<?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>2415-0622</journal-id>
<journal-title><![CDATA[Economía Coyuntural]]></journal-title>
<abbrev-journal-title><![CDATA[Revista de coyuntura y perspectiva]]></abbrev-journal-title>
<issn>2415-0622</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Gabriel René MorenoFacultad de Ciencias Económicas, Administrativas y FinancierasInstituto de Investigaciones Económicas y Sociales José Ortiz Mercado  IIESJOM]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2415-06222022000200117</article-id>
<article-id pub-id-type="doi">1056274/ec.2022.v.7n2.5</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Transforming Sludge from a Waste into Product in Circular Economy of Bulgarian Agriculture]]></article-title>
<article-title xml:lang="es"><![CDATA[Transformación de lodo de desecho en producto en la economía circular de la agricultura búlgara]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ba&#1089;hev]]></surname>
<given-names><![CDATA[Hrabrin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ivanov]]></surname>
<given-names><![CDATA[Bozhidar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,aff1  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>7</volume>
<numero>2</numero>
<fpage>117</fpage>
<lpage>148</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S2415-06222022000200117&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S2415-06222022000200117&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S2415-06222022000200117&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: The issue of utilization of sludge from wastewater treatment in agriculture is an important socio-economic and environmental problem in the European Union and Bulgaria. It is becoming topical issue along with the growing interests into effective &#8220;transformation of wastes into products&#8221; and their inclusion in supply chains and circular economy. Despite their relevance, in-depth studies of the diverse effects and critical factors of sludge utilization in Bulgarian agri-food chain are at an early stage. The purpose of this article is to identify and assess the significance of the various factors influencing the effective utilization of sludge from wastewater treatment in Bulgarian agriculture. Based on a qualitative analysis of regulations and institutional structure, and surveys with managers and experts of urban wastewater treatment plants, and farmers using and not-using sludge, the institutional, political, organizational, personal, educational, informational, social, economic, and environmental factors influencing the utilization of sludge in agriculture in two regions of the country (Sofia and Burgas) are identified. Impact factors are generally divided into two types: factors influencing the behavior of agents, and factors determining the type and extent of the effects of sludge use in agriculture. Research of this type is to continue and deepen to establish the economic, sectoral and regional specificities on the basis of more representative information from all participants and interested parties in the effective utilization of sludge in the country.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La cuestión de la utilización de lodos de tratamiento de aguas residuales en la agricultura es un problema socioeconómico y ambiental importante en la Unión Europea y Bulgaria. Se está convirtiendo en un tema de actualidad junto con los crecientes intereses en la "transformación efectiva de desechos en productos" y su inclusión en las cadenas de suministro y la economía circular. A pesar de su relevancia, los estudios en profundidad de los diversos efectos y factores críticos de la utilización de lodos en la cadena agroalimentaria búlgara se encuentran en una etapa inicial. El propósito de este artículo es identificar y evaluar la importancia de los diversos factores que influyen en la utilización eficaz de los lodos del tratamiento de aguas residuales en la agricultura búlgara. Con base en un análisis cualitativo de la normatividad y estructura institucional, y encuestas a gerentes y expertos de plantas de tratamiento de aguas residuales urbanas, y agricultores usuarios y no usuarios de lodos, se analizan los aspectos institucionales, políticos, organizacionales, personales, educativos, informativos, sociales, económicos y se identifican los factores ambientales que influyen en la utilización de lodos en la agricultura en dos regiones del país (Sofía y Burgas). Los factores de impacto generalmente se dividen en dos tipos: factores que influyen en el comportamiento de los agentes y factores que determinan el tipo y el alcance de los efectos de uso de lodos en la agricultura. Se debe continuar y profundizar investigaciones de este tipo para establecer las especificidades económicas, sectoriales y regionales a partir de información más representativa de todos los participantes e interesados en el aprovechamiento efectivo de los lodos en el país.