Effects of leaf removal and intercropping on the incidence and severity of black Sigatoka disease at the establishment phase of plantains (Musa spp. AAB)

Emebiri, Livinus; Obiefuna, J. C.

doi:10.1016/0167-8809(92)90055-g

Cited by 13 publications

(7 citation statements)

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“…In the ratoon crop (experiment 2), a reduction in black Sigatoka disease severity was observed at 4 and 8 weeks after flower emergence. This agrees with the findings of other researchers who reported a reduction of 16% in incidence and 10% in severity of black Sigatoka (Emebiri and Obiefuna 1992). Those differences disappeared at 11 weeks more likely by the black Sigatoka inoculum pressure coming from the surrounding plants due to the small size of the plots.…”

Section: Discussionsupporting

confidence: 95%

“…Those leaves constituted the main inoculum source within the plantation (Cayo´n and Bolan˜os 1999). In False Horn plantain, pruning of the older leaves at regular intervals reduces the incidence and severity of black Sigatoka (Emebiri and Obiefuna 1992). Sua´rez and Ce´spedes (2005) found that on False Horn plantain, more black Sigatoka leaf infection was found on plants retaining more leaves.…”

Section: Introductionmentioning

confidence: 98%

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Effect of leaf pruning at flower emergence of banana plants (MusaAAA) on fruit yield and black Sigatoka (Mycosphaerella fijiensis) disease

Vargas¹,

Araya²,

Guzmán³

et al. 2009

International Journal of Pest Management

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Two experiments were conducted to evaluate the effect of banana (Musa AAA) leaf pruning intensities at flower emergence on fruit yield and black Sigatoka leaf infection. In both experiments a decreasing linear effect of leaf pruning intensities was observed on the number of functional and total leaves of the parental plant at harvest. Leaf pruning intensities did not affect bunch weight and fruit length in any experiment. As leaf pruning intensity increased there was a significant rectilinear increase in the flowering index in the first, second and third flowering ratoon crops. In the plant crop experiment black Sigatoka variables were not affected by leaf pruning. However, in the ratoon crops experiment, as leaf removal increased, black Sigatoka severity decreased at 4 and 8 weeks, and was similar at 11 weeks after flower emergence. The results support leaf pruning at flower emergence as a tool for inclusion in the integrated management of black Sigatoka severity, because there was either no reduction in bunch weight or any change in ratooning times.

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Section: Discussionsupporting

confidence: 95%

Section: Introductionmentioning

confidence: 98%

Effect of leaf pruning at flower emergence of banana plants (MusaAAA) on fruit yield and black Sigatoka (Mycosphaerella fijiensis) disease

Vargas¹,

Araya²,

Guzmán³

et al. 2009

International Journal of Pest Management

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show abstract

“…This is hard to explain. Emebiri and Obiefuna (1992) also noted that there was less BLSD on intercropped plantains. In this experiment, yields in the intercropped treatments were also higher (Norgrove and Hauser, 2002).…”

Section: Discussionmentioning

confidence: 90%

Black leaf streak disease and plantain fruit characteristics as affected by tree density and biomass management in a tropical agroforestry system

Norgrove

Häuser

2012

Agroforest Syst

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Black leaf streak disease (BLSD) affects both bananas and plantains. Anecdotal evidence suggests that when plantain is grown under shade in agroforestry systems, there is less damage from BLSD. In this study, BLSD severity and agronomic fruit characteristics of plantain were compared under high and low timber stand densities (TSD), and also under different crop management systems (mulching, burning, intercropping). By 11 months after planting, in high TSDs, plants had 1.2 more standing leaves, 1.5 more symptom-free leaves and a lower percentage of total leaf area attacked than in low TSDs. At harvest, plants in high TSDs had, on average, 1.4 more standing leaves than those in low TSDs. Percentage leaf area attacked by BLSD was 43.0 % in high TSD treatments, significantly lower than the 57.2 % in low TSD treatments. There was a significant and positive relationship between the number of leaves at flowering and dry fruit bunch mass for plantains grown under low TSD. However, there was no correlation between the number of leaves and fruit mass for the high TSD. The beneficial effects of shade in the high TSD, such as reduced severity of BLSD, were established. However, as there was bunch mass loss associated with reduced leaf production rates under the high TSD, a reduction in BLSD only partially compensated for this yield loss. Thus overall, at the high TSD, there was no yield gain from reduced BLSD.

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“…Removal of infected plant parts by pruning has been recommended for the control of fungal pathogens of perennial crops, for example, black Sigatoka disease during the establishment phase of plantains (Emebiri & Obiefuna, 1992), while pruning of infected plant parts and removal and destruction of plant debris form an integral part of the management of Botrytis in greenhouses (Hausbeck & Moorman, 1996). Field sanitation is also recommended for control of late blight in potatoes (Sherf & Macnab, 1986;Cohen, 1987).…”

Section: Sanitation 222mentioning

confidence: 99%

Managing Crop Disease through Cultural Practices

Walters¹

2009

Disease Control in Crops

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Effects of leaf removal and intercropping on the incidence and severity of black Sigatoka disease at the establishment phase of plantains (Musa spp. AAB)

Cited by 13 publications

References 1 publication

Effect of leaf pruning at flower emergence of banana plants (MusaAAA) on fruit yield and black Sigatoka (Mycosphaerella fijiensis) disease

Effect of leaf pruning at flower emergence of banana plants (MusaAAA) on fruit yield and black Sigatoka (Mycosphaerella fijiensis) disease

Black leaf streak disease and plantain fruit characteristics as affected by tree density and biomass management in a tropical agroforestry system

Managing Crop Disease through Cultural Practices

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