The use of a one or more flavonoid compound Signals which may be with anagriculturally acceptable carrier, applied prior to planting, up to 365 daysor more,either directly to the seed or transplant of a non-legume crop or a legumecrop, orapplied to the soil that will be planted either to a non-legume crop or alegume crop,for the purpose of increasing yield and/or improving seed germination and/orimproving earlier seed emergence and/or improving nodulation and/or increasingcrop stand density and/or improving plant vigour and/or improving plantgrowth,and/or increasing biomass, and/or earlier fruiting, all including incircumstances ofseedling and plant transplanting.
