<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792019000400371</article-id>
<article-id pub-id-type="doi">10.28940/terra.v37i4.520</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Contenido inorgánico de nitrógeno, fósforo y potasio de abonos de origen natural para su uso en agricultura orgánica]]></article-title>
<article-title xml:lang="en"><![CDATA[Inorganic nitrogen, phosphorus and potassium content of natural fertilizers for use in organic agriculture]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltrán-Morales]]></surname>
<given-names><![CDATA[Félix Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nieto-Garibay]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murillo-Chollet]]></surname>
<given-names><![CDATA[Jesús Salvador Argenis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Espinoza]]></surname>
<given-names><![CDATA[Francisco Higinio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Troyo-Dieguez]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcala-Jauregui]]></surname>
<given-names><![CDATA[Jorge Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murillo-Amador]]></surname>
<given-names><![CDATA[Bernardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Baja California Sur  ]]></institution>
<addr-line><![CDATA[La Paz B.C.S.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigaciones Biológicas del Noroeste  ]]></institution>
<addr-line><![CDATA[La Paz B.C.S.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Agronomía y Veterinaria ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>37</volume>
<numero>4</numero>
<fpage>371</fpage>
<lpage>378</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792019000400371&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792019000400371&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792019000400371&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: El uso indiscriminado de fertilizantes ha contribuido a la salinidad del suelo tanto como al agotamiento de recursos minerales del mismo ocasionando así dependencia a los fertilizantes sintéticos por parte de los productores agrícolas. El objetivo del presente trabajo fue determinar el contenido inorgánico de N, P, K en las formas asimilables para las plantas de seis abonos orgánicos potenciales a utilizarse en la agricultura orgánica, bajos los principios del cuidado al medio ambiente. Las determinaciones de los elementos fueron realizados a través de un espectrofotómetro marca HANNA modelo HI83225-01. El abono con mayor contenido de nitrógeno es sus formas asimilables fue el guano de murciélago, seguido por la gallinaza y lombricomposta Fertium®. En el caso del fósforo, el abono que mostró la más alta cantidad fue de igual manera el guano de murciélago seguido por la gallinaza y estiércol de vaca. Para la determinación de potasio fue el guano de murciélago quien obtuvo el resultado más alto junto con la gallinaza y lombricomposta Fertium ®. Los seis abonos observaron valores altos de conductividad eléctrica (CE), y la gallinaza, guano de murciélago y estiércol de vaca observaron los mayores valores de éste parámetro, relacionados de forma significativa con el contenido de nutrientes. En cuanto al pH los seis abonos se encontraron con valores dentro de los permitidos por las normas mexicanas. Los resultados permiten generar información del contenido de nutrientes de los seis abonos para realizar su adecuada aplicación por los productores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[SUMMARY: The indiscriminate use of fertilizers has contributed to soil salinity as well as to the depletion of soil mineral resources, causing farmers to depend on synthetic fertilizers. The objective of this study was to determine the content of plant-assimilable forms inorganic N, P, K in six organic fertilizers with potential use in organic agricultural production under principles of caring for the environment. Element determinations were performed with a HANNA spectrophotometer model HI83225-01. The fertilizer with the highest content of assimilable nitrogen was bat guano, followed by chicken manure and vermicompost Fertihum® In the case of phosphorus, the fertilizer that showed the highest amount was similarly bat guano followed by the chicken and cow manure. For the determination of potassium was bat guano that obtained the highest score along with the manure and vermicompost Fertihum®. The six organic fertilizers showed high values of electric conductivity (CE); chicken manure, bat guano and cow manure had the highest values. CE was significantly related to the nutrient content of organic fertilizers. The six organic fertilizers were within the values allowed by Mexican norms. The results generated in this study provide important information about the nutrient content of six organic fertilizers for their proper use.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contenido de nutrientes]]></kwd>
<kwd lng="es"><![CDATA[espectrofotómetro]]></kwd>
<kwd lng="es"><![CDATA[estiércoles]]></kwd>
<kwd lng="en"><![CDATA[nutrient content]]></kwd>
<kwd lng="en"><![CDATA[spectrophotometer]]></kwd>