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[sludge]]></kwd>
<kwd lng="en"><![CDATA[use]]></kwd>
<kwd lng="en"><![CDATA[agriculture]]></kwd>
<kwd lng="en"><![CDATA[factors]]></kwd>
<kwd lng="en"><![CDATA[efficiency]]></kwd>
<kwd lng="en"><![CDATA[Bulgaria]]></kwd>
<kwd lng="es"><![CDATA[lodo]]></kwd>
<kwd lng="es"><![CDATA[uso]]></kwd>
<kwd lng="es"><![CDATA[agricultura]]></kwd>
<kwd lng="es"><![CDATA[factores]]></kwd>
<kwd lng="es"><![CDATA[eficiencia]]></kwd>
<kwd lng="es"><![CDATA[Bulgaria]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="">
<collab>ANSES</collab>
<source><![CDATA[Sewage sludge produced during the COVID-19 epidemic can only be applied to fields after disinfection, The French Agency for Food]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Governing of Agrarian Sustainability]]></article-title>
<source><![CDATA[ICFAI Journal of Environmental Law]]></source>
<year>2007</year>
<numero>6</numero>
<issue>6</issue>
<page-range>7-25</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mechanisms of governance of sustainble development]]></article-title>
<source><![CDATA[Journal of Applied Economic Sciences (JAES)]]></source>
<year>2009</year>
<volume>4</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>169-84</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<source><![CDATA[Water governance in Bulgarian agriculture, in Climate Change and its Effects on Water Resources]]></source>
<year>2011</year>
<page-range>215-24</page-range><publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Governing of Agro-Ecosystem Services in Bulgaria]]></article-title>
<source><![CDATA[Research Topics in Agricultural and Applied Economics]]></source>
<year>2012</year>
<numero>3</numero>
<issue>3</issue>
<page-range>94-129</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[NEW INSTITUTIONAL ECONOMICS FRAMEWORK FOR ASSESSING AND IMPROVING AGRARIAN ORGANIZATIONS]]></article-title>
<source><![CDATA[Bulletin of Taras Shevchenko National University of Kyiv Economics]]></source>
<year>2013</year>
<volume>8</volume>
<numero>150</numero>
<issue>150</issue>
<page-range>6-17</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<source><![CDATA[Environmental management in agriculture - Mechanisms, Forms and Efficiency]]></source>
<year>2014</year>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[An Approach to Assess Sustainability of Agricultural Farms]]></article-title>
<source><![CDATA[Turkish Economic Review]]></source>
<year>2015</year>
<volume>3</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>29-53</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Socio-economic and environmental sustainability of Bulgarian farms]]></article-title>
<source><![CDATA[Agricultural and resource economics: international scientific e-journal]]></source>
<year>2017</year>
<numero>29</numero>
<issue>29</issue>
<page-range>5-21</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Institutional environment and climate change impacts on sustainability of Bulgarian agriculture]]></article-title>
<source><![CDATA[Bulgarian Journal of Agricultural Science]]></source>
<year>2018</year>
<volume>24</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>523-53</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev H.]]></surname>
<given-names><![CDATA[D. Terziev]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A study on agrarian sustainability impact of governance modes in Bulgaria]]></article-title>
<source><![CDATA[Journal of Applied Economic Sciences]]></source>
<year>2018</year>
<volume>13</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>227-57</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bachev H.]]></surname>
<given-names><![CDATA[B.Ivanov]]></given-names>
</name>
<name>
