found in growing stage, which requires a suitable nitrogen nutrition and it must be supplied due to the deficit of this element during the vegetative development. Within this framework, this study aimed to establish the optimal nitrogen rate for winter wheat that was applied in different configurations on leached black soil, and to determine the effectiveness of nitrogen application to the frozen soil surface in early spring as a basis for these fertilizations. The experiment was conducted at the Bila Tserkva Research-Selection Station (Ukraine) during 2017-2019. The soil of this place corresponds to a leached loamy black soil (Mollisol) with content of organic matter between 3.6-3.8%, mobile phosphorus (P2O5) 156-166 mg kg-1, potassium (K2O) 64-77 mg kg-1, and pHKCl 5.8-6.3. A randomized experimental design with four nitrogen rates (0, 60, 80, 110 kg ha-1) with four replications as factorial arrangement was used. The results indicated that winter wheat yield was significantly affected by all nitrogen fertilizer rates (P&lt;0.05). The highest average grain yield was obtained with 110 kg ha-1 nitrogen rate that combined application nitrogen to the frozen soil surface and the foliar feeding with 6.90 t ha-1. In years of regular precipitation during the growing season (2018-2019), nitrogen fertilizers had a more pronounced effect on winter wheat yield than in a year of precipitation deficiency (2017). A significant increase in grain protein content was obtained in variants where foliar feeding of winter wheat with urea solution was a part of fertilization strategy; it was attributed to nitrogen rates of 80 and 110 kg ha-1. The increase in protein content of the grain was less dependent on the weather conditions and was stable through the years of experiment.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El trigo de invierno se cultiva comúnmente en Ucrania. Este cultivo tiene requerimientos nutricionales que se han visto afectados por los cambios climáticos que en los últimos años ha sufrido el país. En la temporada de primavera, la planta se encuentra en etapa de crecimiento, la cual requiere una adecuada nutrición nitrogenada y debe ser suplida por el déficit de este elemento durante su desarrollo vegetativo. En este marco, este estudio tuvo como objetivo establecer la tasa óptima de nitrógeno para el trigo de invierno que se aplicó en diferentes configuraciones en suelo negro lixiviado, y determinar la efectividad de la aplicación de nitrógeno a la superficie del suelo congelado a principios de la primavera como base para estas fertilizaciones. El experimento se llevó a cabo en la estación de investigación y selección de Bila Tserkva (Ucrania) durante 2017-2019. El suelo de este lugar corresponde a un suelo negro arcilloso lixiviado (Mollisol) rico en materia orgánica 3.6-3.8%, fósforo móvil (P2O5) 156-166 mg kg-1, potasio (K2O) 64-77 mg kg-1 y pH KCl 5,8-6,3. Se utilizó un diseño experimental aleatorio con un arreglo factorial, es decir, cuatro dosis de nitrógeno (0, 60, 80, 110 kg ha-1) con cuatro replicas. Los resultados indicaron que el rendimiento del trigo de invierno se vio afectado significativamente por todas las dosis de fertilizantes nitrogenados (P &lt;0,05). El mayor rendimiento promedio de grano se obtuvo con una tasa de nitrógeno de 110 kg ha-1 que combinó la aplicación de nitrógeno a la superficie del suelo congelado y foliar de 6,90 t ha-1. En años de precipitación regular durante la temporada de crecimiento (2018-2019), los fertilizantes nitrogenados tuvieron un efecto más pronunciado en el rendimiento del trigo de invierno que en un año de deficiencia de precipitaciones (2017). Se obtuvo un aumento significativo en el contenido de proteína del grano en variantes donde la alimentación foliar de trigo de invierno con soluciones de urea fue parte de la estrategia de fertilización; se atribuyó a tasas de nitrógeno de 80 y 110 kg ha-1. El aumento en el contenido de proteína del grano dependió menos de las condiciones climáticas y se mantuvo estable a lo largo de los años de experimentación.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Nitrogen]]></kwd>
<kwd lng="en"><![CDATA[Productivity]]></kwd>
<kwd lng="en"><![CDATA[Ukraine]]></kwd>
<kwd lng="en"><![CDATA[Winter wheat]]></kwd>
<kwd lng="es"><![CDATA[Nitrógeno]]></kwd>
<kwd lng="es"><![CDATA[Productividad]]></kwd>
<kwd lng="es"><![CDATA[Ucrania]]></kwd>
<kwd lng="es"><![CDATA[Trigo de invierno]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abedi]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Alemzadeh]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kazemeini]]></surname>
<given-names><![CDATA[SA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Wheat yield and grain protein response to nitrogen amount and timing]]></article-title>
<source><![CDATA[Australian Journal of Crop Science]]></source>
<year>2011</year>
<volume>5</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>330-6</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[AG]]></given-names>
</name>
<name>
<surname><![CDATA[Tawfik]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
<name>
<surname><![CDATA[Hassanein]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Foliar feeding of potassium and urea for maximizing wheat productivity in sandy soil]]></article-title>
<source><![CDATA[Australian Journal of Basic and Applied Sciences]]></source>
<year>2011</year>
<volume>5</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1197-203</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="">
<collab>APK-Inform Ukraine</collab>
<source><![CDATA[Sowing data for the 2020 harvest. Information and analytical agency]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bhatta]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Regassa]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Rose]]></surname>
<given-names><![CDATA[DJ]]></given-names>
</name>
<name>
<surname><![CDATA[Baenziger]]></surname>
<given-names><![CDATA[PS]]></given-names>
</name>
<name>
<surname><![CDATA[Eskridge]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
<name>
<surname><![CDATA[Santra]]></surname>
<given-names><![CDATA[DK]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Genotype, environment, seeding rate, and top-dressed nitrogen effects on end-use quality of modern Nebraska winter wheat]]></article-title>
