<?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>S0304-28472020000309349</article-id>
<article-id pub-id-type="doi">10.15446/rfnam.v73n3.85259</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Gypsum incubation tests to evaluate its potential effects on acidic soils of Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Pruebas de incubación con yeso para evaluar sus potenciales efectos en suelos ácidos de Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuervo-Alzate]]></surname>
<given-names><![CDATA[Jorge Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osorio]]></surname>
<given-names><![CDATA[Nelson Walter]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>73</volume>
<numero>3</numero>
<fpage>9349</fpage>
<lpage>9359</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0304-28472020000309349&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0304-28472020000309349&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0304-28472020000309349&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Tropical soils are characterized by acidity and poor plant nutrient availability, limiting their agricultural productivity. These soils are commonly amended with lime, but its low solubility impairs its effectiveness to enhance soil fertility. The use of gypsum has gained attention among farmers due to its higher solubility and mobility in the soil, local accessibility, and low price. Therefore, this study was conducted to determine the effects of Agricultural Gypsum (AG) addition on ten Colombian acid soils that had poor fertility and contrasting their physical and chemical characteristics. Surface (0-20 cm) soil samples were air-dried, sieved (&lt;2 mm), and transferred into plastic vases, 40 g (dry base) per vase. Increasing rates of gypsum were added by duplicate: 0.0, 0.25, 0.5, 1.0, 2.0, 4.0, 8.0, and 16.0 g kg-1. Then, the soils were incubated for two weeks and watered to maintain 50% of their maximum water holding capacity. Soil pH, Al+3, Ca+2, Mg+2, K+, S-SO4 -2, and P-H2PO4 -2 were measured using standard methods. The results showed that AG addition significantly (P&lt;0.05) increased soil exchangeable Ca+2-K+, Ca+2 saturation, S-SO4 -2 concentration, and exchangeable Al+3, particularly with doses above 4.0 g kg-1. In contrast, soil Al+3 saturation, P-H2PO4 -2 and pH significantly decreased as the AG doses increased, while soil exchangeable Mg+2 levels were not significantly affected. The use of gypsum incubation tests could be promissory for its effects on soil amelioration associated mainly to increase soil exchangeable Ca2+ and S-SO4 2- and to decrease Al3+ saturation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los suelos tropicales son característicamente ácidos y pobres en nutrientes, lo cual limita su productividad agrícola. Estos suelos usualmente son tratados con cal, pero su baja solubilidad limita su efectividad para mejorar la fertilidad. El uso de yeso agrícola ha ganado mucha atención debido a su mayor solubilidad y movilidad en el suelo, disponibilidad local y bajo precio. Por tanto, se realizó un estudio para determinar tales efectos en diez suelos acidos Colombianos con baja fertilidad y diferentes características físicas y químicas. Muestras de estos suelos (0-20 cm) se secaron al aire, tamizaron (&lt;2 mm) y transfirieron a vasos plásticos. Dosis crecientes de yeso se aplicaron por cuadruplicado: 0,0; 0,25; 0,5; 1,0; 2,0; 4,0; 8,0 y 16,0 g kg-1. Los suelos se humedecieron para mantenerlos a 50% de su máxima capacidad de retención de agua durante dos semanas. Se midió pH, Al+3, Ca+2, Mg+2, K+, S-SO4 -2 y P-H2PO4 -2 usando métodos estandarizados. Los resultados muestran que al adicionar yeso agrícola se incrementó significativamente (P&lt;0,05) los niveles de Ca+2-K+ intercambiable, saturación de Ca+2 , S-SO4 -2 y Al+3 intercambiable, particularmente con dosis mayores de 4,0 g kg-1. En contraste, con el incremento de la dosis de yeso agrícola disminuyeron significativamente la saturación de Al+3 , y el pH; los niveles de Mg+2 no fueron significativamente afectados. El uso de las pruebas de incubación de yeso agrícola es promisorio para detectar mejoras en el suelo a través del incremento en los niveles de Ca2+ y S-SO4 2- y la disminución de la saturación de Al3+.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Acidity]]></kwd>
<kwd lng="en"><![CDATA[Agricultural gypsum]]></kwd>
<kwd lng="en"><![CDATA[Aluminum]]></kwd>
<kwd lng="en"><![CDATA[Calcium sulfate]]></kwd>
<kwd lng="en"><![CDATA[pH]]></kwd>
<kwd lng="en"><![CDATA[Soil fertility]]></kwd>
<kwd lng="es"><![CDATA[Acidez]]></kwd>
<kwd lng="es"><![CDATA[Yeso agrícola]]></kwd>
<kwd lng="es"><![CDATA[Aluminio]]></kwd>
<kwd lng="es"><![CDATA[Sulfato de calcio]]></kwd>
<kwd lng="es"><![CDATA[pH]]></kwd>
<kwd lng="es"><![CDATA[Fertilidad del suelo]]></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[Alva]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Summer]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Noble]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Alleviation of aluminum toxicity by phosphogypsum]]></article-title>
