Correlations Between Asparagus Crop and the Year of Cropping, Day of Harvest, Sugar Contents in Storage Roots and Spears and Air Temperature

The study, carried out at the "Marcelin" Experimental Station in Poznan during harvest seasons 2000-2002, was focused on the determination of the correlation between daily yield of green asparagus (Asparagus officinalis L.) and soluble sugar contents in spears and storage roots, temperature, the year of cropping and day of harvest.

A positive correlation between daily yield and the year of harvest, daily fructose content in storage roots and spears, sucrose content in spears and temperature was documented, in contrast to the negative correlation with glucose and sucrose contents in roots, glucose content in spears and daily yield.