<?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>0871-018X</journal-id>
<journal-title><![CDATA[Revista de Ciências Agrárias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. de Ciências Agrárias]]></abbrev-journal-title>
<issn>0871-018X</issn>
<publisher>
<publisher-name><![CDATA[Sociedade de Ciências Agrárias de Portugal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0871-018X2021000200001</article-id>
<article-id pub-id-type="doi">10.19084/rca.18994</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Geoestatística multivariada para o delineamento de zonas de manejo para a alocação de experimentos agrícolas]]></article-title>
<article-title xml:lang="en"><![CDATA[Geostatistical multivariate for management zone design for agricultural experiment allocation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Souza]]></surname>
<given-names><![CDATA[Patrícia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[Marcos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[Kátia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[Filipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[Adriano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lima]]></surname>
<given-names><![CDATA[Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Vale do São Francisco Colegiado de Engenharia Agronômica Campus de Ciências Agrárias]]></institution>
<addr-line><![CDATA[Petrolina ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>44</volume>
<numero>2-3</numero>
<fpage>1</fpage>
<lpage>10</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2021000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2021000200001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2021000200001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO O desenvolvimento agrícola depende, consideravelmente, da pesquisa experimental, fazendo-se necessário minimizar as variações existentes no solo para obter resultados mais precisos. Portanto, objetivou-se com o presente trabalho quantificar a variabilidade espacial dos atributos do solo e definir Zonas de Manejo (MZs) mais homogêneas através da geoestatística multivariada para alocar áreas experimentais agrícolas. O experimento foi desenvolvido em Petrolina, Pernambuco, Brasil. Foram coletadas amostras de solo deformadas seguindo uma grade amostral com 56 pontos georreferenciados nas camadas de 0,00 a 0,20 m e 0,40 a 0,60 m de profundidade. Foram realizadas as análises granulométricas e químicas do solo. Foi realizada a análise de componentes principais (ACP). Foi verificada a dependência espacial das variáveis analisadas e dos componentes principais (CPs) utilizando semivariogramas experimentais e os mapas foram obtidos pelo interpolador Krigagem ordinária. A delimitação da área em zonas foi realizada com uso do algoritmo de agrupamento fuzzy c-means. Os resultados mostraram que nos dois primeiros CPs predominaram os elementos relacionados à acidez do solo e que a área deverá ser delimitada em três zonas. O delineamento de MZs com base em CP se mostrou uma ferramenta importante no auxílio da alocação de experimentos agrícolas, reduzindo o erro advindo da heterogeneidade que pode ocorrer dentro dos blocos experimentais.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Agricultural development relies heavily on experimental research and it is necessary to minimize soil variations for more accurate results. Therefore, the present study aims to quantify the spatial variability of soil attributes and to define more homogeneous Management Zones (MZs) through the multivariate geostatistics to allocate agricultural experimental areas. The experiment was carried out in Petrolina city, Pernambuco state, Brazil. Disturbed soil samples were collected following a sample grid with 56 georeferenced points in the layers of 0.00 to 0.20 m and 0.40 to 0.60 m depths. The granulometric and chemical analyzes of the soil were performed. Principal components analysis (PCA) was performed. The spatial dependence of the analyzed variables and the principal components (PCs) was verified using experimental semivariogramas. Maps were obtained by the ordinary Kriging interpolator. The delimitation of the MZ was performed using the fuzzy c-means clustering algorithm. The results showed that in the PC the attributes related to soil acidity predominated and that the area should be delimited in three zones. The MZs delimitation using PC showed as an important tool in assisting the allocation of agricultural experiments, reducing the error arising from the heterogeneity that may occur within the experimental blocks.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Análise espacial]]></kwd>
<kwd lng="pt"><![CDATA[Estatística multivariada]]></kwd>
<kwd lng="pt"><![CDATA[Solos]]></kwd>
<kwd lng="en"><![CDATA[Spatial analysis]]></kwd>
<kwd lng="en"><![CDATA[Multivariate statistics]]></kwd>
<kwd lng="en"><![CDATA[Soils]]></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[Alvares]]></surname>
<given-names><![CDATA[C.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Stape]]></surname>
<given-names><![CDATA[J.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Sentelhas]]></surname>
<given-names><![CDATA[P.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Moraes]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Leonardo]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sparovek]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Köppen's climate classification map for Brazil]]></article-title>
<source><![CDATA[Meteorologische Zeitschrift]]></source>
<year>2013</year>
<volume>22</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>711-28</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[P.S.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Franco]]></surname>
<given-names><![CDATA[L.B.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[S.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sodré]]></surname>
<given-names><![CDATA[G.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Queiroz]]></surname>
<given-names><![CDATA[D.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Lima]]></surname>
<given-names><![CDATA[J.S.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cacao Crop Management Zones Determination Based on Soil Properties and Crop Yield]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>2016</year>
