<?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>0377-9424</journal-id>
<journal-title><![CDATA[Agronomía Costarricense]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Costarricense]]></abbrev-journal-title>
<issn>0377-9424</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica. Colegio de Ingenieros y Agrónomos. Ministerio de Agricultura y Ganadería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0377-94242022000100025</article-id>
<article-id pub-id-type="doi">10.15517/rac.v46i1.49866</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diagnóstico foliar de nutrimentos de nueve especies forestales tropicales de tres pisos altitudinales en Centro América]]></article-title>
<article-title xml:lang="en"><![CDATA[Foliar nutrient diagnosis of nine tropical forestry species from three altitudinal belts of Central America.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alvarado-Hernández]]></surname>
<given-names><![CDATA[Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chaves-Corea]]></surname>
<given-names><![CDATA[Ronald]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chacón-Madrigal]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Alfaro]]></surname>
<given-names><![CDATA[Wilberth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Blanco-Montero]]></surname>
<given-names><![CDATA[Freddy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica, Centro de Investigaciones Agronómicas, Facultad de Agronomía,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica, Escuela de Biología, Facultad de Ciencias,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica, Centro de Investigaciones Agronómicas, Facultad de Agronomía,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Costa Rica, Centro de Investigaciones Agronómicas, Facultad de Agronomía  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de Costa Rica, Centro de Investigaciones Agronómicas, Facultad de Agronomía,  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>46</volume>
<numero>1</numero>
<fpage>25</fpage>
<lpage>45</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0377-94242022000100025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0377-94242022000100025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0377-94242022000100025&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. Es poca la información sobre concentración foliar de nutrimentos en especies forestales en Centro América. Se hace necesario desarrollar conocimiento que permita manejar de manera satisfactoria la nutrición de estos cultivos. Objetivo. Definirlos niveles ''normales'' de concentración foliar al eliminar los valores atípicos fuera del rango de variación con un valor central entre el primer y tercer cuartil en histogramas de distribución de frecuencias de especies forestales. Materiales y métodos. Con material foliar de especies forestales de Costa Rica, Panamá, Guatemala, México y Colombia se confeccionó una base de datos con 3566 entradas con la que se preparó otra más pequeña para los análisis de las especies que se estudian en el presente documento, provenientes de 3 pisos altitudinales. Se calculó la mediana de valores de nutrimento para toda la población como base para determinar las desviaciones estándar y sus valores normales de concentración de N-P-K-Ca-Mg-S-Fe-Mn-Zn-B-Cu-Al-Na. Resultados. Los resultados fueron una primera aproximación sobre la concentración foliar porcentual total en función del crecimiento de 9 especies forestales en los pisos altitudinales Tropical Húmedo-Muy Húmedo (4,23-6,77%), Tropical Estacionalmente Seco (4,65-6,05%) y Premontano (5,83-9,36%). Son significativamente afectados por el piso altitudinal la concentración de Al en los pisos Tropical Húmedo-Muy Húmedo y el N en el Tropical Estacionalmente Seco. La distribución en porcentaje de las principales especies forestales estudiadas fue C. alliodora (9,36), V. guatemalensis (6,77), C. odorata (6,58), G. arborea (6,05), P. quinata (5,91), A. acuminata (5,83), V. ferruginea (4,81), T. grandis (4,65) y T. amazonia (4,23). Conclusiones. En los pisos Tropical Húmedo-Muy Húmedo la presencia de V. guatemalensis y V. ferruginea mostró elevados valores en mg.L-1 de Al (13 470-22 172)&gt;B(112-130)&gt;Na(401) y porcentuales de P(0,54-0,68).La especie T. amazonia presenta concentraciones porcentuales altas de P(0,59)&gt;B(164)&gt;Cu(46) en mg.L-1. En el bosque Tropical Estacionalmente Seco ninguna de las especies estudiadas (G. arborea, T. grandis y P. quinata) presentó concentraciones elevadas de ningún elemento de los estudiados. En el piso Premontano se encontró valores porcentuales elevados de N(3,57)&gt;K(1,13) en A. acuminata, en C. alliodora de N(3,45)&gt;Ca(3,29)&gt;K(1,24)&gt;Mg(1,02) y en C. odorata de N(3,22).