<kwd lng="en"><![CDATA[manures]]></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[Cervera-Mata]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Navarro-Alarcón]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Delgado]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Pastoriza]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Montilla-Gómez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Llopis]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-González]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruf ián-Henares]]></surname>
<given-names><![CDATA[J. Á.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spent coffee grounds improve the nutritional value in elements of lettuce (Lactuca sativa L.) and are an ecological alternative to inorganic fertilizers]]></article-title>
<source><![CDATA[Food Chem.]]></source>
<year>2019</year>
<numero>282</numero>
<issue>282</issue>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Doan]]></surname>
<given-names><![CDATA[T. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Ngo]]></surname>
<given-names><![CDATA[P. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Rumpel]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Nguyene]]></surname>
<given-names><![CDATA[B. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Jouquet]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Interactions between compost, vermicompost and earthworms influence plant growth and yield: A one-year greenhouse experiment]]></article-title>
<source><![CDATA[Sci. Hortic.]]></source>
<year>2013</year>
<numero>160</numero>
<issue>160</issue>
<page-range>148-54</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grantina-Ievina]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ievinsh]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Treija]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Skujeniece]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Microbiological characteristics and effect on plants of the organic fertilizer from vermicompost and bat guano]]></source>
<year>2015</year>
<volume>1</volume>
<conf-name><![CDATA[ 21International Scientific Conference: &#8220;Research for Rural Development&#8221;]]></conf-name>
<conf-loc> </conf-loc>
<page-range>95-101</page-range><publisher-loc><![CDATA[Jelgava, Latvia ]]></publisher-loc>
<publisher-name><![CDATA[Latvia University of Agriculture]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gross]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Guy]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Posmanik]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Fine]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Nejidat]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A novel method for combined biowaste stabilization and production of nitrate-rich liquid fertilizer for use in organic horticulture]]></article-title>
<source><![CDATA[Water Air Soil Pollut.]]></source>
<year>2012</year>
<numero>223</numero>
<issue>223</issue>
<page-range>1205-14</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hadas]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rosenberg]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Guano as a nitrogen source for fertigation in organic farming]]></article-title>
<source><![CDATA[Fert. Res.]]></source>
<year>1992</year>
<numero>31</numero>
<issue>31</issue>
<page-range>209-14</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Herencia]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Maqueda]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of time and dose of organic fertilizers on soil fertility, nutrient content and yield of vegetables]]></article-title>
<source><![CDATA[J. Agric. Sci.]]></source>
<year>2016</year>
<numero>154</numero>
<issue>154</issue>
<page-range>1343-61</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Higson]]></surname>
<given-names><![CDATA[S. P. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Química Analítica]]></source>
<year>2007</year>
<publisher-loc><![CDATA[México ]]></publisher-loc>
<publisher-name><![CDATA[Mac Graw Hill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hill]]></surname>
<given-names><![CDATA[G. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Baldwin]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vermicomposting toilets, an alternative to latrine style microbial composting toilets, prove far superior in mass reduction, pathogen destruction, compost quality, and operational cost]]></article-title>
<source><![CDATA[Waste Manage.]]></source>
<year>2012</year>
<numero>32</numero>
<issue>32</issue>
<page-range>1811-20</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<collab>IFOAM (International Federation of Organic Agriculture)</collab>
<source><![CDATA[Los principios de la agricultura orgánica, preámbulo]]></source>
<year>2005</year>
<publisher-name><![CDATA[International Federation of Organic Agriculture]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kaviraj]]></surname>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Municipal solid waste management through vermicomposting employing exotic and local species of earthworms]]></article-title>
<source><![CDATA[Bioresour. Technol.]]></source>
<year>2003</year>
<numero>90</numero>
