دانشگاه علوم کشاورزی و منابع طبیعی گرگان

 آمار

تعداد نشریات14
تعداد شماره‌ها682
تعداد مقالات7,081
تعداد مشاهده مقاله11,000,611
تعداد دریافت فایل اصل مقاله10,074,813
Sheoran, P., Sardana, V., Singh, Sher, Kumar, A., Mann, A., Sharma, P.. (1394). Agronomic and physiological assessment of nitrogen use, uptake and acquisition in sunflower. , 10(2), 109-121. doi: 10.22069/ijpp.2016.2783
P. Sheoran; V. Sardana; Sher Singh; A. Kumar; A. Mann; P. Sharma. "Agronomic and physiological assessment of nitrogen use, uptake and acquisition in sunflower". , 10, 2, 1394, 109-121. doi: 10.22069/ijpp.2016.2783
Sheoran, P., Sardana, V., Singh, Sher, Kumar, A., Mann, A., Sharma, P.. (1394). 'Agronomic and physiological assessment of nitrogen use, uptake and acquisition in sunflower', , 10(2), pp. 109-121. doi: 10.22069/ijpp.2016.2783
Sheoran, P., Sardana, V., Singh, Sher, Kumar, A., Mann, A., Sharma, P.. Agronomic and physiological assessment of nitrogen use, uptake and acquisition in sunflower. , 1394; 10(2): 109-121. doi: 10.22069/ijpp.2016.2783

Agronomic and physiological assessment of nitrogen use, uptake and acquisition in sunflower

International Journal of Plant Production
مقاله 2، دوره 10، شماره 2، اردیبهشت 2016، صفحه 109-121    اصل مقاله (1.38 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22069/ijpp.2016.2783
نویسندگان
P. Sheoran* 1؛ V. Sardana2؛ Sher Singh3؛ A. Kumar4؛ A. Mann5؛ P. Sharma2
1ICAR-Central Soil Salinity Research Institute, Karnal, India.
2Punjab Agricultural University, Ludhiana, India.
3ICAR-Vivekanand Parvatiya Krishi Anusandhan Sansthan, Almora, India
4ICAR-Central Soil Salinity Research Institute, Karnal, India
5ICAR-Central Soil Salinity Research Institute, Karnal, India. b
چکیده
A field experiment was conducted to study the effects of N fertilization on uptake,
accumulation/remobilization, use efficiency and yield of sunflower grown in alluvial plains of
northwestern India comprising four hybrids (PSH 996, PAC 3789, PSH 569 and SH 3322)
and five N levels (Control, 40, 80, 100 and 120 kg N ha-1) in split-plot design with three
replications. Increased N fertilizer rates significantly prompted sunflower yield only up to 100
kg N ha-1. Every additional kilogram of N taken up increased sunflower yield by 26 kg ha-1.
Significant genetic variation for seed yield and NUE traits explicated PSH 569 as the efficient
one at sub-optimal N application while PSH 996 outperformed others at N80, N100 and N120. Dry
matter accumulation pattern revealed average harvest index of 30% with 29% of the biomass as
stalk, 19% as leaf and 22% as thalamus. Temporal changes in N acquisition indicated most of
the total N uptake upto 50% flowering while maximum remobilization takes place during
reproductive phase. Significant correlation between N uptake and N use efficiency parameters
with yield indicate the importance of N nutrition in sunflower; LAI (r=0.841 **), N uptake
(r=0.956**), NUpE (r= -0.814**), NUtE (r= -0.787**), NUE (r=-0.802**). Variation in NUE was
more closely associated with NUpE (r=0.996**) than NUtE (r=0.812**) and linearly decreased
with increasing leaf greenness (R2=0.70) and total leaf area (R2=0.81). This work will
complement other studies to establish a baseline for breeding N efficient sunflower genotypes
be grown under semi-arid tropical conditions in India and similar environments.

کلیدواژه‌ها
N uptake؛ Accumulation؛ Efficiency indices؛ Yield؛ Genotypes؛ Sunflower
آمار
تعداد مشاهده مقاله: 1,758
تعداد دریافت فایل اصل مقاله: 2,419


سامانه مدیریت نشریات علمی. طراحی و پیاده سازی از سیناوب