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Register a new userResponse of some barley varieties to seeding rates and nitrogen fertilizer levels under rain-fed conditions in south jordan
استجابة بعض أصناف الشعير لمعدلات البذار و مستويات السماد الآزوتي في ظروف الزراعة المطرية في جنوب الأردن
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نُفّذَ البحث خلال موسمي الزراعة 2009/10 و 2010/11م في حقول المركز الوطني للبحث و الإرشاد الزراعي التابع لوزارة الزراعة في محافظة الكرك جنوب الأردن لدراسة اِستجابة خمـسة أصـناف مـن الشعير هي مؤتة و اليرموك و اذرح و رم و أكساد 176 لتأثير أربعة معدلات مـن البـذار 50 ،100 ،150 و 200 كغ/هكتار و خمسة مستويات من السماد الآزوتي 0 ،15 ،30 ،45 و 60 كغ/هكتار في الإنتاجية من الحبوب و القش، و دليل الحصاد و بعض الخصائص الفينولوجية.
This research was carried out during both growing seasons 2009/10 - 2010/11 at the National Center for Agricultural Research and Extension (NCARE) / Karak Governorate / Jordan, to study the response of five barley varieties namely Mu'tah, Yarmok, Athroh, Rum and Acsad-176 to the effect of four seeding rates (50, 100, 150 and 200kg/ha) and five nitrogen fertilizer levels (0, 15, 30, 45 and 60kg/ha) on the productivity of grain and straw, the harvest index and some phenological indicators.
References used
Abdul Galil, A. A., M. A. Gomaa, H. G. M. Geweifel and Y. E. M. Atta. 1997. Response of yield and some grain quality criteria in wheat to nitrogen and phosphorus fertilization. Zagazig J. Agric. Res. 24(4):595-613
Beuerlein, J. E. and H. N. Lafever. 1989. Row spacing and seeding rate effects on soft red winter wheat yield, its components and agronomic characteristics. Applied Agric. Res. 4(2): 106 -110
Bole, J. B. and U. J. Pittman. 1980b. Spring soil water, precipitation and nitrogen fertilizer: Effect on barley grain protein content and nitrogen yield. Can. J. Soil. Sci. 60: 471-477
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The performance of some barley genotypes was evaluated under rain-fed
conditions in Dara'a (Izra'a) during two successive growing seasons (2009-2010/
2010-2011) in order to determine the most relevant physiological traits, which
are genetically as
sociated with drought tolerance and grain yield. The trial was
laid out according to the factorial complete randomized block design, with
three replicates. The leaf area index (LAI) was significantly lower in the wild
relatives compared with the varieties and land races. Relative water content
was significantly higher during the second growing season (87.19%) compared
with the first one (71.57%). Solute leakage was significantly lower during the
second growing season (69.50%) compared with the first growing season
(76.49%). It was noticed that the genotypes which have achieved significantly
higher grain yields, could also maintain significantly higher relative water
content in the leaves, (Acsad176, Acsad1182 and Acsad60), and were superior in
maintaining membrane integrity, and leaf area index, indicating the
importance of such traits in improving drought tolerance and maintaining
production capacity.
This cultivation was carried out in the farm of the Faculty of Agriculture at Damascus University during the 2013-2014 agricultural season to study the effect of seeding rate per unit area and planting dates on yield and its components for three barley genotypes under rain-fed conditions.
A field experiment was conducted at two environmentally different locations
(Damascus and Dara'a), to evaluate the performance of 16 barley genotypes
under rainfed conditions during the growing season of 2011-2012 in order to
study in the response
of some quantitative traits and determine the yield under
drought conditions. The experiment was laid out according to the factorial
complete randomized block design with three replicates for each genotype.
Significant genetic variation was found in the response of barley genotypes to
water stress. The performance of all genotypes was significantly superior in the
less dry region (Izra’a-Daraa) compared to the more dry one (Abo jarash-
Damascus) for all the examined parameters. Results revealed that the number
of grains per spike was significantly higher in most lines compared to Arabi
Abiad and Arabi Aswad, and the number of grains per spike was significantly
higher in the line29 (43.17 grain per spike). The number of grains per m2 was
significantly higher in line29,line64, Arabi Abiad and line14 (11177, 10809, 10802,
10744 grains per m2), respectively. The mean grain yield was significantly
higher in the line64, line14 and Arabi Abiad. (479.3, 476 and 443 gram per m-2),
respectively. Harvest index was significantly higher in all lines compared to
Arabi Abiad and Arabi Aswad.
The research was conducted at Abo-Jarash farm, faculty of
agriculture, Damascus university during the two growing season
2011-2012 and 2012-2013 in order to evaluate genetic variability of
some lentils genotypes based on some physiological and
productivity traits associated with drought tolerance. The
experiment was laid out according to factorial randomized complete
block design with three replications.
The research was carried out at Al-Qamishli Agricultural Research Center, GSAR,
Syira, during the seasons 2011, 2012 and 2013, in order to estimate the effect of
adding different levels of a crude Zeolite (T2-20 tons/ha, T3- 40 tons/ha, in addition
to the control (without adding Zeolite T1), on wheat productivity within a bilateral
crop rotation was followed, consisted of wheat and chickpea, and on the content of
nitrogen, phosphorus and potassium in the surface layer of the soil .The research
was conducted using Complete Randomized Block Design with three replicates.
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