<issue>90</issue>
<page-range>169-73</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Manojlovi&#263;]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
<name>
<surname><![CDATA[&#268;abilovski]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bavec]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Organic materials: sources of nitrogen in the organic production of lettuce]]></article-title>
<source><![CDATA[Turk. J. Agric. For.]]></source>
<year>2010</year>
<numero>34</numero>
<issue>34</issue>
<page-range>163-72</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<collab>NMX-FF-109-SCFI-2007 (Norma Of icial Mexicana para Composta)</collab>
<source><![CDATA[Humus de lombriz (lombricomposta)- Especif icaciones y métodos de prueba]]></source>
<year>2008</year>
<publisher-loc><![CDATA[México, D. F. ]]></publisher-loc>
<publisher-name><![CDATA[Secretaria de Comercio y Fomento Industrial. Diario Of icial de la Federación]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<collab>NOM-021-RECNAT-2000 (Norma Of icial Mexicana)</collab>
<source><![CDATA[Que establece las especif icaciones de fertilidad, salinidad y clasif icación de suelos. Estudios, muestreo y análisis]]></source>
<year>2002</year>
<publisher-loc><![CDATA[México, D. F. ]]></publisher-loc>
<publisher-name><![CDATA[SEMARNAT]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olivares]]></surname>
<given-names><![CDATA[S. E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Programa estadístico]]></source>
<year>2012</year>
<publisher-loc><![CDATA[Escobedo, N.L., México ]]></publisher-loc>
<publisher-name><![CDATA[Facultad de Agronomía de la Universidad Autónoma de Nuevo León. México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Otero]]></surname>
<given-names><![CDATA[X. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Tejada]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Martín-Pastor]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Peña]]></surname>
<given-names><![CDATA[S. De La]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[T. O.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Alberti]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phosphorus in seagull colonies and the effect on the habitats. The case of yellow-legged gulls (Larus michahellis) in the Atlantic Islands National Park (Galicia-NW Spain)]]></article-title>
<source><![CDATA[Sci. Total Environ]]></source>
<year>2015</year>
<numero>532</numero>
<issue>532</issue>
<page-range>383-97</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peirce]]></surname>
<given-names><![CDATA[C. A. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Smernik]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
<name>
<surname><![CDATA[McBeath]]></surname>
<given-names><![CDATA[T. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phosphorus availability in chicken manure is lower with increased stockpiling period, despite a larger orthophosphate content]]></article-title>
<source><![CDATA[Plant Soil]]></source>
<year>2013</year>
<numero>373</numero>
<issue>373</issue>
<page-range>359-72</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pingali]]></surname>
<given-names><![CDATA[P. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Green revolution: Impacts, limits, and the path ahead]]></article-title>
<source><![CDATA[Proc. Natl. Acad. Sci.]]></source>
<year>2012</year>
<numero>109</numero>
<issue>109</issue>
<page-range>12302-8</page-range><publisher-loc><![CDATA[USA ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Roussos]]></surname>
<given-names><![CDATA[P. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gasparatos]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Kechrologou]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Katsenos]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Bouchagier]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of organic fertilization on soil properties, plant physiology and yield in two newly planted olive (Olea europaea L.) cultivars under Mediterranean conditions]]></article-title>
<source><![CDATA[Sci. Hortic.]]></source>
<year>2017</year>
<numero>220</numero>
<issue>220</issue>
<page-range>11-9</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Simón]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Peralta]]></surname>
<given-names><![CDATA[N. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[J. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Relación entre la conductividad eléctrica aparente con propiedades del suelo y nutrientes]]></article-title>
<source><![CDATA[Cienc Suelo (Argentina)]]></source>
<year>2013</year>
<numero>31</numero>
<issue>31</issue>
<page-range>45-55</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="">
<collab>SOAAN-IFOAM (Sustainable Organic Agriculture Action Network- Federation of Organic Agriculture Movements)</collab>
<source><![CDATA[Best practice guideline for agriculture and value chains. Public version 1.0]]></source>
<year>2013</year>
<publisher-loc><![CDATA[Bonn, Germany ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Soobhany]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Mohee]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Garg]]></surname>
