Peach (Prunus persica Batsch) transplants cv. Dixired were sprayed three
times a season with three levels of urea (45% N) (2.5, 5.0 and 7.5 gm/ L), and
two levels of iron (10 and 20 mg Fe/ L) using chelated iron Fe-EDDHA
(6%iron), each alone or in
combination. Meanwhile the control transplants
sprayed with distilled water during 2006 and 2007 growing seasons, twenty
days intervals between each spray and another, the first spray is done at the
first week of May in both seasons. Results indicated that all spray treatments
with urea and iron each alone or with each other significantly increased leaves
N, K, Fe, chlorophyll and carbohydrate concentration, transplant leaves area,
shoots number, transplants height, main stem diameter and vegetative and root
dry weight. While leaves P concentration, significantly decreased with the foliar
spray with two concentrations of iron alone, or in combination with all
concentrations of urea. The best treatment was 7.5 gm urea/ L + 20 mg Fe/ L.,
which gave the highest means of all studied parameters, except leaves P
concentration, which were the highest mean of it was in the control treatment
at both seasons.
The research was carried out in Karahta Research Station for Shami goats
by using 84/head/Shami kids (122±18.65 days old and 18±3.77 kg body weight).
This trial continued for a 90 day period. Its goal was to find out the possibility
of reducing th
e offered concentrated feed in about 40% from the regular
requirements for growing and replacing it by improving the nutritive value of
the offered straw when they treated with urea, molasses or both of them.
The Animals divided randomly into six treatments according to the offered
feed for each treatment as the follows:
Untreated wheat straw (control), wheat straw treated with 20% molasses,
1% urea, 1% urea and 20% molasses, 2.5% and with 2.5% urea and 20%
molasses.
استخدم في التجربة ١٥ حملا ذكرًا من سلالة أغنام العواس، ُفطمت بعمر متوسطه ٦٥ يومًا، و بلغ
متوسط أوزانها ٢٥,٧ كغ. وزعت الحملان عشوائيًا في ثلاث مجموعات، و سمنت في ظروف إيواء
و رعاية متماثلة. أضيفت اليوريا إلى علائق المجموعات الأولى (الشاهد) و الثانية
و الثالثة بنسبة ٠%,
1%, ١,٥ % على التوالي. غذيت الحملان بصورة حرة لمدة ٩٠ يومًا ، و وزنت حملان كل مجموعة ،
أسبوعيًا و بشكل إفرادي، وفي نهاية التجربة ذبحت ثلاثة حملان من كل مجموعة اختيرت عشوائيًا.
