A field experiment was carried out at Bahteem Experimental Station during
199611997 and 199711998 season to study the response of six varieties ofT.
turgidum var. durum and Gemmeiza 3 (T. aestivum) to nitrogen levels for some
agronomic and quality characters,Six varieties of durum wheat (Bani Sweif 1,
Bani Sweif 2, Bani Sweif 3, Sohag 1, Sohag 2 and Sohag 3 as well as Gemmeiza 3
(T.aestivum). The varieties were fertilized by N treatment in the form of
Ammonium nItrate (33.5% N) as follows:
1. 75 kg NMed (Ti) were applied in three equal doses just before sowing,
first and second irrigations.
2. 75 kg Nlfed (12) were applied in four equal doses just before sowing,
first, second Irrigation and at heading date.
3. 100 kg Nlfed (T3) were applied in four equal doses just before sowing,
first, second irrigations and at heading date.
All studied characters except plant height, peduncle length and number of
kernelslspike were significantly differed from season to another. Gemmeiza 3
cultivar gave the highest averages of straw yieldlfeddan in both seasons. Bani
Swelf 2 cultivar had the highest grain yieldlfeddan in both seasons, whereas
both Gemmeiza 3 and Sohag I cultivars had the lowest grain yieldifeddan in the
first and second season, respectively. The highest average of the biological
yieldlfeddan recorded by Sohag 3 and Gemmeiza 3 cuthvars in the first and
second season, respectively. The highest average of straw yieidlfeddan was
obtained when applying N rate in four equal doses up to 75 kg Nlfeddan in the
first season and up to 100 kg Nlfeddan in the second season respectively. The
highest grain yield ardablfeddan was accompanied to N 4pplication level of 75 kg
Nlfeddan when N rate ws splitted into three doses in the first season and four
doses in the second season.
The effect of nitrogen levels on grain ardablfeddan, biological yields
(tonited) and yield components was changeable from season to season. The
effect of N rate up to 75 kg Nlfeddan in three doses with Gemmeiza 3 showed the
highest value for straw yield tonifeddan. The highest values for grain and
biological yield tonfleddan were obtained when N rate up to 75 kg Nlfeddan in
four doses were applied with 8ani Sweif I cultivar. Sohag 2 cultivar had the
highest semolina, protein and wet gluten percentages. Whereas, the highest dry
gluten percentage was recorded by Bani Sweif 3 cultivar. The application of N
levels In four equal doses up to 75 kg Nlfed and 100 kg Nlfed gave signifIcant
values of protein and dry gluten percentages, respectively. The highest mean
value of semolina percentage was detected by adding N rate In three doses up to
75 kg!feddan with Bani Swelf 2 cultivar. The highest dry gluten percentage was
obtained when applying N rate In four doses up to 75 kg Ns’fed with Sohag 2 and
Gemmeiza 3 cultivars. The highest wet gluten percentage was obtained by Sohag
I cultivar given N rate In four doses up to 75 kg Nlfeddan. Bani Swelf 3 cultIvar