<volume>40</volume>
<page-range>1-17</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carneiro]]></surname>
<given-names><![CDATA[J.S.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[A.C.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Fidelis]]></surname>
<given-names><![CDATA[R.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva Neto]]></surname>
<given-names><![CDATA[S.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[A.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[R.R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diagnóstico e manejo da variabilidade espacial da fertilidade do solo no Cerrado do Piauí]]></article-title>
<source><![CDATA[Ciências Agroambientais]]></source>
<year>2016</year>
<volume>14</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>10-21</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castilho]]></surname>
<given-names><![CDATA[K.B.]]></given-names>
</name>
<name>
<surname><![CDATA[Cortez]]></surname>
<given-names><![CDATA[J.W.]]></given-names>
</name>
<name>
<surname><![CDATA[Olszevski]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Salviano]]></surname>
<given-names><![CDATA[A.M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análise Multivariada da qualidade química de um Latossolo sob sistemas de manejo do solo]]></article-title>
<source><![CDATA[Revista Agrarian]]></source>
<year>2017</year>
<volume>10</volume>
<numero>36</numero>
<issue>36</issue>
<page-range>162-9</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Córdoba]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Bruno]]></surname>
<given-names><![CDATA[C.I.]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[J.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Peralta]]></surname>
<given-names><![CDATA[N.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Balzarini]]></surname>
<given-names><![CDATA[M.G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Protocol for multivariate homogeneous zone delineation in precision agriculture]]></article-title>
<source><![CDATA[Biosystems Engineering]]></source>
<year>2016</year>
<volume>143</volume>
<page-range>95-107</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dai]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Fu]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Penttinen]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spatial variability of soil nutrients in forest areas: A case study from subtropical China]]></article-title>
<source><![CDATA[Journal Plant Nutrition and Soil Science]]></source>
<year>2018</year>
<volume>181</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>827-35</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dalchiavon]]></surname>
<given-names><![CDATA[F.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[M.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Andreotti]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Montanari]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variabilidade espacial de atributos da fertilidade de um Latossolo Vermelho distroférrico sob sistema de plantio direto]]></article-title>
<source><![CDATA[Revista Ciência Agronômica]]></source>
<year>2012</year>
<volume>43</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>453-61</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<collab>EMBRAPA</collab>
<source><![CDATA[Sistema Brasileiro de Classificação de Solos]]></source>
<year>2018</year>
<edition>5ª</edition>
<publisher-loc><![CDATA[Rio de Janeiro ]]></publisher-loc>
<publisher-name><![CDATA[Embrapa]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Freitas]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Casagrande]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[I.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[M.C.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[L.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Técnicas multivariadas na avaliação de atributos de um Latossolo vermelho submetido a diferentes manejos]]></article-title>
<source><![CDATA[Revista Brasileira de Ciências Agrárias]]></source>
<year>2015</year>
<volume>10</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>17-26</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fridgen]]></surname>
<given-names><![CDATA[J.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kitchen]]></surname>
<given-names><![CDATA[N.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Drummond]]></surname>
<given-names><![CDATA[K.A.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Wiebold]]></surname>
<given-names><![CDATA[S.T.]]></given-names>
</name>
<name>
<surname><![CDATA[Fraisse]]></surname>
<given-names><![CDATA[C.W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Software Management Zone Analyst (MZA): Software for subfield management zone delineation]]></article-title>
<source><![CDATA[Agronomy Journal]]></source>
<year>2004</year>
<volume>96</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>101-7</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grego]]></surname>
<given-names><![CDATA[C.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Vieira]]></surname>
<given-names><![CDATA[S.R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variabilidade espacial de propriedades físicas do solo em uma parcela experimental]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>2005</year>
<volume>29</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>169-77</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gomes]]></surname>
<given-names><![CDATA[F.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Garcia]]></surname>
<given-names><![CDATA[C.H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Estatística aplicada a experimentos agronômicos e florestais: exposição com exemplos e orientações para uso de aplicativos]]></source>
<year>2002</year>
<publisher-loc><![CDATA[Piracicaba ]]></publisher-loc>
<publisher-name><![CDATA[FEALQ]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hair]]></surname>
<given-names><![CDATA[J.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Anderson]]></surname>
<given-names><![CDATA[R.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Tatham]]></surname>
<given-names><![CDATA[R.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Black]]></surname>
