<?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>1909-0455</journal-id>
<journal-title><![CDATA[Producción + Limpia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. P+L]]></abbrev-journal-title>
<issn>1909-0455</issn>
<publisher>
<publisher-name><![CDATA[Corporación Universitaria Lasallista]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1909-04552020000100025</article-id>
<article-id pub-id-type="doi">10.22507/pml.v15n1a2</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effect of feather compost on soil chemical indicators in CCN-51 cocoa plantation (Theobroma cacao L.)]]></article-title>
<article-title xml:lang="es"><![CDATA[Efecto del Compost de plumas sobre indicadores químicos del suelo en plantación de cacao CCN-51 (Theobroma cacao L.)]]></article-title>
<article-title xml:lang="pt"><![CDATA[Efeito do composto de penas sobre indicadores químicos do solo na plantação de cacau CCN-51 (Theobroma cacao L.)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Florida-Rofner]]></surname>
<given-names><![CDATA[Nelino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Levano-Crisóstomo]]></surname>
<given-names><![CDATA[José Dolores]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jacobo-Salinas]]></surname>
<given-names><![CDATA[Santos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Agraria de la Selva  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Agraria de la Selva  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Hermilio Valdizan  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>15</volume>
<numero>1</numero>
<fpage>25</fpage>
<lpage>34</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1909-04552020000100025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1909-04552020000100025&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1909-04552020000100025&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction. Organic management of cocoa accounts for 60% of production in Peru and large amounts of compost prepared with different inputs are used, in order to improve the quality of the soil and cocoa yields.  Objective. Evaluated the effect of the application of chicken feather compost on the main soil chemical indicators in a cocoa plantation CCN-51 un the Town of Nuevo Progreso, province of Padre Abad in the Ucayali-Peru region was evaluated.  Materials and methods. A randomized complete block design was used, with four treatments and four repetitions where: FC1 was an absolute witness, FC2 feather compost at a rate of 2,000 kg. ha-FC3 feather compost at a rate of 4,000 kg. ha-1 and FC4 feather compost at a rate of 6 000 kg. ha-1. The main chemical indicators of soil quality were evaluated: hydrogen potential (pH), organic matter (OM), total nitrogen (N), available phosphorus (P), potassium (K+), calcium (Ca2+), magnesium (Mg2+) , aluminum (Al3+), available cadmium (Cd2+), changeable acids (AC) and cation exchange capacity (CEC).  Results. The results showed a decrease in exchangeable aluminum and changeable acidity and increases in organic matter, nitrogen, phosphorus, and potassium, depending on the proportion of compost applied, these indicators presented significant differences (p &lt;0.05); The pH, calcium and cadmium available did not show significant differences (p &lt;0.05).  Conclusion. Feather compost (FC) significantly improved the levels of OM, N, P and K+, indicators that define soil quality and reduce aluminum levels, the latter of utmost importance in acidic soils.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción. El manejo orgánico del cacao representa el 60 % de la producción en el Perú y se utilizan grandes cantidades de compost preparado con diferentes insumos, en busca de mejorar la calidad del suelo y los rendimientos del cacao.  Objetivo. Se evaluó el efecto de la aplicación de compost de plumas de pollo sobre los principales indicadores químicos del suelo en una plantación de cacao CCN-51, en el poblado de Nuevo Progreso, provincia Padre Abad en la región Ucayali-Perú.  Materiales y métodos. Se utilizo un diseño de bloques completo al azar, con cuatro tratamiento y cuatro repeticiones en donde: CP1 fue testigo absoluto, CP2 compost de plumas a razón de 2 000 kg. ha-1, CP3 compost de plumas a razón de 4 000 kg. ha-1 y CP4 compost de plumas a razón de 6 000 kg. ha-1. Se evaluaron los principales indicadores químicos de calidad del suelo: potencial de hidrogeno (pH), materia orgánica (MO), nitrógeno total (N), fosforo disponible (P), potasio (K+), calcio (Ca2+), magnesio (Mg2+), aluminio (Al3+), cadmio disponible (Cd2+), acides cambiable (AC) y capacidad de intercambio de cationes (CIC).  Resultados. Los resultados mostraron disminución del aluminio intercambiable y acides cambiable e incrementos de la materia orgánica, nitrógeno, fosforo, y potasio, según la proporción de compost aplicado, estos indicadores presentaron diferencias significativas (p&lt;0.05); el pH, calcio y cadmio disponible no presentó diferencias significativas (p&lt;0.05).  Conclusión . El compost de plumas (CP) mejoró significativamente los niveles de MO, N, P y K+, indicadores que definen la calidad del suelo y reducen los niveles de aluminio, este ultimo de suma importancia en suelos ácidos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução. O manejo orgânico do cacau representa 60% da produção no Peru e grandes quantidades de composto preparado com diferentes insumos são utilizados, a fim de melhorar a qualidade do solo e os rendimentos do cacau.  Objetivo Foi avaliado o efeito da aplicação de composto de penas de galinha nos principais indicadores químicos do solo em uma plantação de cacau. CCN-51 na cidade de Nuevo Progreso, província de Padre Abad, na região de Ucayali-Peru.  Materiais e métodos. O delineamento experimental utilizado foi o de blocos completos casualizados, com quatro tratamentos e quatro repetições, sendo: CP1 testemunha absoluta, CP2 composto de penas a uma taxa de 2 000 kg. ha-1, CP3 composto de penas a uma taxa de 4 000 kg. ha-1 e CP4 a uma taxa de 6 000 kg. ha-1. Os principais indicadores químicos de qualidade do solo foram avaliados: potencial hidrogênio (pH), matéria orgânica (MO), nitrogênio total (N), fósforo disponível (P), potássio (K+), cálcio (Ca2+), magnésio (Mg2+) , alumínio (Al3+), cádmio disponível (Cd2+), ácidos mutáveis (AC) e capacidade de troca catiônica (CEC).  Resultados. Os resultados mostraram uma diminuição do alumínio trocável e dos ácidos trocáveis e aumento da matéria orgânica, nitrogênio, fósforo e potássio, dependendo da proporção de composto aplicado, esses indicadores apresentaram diferenças significativas (p &lt;0,05); O pH, cálcio e cádmio disponíveis não mostraram diferenças significativas (p &lt;0,05).  Conclusão. O composto de penas (CP) melhorou significativamente os níveis de MO, N, P e K, indicadores que definem a qualidade do solo e reduzem os níveis de alumínio, este último de extrema importância em solos ácidos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[aluminum]]></kwd>
<kwd lng="en"><![CDATA[biocomposts]]></kwd>
<kwd lng="en"><![CDATA[soil quality]]></kwd>
<kwd lng="en"><![CDATA[organic production]]></kwd>
<kwd lng="es"><![CDATA[aluminio]]></kwd>
<kwd lng="es"><![CDATA[biocomposts]]></kwd>
<kwd lng="es"><![CDATA[calidad del suelo]]></kwd>
<kwd lng="es"><![CDATA[producción orgánica]]></kwd>
<kwd lng="pt"><![CDATA[alumínio]]></kwd>
<kwd lng="pt"><![CDATA[biocompostos]]></kwd>
<kwd lng="pt"><![CDATA[qualidade do solo]]></kwd>
<kwd lng="pt"><![CDATA[produção orgânica]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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