scholarly journals INFLUENCE OF SEEDLING AGE AND NITROGEN FERTILIZER LEVELS ON GROWTH, GRAIN YIELD, N-UPTAKE AND N-USE EFFICIENCY OF HYBRID RICE VARIETIES.

2011 ◽  
Vol 2 (1) ◽  
pp. 67-80
Author(s):  
R. Gorgy ◽  
I. El-Refaee ◽  
M. Nassr
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Hybrid Rice ◽  
N Uptake ◽  
N Use Efficiency ◽  
Rice Varieties ◽  
Seedling Age ◽  
Use Efficiency ◽  
N Use

scholarly journals Pengaruh pemupukan N terhadap serapan dan efisiensi penggunaan N, serta hasil padi hibrida

Jurnal Agro ◽  
2022 ◽  
Vol 8 (2) ◽  
pp. 262-273
Author(s):  
Risqa Naila Khusna Syarifah ◽  
Zulfa Ulinuha ◽  
Purwanto Purwanto
Keyword(s):  
Hybrid Rice ◽  
Block Design ◽  
N Uptake ◽  
N Use Efficiency ◽  
Optimum Dose ◽  
Rice Varieties ◽  
Randomized Block Design ◽  
Use Efficiency ◽  
N Use

Pemupukan N pada padi hibrida menjadi krusial mengingat varietas padi hibrida sangat responsif, sehingga harus diketahui dosis yang tepat untuk menghasilkan produksi yang tinggi. Penelitian ini bertujuan untuk mengkaji pengaruh dosis N terhadap serapan N, efisiensi penggunaan N, dan hasil padi hibrida. Penelitian menggunakan Rancangan Acak Kelompok yang diulang tiga kali. Faktor pertama adalah varietas padi hibrida yang terdiri dari Varietas Mapan P05, Varietas SL-8 SHS Sterling, dan Varietas Intani 602. Faktor kedua adalah dosis pemupukan N yang terdiri dari kontrol tanpa pemupukan N, dosis N 100 kg ha-1, dan dosis N 200 kg ha-1. Terdapat respon yang beragam antar varietas padi hibrida terhadap taraf pemupukan N, Serapan N, efisiensi penggunaan N tertinggi yang dihasilkan oleh varietas Intani 602 masing-masing sebesar 138,57 %, dan 36,13%. Serapan N tanaman padi tertinggi dicapai pada dosis N 100 kg ha-1, dan efisiensi penggunaan N tertinggi pada dosis N 200 kg ha-1. Hasil gabah tertinggi dicapai pada varietas Mapan P05 sebesar 7,42 t ha-1, dan dosis pemupukan N 100 kg ha-1 memberikan hasil tertinggi sebesar 7,47 t ha-1. Implikasi dari penelitian ini bahwa dosis nitrogen 100 kg ha-1 dapat menjadi acuan sebagai dosis pemupukan N varietas padi hibrida di Indonesia. Hybrid rice is responsive to nitrogen, so it’s necessary to find the optimum dose to optimize the production. The  aim of this research was to examine the effect of nitrogen on N uptake, N use efficiency, and yield of hybrid rice. This study used a randomized block design with three replications. The first factor consisted of the  Mapan P05 variety, the SL-8 SHS Sterling variety, and Intani 602 variety. The second factor was Nitrogen dosage consisted of control, 100 kg ha-1, and 200 kg ha-1. There were various responses among hybrid rice varieties to the level of fertilization. The highest N uptake and N use efficiency was achieved in the Intani 602 variety at 138.57% and 36.13%, respectively. The highest N uptake was achieved at 100 kg ha-1 of N, and the highest N use efficiency was at 200 kg ha-1. The highest yield was achieved in the Mapan P05 variety (7.42 t ha-1), and the dose of N at 100 kg ha-1 gave the highest yield (7.47 t ha-1). The implication of this research is that the nitrogen dose of 100 kg ha-1 can be used as a reference for hybrid rice varieties fertilizer in Indonesia.

Variation in yield, N uptake and N use efficiency of medium and late duration rice varieties

2006 ◽  
Vol 144 (1) ◽  
pp. 69-83 ◽  
Author(s):  
DILLIP KUMAR SWAIN ◽  
BURLA CHANDRA BHASKAR ◽  
PRAMILA KRISHNAN ◽  
KURKURI SRINIVASA RAO ◽  
SANGRAM KESHARI NAYAK ◽  
...  
Keyword(s):  
Grain Yield ◽  
N Uptake ◽  
N Use Efficiency ◽  
Curvilinear Relationship ◽  
Grain Production ◽  
Rice Varieties ◽  
N Content ◽  
Use Efficiency ◽  
The Relationship ◽  
N Use

