Genotypic variation for nitrogen use efficiency in Ethiopian barley

Sinebo, Woldeyesus; Gretzmacher, R.; Edelbauer, A.

doi:10.1016/s0378-4290(03)00135-7

Cited by 86 publications

(53 citation statements)

References 34 publications

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“…Under high N conditions, a 30% difference was observed in UtE between the most efficient cultivar Tukwa and the least efficient cultivar Manley. Similarly, Sinebo et al [5] reported substantial cultivar differences in UtE that ranged from 32 to 48 kg kg −1 N for a high (115 kg N ha −1 ) fertilizer treatment. Muurinen et al [17] also observed with the application of 90 kg N ha −1 under Nordic conditions, UtEs of 41 to 48 kg kg −1 N for two-rowed, and 42 to 53 kg kg −1 N for sixrowed barley cultivars.…”

Section: Discussionmentioning

confidence: 92%

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Nitrogen Fertilizer Rate and Cultivar Interaction Effects on Nitrogen Recovery, Utilization Efficiency, and Agronomic Performance of Spring Barley

Anbessa

Juskiw

2012

ISRN Agronomy

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A study was carried out at Lacombe, Alberta, to develop baseline information on nitrogen recovery, utilization efficiency, and agronomic performance of spring barley. This information may enable us to understand where the inefficiencies of N nutrition may lay and determine strategies to improve nitrogen use efficiency (NUE). Three divergent cultivars, "Manley" (two-rowed, tall, late maturing), "Noble" (six-rowed, mid-height, intermediate maturing), and "Tukwa" (six-rowed, semidwarf, early maturing), were grown under low (0 kg ha −1 ), moderate (50 kg ha −1 ) and high (100 kg ha −1 ) rates of applied N fertilization. Both N recovery and utilization efficiency decreased with the increase in rate of applied N fertilizer, and NUE declined from 45 kg kg −1 N under the low N treatment to 33 kg kg −1 N under the moderate treatment and 24 kg kg −1 N under the high N treatment. The test cultivars were comparable in N uptake, but Tukwa and Noble were more efficient in their utilization of the N taken up than Manley, particularly under high N. Subsequently, while grain yield of Tukwa and Noble had increased linearly with rate of N fertilizer, the grain yield of Manley showed a declining trend under high N. This implies that, where a high input condition is targeted, improvement in N utilization efficiency may need to be given due consideration.

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Section: Discussionmentioning

confidence: 92%

“…Nonetheless, studies have shown genetic differences in N recovery and utilization efficiencies of spring barley [5,6]. Barley cultivars are of different types that may affect their N uptake and utilization characteristics.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Fertilizer Rate and Cultivar Interaction Effects on Nitrogen Recovery, Utilization Efficiency, and Agronomic Performance of Spring Barley

Anbessa

Juskiw

2012

ISRN Agronomy

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“…Therefore, according to the findings of , a significant influence of the CULTAN system on the duration of winter wheat vegetation cannot be assumed. Sinebo et al (2004) recorded a positive correlation between barley grain yield and the nitrogen harvest index (NHI). The nitrogen harvest index was however significantly higher only with the CULTAN treatment compared to the conventional one in the application of 200 kg N.ha -1 when the CULTAN fertilization was applied at the beginning of tillering (BBCH 22).…”

Section: Discussionmentioning

confidence: 99%

Nitrogen uptake by winter wheat (Triticum aestivumL.) depending on fertilizer application

