Effect of leaf pruning at flower emergence of banana plants (<i>Musa</i>AAA) on fruit yield and black Sigatoka (<i>Mycosphaerella fijiensis</i>) disease

Vargas, Alfonso; Araya, Mario; Guzmán, M.; Murillo, G.

doi:10.1080/09670870802450219

Cited by 14 publications

(13 citation statements)

References 6 publications

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“…The growth of fruits of the last hand occurred with additional limitation of photoassimilates due to defoliation, resulting in shorter fruits, but with minimum diameter, as they reached the established harvest point. Vargas et al ( , 2009González et al (2012) reported that defoliation at flowering did not influence the mass of hands or the size of "Grande Naine' fruits under in tropical conditions, suggesting different effects in other varieties and climatic conditions.…”

Section: Resultsmentioning

confidence: 99%

Effect of Defoliation on the Yield and Quality of ‘Prata Comum’ Banana Fruits

et al. 2017

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-With the advent of black sigatoka in commercial banana crops in the "Vale do Ribeira" region, state of São Paulo, the monitoring the severity and chemical control of the disease in susceptible varieties have become more frequent in order to avoid leaf loss. This study simulated the effect of defoliation caused by the disease on the yield and quality of 'Prata Comum' banana fruits, depending on the formation period and fruit position in the bunch. The experimental design was completely randomized in a 2 x11 factorial scheme (period of bunch formation x number of leaves at flowering), 6-16 leaves at flowering in two periods of bunch formation with six replicates. In Period 1, flowering occurred at 04/15/13 and in Period 2 at 01/07/14, although in Period 1, bunch mass was higher and in Period 2, higher average maximum and minimum daily temperatures, precipitation and radiation were observed. Regardless of formation period, the number of leaves at flowering affected bunch mass, which ranged from 18 to 23 kg plant -1 . Defoliation affected the size of fruits of hand 1 and last hand of the bunch, but not the variability in fruit size due to the position the fruit occupies in the bunch and physicochemical characteristics. Index terms: Musa sp., Sigatoka negra, bunch mass, fruit size, source/sink ratio. EFEITO DA DESFOLHA NA PRODUÇÃO E NA QUALIDADE DOS FRUTOS DA BANANEIRA-'PRATA COMUM'RESUMO -Com o advento da Sigatoka-negra nos bananais comerciais do Vale do Ribeira-SP, o monitoramento da severidade e o controle químico da doença em variedades suscetíveis passaram a ser mais frequentes, a fim de evitar a perda de folhas. Dessa forma, foi realizada a simulação da desfolha causada pela doença, com o objetivo de avaliar seu efeito na produção e na qualidade dos frutos da bananeira-'Prata Comum' (AAB), em função do período de formação e da posição da penca no cacho. O delineamento experimental foi o inteiramente casualizado, em esquema fatorial 2x11 (dois períodos de formação do cacho x número de folhas na floração (6 a 16), com seis repetições. No Período 1, a floração ocorreu em 15-04-13 e no Período 2, em 07-01-14. Apesar de, no Período 1, a massa do cacho ter sido mais elevada, no Período 2 observou-se temperaturas médias diárias máximas e mínimas, precipitação e radiação mais elevadas. Independentemente do período de formação, o número de folhas na floração afetou a massa do cacho, que variou de 18 a 23 kg planta -1 . A desfolha afetou o tamanho dos frutos da penca 1 e a última penca do cacho, mas não a variação de tamanho dos frutos em função da posição eles mesmo ocupam no cacho e as características físico-químicas. Termos para indexação: Musa spp., Sigatoka negra, massa do cacho, tamanho do fruto, relação fonte/dreno. 1 (Paper 259-15).

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Section: Resultsmentioning

confidence: 99%

Effect of Defoliation on the Yield and Quality of ‘Prata Comum’ Banana Fruits

et al. 2017

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“…Thus, the accumulation of mass of the bunch with increasing number of leaves occurred concomitantly with the increase of the mass of the fruit of 4 th hand, which was the result of increased fruit size. In tropical conditions, the defoliation of banana 'Nanica' did not affect bunch mass and fruit size (VARGAS et al, 2009;GONZÁLEZ et al, 2012); however, in subtropical, there was a reduction in plants with less than 10 leaves (DANIELLS et al, 1994). Regardless of period, the bunch filling time increased with the number of leaves, but with a variation of only 15 days between plants with higher and lower number of leaves ( Figure 1F).…”

Section: Crop Protectionmentioning

confidence: 97%

“…At flowering, the number of leaves is maximum and then decline with the natural senescence. Previous studies indicated a need of 5 (CHILLET et al, 2012), 7 (RAMÍREZ et al, 2008, 7 to 9 (VARGAS et al, 2009), 9-10 (DANIELLS et al, 1994, 12 (GONZÁLEZ et al, 2012) leaves to filling banana bunch cv. 'Grande Naine', which variation may be related to climate conditions and cultural practices.…”

Section: Crop Protectionmentioning

confidence: 97%

Simulation of defoliation caused by Black Sigatoka in the yield and quality of banana 'Nanica ' fruits

et al. 2017

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“…Pruning of dead banana leaves (93.3% of respondents) and removal practices. The removal of dead leaves from the bananaplant has been promoted as one of the integrated management options for black sigatoka (Vargas et al, 2009;Engwali et al, 2013). It is also a common practice were farmers intercrop bananas with legumes (Ocimati et al, CABI book, in press).…”

Section: Awareness Of Agro-ecological Intensification In Banana Systemsmentioning

confidence: 99%

Farmers awareness and perceived benefits of agro-ecological intensification practices in banana systems in Uganda

Ochola¹,

Jogo²,

Ocimati³

et al. 2013

Afr. J. Biotechnol.

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Declining soil fertility and pests and diseases are major constraints to banana productivity in smallholder farming systems in Uganda. This study explored farmers' awareness and perceptions on agro-ecological intensification (AEI) practices for addressing these constraints in five banana-growing districts in Uganda. Stratified random sampling procedure was used to select 60 households for a survey from different agro-ecological zones and banana production systems. The household survey was complemented with focus group discussions to obtain qualitative data on farmer perceptions on benefits and constraints to AEI application on-farm. Thematic content analysis and descriptive statistics were used to analyze data. Results of the study show that most of the interviewed farmers were aware of the AEI practices although not all those aware had adopted the practices. Farmers were motivated to apply AEI practices perceived to offer multiple benefits: pest and disease management, enhanced productivity, soil fertility improvement and ecological adaptability. Major constraints to application of AEI practices by farmers include insufficient knowledge, labour intensiveness and limited access to markets. A transition towards intensification of smallholder banana systems requires that the full range of ecosystem services provided by AEI practices are recognized and valued by farmers. Therefore, empowering farmers with knowledge on their agro-ecological systems and locally adapting AEI practices is essential for realization of benefits and wider adoption of AEI practices.

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

Cited by 14 publications

References 6 publications

Effect of Defoliation on the Yield and Quality of ‘Prata Comum’ Banana Fruits

Effect of Defoliation on the Yield and Quality of ‘Prata Comum’ Banana Fruits

Simulation of defoliation caused by Black Sigatoka in the yield and quality of banana 'Nanica ' fruits

Farmers awareness and perceived benefits of agro-ecological intensification practices in banana systems in Uganda

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