<given-names><![CDATA[W.C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análise multivariada de dados]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Porto Alegre ]]></publisher-loc>
<publisher-name><![CDATA[Bookman]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hongyu]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandanielo]]></surname>
<given-names><![CDATA[V.L.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira Junior]]></surname>
<given-names><![CDATA[G.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análise de Componentes Principais: Resumo Teórico, Aplicação e Interpretação]]></article-title>
<source><![CDATA[E &amp; S Engineering and Science]]></source>
<year>2015</year>
<volume>1</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>83-90</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Irigoin]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Paladino]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Civeira]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Physical and chemical variables analysis for clustering of soils in the longitudinal dunes of Sandy Pampa, Argentina]]></article-title>
<source><![CDATA[Environmental Earth Science]]></source>
<year>2016</year>
<volume>75</volume>
<page-range>1196</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="">
<collab>IBGE</collab>
<source><![CDATA[Manual técnico de pedologia]]></source>
<year>2015</year>
<edition>3ª</edition>
<publisher-loc><![CDATA[Rio de Janeiro, Brasil ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Heap]]></surname>
<given-names><![CDATA[A.D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of comparative studies of spatial interpolation methods in environmental sciences: Performance and impact factors]]></article-title>
<source><![CDATA[Ecological Informatics]]></source>
<year>2011</year>
<volume>6</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>228-41</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mion]]></surname>
<given-names><![CDATA[R.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Nascimento]]></surname>
<given-names><![CDATA[E.M.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Sales]]></surname>
<given-names><![CDATA[F.A.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[S.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Duarte]]></surname>
<given-names><![CDATA[J.M.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Sousa]]></surname>
<given-names><![CDATA[B.M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variabilidade espacial da porosidade total, umidade e resistência do solo à penetração de um Argissolo amarelo]]></article-title>
<source><![CDATA[Semina: Ciências Agrárias]]></source>
<year>2012</year>
<volume>33</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>2057-66</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mingoti]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análise de dados através de métodos de estatística multivariada: uma abordagem aplicada]]></source>
<year>2007</year>
<publisher-loc><![CDATA[Belo Horizonte ]]></publisher-loc>
<publisher-name><![CDATA[Editora UFMG]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miqueloni]]></surname>
<given-names><![CDATA[D.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Gianello]]></surname>
<given-names><![CDATA[E.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bueno]]></surname>
<given-names><![CDATA[C.R.P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variabilidade espacial de atributos e perda de solo na definição de zonas de manejo]]></article-title>
<source><![CDATA[Pesquisa Agropecuária Tropical]]></source>
<year>2015</year>
<volume>45</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>18-28</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nascimento]]></surname>
<given-names><![CDATA[P.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[B.R.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Bassoi]]></surname>
<given-names><![CDATA[L.H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Zonas homogêneas de atributos do solo para o manejo de irrigação em pomar de videira]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>2014</year>
<volume>38</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>1101-13</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Odeh]]></surname>
<given-names><![CDATA[I.O.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mcbratney]]></surname>
<given-names><![CDATA[A.B.]]></given-names>
</name>
<name>
<surname><![CDATA[Chittleborough]]></surname>
<given-names><![CDATA[D.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil pattern recognition with fuzzy-c-means: application to classification and soil-landform interrelationships]]></article-title>
<source><![CDATA[Soil Science Society of America Journal]]></source>
<year>1992</year>
<volume>56</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>505-16</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[M.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Dalposso]]></surname>
<given-names><![CDATA[G.H.]]></given-names>
</name>
<name>
<surname><![CDATA[Espires]]></surname>
<given-names><![CDATA[C.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Faria]]></surname>
<given-names><![CDATA[J.F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mapas temáticos de componentes principais para caracterização de propriedades químicas do solo]]></article-title>
<source><![CDATA[Engenharia na Agricultura]]></source>
<year>2015</year>
<volume>25</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>529-40</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[I.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Freitas]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Aquino]]></surname>
<given-names><![CDATA[R.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Casagrande]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Campos]]></surname>
<given-names><![CDATA[M.C.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[L.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chemical and physical pedoindicators of soils with different textures: spatial variability]]></article-title>
<source><![CDATA[Environmental Earth Science]]></source>
<year>2018</year>
<volume>77</volume>