Field experiments were conducted at the village Kasiadihi, Dhenkanal district, Orissa, India during wet seasons 2001, 2002 and 2003 under non water-stressed conditions (0–25 cm standing water) to assess variability in N uptake and utilization by medium and late duration rice varieties. The N rates were 0, 40, 80 and 120 kg N/ha applied as urea in four equal splits at transplanting, active tiller initiation, panicle initiation and flowering stages. The grain yield response was up to 80 kg N/ha. The optimum grain yield attainable by the efficient medium duration varieties was 4·5 t/ha. The N efficient late duration varieties produced optimum grain yield of 5·8 t/ha. The relationship for total dry matter and grain yield production between N fertilized (40, 80 and 120 kg N/ha) and non-fertilized treatments were all significant, suggesting cultivar selection under optimum N fertilized conditions. The difference in optimum yield of the medium and late duration varieties was due to the differences in the amount of N uptake and its use efficiency by the plant for grain production. There was a curvilinear relationship between grain yield and N use efficiency for grain production. The relationship between N use efficiency for grain production and N contents of leaf, stem and grain at maturity was quadratic. The optimum plant N use efficiency of medium duration varieties was 49 kg grain/kg N uptake, achieved with leaf, stem and grain N contents of 10, 8 and 14 g/kg, respectively, at maturity. For late duration varieties, the optimum plant N use efficiency was 68 kg grain/kg N uptake and it was maintained with leaf and stem N content of 4·0 g/kg each and grain N content of 9·0 g/kg at maturity. The N content in plant organs could be the selection guide used to obtain efficient rice varieties.

scholarly journals Improvement of Root Characteristics Due to Nitrogen, Phosphorus, and Potassium Interactions Increases Rice (Oryza sativa L.) Yield and Nitrogen Use Efficiency

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 23
Author(s):  
Ming Du ◽  
Wenzhong Zhang ◽  
Jiping Gao ◽  
Meiqiu Liu ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Grain Yield ◽  
Root Length ◽  
N Uptake ◽  
N Use Efficiency ◽  
Root Characteristics ◽  
Nitrogen Use ◽  
Total N ◽  
Absorption Area ◽  
Use Efficiency ◽  
N Use

Although nitrogen (N), phosphorus (P), and potassium (K) co-application improves crop growth, yield, and N use efficiency (NUE) of rice, few studies have investigated the mechanisms underlying these interactions. To investigate root morphological and physiological characteristics and determine yield and nitrogen use parameters, rhizo-box experiments were performed on rice using six treatments (no fertilizer, PK, N, NK, NP, and NPK) and plants were harvested at maturity. The aboveground biomass at the elongating stage and grain yield at maturity for NPK treatment were higher than the sum of PK and N treatments. N, P, and K interactions enhanced grain yield due to an increase in agronomic N use efficiency (NAE). The co-application of N, P, and K improved N uptake and N recovery efficiency, exceeding the decreases in physiological and internal NUE and thereby improving NAE. Increases in root length and biomass, N uptake per unit root length/root biomass, root oxidation activity, total roots absorption area, and roots active absorption area at the elongating stage improved N uptake via N, P, and K interactions. The higher total N uptake from N, P, and K interactions was due to improved root characteristics, which enhanced the rice yield and NUE.

Effect of nitrogen rate and fertilizer nitrogen source on physiology, yield, grain quality, and nitrogen use efficiency in corn

2016 ◽  
Vol 96 (3) ◽  
pp. 392-403 ◽  
Author(s):  
Dilip K. Biswas ◽  
Bao-Luo Ma
Keyword(s):  
Grain Yield ◽  
Grain Quality ◽  
N Uptake ◽  
N Use Efficiency ◽  
Canopy Reflectance ◽  
Calcium Ammonium Nitrate ◽  
N Source ◽  
Use Efficiency ◽  
N Rates ◽  
N Use

A two-year (2010–2011) field experiment was undertaken to examine the effect of nitrogen (N) rate (0, 100, 150, and 200 kg N ha−1) and N source (urea, calcium ammonium nitrate; ammonium sulphate) on canopy reflectance, chlorophyll pigments, photosynthesis, yield, grain quality, and N-use efficiency in corn. However, the physiological observations were made only in 2011. We found that stover biomass was unaffected by higher N rate beyond 150 kg N ha−1 in both years. Higher N rates did not provide a yield advantage as compared to 150 kg N ha−1 in 2010, but the highest grain yield was produced with 200 kg N ha−1 in 2011. The higher grain yield by N application was attributed to a greater kernel size in both years. Corn stover [N] was found to increase with increasing N rates in both years. Kernel [N] only responded to the high N rate in 2010. There was no change in the kernel density as affected by N rate in both years. An increased N addition resulted in a decrease in both N-uptake efficiency and agronomic-N use efficiency in both years. There was an inconsistent effect of N source on yield and N use efficiency indices in the corn over two years.

