One derivative (Param-A) of a water-soluble compound of 2-methyl-1,4-naphthoquinone has been commercially
launched to induce resistance against Panama disease in bananas, caused by Fusarium oxysporum f. sp. cubense.
This paper reports on a long-term experiment in order to verify the improvements that Param-A can provide in unfavourable
banana culture conditions, such as those of a plantation seriously affected by Panama disease and in a soil with deficient
drainage and high salinity. The results demonstrated that Param-A sprays decreased disease occurrence and delayed
symptom appearance significantly. Sprays of Param-A every 60 days shortened the time from plant flowering to fruit cutting,
and resulted in significantly higher yields.