<surname><![CDATA[A.Sarov]]></surname>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Unpacking Governance Sustainability of Bulgarian Agriculture]]></article-title>
<source><![CDATA[&#1048;&#1082;&#1086;&#1085;&#1086;&#1084;&#1080;&#1095;&#1077;&#1089;&#1082;&#1080; &#1080;&#1079;&#1089;&#1083;&#1077;&#1076;&#1074;&#1072;&#1085;&#1080;&#1103;]]></source>
<year>2020</year>
<numero>6</numero>
<issue>6</issue>
<page-range>106-37</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barbu]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Management and Environmental Protection]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Daniels]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Advances in Environmental Research]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ivanov]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Convergent analysis of waste water practices among EU countries]]></article-title>
<source><![CDATA[Bulgarian Journal of Agricultural Science]]></source>
<year>2021</year>
<volume>27</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>289-96</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="">
<collab>EC</collab>
<source><![CDATA[Environmental, economic and social impacts of the use of sewage sludge on land]]></source>
<year>2008</year>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ekane]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Barquet1]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Rosemarin]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<source><![CDATA[Resources and Risks: Perceptions on the Application of Sewage Sludge on Agricultural Land in Sweden, a Case Study]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="">
<collab>EU</collab>
<source><![CDATA[Roundtable discussion on sludge use]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="">
<collab>EurEau</collab>
<source><![CDATA[Wate water treatment -sludge management]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hudcová]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Vymazal]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Rozko&#353;ný]]></surname>
<given-names><![CDATA[Milo&#353;]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Present restrictions of sewage sludge application in agriculture within the European Union]]></article-title>
<source><![CDATA[Soil and Water Research]]></source>
<year>2019</year>
<volume>14</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>104-20</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Iticescu]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Georgescu]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Arseni]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Rosu]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Timofti]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Carp]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Cioca]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimal Solutions for the Use of Sewage Sludge on Agricultural Lands]]></article-title>
<source><![CDATA[Water]]></source>
<year>2021</year>
<numero>13</numero>
<issue>13</issue>
<page-range>585</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mykhailova]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Stoyanets]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Mykhailov]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Kharchenko]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Bachev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sustainable development of the Ukrainian agrarian sector: perspectives and challenges]]></article-title>
<source><![CDATA[Problems and Perspectives in Management]]></source>
<year>2018</year>
<volume>16</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>28-39</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rosiek]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Directions and Challenges in the Management of Municipal Sewage Sludge in Poland in the Context of the Circular Economy]]></article-title>
<source><![CDATA[Sustainability]]></source>
<year>2020</year>
<numero>12</numero>
<issue>12</issue>