<source><![CDATA[Science of food and agriculture]]></source>
<year>2017</year>
<volume>97</volume>
<numero>15</numero>
<issue>15</issue>
<page-range>5311-8</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Blandino]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Marinaccio]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Reyneri]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of late-season nitrogen fertilization on grain yield and on flour rheological quality and stability in common wheat, under different production situations]]></article-title>
<source><![CDATA[Italian Journal of Agronomy]]></source>
<year>2016</year>
<numero>11</numero>
<issue>11</issue>
<page-range>107-13</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bobrecka-Jamro]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Kruczek]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Romaniak]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Jarecki]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Buczek]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of the dose and method of top-dressing with nitrogen on the yield and quality of winter wheat grain]]></article-title>
<source><![CDATA[Acta Scientiarum Polonorum. Agricultura]]></source>
<year>2013</year>
<volume>12</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>19-30</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Delin]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Stenberg]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of nitrogen fertilization on nitrate leaching in relation to grain yield response on loamy sand in Sweden]]></article-title>
<source><![CDATA[European Journal of Agronomy]]></source>
<year>2014</year>
<numero>52</numero>
<issue>52</issue>
<page-range>291-6</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dospekhov]]></surname>
<given-names><![CDATA[BA]]></given-names>
</name>
</person-group>
<source><![CDATA[Methods of field experiment (with the basics of statistical processing of research results). M.: Agropromizdat]]></source>
<year>1985</year>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<collab>DSTU</collab>
<source><![CDATA[Soils quality. Determination of mobile phosphorus and potassium compounds by the modified Chirikov method]]></source>
<year>2003</year>
<publisher-name><![CDATA[State Consumer Standard of Ukraine]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<collab>DSTU</collab>
<source><![CDATA[Soil quality. Methods for determining organic matter]]></source>
<year>2005</year>
<publisher-name><![CDATA[State Consumer Standard of Ukraine]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<collab>DSTU</collab>
<source><![CDATA[Soil quality. pH determination]]></source>
<year>2009</year>
<publisher-name><![CDATA[State Consumer Standard of Ukraine]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<collab>DSTU</collab>
<source><![CDATA[Feed, compound feeds, feed materials. Methods for the determination of nitrogen and crude protein content]]></source>
<year>2011</year>
<publisher-name><![CDATA[State Consumer Standard of Ukraine]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Efretue]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gooding]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[White]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Spink]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Hackett]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of nitrogen fertilizer application timing on nitrogen use efficiency and grain yield of winter wheat in Ireland]]></article-title>
<source><![CDATA[Irish Journal of Agricultural and Food Research]]></source>
<year>2016</year>
<volume>55</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>32-47</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gengalo]]></surname>
<given-names><![CDATA[OM]]></given-names>
</name>
<name>
<surname><![CDATA[Gengalo]]></surname>
<given-names><![CDATA[NO]]></given-names>
</name>
<name>
<surname><![CDATA[Sheina]]></surname>
<given-names><![CDATA[EV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative assessment of different types of nitrogen fertilizers applied early spring on black soil]]></article-title>
<source><![CDATA[Scientific Newsletter of NUBIP]]></source>
<year>2019</year>
<page-range>251-9</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gholami]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Akhlaghi]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Shahsavani]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Farrokhi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of urea foliar application on grain yield and quality of winter wheat]]></article-title>
<source><![CDATA[Communications in Soil Science and Plant Analysis]]></source>
<year>2011</year>
<volume>42</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>719-27</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Haile]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Nigussie]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Ayana]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application]]></article-title>
<source><![CDATA[Journal of Soil Science and Plant Nutrition]]></source>
<year>2012</year>
<volume>12</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>389-410</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jankowski]]></surname>
<given-names><![CDATA[KJ]]></given-names>
</name>
<name>
<surname><![CDATA[Hulanicki]]></surname>
<given-names><![CDATA[PS]]></given-names>
</name>
<name>
<surname><![CDATA[Sokolski]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Hulanicki]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Dubis]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Yield and quality of winter wheat (Triticum aestivum L.) in response to different systems of foliar fertilization]]></article-title>
<source><![CDATA[Journal of Elementology]]></source>
<year>2016</year>
<volume>21</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>715-28</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Krivenko]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimization norms and timing of winter wheat nitrogen fertilization in the southern steppe of Ukraine]]></article-title>