Sedlář

Balík

Cerny

et al. 2015

Cereal Research Communications

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The influence of the injection of nitrogen fertilizers with the CULTAN system (Controlled Uptake Long Term Ammonium Nutrition) on nitrogen uptake by winter wheat (Triticum aestivum L.) was observed at small-plot field experiments under conditions of the Czech Republic (central Europe) during 2007-2013. The CULTAN system consisting in the injection of all the nitrogen in one dose was compared with conventional broadcast surface fertilization which is carried out in three partial nitrogen doses. The total nitrogen dosage was 150 kg N.ha -1 . If the CULTAN fertilization was carried out at the beginning of tillering of winter wheat (BBCH 22) instead of at the end of tillering (BBCH 29), the CULTAN-treated winter wheat did not suffer from nitrogen deficiency at the BBCH 45 (boot stage) and BBCH 51 (beginning of heading) growth stages. Nitrogen utilization efficiency and biomass production efficiency were significantly higher with the CULTAN treatment compared to the conventional fertilization whereas nitrogen uptake efficiency tended toward lower values with the CULTAN treatment. Nitrogen use efficiency (NUE), post-heading nitrogen uptake, the contribution of nitrogen translocation to the total nitrogen in grain, the partial factor productivity of nitrogen as well as grain yield were not significantly influenced by the CULTAN system. Prolonged nitrogen uptake from the soil with the CULTAN treatment resulting in delayed plant senescence was not confirmed. Neither an application of sulphur-containing fertilizer nor the increased dosage of nitrogen (200 kg N.ha -1 ) positively affected the studied parameters.

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“…Thus the result of the current correlation analysis of fertilizer level with higher biomass yield and harvest index could result in higher grain yield of maize. In other similar studies, different authors also reported positive correlations among certain growth and yield parameters of maize (Loffer et al, 1985;Van Sanford and MacKown, 1986;Sinebo et al, 2004;Muurinen, 2007).…”

Section: Harvest Index (Hi)mentioning

confidence: 61%

Nitrogen and Phosphorus Fertilizers and Tillage Effects on Growth and Yield of Maize (Zea mays L.) at Dugda District in the Central Rift Valley of Ethiopia

Mohammed¹,

Shiferaw²,

Tades³

2015

Asian J. of Crop Science

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An experiment was conducted at Dugda district in the Central Rift Valley of Ethiopia under field conditions to determine the impacts of tillage levels, N and P fertilizers on growth and yield of maize (Zea mays L.). Two tillage levels; (1) Conventional and (2) Minimum tillage and four N and P fertilizer levels; (1) No fertilizer (control treatment), (2) 64 kg N haG ) were laid out in split plot design by assigning tillage levels to the main plots and fertilizers to the subplots and replicating three times. Data collected on growth and yield parameters was analyzed using the GLM procedure of SAS Version 9.2. N and P fertilizers had highly significant effects on growth parameters: plant height and leaf area. They also significantly affected yield parameters: biomass yield and grain yield of maize but the effects of tillage levels as well as the interaction between tillage levels and fertilizers were not significant. For the majority of the growth and yield parameters, the treatment with 64 kg N haG ). The results of the correlation analysis also indicated that biomass yield was significantly and positively correlated with grain yield and grain yield was also significantly and positively correlated with harvest index. This indicated that N and P fertilizer treatments with higher biomass yield and harvest index could result in higher grain yield of maize. According to the current results, it can be concluded that N and P fertilizers significantly affected the growth and yield of maize but tillage levels have no significant effect. Therefore, the use of 64 kg N haG 1 +20 kg P haG 1 (100 kg DAP haG 1 +100 kg urea haG 1 ) and minimum tillage could be recommended for optimum growth and yield of maize and also save the precious soil, money and time of resource poor small holder farmers, of the study area.

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Genotypic variation for nitrogen use efficiency in Ethiopian barley

Cited by 86 publications

References 34 publications

Nitrogen Fertilizer Rate and Cultivar Interaction Effects on Nitrogen Recovery, Utilization Efficiency, and Agronomic Performance of Spring Barley

Nitrogen Fertilizer Rate and Cultivar Interaction Effects on Nitrogen Recovery, Utilization Efficiency, and Agronomic Performance of Spring Barley

Nitrogen uptake by winter wheat (Triticum aestivumL.) depending on fertilizer application

Nitrogen and Phosphorus Fertilizers and Tillage Effects on Growth and Yield of Maize (Zea mays L.) at Dugda District in the Central Rift Valley of Ethiopia

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