<given-names><![CDATA[V. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Recovery of nutrient from Municipal Solid Waste by composting and vermicomposting using earthworm Eudrilus eugeniae]]></article-title>
<source><![CDATA[J. Environ. Chem. Eng.]]></source>
<year>2015</year>
<numero>3</numero>
<issue>3</issue>
<page-range>2931-42</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suthar]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bioremediation of aerobically treated distillery sludge mixed with cow dung by using an epigeic earthworm Eisenia fetida]]></article-title>
<source><![CDATA[Environmentalist]]></source>
<year>2008</year>
<numero>28</numero>
<issue>28</issue>
<page-range>76-84</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Szpak]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Longstaffe]]></surname>
<given-names><![CDATA[F. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Millaire]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[White]]></surname>
<given-names><![CDATA[C. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Stable Isotope Biogeochemistry of Seabird Guano Fertilization: Results from Growth Chamber Studies with Maize (Zea mays)]]></article-title>
<source><![CDATA[Plos ONE]]></source>
<year>2012</year>
<numero>7</numero>
<issue>7</issue>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Szpak]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Millaire]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[White]]></surname>
<given-names><![CDATA[C. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Longstaffe]]></surname>
<given-names><![CDATA[F. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of seabird guano and camelid dung fertilization on the nitrogen isotopic composition of f ield-grown maize (Zea mays)]]></article-title>
<source><![CDATA[J. Archaeol. Sci.]]></source>
<year>2012</year>
<numero>39</numero>
<issue>39</issue>
<page-range>3721-40</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tavakol]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Jákli]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Cakmak]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Dittert]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Karlovsky]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Pfohl]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Senbayram]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimized potassium nutrition improves plant-water-relations of barley under PEG-induced osmotic stress]]></article-title>
<source><![CDATA[Plant Soil]]></source>
<year>2018</year>
<numero>430</numero>
<issue>430</issue>
<page-range>23-35</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[What could promote farmers to replace chemical fertilizers with organic fertilizers?]]></article-title>
<source><![CDATA[J. Cleaner Product.]]></source>
<year>2018</year>
<numero>199</numero>
<issue>199</issue>
<page-range>882-90</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Westerman]]></surname>
<given-names><![CDATA[P. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Bicudo]]></surname>
<given-names><![CDATA[J. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Management considerations for organic waste use in agriculture]]></article-title>
<source><![CDATA[Bioresour. Technol.]]></source>
<year>2005</year>
<numero>96</numero>
<issue>96</issue>
<page-range>215-21</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Whitbread]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Blair]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Konboon]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Lefroy]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Naklang]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Managing crop residues, fertilizers and leaf litters to improve soil C, nutrient balances, and the grain yield of rice and wheat cropping systems in Thailand and Australia]]></article-title>
<source><![CDATA[Agric. Ecosyst. Environ.]]></source>
<year>2003</year>
<numero>100</numero>
<issue>100</issue>
<page-range>251-63</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yepes V.]]></surname>
<given-names><![CDATA[L. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Flórez R.]]></surname>
<given-names><![CDATA[V. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Analysis of the electric conductivity and pH behaviors in recycled drainage solution of rose cv. Charlotte plants grown in substrate]]></article-title>
<source><![CDATA[Agron. Colomb.]]></source>
<year>2013</year>
<numero>31</numero>
<issue>31</issue>
<page-range>352-61</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhong]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[Y. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Robinson]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Dickinson]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seabird guano and phosphorus fractionation in a rhizosphere with earthworms]]></article-title>
<source><![CDATA[Appl. Soil Ecol.]]></source>
<year>2017</year>
<numero>120</numero>
<issue>120</issue>
<page-range>197-205</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