scholarly journals Performance of Prilled Urea and Urea Super Granule by Applicators on Yield and Nitrogen Use Efficiency in Boro Rice

2019 ◽  
Vol 22 (2) ◽  
pp. 63-69
Author(s):  
ATMS Hossain ◽  
F Rahman ◽  
PK Saha
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
N Uptake ◽  
N Use Efficiency ◽  
Nitrogen Use ◽  
N Application ◽  
Deep Placement ◽  
Prilled Urea ◽  
Use Efficiency ◽  
N Use

A field experiment was conducted on validation of prilled urea (PU) and urea super granule (USG) applied by applicators on yield and nitrogen use efficiency during Boro 2014 season at Bangladesh Rice Research Institute (BRRI) farm, Gazipur (AEZ 28). Six treatment combinations of different N doses and methods of N application were tested to compare urea-N application by PU and USG applicator for rice yield, N uptake and N use efficiency over urea broadcasting. Application of N as PU or USG through applicator has same effect on grain yield, N uptake and N use efficiency compared with urea broadcasting. Statistically similar grain yield were observed with N application as PU or USG @ 78 kg N ha-1 by applicator which was comparable with urea broadcasting @ 135 kg N ha-1. The N concentration and uptake in both panicle initiation (PI) and maturity stage were higher in USG deep placement than PU deep placement by applicators but the difference was not significant. Although agronomic use efficiency (AUE) of N was slightly higher in PU than USG applied by applicators but the recovery efficiency (RE) of N was higher in USG than PU. Bangladesh Rice j. 2018, 22(2): 63-69

scholarly journals Influence of Nitrogen Fertilizer Application on Grain Yield, Nitrogen Uptake Efficiency, and Nitrogen Use Efficiency of Bread Wheat (Triticum aestivum L.) Cultivars in Eastern Ethiopia

2017 ◽  
Vol 9 (7) ◽  
pp. 202
Author(s):  
Nano Alemu Daba
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Nitrogen Uptake ◽  
N Uptake ◽  
N Use Efficiency ◽  
Wheat Cultivars ◽  
Eastern Ethiopia ◽  
Nitrogen Uptake Efficiency ◽  
Use Efficiency ◽  
N Use

The study was conducted in Eastern Ethiopia, namely Meta and Tullo districts, during the 2015 cropping season to determine the effect of N fertilizer levels on N uptake, N use efficiency (NUE) and grain yield on bread wheat cultivars. Factorial combinations of five N levels (0, 30, 60, 90, and 120 kg N ha-1) and four bread wheat cultivars (Danda’a, Digalu, Kakaba and local cultivar) were laid out as a randomized complete block design (RCBD) with three replications. The interactions of sites, N levels, and cultivars significantly (p ≤ 0.01) affected grain yield (GY), nitrogen uptake by grains, total nitrogen uptake, nitrogen uptake efficiency (NUpE) and nitrigen use efficiency for grain yield (NUEGY). Main effects of sites, N levels and cultivars had significant (p < 0.01) effect on grain and straw N contents, straw N uptake, N biomass production efficiency, N utilization efficiency (NUtE) and nitrogen harvest index (NHI). The cultivar Kakaba at rate of 90 kg N ha-1 produced the highest grain yield (4880 kg ha-1) in Tullo, which was statistically similar with the grain yield (4816 kg ha-1) obtained from the cultivar Digalu with 120 kg N ha-1 in Meta district. The NUEGY was higher with values of 24.2 and 24.1 kg grain kg-1 N in Tullo and Meta districts, respectively, for Digalu cultivar at 30 kg N ha-1 application rate than the remaining N levels and variety interactions at both sites. Cultivars variations in NUEGY under low N application levels were mainly due to higher variations in NUpE than in NUtE. Therefore, there is a need for exploration of the effectiveness of various combinations of N rates with time of applications for improvements of N-use efficiency traits and cost effectiveness in improved wheat cultivars production.

