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Incidência e gestão do mosaico grave da batata causado pelo PVY

Incidência e gestão do mosaico grave da batata causado pelo PVY

Palash Debnath / Ranima Mishra

84,03 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Botánica y ciencias de las plantas
ISBN:
9786209491863
84,03 €
IVA incluido
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A pesquisa foi realizada em cinco locais do distrito de Jorhat, em Assam, a saber: Alengmara, Fazenda Experimental da AAU, Kolbari, Teok e Titabar, para determinar a incidência do vírus Y da batata (PVY) através da sintomatologia e presença da população vetorial e da deteção do vírus por DAS-ELISA. A sintomatologia revelou vários graus de mosaico, manchas leves a graves, distorção das folhas, amarelecimento das folhas e redução do tamanho das folhas. Das 321 amostras de folhas testadas, 109 amostras foram consideradas positivas para o PVY, apresentando uma taxa de infecção de 33,95%, com a maior taxa de infecção na área de Kolbari (42,50%), que apresentou o maior valor médio de ELISA para todas as amostras positivas (0,286). Na experiência de campo para o manejo do vírus Y da batata através de uma abordagem integrada, ficou evidente que houve uma incidência consideravelmente baixa da doença com baixa população de vetores nos tratamentos de biofumigação com plantas de colza um mês antes do plantio (T4), seguido pela aplicação de óleo mineral a 5 ml/litro aos 15, 30, 45 e 60 dias após o transplante (T2). O maior rendimento (105,98 q/ha) foi registrado para o tratamento T4, com a maior porcentagem de redução da doença em relação ao controle e a menor população de vetores.

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