<source><![CDATA[Bulletin of Agrarian Science of the Black Sea Area]]></source>
<year>2018</year>
<numero>4</numero>
<issue>4</issue>
<page-range>55-61</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Litke]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Gaile]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Ruza]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of nitrogen fertilization on winter wheat yield and yield quality]]></article-title>
<source><![CDATA[Agronomy Research]]></source>
<year>2018</year>
<volume>16</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>500-9</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zhen]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Qian]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Timing and splitting of nitrogen fertilizer supply to increase crop yield and efficiency of nitrogen utilization in a wheat-peanut relay intercropping system in China]]></article-title>
<source><![CDATA[The Crop Journal]]></source>
<year>2019</year>
<volume>7</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>101-12</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mandic]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Krnjaja]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Tomic]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Bijelic]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Simic]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Muslic]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Gogic]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nitrogen fertilizer influence on wheat yield and use efficiency under different environmental conditions]]></article-title>
<source><![CDATA[Chilean Journal of Agricultural Research]]></source>
<year>2015</year>
<volume>75</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>92-7</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rahman]]></surname>
<given-names><![CDATA[MZ]]></given-names>
</name>
<name>
<surname><![CDATA[Islam]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
<name>
<surname><![CDATA[Karim]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Islam]]></surname>
<given-names><![CDATA[MT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Response of wheat to foliar application of urea fertilizer]]></article-title>
<source><![CDATA[Journal of Sylhet Agricultural University]]></source>
<year>2014</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>39-43</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rasmussen]]></surname>
<given-names><![CDATA[IS]]></given-names>
</name>
<name>
<surname><![CDATA[Dresboll]]></surname>
<given-names><![CDATA[DB]]></given-names>
</name>
<name>
<surname><![CDATA[Thorup-Kristensen]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Winter wheat cultivars and nitrogen (N) fertilization-Effects on root growth, N uptake efficiency and N use efficiency]]></article-title>
<source><![CDATA[European Journal of Agronomy]]></source>
<year>2015</year>
<numero>68</numero>
<issue>68</issue>
<page-range>38-49</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Savchenko]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Miroshnichenko]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of spring nutrition of winter wheat with ammonium sulphate on yield and grain quality]]></article-title>
<source><![CDATA[Bulletin of Lviv National Agrarian University]]></source>
<year>2013</year>
<volume>17</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>186-92</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Staugaitis]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Aleknavi&#269;ien&#279;]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Brazien&#279;]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Marcinkevi&#269;ius]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Paltanavi&#269;ius]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The Influence of foliar fertilization with nitrogen, sulphur, amino acids and microelements on spring wheat]]></article-title>
<source><![CDATA[Zemdirbyste-Agriculture]]></source>
<year>2017</year>
<volume>104</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>123-30</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wagan]]></surname>
<given-names><![CDATA[ZA]]></given-names>
</name>
<name>
<surname><![CDATA[Buriro]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Wagan]]></surname>
<given-names><![CDATA[TA]]></given-names>
</name>
<name>
<surname><![CDATA[Wagan]]></surname>
<given-names><![CDATA[ZA]]></given-names>
</name>
<name>
<surname><![CDATA[Jamro]]></surname>
<given-names><![CDATA[SA]]></given-names>
</name>
<name>
<surname><![CDATA[Memon]]></surname>
<given-names><![CDATA[QUA]]></given-names>
</name>
<name>
<surname><![CDATA[Wagan]]></surname>
<given-names><![CDATA[SA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of foliar applied urea on growth and yield of wheat (Triticum aestivium L.)]]></article-title>
<source><![CDATA[International Journal of Bioorganic Chemistry]]></source>
<year>2017</year>
<volume>2</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>185-91</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Walsh]]></surname>
<given-names><![CDATA[OS]]></given-names>
</name>
<name>
<surname><![CDATA[Shafian]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Christiaens]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Nitrogen Fertilizer Management in Dryland Wheat Cropping Systems]]></article-title>
<source><![CDATA[Plants (Basel)]]></source>
<year>2018</year>
<volume>7</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>9</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yi]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[XZ]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Xiong]]></surname>
<given-names><![CDATA[GY]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimizing fertilizer nitrogen for winter wheat production in Yangtze river region in China]]></article-title>
<source><![CDATA[Journal of Plant Nutrition]]></source>
<year>2015</year>
<numero>38</numero>
<issue>38</issue>
<page-range>1639-55</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