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Introduction. Foliar nutrient concentration in forestry species of Central America is scarce. There is need to develop data to help in satisfactory handle nutrition of these crops. Objetive. To define ''normal'' foliar levels ofnutrients considered as those that after eliminating atypical values in a histogram remain in the first and third quartiles of a normal frequency distribution of data available. Materials and methods. Foliar samples of forestry species collected in Costa Rica, Panamá, Guatemala, México and Colombia were analyzed and data were used to conform a data base with 3566 entries, a subset of data was prepared to generate the information for the 9 species considered in the present document obtained from 3 altitudinal belts. Analyses performed included N-P-K-Ca-Mg-S-Fe-Mn-Zn-B-Cu-Al-Na. Results. Information presented is the first approximation about foliar total concentration of nutrients of nine forestry species in Central America growing in the Tropical Humid-Very Humid (4.23-6.77%), Tropical Seasonally Dry (4.65-6.05%) and Premontane (5.83-9.36%) altitudinal belts. Foliar concentrations of Al in the Tropical Humid-Very Humid and N in the Tropical Seasonally Dry were particularly large. The percentage of main forestry species analyzed was distributed as C. alliodora (9.36), V. guatemalensis (6.77), C. odorata (6.58), G. arborea (6.05), P. quinata (5.91), A. acuminata (5.83), V. ferruginea (4.81), T. grandis (4.65) and T. amazonia (4.23). Conclusions. The presence of V. guatemalensis and V. ferruginea in the Tropical Humid-Very Humid belts affected foliar concentrations to high values (mg.L-1) of Al (13 470-22 172)&gt;B(112-130)&gt;Na(401)&gt;P(0.54-0.68%) and that of T. amazonia the concentrations of P(0.59%), B(164 mg.L-1), and Cu(46 mg.L-1). In the Tropical Seasonally Dry Tropical Forest none of the species studied (G. arborea, T. grandis and P. quinata) showed high foliar concentrations of any element. Foliar values found for N(3.57)&gt;K(1.13) in A. acuminata, of N(3.45)&gt;Ca(3.29)&gt;K(1.24)&gt;Mg(1.02) in C. alliodora, and of N(3.22) in C. odorata in the Premontane belt were considered as high.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Concentración foliar]]></kwd>
<kwd lng="es"><![CDATA[N-P-K-Ca-Mg-S-Fe-Mn-Zn-B-Cu-Al-Na]]></kwd>
<kwd lng="es"><![CDATA[Alnusacuminata]]></kwd>
<kwd lng="es"><![CDATA[Cedrelaodorata]]></kwd>
<kwd lng="es"><![CDATA[Cordiaalliodora]]></kwd>
<kwd lng="es"><![CDATA[Gmelinaarborea]]></kwd>
<kwd lng="es"><![CDATA[Tectonagrandis]]></kwd>
<kwd lng="es"><![CDATA[Terminalia amazonia]]></kwd>
<kwd lng="es"><![CDATA[Vochysiaguatemalensis]]></kwd>
<kwd lng="es"><![CDATA[Vochysiaferruginea y Pachiraquinata]]></kwd>
<kwd lng="es"><![CDATA[Centroamérica]]></kwd>
<kwd lng="en"><![CDATA[Foliar concentration]]></kwd>
<kwd lng="en"><![CDATA[N-P-K-Ca-Mg-S-Fe-Mn-Zn-B-Cu-Al-Na]]></kwd>
<kwd lng="en"><![CDATA[Alnusacuminata]]></kwd>
<kwd lng="en"><![CDATA[Cedrelaodorata]]></kwd>
<kwd lng="en"><![CDATA[Cordiaalliodora]]></kwd>
<kwd lng="en"><![CDATA[Gmelinaarborea]]></kwd>
<kwd lng="en"><![CDATA[Tectonagrandis]]></kwd>
<kwd lng="en"><![CDATA[Terminalia amazonia]]></kwd>
<kwd lng="en"><![CDATA[Vochysiaguatemalensis]]></kwd>
<kwd lng="en"><![CDATA[Vochysiaferruginea]]></kwd>
<kwd lng="en"><![CDATA[Pachiraquinata]]></kwd>
<kwd lng="en"><![CDATA[Central America]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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<name>
<surname><![CDATA[Drechsel]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multiple mineral deficiencies in forest plantations in Liberia.]]></article-title>
<source><![CDATA[Forest Ecologyand Management]]></source>
<year>1992</year>
<volume>48</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>121-43</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