<source><![CDATA[Communications in Soil Science and Plant Analysis]]></source>
<year>1988</year>
<volume>19</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>385-403</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baldión]]></surname>
<given-names><![CDATA[JV]]></given-names>
</name>
<name>
<surname><![CDATA[Guzman]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<source><![CDATA[Caracterización del clima y de la disponibilidad hídrica en el ecotopo 206A]]></source>
<year>2008</year>
<page-range>3-7</page-range><publisher-loc><![CDATA[Chinchiná ]]></publisher-loc>
<publisher-name><![CDATA[Cenicafé]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baldión]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Guzman]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<source><![CDATA[Caracterización del clima y de la disponibilidad hídrica en el ecotopo 107B]]></source>
<year>2009</year>
<page-range>3-5</page-range><publisher-loc><![CDATA[Chinchiná ]]></publisher-loc>
<publisher-name><![CDATA[Cenicafé]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barceló]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Ch]]></surname>
<given-names><![CDATA[Poschenrieder]]></given-names>
</name>
<name>
<surname><![CDATA[Vázquez]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[Gunsé]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aluminium phytotoxicity: A challenge for plant scientists]]></article-title>
<source><![CDATA[Fertilizer Research]]></source>
<year>1996</year>
<numero>43</numero>
<issue>43</issue>
<page-range>217-23</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[JR]]></given-names>
</name>
</person-group>
<source><![CDATA[Soil testing: sampling, correlation, calibration, and interpretation]]></source>
<year>1987</year>
<volume>21</volume>
<page-range>1-14</page-range><publisher-loc><![CDATA[Madison ]]></publisher-loc>
<publisher-name><![CDATA[Soil Science Society of America, Inc]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castro]]></surname>
<given-names><![CDATA[HE]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[MI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fertilidad de suelos y fertilizantes]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Burbano Orjuela]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Silva Mojica]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<source><![CDATA[Ciencia del Suelo: Principios Básicos]]></source>
<year>2013</year>
<edition>Segunda</edition>
<page-range>217-80</page-range><publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Sociedad Colombiana de la Ciencia del Suelo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Elrashidi]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[West]]></surname>
<given-names><![CDATA[LT]]></given-names>
</name>
<name>
<surname><![CDATA[Seybold]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
<name>
<surname><![CDATA[Benham]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
<name>
<surname><![CDATA[Schoeneberger]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ferguson]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of gypsum addition on solubility of nutrients in soil amended with peat]]></article-title>
<source><![CDATA[Soil Science]]></source>
<year>2010</year>
<volume>175</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>162-72</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ernani]]></surname>
<given-names><![CDATA[PR]]></given-names>
</name>
<name>
<surname><![CDATA[Miquelluti]]></surname>
<given-names><![CDATA[DJ]]></given-names>
</name>
<name>
<surname><![CDATA[Fontoura]]></surname>
<given-names><![CDATA[SMV]]></given-names>
</name>
<name>
<surname><![CDATA[Kaminski]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Almeida]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Downward movement of soil cations in highly weathered soils caused by addition of gypsum]]></article-title>
<source><![CDATA[Communications in Soil Science and Plant Analysis]]></source>
<year>2006</year>
<volume>37</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>571-86</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Espinosa]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<name>
<surname><![CDATA[Lobo]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efectos de la aplicación de fosfoyeso sobre algunas propiedades de un suelo franco-arenoso]]></article-title>
<source><![CDATA[Venesuelos]]></source>
<year>1999</year>
<volume>7</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>7-11</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Favarin]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Moscardini]]></surname>
<given-names><![CDATA[DB]]></given-names>
</name>
<name>
<surname><![CDATA[De Souza]]></surname>
<given-names><![CDATA[LT]]></given-names>
</name>
<name>
<surname><![CDATA[Baptistella]]></surname>
<given-names><![CDATA[JLC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Camhinos para aumentar a produtividade do café arábica]]></article-title>
