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Effect of induced defoliation on plantain (Musa AAB Harton) productivity and the incidence of Black Sigatoka (Mycosphaerella fijiensis Morelet)

Guerere-Pereira, P ; Martinez, L ; Fuenmayor, L

Revista de la Facultad de Agronomía, 2008-10, Vol.25 (4), p.636-648 [Periódico revisado por pares]

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  • Título:
    Effect of induced defoliation on plantain (Musa AAB Harton) productivity and the incidence of Black Sigatoka (Mycosphaerella fijiensis Morelet)
  • Autor: Guerere-Pereira, P ; Martinez, L ; Fuenmayor, L
  • Assuntos: Musa ; Mycosphaerella fijiensis
  • É parte de: Revista de la Facultad de Agronomía, 2008-10, Vol.25 (4), p.636-648
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
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  • Descrição: In order to evaluate the induced defoliation on the plantain productivity, a study was carried out in Colon municipality, Zulia state. Sixteen first week flowering plants were selected. Treatments were carried out as follows: four were let on six leaves (T sub(1)), four with eight leaves (T sub(2)), four with ten leaves (T sub(3)) and four with twelve or more leaves (T sub(4): witness), for a total of four treatments with four plants like replicate by following a statistical model totally at random. The plants were harvested at twelve weeks and Black Sigatoka was diagnosed on base to Stover modified scale. Variables measured were: Bunch weight (PR), number of leaves at the moment of harvest (NH/P), number of fingers or fruits per bunch (ND/R), perceptual relationship between fruit weight/bunch weight (PD/PR), fruits morphological characteristics (weight (PF), length (LD) and diameter (DD)). Fruits were classified with base at these characteristics. Agreed with the results obtained, only had significant statistics difference (P<0,05) between T sub(1) and T sub(2) in relation to LD. Fruits classification showed that most of produced plantains, have optimal characteristics for national and international market. Healthy diagnostic showed in all plants that in leaves 1, 2 and 3, the injury was less than degree 2; in leaves 4 and 5, 25% of plants showed degree 4 and in leaves 6 and 7, 50% showed degree 4. In conclusion, induced defoliation, almost did not affect neither yield nor quality plants treated fruits.
  • Idioma: Espanhol
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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