<page-range>81</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Oliver]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Webster]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A tutorial guide to geostatistics: computing and modelling variograms and kriging]]></article-title>
<source><![CDATA[Catena]]></source>
<year>2014</year>
<volume>113</volume>
<page-range>56-9</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ribeiro]]></surname>
<given-names><![CDATA[A.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Guimarães]]></surname>
<given-names><![CDATA[P.T.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Alvarez]]></surname>
<given-names><![CDATA[V.H.V.]]></given-names>
</name>
</person-group>
<source><![CDATA[Recomendações para uso de corretivos e fertilizantes em Minas Gerais]]></source>
<year>1999</year>
<publisher-loc><![CDATA[Viçosa ]]></publisher-loc>
<publisher-name><![CDATA[Comissão de Fertilidade do Solo do Estado de Minas Gerais - CFSEMG]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sana]]></surname>
<given-names><![CDATA[R.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Anghinoni]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Brandão]]></surname>
<given-names><![CDATA[Z.N.]]></given-names>
</name>
<name>
<surname><![CDATA[Holzschuh]]></surname>
<given-names><![CDATA[M.J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Variabilidade espacial de atributos físico-químicos do solo e seus efeitos na produtividade do algodoeiro]]></article-title>
<source><![CDATA[Revista Brasileira de Engenharia Agrícola e Ambiental]]></source>
<year>2014</year>
<volume>18</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>994-1002</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[R.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[H.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Ker]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Anjos]]></surname>
<given-names><![CDATA[L.H.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Shimizu]]></surname>
<given-names><![CDATA[S.H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Manual de descrição e coleta de solo no campo]]></source>
<year>2015</year>
<edition>7ª</edition>
<publisher-loc><![CDATA[Viçosa ]]></publisher-loc>
<publisher-name><![CDATA[Sociedade Brasileira de Ciência do Solo]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Seidel]]></surname>
<given-names><![CDATA[E.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[M.S.D.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Classification for a Geostatistical Index of Spatial Dependence]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>2016</year>
<volume>40</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="book">
<collab>Soil Survey Staff</collab>
<source><![CDATA[Keys to soil taxonomy]]></source>
<year>2014</year>
<edition>12th</edition>
<publisher-loc><![CDATA[Washington, DC ]]></publisher-loc>
<publisher-name><![CDATA[United States Department of Agriculture, Natural Resources Conservation Service]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Souza]]></surname>
<given-names><![CDATA[E.R.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Melo]]></surname>
<given-names><![CDATA[H.F.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Almeida]]></surname>
<given-names><![CDATA[B.G.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Melo]]></surname>
<given-names><![CDATA[D.V.M.D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparação de métodos de extração da solução do solo]]></article-title>
<source><![CDATA[Revista Brasileira de Engenharia Agrícola e Ambiental]]></source>
<year>2013</year>
<volume>17</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>510-7</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[P.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Donagemma]]></surname>
<given-names><![CDATA[G.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Fontana]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Teixeira]]></surname>
<given-names><![CDATA[W.G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Manual de métodos de análises de solos]]></source>
<year>2017</year>
<edition>3</edition>
<publisher-loc><![CDATA[Brasília ]]></publisher-loc>
<publisher-name><![CDATA[Embrapa]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Teske]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Giasson]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Bagatini]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Produção de um mapa pedológico associando técnicas comuns aos mapeamentos digitais de solos com delineamento manual de unidades de mapeamento]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>2015</year>
<volume>39</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>950-9</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vieira]]></surname>
<given-names><![CDATA[S.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[J.R.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Ceddia]]></surname>
<given-names><![CDATA[M.B.]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[A.P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Detrending non stationary data for geostatistical applications]]></article-title>
<source><![CDATA[Bragantia]]></source>
<year>2010</year>
<volume>69</volume>
<numero>sp</numero>
<issue>sp</issue>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Warrick]]></surname>
<given-names><![CDATA[A.W.]]></given-names>
</name>
<name>
<surname><![CDATA[Nielsen]]></surname>
<given-names><![CDATA[D.R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spatial variability of soil physical properties in the field]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Hillel]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Applications of soil physics]]></source>
<year>1980</year>
<page-range>319-44</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Academic Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Norvell]]></surname>
<given-names><![CDATA[W.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Welch]]></surname>
<given-names><![CDATA[R.M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kriging on highly skewed data for DTPA-extractable soil Zn with auxiliary information for pH and organic carbon]]></article-title>
<source><![CDATA[Geoderma]]></source>
<year>2006</year>
<volume>134</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>187-99</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