<page-range>3686</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rosemarin]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Macura]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Carolus]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Barquet]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Ek]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Jarnberg]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Lorick]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Johannesdottir]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Pedersen]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Koskiaho]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Haddaway]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Okruszko]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Circular nutrient solutions for agriculture and wastewater - a review of technologies and practices]]></article-title>
<source><![CDATA[Current Opinion in Environmental Sustainability]]></source>
<year>2020</year>
<numero>45</numero>
<issue>45</issue>
<page-range>78-91</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Scozzari]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Mansouri]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<source><![CDATA[Water Security in the Mediterranean Region]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="">
<collab>The European Green Deal</collab>
<source><![CDATA[COMMUNICATION FROM THE COMMISSION TO THE EUROPEAN PARLIAMENT, THE EUROPEAN COUNCIL, THE COUNCIL, THE EUROPEAN ECONOMIC AND SOCIAL COMMITTEE AND THE COMMITTEE OF THE REGIONS]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tesfamariam]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Ogbazghi]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Annandale]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Gebrehiwot]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cost-Benefit Analysis of Municipal Sludge as a Low-Grade Nutrient Source: A Case Study from South Africa]]></article-title>
<source><![CDATA[Sustainability]]></source>
<year>2020</year>
<numero>12</numero>
<issue>12</issue>
<page-range>9950</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ta&#351;eli]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
</person-group>
<source><![CDATA[Comparative Life Cycle Assessment of Sewage Sludge (Biosolid) Management Options]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Usman]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Ghulam]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Umar]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Khalil]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Sewage Sludge: An Important Biological Resource for Sustainable Agriculture and Its Environmental Implications]]></article-title>
<source><![CDATA[American Journal of Plant Sciences]]></source>
<year>2012</year>
<numero>3</numero>
<issue>3</issue>
<page-range>1708-21</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1041;&#1072;&#1096;&#1077;&#1074;]]></surname>
<given-names><![CDATA[&#1061;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1050;&#1086;&#1090;&#1077;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1053;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1052;&#1083;&#1072;&#1076;&#1077;&#1085;&#1086;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1052;]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#1045;&#1092;&#1077;&#1082;&#1090;&#1080; &#1086;&#1090; &#1087;&#1088;&#1080;&#1083;&#1072;&#1075;&#1072;&#1085;&#1077; &#1085;&#1072; &#1077;&#1074;&#1088;&#1086;&#1087;&#1077;&#1081;&#1089;&#1082;&#1080; &#1087;&#1086;&#1083;&#1080;&#1090;&#1080;&#1082;&#1080; &#1074;&#1098;&#1088;&#1093;&#1091; &#1079;&#1077;&#1084;&#1077;&#1076;&#1077;&#1083;&#1089;&#1082;&#1080;&#1090;&#1077; &#1089;&#1090;&#1086;&#1087;&#1072;&#1085;&#1089;&#1090;&#1074;&#1072; &#1074; &#1056;.&#1041;&#1098;&#1083;&#1075;&#1072;&#1088;&#1080;&#1103;]]></article-title>
<source><![CDATA[&#1089;&#1087;. &#1048;&#1082;&#1086;&#1085;&#1086;&#1084;&#1080;&#1082;&#1072;-21]]></source>
<year>2014</year>
<volume>4</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>97-114</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1041;&#1072;&#1096;&#1077;&#1074;]]></surname>
<given-names><![CDATA[&#1061;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1048;&#1074;&#1072;&#1085;&#1086;&#1074;]]></surname>
<given-names><![CDATA[&#1041;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1052;&#1080;&#1090;&#1086;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1044;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1041;&#1086;&#1077;&#1074;&#1089;&#1082;&#1080;]]></surname>