GRAIN YIELD AND NITROGEN UTILIZATION IN RESPONSE TO REDUCING NITROGEN RATE IN HYBRID RICE TRANSPLANTED AS SINGLE SEEDLINGS

2018 ◽  
Vol 55 (04) ◽  
pp. 637-648 ◽  
Author(s):  
MIN HUANG ◽  
SHUANGLÜ SHAN ◽  
XIAOBING XIE ◽  
XUEFENG ZHOU ◽  
YINGBIN ZOU ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Loss ◽  
Hybrid Rice ◽  
N Use Efficiency ◽  
Yield Reduction ◽  
Yield Attributes ◽  
N Utilization ◽  
Use Efficiency ◽  
N Rates ◽  
N Use

SUMMARYTransplanting single seedlings rather than seedlings in clumps has been increasingly attractive in hybrid rice production in China due to reduced seed requirements and higher grain yield. This study was conducted to determine grain yield and nitrogen (N) utilization in response to reductions in the N rate in hybrid rice under single-seedling transplanting. Field experiments were done in 2015 and 2016 on a moderate to high fertility soil at the Experimental Farm of Hunan Agricultural University, China. The hybrid rice cultivar Liangyoupeijiu (LYPJ) was used in 2015, and two hybrid cultivars LYPJ and Xiangliangyou 900 were used the next year. In each year, the rice plants transplanted with a single seedling per hill were grown with three N rates, including the usual N rate (150 kg ha–1) and two reduced N rates (120 and 90 kg ha–1). Grain yield, yield attributes, and N uptake and use efficiency were determined for each N rate. Significant reduction in grain yield was observed in only one of three cultivar-year combinations when N rate was reduced by 20% (from 150 to 120 kg ha–1), and the magnitude of yield reduction was only 4%. Although significant reduction in grain yield was observed in two of the three cultivar-year combinations when N rate reduced by 40% (to 90 kg ha–1), the highest yield reduction was only 7%. Yield attributes were generally changed slightly when N rate was reduced by 20%, while compensation among yield attributes and N utilization characteristics could explain why a 40% reduction in N rate did not result in substantial yield loss. Partial factor productivity of applied N (PFPN) was increased by 21–24% and 56–63% with 20% and 40% reductions in the N rate, respectively. The higher PFPN with a reduced N rate was attributed to higher recovery efficiency of applied N (REN) or to both higher REN and internal N use efficiency. Our study suggests that reducing N rate does not necessarily result in yield loss due to compensation among yield components and increased N use efficiency in hybrid rice transplanted as single seedlings under moderate to high soil fertility conditions.

scholarly journals Biochar Application in Combination with Inorganic Nitrogen Improves Maize Grain Yield, Nitrogen Uptake, and Use Efficiency in Temperate Soils

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1241
Author(s):  
Peter Omara ◽  
Lawrence Aula ◽  
Fikayo B. Oyebiyi ◽  
Elizabeth M. Eickhoff ◽  
Jonathan Carpenter ◽  
...  
Keyword(s):  
Grain Yield ◽  
Sandy Loam ◽  
Inorganic Nitrogen ◽  
Block Design ◽  
N Uptake ◽  
Significant Response ◽  
Silty Clay ◽  
Temperate Soils ◽  
Use Efficiency ◽  
N Use

Biochar (B) has shown promise in improving crop productivity. However, its interaction with inorganic nitrogen (N) in temperate soils is not well-studied. The objective of this paper was to compare the effect of fertilizer N-biochar-combinations (NBC) and N fertilizer (NF) on maize (Zea mays L.) grain yield, N uptake, and N use efficiency (NUE). Trials were conducted in 2018 and 2019 at Efaw and Lake Carl Blackwell (LCB) in Oklahoma, USA. A randomized complete block design with three replications and ten treatments consisting of 50, 100, and 150 kg N ha−1 and 5, 10, and 15 Mg B ha−1 was used. At LCB, yield, N uptake, and NUE under NBC increased by 25%, 28%, and 46%, respectively compared to NF. At Efaw, yield, N uptake, and NUE decreased under NBC by 5%, 7%, and 19%, respectively, compared to NF. Generally, results showed a significant response to NBC at ≥10 Mg B ha−1. While results were inconsistent across locations, the significant response to NBC was evident at LCB with sandy loam soil but not Efaw with silty clay loam. Biochar application with inorganic N could improve N use and the yield of maize cultivated on sandy soils with poor physical and chemical properties.

Integrated nutrient, water and other agronomic options to enhance rice grain yield and N use efficiency in double-season rice crop

2013 ◽  
Vol 148 ◽  
pp. 15-23 ◽  
Author(s):  
Jianquan Qin ◽  
S.M. Impa ◽  
Qiyuan Tang ◽  
Shenghai Yang ◽  
Jian Yang ◽  
...  
Keyword(s):  
Grain Yield ◽  
N Use Efficiency ◽  
Rice Crop ◽  
Rice Grain ◽  
Use Efficiency ◽  
N Use

Effects of fertigation scheme on N uptake and N use efficiency in cotton

2006 ◽  
Vol 290 (1-2) ◽  
pp. 115-126 ◽  
Author(s):  
Zhenan Hou ◽  
Pinfang Li ◽  
Baoguo Li ◽  
Jiang Gong ◽  
Yanna Wang
Keyword(s):  
N Uptake ◽  
N Use Efficiency ◽  
Use Efficiency ◽  
N Use
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