THE SALT TOLERANCE OF ALSTROEMERIA (ALSTROEMERIA, X)
Alstroemeria seemed to be a rather salt sensitive crop. The salinity threshold value for the salt content was below 0.8 dS/m. The yield decrease was 15% per dS/m. There was no difference in salt sensitivity between the two cultivars tested. The reduction in the flower weights was caused by a smaller number of peduncles and by a lower weight per peduncle. The number of flowers per peduncle was affected slightly. The crop did not show a specific sensitivity to sodium chloride.
Formulae are given for the conversion of the salinity threshold value and the salinity yield decrease value of the irrigation water into such values for soil extracts.
The results of tissue analyses showed that the sodium and chloride contents in particular were affected by the salt application. The effects of the salt application on the uptake of the various nutrient elements differed.