<given-names><![CDATA[&#1048;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1052;&#1072;&#1088;&#1080;&#1085;&#1086;&#1074;]]></surname>
<given-names><![CDATA[&#1055;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1057;&#1072;&#1088;&#1086;&#1074;]]></surname>
<given-names><![CDATA[&#1040;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1062;&#1074;&#1103;&#1090;&#1082;&#1086;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1044;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1050;&#1086;&#1089;&#1090;&#1077;&#1085;&#1072;&#1088;&#1086;&#1074;]]></surname>
<given-names><![CDATA[&#1050;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1042;&#1072;&#1085;&#1077;&#1074;]]></surname>
<given-names><![CDATA[&#1044;]]></given-names>
</name>
</person-group>
<source><![CDATA[&#1052;&#1045;&#1061;&#1040;&#1053;&#1048;&#1047;&#1052;&#1048; &#1048; &#1060;&#1054;&#1056;&#1052;&#1048; &#1053;&#1040; &#1059;&#1055;&#1056;&#1040;&#1042;&#1051;&#1045;&#1053;&#1048;&#1045; &#1053;&#1040; &#1040;&#1043;&#1056;&#1054;&#1045;&#1050;&#1054;&#1057;&#1048;&#1057;&#1058;&#1045;&#1052;&#1053;&#1048;&#1058;&#1045; &#1059;&#1057;&#1051;&#1059;&#1043;&#1048; &#1042; &#1041;&#1066;&#1051;&#1043;&#1040;&#1056;&#1048;&#1071;, &#1048;&#1040;&#1048;]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="">
<collab>&#1048;&#1040;&#1048;</collab>
<source><![CDATA[&#1042;&#1098;&#1079;&#1084;&#1086;&#1078;&#1085;&#1086;&#1089;&#1090;&#1080; &#1086;&#1090; &#1086;&#1087;&#1086;&#1083;&#1079;&#1086;&#1090;&#1074;&#1086;&#1088;&#1103;&#1074;&#1072;&#1085;&#1077;&#1090;&#1086; &#1085;&#1072; &#1091;&#1090;&#1072;&#1081;&#1082;&#1080;, &#1087;&#1086;&#1083;&#1091;&#1095;&#1077;&#1085;&#1080; &#1087;&#1088;&#1080; &#1087;&#1088;&#1077;&#1095;&#1080;&#1089;&#1090;&#1074;&#1072;&#1085;&#1077; &#1085;&#1072; &#1086;&#1090;&#1087;&#1072;&#1076;&#1098;&#1095;&#1085;&#1080; &#1074;&#1086;&#1076;&#1080; &#1080; &#1077;&#1092;&#1077;&#1082;&#1090; &#1079;&#1072; &#1091;&#1089;&#1090;&#1086;&#1081;&#1095;&#1080;&#1074;&#1086; &#1079;&#1077;&#1084;&#1077;&#1076;&#1077;&#1083;&#1080;&#1077;, &#1086;&#1090;&#1095;&#1077;&#1090; &#1085;&#1072; &#1085;&#1072;&#1091;&#1095;&#1085;&#1086;-&#1087;&#1088;&#1080;&#1083;&#1086;&#1078;&#1077;&#1085; &#1087;&#1088;&#1086;&#1077;&#1082;&#1090;]]></source>
<year>2021</year>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1048;&#1074;&#1072;&#1085;&#1086;&#1074;]]></surname>
<given-names><![CDATA[&#1041;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1052;&#1072;&#1088;&#1080;&#1085;&#1086;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1057;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1041;&#1072;&#1096;&#1077;&#1074;]]></surname>
<given-names><![CDATA[&#1061;]]></given-names>
</name>
<name>
<surname><![CDATA[&#1043;&#1077;&#1086;&#1088;&#1075;&#1080;&#1077;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1042;]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#1048;&#1082;&#1086;&#1085;&#1086;&#1084;&#1080;&#1095;&#1077;&#1089;&#1082;&#1080; &#1080; &#1077;&#1082;&#1086;&#1083;&#1086;&#1075;&#1080;&#1095;&#1085;&#1080; &#1077;&#1092;&#1077;&#1082;&#1090;&#1080; &#1086;&#1090; &#1080;&#1079;&#1087;&#1086;&#1083;&#1079;&#1074;&#1072;&#1085;&#1077; &#1085;&#1072; &#1091;&#1090;&#1072;&#1081;&#1082;&#1080;&#1090;&#1077; &#1074; &#1079;&#1077;&#1084;&#1077;&#1076;&#1077;&#1083;&#1080;&#1077;&#1090;&#1086;]]></article-title>
<source><![CDATA[&#1045;&#1082;&#1086;&#1083;&#1086;&#1075;&#1080;&#1095;&#1085;&#1086; &#1080;&#1085;&#1078;&#1077;&#1085;&#1077;&#1088;&#1089;&#1090;&#1074;&#1086; &#1080; &#1086;&#1087;&#1072;&#1079;&#1074;&#1072;&#1085;&#1077; &#1085;&#1072; &#1086;&#1082;&#1086;&#1083;&#1085;&#1072;&#1090;&#1072; &#1089;&#1088;&#1077;&#1076;&#1072;]]></source>
<year>2020</year>
<numero>3</numero>
<issue>3</issue>
<page-range>44-53</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1052;&#1072;&#1088;&#1080;&#1085;&#1086;&#1074;&#1072;]]></surname>
<given-names><![CDATA[&#1057;]]></given-names>
</name>
</person-group>
<source><![CDATA[&#1059;&#1090;&#1072;&#1081;&#1082;&#1080; &#1086;&#1090; &#1087;&#1088;&#1077;&#1095;&#1080;&#1089;&#1090;&#1074;&#1072;&#1090;&#1077;&#1083;&#1085;&#1080; &#1089;&#1090;&#1072;&#1085;&#1094;&#1080;&#1080; &#1079;&#1072; &#1086;&#1090;&#1087;&#1072;&#1076;&#1098;&#1095;&#1085;&#1080; &#1074;&#1086;&#1076;&#1080; &#1080; &#1087;&#1088;&#1072;&#1074;&#1080;&#1083;&#1072; &#1079;&#1072; &#1090;&#1103;&#1093;&#1085;&#1086;&#1090;&#1086; &#1086;&#1087;&#1086;&#1083;&#1079;&#1086;&#1090;&#1074;&#1086;&#1088;&#1103;&#1074;&#1072;&#1085;&#1077;]]></source>
