Effects of different levels of source-sink ratio on yield and susceptibility to crown rot in Cavendish banana
2024
Gibert, Simon | Durant, Laurena | Daribo, Marie Odette | Sainte-Rose, Jérôme Laurent | Guillermet, Claire | De Lapeyre, Luc
Banana crown rot is caused by a parasitic complex of fungal origin, with symptoms most often appearing after harvest. The source-sink ratio has an impact on disease development that could be deleterious with a high Black Leaf Streak Disease pressure. The aim of this work was to assess the effects of hand removal as a lever to rebalance this ratio to control crown rot in a production context. The results confirmed a significant effect of hand number and functional leaf area on banana susceptibility to crown rot. A high source-sink ratio resulting from hand removal enabled the fruit to better resist disease with limited impact on yield.
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