<source><![CDATA[Informações Agronômicas]]></source>
<year>2018</year>
<numero>164</numero>
<issue>164</issue>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fisher]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<source><![CDATA[Amending soils with gypsum. Crops and soils magazine]]></source>
<year>2011</year>
<page-range>4-9</page-range><publisher-loc><![CDATA[Madison ]]></publisher-loc>
<publisher-name><![CDATA[American Society of Agronomy]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Caballero]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Baldión]]></surname>
<given-names><![CDATA[JV]]></given-names>
</name>
</person-group>
<source><![CDATA[Ecotopos cafeteros de Colombia]]></source>
<year>1991</year>
<publisher-loc><![CDATA[Santa Fe de Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Federación Nacional de Cafeteros]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Identificación de las principales Unidades de Suelos de la zona cafetera]]></article-title>
<source><![CDATA[Manual del Cafetero Colombiano]]></source>
<year>2013</year>
<page-range>269-83</page-range><publisher-loc><![CDATA[Cenicafé ]]></publisher-loc>
<publisher-name><![CDATA[Santafé de Bogotá]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Havlin]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Tisdale]]></surname>
<given-names><![CDATA[SL]]></given-names>
</name>
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[WL]]></given-names>
</name>
<name>
<surname><![CDATA[Beaton]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<source><![CDATA[Soil fertility and fertilizers. An introduction to nutrient management]]></source>
<year>1999</year>
<edition>Sixth</edition>
<publisher-loc><![CDATA[New Jersey ]]></publisher-loc>
<publisher-name><![CDATA[Prentice-Hall Inc]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<collab>Instituto Geográfico Agustín Codazzi</collab>
<source><![CDATA[Suelos de Colombia]]></source>
<year>1995</year>
<publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[IGAC]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<collab>Instituto Geográfico Agustín Codazzi</collab>
<source><![CDATA[Manejo de suelos colombianos]]></source>
<year>2014</year>
<publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Imprenta Nacional de Colombia S.A.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="book">
<collab>Instituto Geográfico Agustín Codazzi.</collab>
<source><![CDATA[Suelos y tierras de Colombia]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Imprenta Nacional de Colombia S.A]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kalinitchenko]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Nosov]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phosphogypsum: P Fertilizer by-product and soil amendment]]></article-title>
<source><![CDATA[Better Crops]]></source>
<year>2019</year>
<volume>103</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>50-3</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Madero]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Principios elementales de génesis y clasificación de suelos]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Burbano Orjuela]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Silva Mojica]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<source><![CDATA[Ciencia del Suelo: Principios Básicos]]></source>
<year>2013</year>
<edition>Segunda</edition>
<page-range>5-71</page-range><publisher-loc><![CDATA[Bogotá ]]></publisher-loc>
<publisher-name><![CDATA[Sociedad Colombiana de la Ciencia del Suelo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Osorio]]></surname>
<given-names><![CDATA[NW]]></given-names>
</name>
</person-group>
<source><![CDATA[Manejo de Nutrientes en Suelos del Trópico]]></source>
<year>2018</year>
<edition>Segunda</edition>
<publisher-loc><![CDATA[Medellín ]]></publisher-loc>
<publisher-name><![CDATA[Edición. L. Vieco SAS]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Osorno]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<source><![CDATA[Mitos y realidades de las cales y enmiendas en Colombia]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Medellín, Colombia ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Prochnow]]></surname>
<given-names><![CDATA[LI]]></given-names>
</name>
<name>
<surname><![CDATA[Caires]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phosphogypsum use to reduce subsoil acidity: the Brazilian experience]]></article-title>
<source><![CDATA[Better Crops with plant foods]]></source>
<year>2016</year>
<volume>100</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>13-5</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[BZ]]></given-names>
</name>
<name>
<surname><![CDATA[Toledo]]></surname>
<given-names><![CDATA[JPV]]></given-names>
</name>
<name>
<surname><![CDATA[Bastos]]></surname>
<given-names><![CDATA[ARR]]></given-names>
</name>
<name>
<surname><![CDATA[Guimarães]]></surname>
<given-names><![CDATA[PTG]]></given-names>
</name>
<name>
