Experimental work was done in Al-Wady El-Assiuty, Expt. Farm of Assiut
University, Assiut, Egypt during 2010/2011 and 2011/2012 seasons to investigate
the effect of boron concentration (zero, 50 and 100 ppm) and different application
time (35, 70 and 105 days after planting, DAP) on yield and quality traits of
sugar beet plant grown in newly reclaimed soil conditions. Randomized complete
block design (RCBD) using split-plot with three replications was used. The obtained
results revealed that:
-Yield and quality traits of sugar beet i.e., top and root fresh and dry
weights, sucrose %, sugar recovery % and K concentration in root were significantly
increased by high boron concentration compared with control in both seasons.
-Boron spraying time had a significantly positive effect on yield and quality
traits of sugar beet, however it's had any considerable effect on tops dry weight
(ton fed.-1), sugar loss %, sugar loss yield (ton fed.-1) and some impurities components
concentration in both seasons.
-There were significantly effects due to the interaction between concentration
and spray time of boron on yield and quality traits of sugar beet crop except
for sugar loss %, sugar loss yield (ton fed.-1), α-amino-N and Na concentration of
root in both seasons.
It could be concluded that the highest sugar yield and the best technological
quality of sugar beet were obtaining by using 100 ppm boron concentration and
spraying after 70 days after planting under newly reclaimed soil conditions