ORGANIC FERTILIZER AS PHOSPHORUS SUPPLIER FOR Brachiaria brizantha CV. MARANDÚ FERTILIZANTE ORGÂNICO COMO FONTE DE FÓSFORO NO CULTIVO INICIAL DE Brachiaria brizantha CV. MARANDÚ

&lt;!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --&gt; &lt;p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"&gt;&lt;span style="color: #000000;"&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: small;"&gt;Phosphorus is considered an essential element for plants, but it is found in low amounts in Brazilian soils, mainly in areas destined to pastures, and the application of organic matter contributes to the improvement of physical, chemical and biological soil attributes. The research had the objective of evaluating the application effects of the Bokashi organic compound on soil macro and micronutrients contents and leaves, as well as on &lt;em&gt;Brachiaria brizantha&lt;/em&gt; cv. Marandú dry mass yield, evaluating the potential of the organic fertilizer as phosphorus source, in comparison with conventional chemical fertilizers. Different organic compound doses supplied the soil with 17 kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;, 34 kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;, 68 kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;, 136 kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;, and 204 kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;, comparing it with the conventional chemical fertilizer and the control. The results revealed that the organic fertilizer Bokashi can adequately replace the conventional chemical fertilizer of &lt;em&gt;Brachiaria brizantha&lt;/em&gt; cv. Marandú, supplying the soil and plant with appropriate nutrients levels and maintaining the dry mass yield.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt; &lt;p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"&gt;&lt;span style="color: #000000;"&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: small;"&gt;&lt;span lang="en-US"&gt;KEY-WORDS: Organic matter; organic fertilizers; plants mineral nutrition; &lt;/span&gt;&lt;span lang="pt-PT"&gt;Bokashi&lt;/span&gt;&lt;span lang="en-US"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;<br>&lt;span style="font-size: 12pt; font-family: 'Times New Roman';"&gt;&lt;/span&gt; &lt;!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --&gt; &lt;p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"&gt;&lt;span style="color: #000000;"&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: small;"&gt;O fósforo é considerado elemento essencial para as plantas, mas é encontrado em baixas quantidades nos solos brasileiros&lt;span lang="pt-PT"&gt;, principalmente em áreas destinadas a pastagens, e a aplicação de matéria orgânica contribui para a melhoria dos atributos físicos, químicos e biológicos do solo. O trabalho teve por objetivo avaliar os efeitos da aplicação do composto orgânico Bokashi sobre os teores de macro e micronutrientes do solo e nas folhas, além da produção de massa seca da &lt;/span&gt;&lt;span lang="pt-PT"&gt;&lt;em&gt;Brachiaria brizantha&lt;/em&gt;&lt;/span&gt;&lt;span lang="pt-PT"&gt; cv. Marandú, avaliando o potencial do adubo orgânico como fonte de fósforo, em comparação à adubação química convencional. Foram aplicadas diferentes doses do composto orgânico, fornecendo ao solo 17 &lt;/span&gt;kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;&lt;span lang="pt-PT"&gt;, 34 &lt;/span&gt;kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;&lt;span lang="pt-PT"&gt;, 68 &lt;/span&gt;kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;&lt;span lang="pt-PT"&gt;, 136&lt;/span&gt; kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;&lt;span lang="pt-PT"&gt; e 204 &lt;/span&gt;kg P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; ha&lt;sup&gt;-1&lt;/sup&gt;, comparando-o com a adubação química convencional e o tratamento testemunha. Os resultados revelaram que o adubo orgânico Bokashi pode substituir, de forma viável, a adubação química convencional da &lt;em&gt;Brachiaria brizantha&lt;/em&gt; cv. Marandú, suprindo o solo e a planta com níveis adequados de nutrientes e mantendo a produção de massa seca.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt; &lt;p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"&gt;&lt;span style="color: #000000;"&gt;&lt;span style="font-family: Times New Roman,serif;"&gt;&lt;span style="font-size: small;"&gt;PALAVRAS-CHAVE: Matéria orgânica; adubação orgânica; nutrição mineral de plantas; &lt;span lang="pt-PT"&gt;Bokashi&lt;/span&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;