Abstract
We investigated the effects of the inorganic elemental composition of liquid fertilizers on the growth and yield of rockwool
cultivated ‘Masui Dauphine’ (synonym of ‘San Piero’), the major domestic fig variety. In a previous report (Takahashi
et al. 2022), we showed that liquid fertilizer with higher phosphorus and lower potassium, magnesium and manganese
contents, and higher concentration than control fertilizer, produced a higher fruiting node rate. Furthermore, the amount
of phosphorus in the leaves after harvest was positively correlated with the fruiting node rate, whereas the amount of iron
was negatively correlated.
In this study, we investigated (1) the effect of altering the liquid fertilizer composition and concentration on the
regeneration of bearing shoots (immediate effectiveness), and (2) the concentration dependence of the liquid fertilizer
effects. The results of (1) confirmed that changes in the composition and concentration of liquid fertilizer were immediately
reflected in fruiting node rates. The results of (2) showed that the fruiting node rate increased depending on the
concentration of the liquid fertilizer. However, the upper limit and optimum concentration have not been clearly defined.
https://ror.org/03pjf9v33 
