TY - JOUR AU - Brauer, Rigléia Lima AU - Cruz, Raimundo Leite AU - Bôas, Roberto Lyra Villas AU - Pletsch, Talita Aparecida PY - 2011/05/29 Y2 - 2024/03/29 TI - AVALIAÇÃO DA UNIFORMIDADE DE APLICAÇÃO DE ÁGUA EM GOTEJADORES EM FUNÇÃO DO TEOR DE FERRO JF - IRRIGA JA - R_I VL - 16 IS - 1 SE - Artigos DO - 10.15809/irriga.2011v16n1p21 UR - https://irriga.fca.unesp.br/index.php/irriga/article/view/188 SP - 21-30 AB - <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-style: italic;">1 RESUMO</span></strong></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-style: italic;">&nbsp;</span></strong></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">Este trabalho teve por objetivo estudar a varia&ccedil;&atilde;o de vaz&atilde;o em tubogotejadores NaanPC laranja e NaanPC azul em fun&ccedil;&atilde;o <span style="mso-spacerun: yes;">&nbsp;</span>de precipitados qu&iacute;micos, ao longo do tempo de funcionamento, quando submetidos a uma &aacute;gua rica em ferro, avaliando-se especificamente o coeficiente de uniformidade de Christiansen (CUC) e o coeficiente de uniformidade de distribui&ccedil;&atilde;o (CUD). O experimento foi desenvolvido em uma bancada de ensaios para tubogotejadores no Laborat&oacute;rio <span style="layout-grid-mode: line;">de Ensaio de Equipamentos para Irriga&ccedil;&atilde;o do Departamento de Engenharia Rural da Faculdade de Ci&ecirc;ncias Agron&ocirc;micas - UNESP, localizado no munic&iacute;pio de Botucatu &ndash; SP. </span></span><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-weight: bold; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;">O experimento foi montado em esquema fatorial 2x2x7, sendo duas doses de Fe, dois modelos de gotejadores e sete tempos de funcionamento, com tr&ecirc;s repeti&ccedil;&otilde;es, totalizando 84 parcelas experimentais.</span><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-weight: bold;"> </span><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-weight: bold; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;">Efetuou-se a an&aacute;lise de vari&acirc;ncia pelo teste F. As m&eacute;dias das vaz&otilde;es dos gotejadores foram comparadas pelo teste de T de Student a 5% de probabilidade. </span><span style="font-size: 12pt; layout-grid-mode: line; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">Os resultados obtidos n&atilde;o apontaram diferen&ccedil;a significativa nas diferentes doses de ferro. Entretanto, os resultados apontaram diferen&ccedil;a significativa na intera&ccedil;&atilde;o gotejador x tempo e coeficiente de uniformidade de Christiansen (CUC).</span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span style="font-size: 12pt; layout-grid-mode: line; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;">&nbsp;</span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><strong><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;">UNITERMOS:</span></strong><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-weight: bold; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;"> coeficiente de uniformidade de Christiansen(CUC), coeficiente de uniformidade de distribui&ccedil;&atilde;o (CUD), entupimento de emissores.</span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-weight: bold; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;">&nbsp;</span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-bidi-font-weight: bold; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;">&nbsp;</span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><strong><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: PT-BR;">BRAUER, R.L; CRUZ, R. L; VILLAS B&Ocirc;AS, R. L.; PLETSCH, T. A.</span></strong></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><span class="longtext1"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">EVALUATION OFWATER APPLICATION UNIFORMITY IN DRIPPERSIN FUNCTION OF IRON CONTENT</span></strong></span><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US"><br style="mso-special-character: line-break;" /><br style="mso-special-character: line-break;" /></span></strong><strong><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: PT-BR;" lang="EN-US"></span></strong></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><strong><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: PT-BR;" lang="EN-US">&nbsp;</span></strong></p><p class="cv11" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; color: windowtext; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">2 ABSTRACT</span></strong></p><p class="cv11" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: center;" align="center"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; color: windowtext; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">&nbsp;</span></strong></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">This work aimed to study the occurrence of chemical precipitates effects in two types of drip hose (NaanPC orange and blue) due to chemical precipitation along the<span style="mso-spacerun: yes;">&nbsp; </span>operating time, when subjected to water rich in iron, specifically evaluating the </span></span><span class="longtext"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">Christiansen uniformity coefficient </span></span><a name="_GoBack"></a><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">(CUC) and distribution </span></span><span class="longtext"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">uniformity </span></span><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">(DU). The experiment was conducted in a test bench for<span style="mso-spacerun: yes;">&nbsp; </span>drip hose at Laboratory Test Equipment for Irrigation - Department of Agricultural Engineering, </span></span><span class="longtext"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">Sao Paulo State University.</span></span><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US"> The experiment was a 2 x 2 x 7 factorial design, with two Fe doses, two drip brands, and seven operational times with three replicates, totalizing 84 experimental plots. </span></span><span class="longtext1"><span style="font-size: 12pt; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">The variance analysis was performed by F test. Average e<span style="background: white;">mitter discharges were compared by Student t test at 5% probability. The results showed no significant difference in iron doses. However, the results indicated significant differences in drip versus operational time and the Christiansen </span></span></span><span class="longtext"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">uniformity coefficient </span></span><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">(CUC). </span></span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">&nbsp;</span></p><p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify;"><span class="longtext1"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">KEYWORDS:</span></strong></span><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US"> </span></span><span class="longtext"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">Uniformity coefficient of Christiansen</span></span><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">(CUC), distribution </span></span><span class="longtext"><span style="font-size: 12pt; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">uniformity </span></span><span class="longtext1"><span style="font-size: 12pt; background: white; color: black; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;; mso-ansi-language: EN-US;" lang="EN-US">(DU), emitter clogging.</span></span></p> ER -