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  <controlfield tag="003">BR-BrBNA</controlfield>
  <controlfield tag="005">20251221143359.0</controlfield>
  <controlfield tag="008">251221b2021    bl.|r|pooa||| 00| 0 eng |</controlfield>
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    <subfield code="b">eng</subfield>
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    <subfield code="a">F01</subfield>
    <subfield code="b">0710</subfield>
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    <subfield code="a">Stroka, Mar&#xED;lia Aparecida </subfield>
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    <subfield code="a">Ayub, Ricardo Antonio </subfield>
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    <subfield code="a">Silva, Daurimar Mendes da </subfield>
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    <subfield code="a">Pessenti, Isabela Let&#xED;cia </subfield>
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    <subfield code="a">Pereira, Andr&#xE9; Belmont </subfield>
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    <subfield code="a">Barbosa, Eduardo Augusto Agnellos </subfield>
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  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Effect of anti-hail nets with different colors  on &#x2018;Eva&#x2019; apple trees agronomical responses</subfield>
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Publica&#xE7;&#xE3;o online; 48 ref.; 3 tables; 2 illus.; Summaries (En, Pt)</subfield>
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Abstract -      The aim of the current research was to evaluate the impact of &#x2018;Eva&#x2019; apple tress cultivation under nets with different colors as opposed to cultivation deprived of net treatment on the attributes related to the vigor of the plant, production and fruit quality. The evaluations were carried out during the 2017/18 and 2018/19 crop growing seasons at commercial production fields located in the municipality of Porto Amazonas, PR. The treatments in study consisted of a control (plants grown with no protecting net), along with plants protected by anti-hail nets of distinct colors such as white, crystal (transparent) and black. The following response variables were assessed herein: length and diameter of the branch, plant height and branch diameter as plant vigor measurements, crop production (kg plant-1) and yield (kg ha-1), and number of fruits per plant as to productive yield of the cropping system, as well as shape (height and diameter) of the fruits, mass, Hue angle, firmness, soluble solids and titratable acidity to test grade or fruit quality. There was no significant effect of protecting nets on both vigor and development of the plants. However, production and yield were consistently more expressive under crystal and white protecting nets throughout the second crop growing season. This demonstrated that &#x2018;Eva&#x2019; apple trees were conducive to render as well as or even better than those plants bereft of protecting nets in view of the fact that the former treatments caused the plants to suffer less harmful impacts promoted by hail events, excess of wind, and sun burning disorders. The black anti-hail net resulted in negative outcomes as to coloration of the fruits in conjunction with titratable acidity, making them reddish and acidic and, therefore, less attractive for in natura commercial consumption.



Index Terms:      Fruit quality, plant growth, photo-selective net</subfield>
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  <datafield tag="520" ind1=" " ind2=" ">
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Resumo -       Este trabalho objetivou avaliar a interfer&#xEA;ncia do cultivo de macieiras &#x2018;Eva&#x2019; sob tela anti-granizo de diferentes cores, em compara&#xE7;&#xE3;o com o cultivo em pleno sol, sobre os atributos relativos ao vigor da planta, &#xE0; produ&#xE7;&#xE3;o e &#xE0; qualidade de frutos. As avalia&#xE7;&#xF5;es foram realizadas durante as safras de 2017/2018 e 2018/2019 em pomar comercial localizado no munic&#xED;pio de Porto Amazonas-PR, Brasil. Os tratamentos consistiram em um controle (plantas sem cobertura) e plantas cobertas com telas antigranizo, nas cores branca, cristal (transparente) e preta. As vari&#xE1;veis avaliadas foram as seguintes: comprimento e di&#xE2;metro de ramo, altura da planta e di&#xE2;metro de tronco, tomadas para medidas de vigor da planta, bem como produ&#xE7;&#xE3;o (kg planta-1), produtividade (kg ha-1) e n&#xFA;mero de frutos por planta, com vistas &#xE0; caracteriza&#xE7;&#xE3;o do rendimento biol&#xF3;gico da esp&#xE9;cie cultivada, e ainda forma (altura e di&#xE2;metro) dos frutos, massa, &#xE2;ngulo Hue, firmeza, s&#xF3;lidos sol&#xFA;veis e acidez titul&#xE1;vel, para atestar a qualidade da fruta. Constatou-se que n&#xE3;o ocorreram diferen&#xE7;a de vigor e desenvolvimento da planta sob telados, em compara&#xE7;&#xE3;o com o cultivo sem tela de prote&#xE7;&#xE3;o. No entanto, a produ&#xE7;&#xE3;o e a produtividade foram mais expressivas sob as telas cristal e branca, durante a segunda safra, demonstrando que a cultivar Eva pode produzir t&#xE3;o bem ou melhor que quando cultivada a c&#xE9;u aberto, mantendo-se as plantas mais protegidas de riscos clim&#xE1;ticos relativos, como granizo, vento excessivo e queimadura de sol. A tela protetora na cor preta proporcionou impactos negativos sobre a colora&#xE7;&#xE3;o de frutos e a acidez titul&#xE1;vel, tornando os frutos menos vermelhos e &#xE1;cidos e, portanto, menos atraentes para consumo in natura.



Termos para indexa&#xE7;&#xE3;o:       Qualidade da fruta, crescimento de planta, tela fotoseletiva</subfield>
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    <subfield code="a">MA&#xC7;&#xC3;</subfield>
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    <subfield code="a">CRESCIMENTO</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">PR&#xC1;TICA CULTURAL</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">PRODU&#xC7;&#xC3;O VEGETAL</subfield>
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    <subfield code="a">PARAN&#xC1;</subfield>
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  <datafield tag="773" ind1="0" ind2=" ">
    <subfield code="0">805</subfield>
    <subfield code="9">317052</subfield>
    <subfield code="d">Jaboticabal-SP Sociedade Brasileira de Fruticultura 1978</subfield>
    <subfield code="o">2024-3614</subfield>
    <subfield code="t">Revista Brasileira de Fruticultura (Brazil)</subfield>
    <subfield code="x">0100-2945</subfield>
    <subfield code="g">v. 43(3) p. 1-12; (2021)</subfield>
    <subfield code="w">BR2025004797</subfield>
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    <subfield code="u">https://www.scielo.br/j/rbf/a/kJMwTNMw7kRcfSrjWdX4xgh/?format=pdf&amp;lang=en</subfield>
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    <subfield code="c">339530</subfield>
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