Irrigation
water is limiting factor for crop production in arid and semi-arid regions.
Modern irrigation system such as drip irrigation are widely used in Egypt and
also used in other countries especially have limited irrigation water
resources. Drip irrigation provides the
efficient use of limited water resources with increasing water productivity
(WP). Application of nitrogen to wheat is needed to ensure the N availability
throughout the growing season due to its important role in promoting both
vegetative and reproductive growth. A field experiment was carried out during
growing season of 2017/2018 at a private farm located at a newly reclaimed
sandy soil at El-Sadat district El-Menofiya governorate , Egypt to study the
effect of two nitrogen fertilizer types
(ordinary and slow release N fertilizers) as urea 46.5%N and urea formaldehyde (38%N) with four
application rates i.e., 0, 40, 60 and 100 kg N fed-1 (1 feddan=4200
m2) combined with drip irrigation moisture depletion from filed
capacity (FC) (I1=100% of FC) and (I2=50% of FC) on wheat crop. The results
showed that application of water
depletion at (I1) through drip irrigation along with 100 kg N fed-1,
from two sources of nitrogen recorded the highest yield of straw and grain and
the nitrogen content as well as nitrogen use efficiency compared with the other
rate and levels of nitrogen and irrigation, respectively. Also, water
productivity increased with irrigation I1 FC and nitrogen levels and reached
the highest values at 100 kg N fed-1 as fertigated urea compared
with urea formaldehyde as slow release fertilizer.
Wheat drip irrigation nitrogen fertilization urea formaldehyde Nitrogen use efficiency water productivity
Birincil Dil | İngilizce |
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Bölüm | Articles |
Yazarlar | |
Yayımlanma Tarihi | 1 Temmuz 2019 |
Yayımlandığı Sayı | Yıl 2019 Cilt: 8 Sayı: 3 |