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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">esoil</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень Почвенного института имени В.В. Докучаева</journal-title><trans-title-group xml:lang="en"><trans-title>Dokuchaev Soil Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0136-1694</issn><issn pub-type="epub">2312-4202</issn><publisher><publisher-name>V.V. Dokuchaev Soil Science Institute</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.19047/0136-1694-2021-108-104-136</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-665</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title></article-title><trans-title-group xml:lang="en"><trans-title>Soils in the Bulia micro watershed of Gorontalo province, Indonesia, and their quality assessment</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5725-5694</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Nurdin</surname></name><name name-style="western" xml:lang="en"><surname>Nurdin</surname><given-names>.</given-names></name></name-alternatives><bio xml:lang="en"><p>Department of Agrotechnology</p></bio><email xlink:type="simple">nurdin@ung.ac.id</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rayes</surname><given-names>M. L.</given-names></name><name name-style="western" xml:lang="en"><surname>Rayes</surname><given-names>Mochtar Lutfi</given-names></name></name-alternatives><bio xml:lang="en"><p>Soil Science</p></bio><email xlink:type="simple">lutfirayes2017@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Soemarno</surname></name><name name-style="western" xml:lang="en"><surname>Soemarno</surname><given-names>.</given-names></name></name-alternatives><bio xml:lang="en"><p>Soil Science</p></bio><email xlink:type="simple">smno@ub.ac.id</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Sudarto</surname></name><name name-style="western" xml:lang="en"><surname>Sudarto</surname><given-names>.</given-names></name></name-alternatives><bio xml:lang="en"><p>Soil Science</p></bio><email xlink:type="simple">sudarto_fpub@yahoo.co.id</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Listyarini</surname><given-names>E.</given-names></name><name name-style="western" xml:lang="en"><surname>Listyarini</surname><given-names>Endang</given-names></name></name-alternatives><bio xml:lang="en"><p>Soil Science</p></bio><email xlink:type="simple">Edl.fp2011@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Agustina</surname><given-names>C.</given-names></name><name name-style="western" xml:lang="en"><surname>Agustina</surname><given-names>Christanti</given-names></name></name-alternatives><bio xml:lang="en"><p>Soil Science</p></bio><email xlink:type="simple">christanti.ag@ub.ac</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rahman</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Rahman</surname><given-names>Rival</given-names></name></name-alternatives><bio xml:lang="en"><p>Agrotechnology</p></bio><email xlink:type="simple">rivalrahman.1307@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rauf</surname><given-names>A.</given-names></name><name name-style="western" xml:lang="en"><surname>Rauf</surname><given-names>Asda</given-names></name></name-alternatives><bio xml:lang="en"><p>Agribusiness</p></bio><email xlink:type="simple">asdarauf@ung.ac.id</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Husain</surname><given-names>J.</given-names></name><name name-style="western" xml:lang="en"><surname>Husain</surname><given-names>Jailani</given-names></name></name-alternatives><bio xml:lang="en"><p>Soil Science</p></bio><email xlink:type="simple">jailanihusain@yahoo.com.sg</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Gorontalo State University</institution><country>Индонезия</country></aff><aff xml:lang="en"><institution>Gorontalo State University</institution><country>Indonesia</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Brawijaya University</institution><country>Индонезия</country></aff><aff xml:lang="en"><institution>Brawijaya University</institution><country>Indonesia</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Sam Ratulangi University</institution><country>Индонезия</country></aff><aff xml:lang="en"><institution>Sam Ratulangi University</institution><country>Indonesia</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>25</day><month>09</month><year>2021</year></pub-date><volume>0</volume><issue>108</issue><fpage>104</fpage><lpage>136</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nurdin .., Rayes M.L., Soemarno .., Sudarto .., Listyarini E., Agustina C., Rahman R., Rauf A., Husain J., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Nurdin .., Rayes M.L., Soemarno .., Sudarto .., Listyarini E., Agustina C., Rahman R., Rauf A., Husain J.</copyright-holder><copyright-holder xml:lang="en">Nurdin .., Rayes M.L., Soemarno .., Sudarto .., Listyarini E., Agustina C., Rahman R., Rauf A., Husain J.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://bulletin.esoil.ru/jour/article/view/665">https://bulletin.esoil.ru/jour/article/view/665</self-uri><trans-abstract xml:lang="en"><p>Ten representative pedons from the Bulia micro watershed of Gorontalo Province, Indonesia, were characterized and classified to determine its land quality (LQ) class. Angular blocky, sticky, plastic consistencies and a hard consistency prevailed in the soil structure. In the alluvial plains the soil texture is dominated by the clay fraction, while in the hills and volcanic mountains the sand fraction is dominated. The soils in the Bulia micro watershed also have acid to neutral reaction, with the range of very low to high OC (organic carbon) levels, the reserve of exchangeable bases was dominated by Ca2+ in two series patterns, namely: Ca2+ &gt; Mg+ &gt; Na+ &gt; K+ and Ca2+ &gt; Na+ &gt; Mg+ &gt; K+, cation exchange capacity (CEC) ranged from low to very high, and the base saturation varied from moderate to very high. The alluvial plain is represented by Inceptisol in P1 and Typic Humustepts (P7), also by Oxic Humustepts (P3), then Mollisol on P4 (Typic Argiudolls) and Typic Haplustolls (P6), Alfisol on P5 (Typic Paleustalfs). Entisol on P2 (Typic Ustipsamments) was found in volcanic mountains and P9 (Typic Paleustolls) P8 (Ultic Paleustalfs), P10 (Inceptic Haplustalfs) are typical of volcanic hills. On the alluvial plains the land was categorized as the LQ class II, III and IV, the volcanic mountains were the LQ class IV, while the land on the volcanic hills was categorized as the LQ class VI. River bank erosion on the land river terraces can be held by the manufacture of gabions, talud, cliff reinforcement plants and terraces. The soil temperatures and high clay content can be regulated by mulching and organic materials.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Characterization</kwd><kwd>classification</kwd><kwd>soils of Indonesia</kwd><kwd>land quality</kwd><kwd>the Bulia watershed</kwd></kwd-group><funding-group><funding-statement xml:lang="en">Faculty of Agriculture, Brawijaya University</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Afandi F.N., Siswanto B., Nuraini Y., Effect of giving various types of organic material on soil chemical properties on the growth and production of sweet potato plants in Entisol Ngrangkah Pawon, Kediri, Soil and Land Resources, 2015, Vol. 2(2), pp. 237–244, URL: http://jtsl.ub.ac.id.</mixed-citation><mixed-citation xml:lang="en">Afandi F.N., Siswanto B., Nuraini Y., Effect of giving various types of organic material on soil 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