This investigation was carried out at the Rice Research and Training
Center, Sakha, Kafr - El-Sheikh Egypt during l993 and 1994 season to
study the effect of N levels and sowing dates on chemical and technological
properties of some rice cultivars. The results obtained were as follows:
Early sowing gave the highest significant effect on N-uptake in grain and
maximum protein yield /ha, whereas sowing rice at medium date produced
the maximum percentages of hulling, riilIing and head rice. On the other
hand, N-uptake in straw, crude protein and amylose content were
significantly increased by delaying sowing dates up to June, 15.
N-uptake in grain and in straw, protein %, protein yield /ha and head rice
percentage were significantly increased by increasing N levels up to 144 Kg
N/ha, whereas milling rice, amylose content and gel consistency were not
signيficantly affected. .
- Giza 176 cultivar surpassed significantly the other tested cultivars inN
uptake in grain and protein yield/ha. Giza 177 cultivar gave the highest
protein %, hulling %, milling % and head rice percentage, whereas no
• significant differences were obtained among rice cultivars in amylose
content and gel consistency. |