<year>2008</year>
</nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1057;&#1103;&#1088;&#1086;&#1074;]]></surname>
<given-names><![CDATA[&#1040;.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#1057;&#1086;&#1094;&#1080;&#1072;&#1083;&#1085;&#1086;-&#1080;&#1082;&#1086;&#1085;&#1086;&#1084;&#1080;&#1095;&#1077;&#1089;&#1082;&#1080;, &#1077;&#1082;&#1086;&#1083;&#1086;&#1075;&#1080;&#1095;&#1085;&#1080; &#1080; &#1091;&#1087;&#1088;&#1072;&#1074;&#1083;&#1077;&#1085;&#1095;&#1077;&#1089;&#1082;&#1080; &#1072;&#1089;&#1087;&#1077;&#1082;&#1090;&#1080; &#1087;&#1088;&#1080; &#1086;&#1087;&#1086;&#1083;&#1079;&#1086;&#1090;&#1074;&#1086;&#1088;&#1103;&#1074;&#1072;&#1085;&#1077;&#1090;&#1086; &#1085;&#1072; &#1091;&#1090;&#1072;&#1081;&#1082;&#1080; &#1074; &#1079;&#1077;&#1084;&#1077;&#1076;&#1077;&#1083;&#1080;&#1077;&#1090;&#1086;, &#1087;&#1086;&#1083;&#1091;&#1095;&#1077;&#1085;&#1080; &#1087;&#1088;&#1080; &#1087;&#1088;&#1077;&#1095;&#1080;&#1089;&#1090;&#1074;&#1072;&#1085;&#1077; &#1085;&#1072; &#1086;&#1090;&#1087;&#1072;&#1076;&#1098;&#1095;&#1085;&#1080; &#1074;&#1086;&#1076;&#1080;]]></article-title>
<source><![CDATA[&#1048;&#1082;&#1086;&#1085;&#1086;&#1084;&#1080;&#1082;&#1072; &#1080; &#1091;&#1087;&#1088;&#1072;&#1074;&#1083;&#1077;&#1085;&#1080;&#1077; &#1085;&#1072; &#1089;&#1077;&#1083;&#1089;&#1082;&#1086;&#1090;&#1086; &#1089;&#1090;&#1086;&#1087;&#1072;&#1085;&#1089;&#1090;&#1074;&#1086;]]></source>
<year>2020</year>
<numero>1</numero>
<issue>1</issue>
<page-range>58-69</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1044;&#1080;&#1088;&#1077;&#1082;&#1090;&#1080;&#1074;&#1072;]]></surname>
</name>
</person-group>
<source><![CDATA[&#1086;&#1087;&#1072;&#1079;&#1074;&#1072;&#1085;&#1077; &#1085;&#1072; &#1086;&#1082;&#1086;&#1083;&#1085;&#1072;&#1090;&#1072; &#1089;&#1088;&#1077;&#1076;&#1072; &#1080; &#1074; &#1095;&#1072;&#1089;&#1090;&#1085;&#1086;&#1089;&#1090; &#1085;&#1072; &#1087;&#1086;&#1095;&#1074;&#1080;&#1090;&#1077;, &#1074; &#1089;&#1083;&#1091;&#1095;&#1072;&#1080;&#1090;&#1077; &#1085;&#1072; &#1091;&#1087;&#1086;&#1090;&#1088;&#1077;&#1073;&#1072; &#1085;&#1072; &#1091;&#1090;&#1072;&#1081;&#1082;&#1080; &#1086;&#1090; &#1086;&#1090;&#1087;&#1072;&#1076;&#1098;&#1095;&#1085;&#1080; &#1074;&#1086;&#1076;&#1080; &#1074; &#1079;&#1077;&#1084;&#1077;&#1076;&#1077;&#1083;&#1080;&#1077;&#1090;&#1086;]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[&#1053;&#1072;&#1088;&#1077;&#1076;&#1073;&#1072;]]></surname>
<given-names><![CDATA[&#1079;&#1072;]]></given-names>
</name>
</person-group>
<source><![CDATA[&#1088;&#1077;&#1076;&#1072; &#1080; &#1085;&#1072;&#1095;&#1080;&#1085;&#1072; &#1079;&#1072; &#1086;&#1087;&#1086;&#1083;&#1079;&#1086;&#1090;&#1074;&#1086;&#1088;&#1103;&#1074;&#1072;&#1085;&#1077; &#1085;&#1072; &#1091;&#1090;&#1072;&#1081;&#1082;&#1080; &#1086;&#1090; &#1087;&#1088;&#1077;&#1095;&#1080;&#1089;&#1090;&#1074;&#1072;&#1085;&#1077;&#1090;&#1086; &#1085;&#1072; &#1086;&#1090;&#1087;&#1072;&#1076;&#1098;&#1095;&#1085;&#1080; &#1074;&#1086;&#1076;&#1080; &#1095;&#1088;&#1077;&#1079; &#1091;&#1087;&#1086;&#1090;&#1088;&#1077;&#1073;&#1072;&#1090;&#1072; &#1080;&#1084; &#1074; &#1079;&#1077;&#1084;&#1077;&#1076;&#1077;&#1083;&#1080;&#1077;&#1090;&#1086;]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="">
<collab>&#1053;&#1057;&#1055;&#1059;&#1059;</collab>
<source><![CDATA[&#1053;&#1072;&#1094;&#1080;&#1086;&#1085;&#1072;&#1083;&#1077;&#1085; &#1089;&#1090;&#1088;&#1072;&#1090;&#1077;&#1075;&#1080;&#1095;&#1077;&#1089;&#1082;&#1080; &#1087;&#1083;&#1072;&#1085; &#1079;&#1072; &#1091;&#1087;&#1088;&#1072;&#1074;&#1083;&#1077;&#1085;&#1080;&#1077; &#1085;&#1072; &#1091;&#1090;&#1072;&#1081;&#1082;&#1080; &#1086;&#1090; &#1087;&#1088;&#1077;&#1095;&#1080;&#1089;&#1090;&#1074;&#1072;&#1090;&#1077;&#1083;&#1085;&#1080;&#1090;&#1077; &#1089;&#1090;&#1072;&#1085;&#1094;&#1080;&#1080; &#1079;&#1072; &#1086;&#1090;&#1087; &#1098;&#1095;&#1085;&#1080; &#1074;&#1086;&#1076;&#1080; &#1074; &#1041;&#1098;&#1083;&#1075;&#1072;&#1088;&#1080;&#1103; &#1079;&#1072; &#1087;&#1077;&#1088;&#1080;&#1086;&#1076;&#1072;]]></source>
<year>2014</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