<surname><![CDATA[Coscione]]></surname>
<given-names><![CDATA[AR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Doses de gesso em cafeeiro: infIuência nos teores de cálcio, magnésio, potássio e pH na solução de um Latossolo Vermelho distrófico]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>2013</year>
<volume>37</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>1018-26</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sadeghian]]></surname>
<given-names><![CDATA[KS]]></given-names>
</name>
<name>
<surname><![CDATA[Lynce]]></surname>
<given-names><![CDATA[SLA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variabilidad del suelo en lotes cafeteros - consideraciones para el muestreo]]></article-title>
<source><![CDATA[Avance Técnico Cenicafé]]></source>
<year>2014</year>
<numero>446</numero>
<issue>446</issue>
<publisher-loc><![CDATA[Chinchiná ]]></publisher-loc>
<publisher-name><![CDATA[Cenicafé]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salas]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
<name>
<surname><![CDATA[Smyth]]></surname>
<given-names><![CDATA[TJ]]></given-names>
</name>
<name>
<surname><![CDATA[Alpizar]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Boniche]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Alvarado]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rivera]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Corrección de la acidez del suelo con Ca y Mg y su efecto en el desarrollo del sistema radical del palmito en la etapa de previvero]]></article-title>
<source><![CDATA[Agronomía Costarricense]]></source>
<year>2002</year>
<volume>26</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>87-94</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saadaoui]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Ghazel]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Ben Romdhane]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Massoudi]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phosphogypsum: potential uses and problems-a review]]></article-title>
<source><![CDATA[International Journal of Environmental Studies]]></source>
<year>2017</year>
<volume>74</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>558-67</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Takahashi]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Ikeda]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Nakamura]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Nanzyo]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efficiency of gypsum application to acid Andosols estimated using aluminum release rates and plant root growth]]></article-title>
<source><![CDATA[Soil Science and Plant Nutrition]]></source>
<year>2006</year>
<volume>52</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>584-92</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Uchida]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Hue]]></surname>
<given-names><![CDATA[NV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil Acidity and Liming]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Uchida]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<source><![CDATA[Plant Nutrient Management in Hawaii&#8217;s Soils, Approaches for Tropical and Subtropical Agriculture]]></source>
<year>2000</year>
<publisher-loc><![CDATA[Manoa ]]></publisher-loc>
<publisher-name><![CDATA[University of Hawaii]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="">
<collab>USDA</collab>
<source><![CDATA[Keys to soil taxonomy]]></source>
<year>2010</year>
<edition>Eleventh</edition>
<publisher-loc><![CDATA[Washington ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Van Raij]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<source><![CDATA[Gesso agricola na melhoria do ambiente radicular no subsolo]]></source>
<year>1988</year>
<publisher-loc><![CDATA[São Paulo ]]></publisher-loc>
<publisher-name><![CDATA[Associação Nacional para Difusao de Adubos e Corretivos Agrícolas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Van Raij]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<source><![CDATA[Gesso na agricultura]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Brasil ]]></publisher-loc>
<publisher-name><![CDATA[Instituto Agronômico Campinas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Von Uexkull]]></surname>
<given-names><![CDATA[HR]]></given-names>
</name>
</person-group>
<source><![CDATA[Efficient fertilizer use in acid upland soils of the humid tropics]]></source>
<year>1986</year>
<publisher-loc><![CDATA[Roma ]]></publisher-loc>
<publisher-name><![CDATA[Food and Agriculture Organization of the United Nations]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zapata]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<source><![CDATA[Los procesos químicos del suelo]]></source>
<year>2014</year>
<edition>Primera</edition>
<page-range>167-77</page-range><publisher-loc><![CDATA[Medellín ]]></publisher-loc>
<publisher-name><![CDATA[Universidad nacional de Colombia]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
