Enhancing Nitrogen Use Efficiency in Crop Plants

Fageria, N. K.; Baligar, V. C.

doi:10.1016/s0065-2113(05)88004-6

Cited by 1,075 publications

(775 citation statements)

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“…Despite the seasonal variation, Picaflor was found to be superior in growth and yield performance as compared to Mekelle I which might be associated with its better genetic yield potential and higher N uptake efficiency as compared to variety Mekelle I. Consistent with this result, Fageria and Baligar (2005) stated that higher N uptake is positively associated with higher grain yield of wheat and barley.…”

Section: Effect On Grain and Total Aboveground Biomass Yieldmentioning

confidence: 55%

“…The total N uptake by the whole plant was determined by summation of the respective grain and straw N uptakes on a hectare basis as described by Woldeyesus et al (2004). The different nitrogen utilization efficiencies were calculated from established formulae Fageria and Baligar (2005) and Fageria and Barbosa (2007) as below:…”

Section: Data Collection and Measurementsmentioning

confidence: 99%

“…Fageria and Baligar (2005) also reported that high agronomic efficiency is obtained if the yield increment per unit N applied is high because of reduced losses and increased Agronomic efficiency for cereals grown in the tropics from field studies has been reported to range from 10 to 30 kg grain produced per kg of applied N (Dobermann 2005). The values higher than 30 indicate efficiently managed systems.…”

Section: Agronomic Efficiency (Ae)mentioning

confidence: 99%

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Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Zemichael¹,

Dechassa

Abay

2017

Open Agriculture

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Open Agriculture. 2017; 2: 611-624 efficiency of 75% was obtained in response to the rate of 69 kg N ha -1 applied in three splits of 1/4 at planting, ½ at tillering, and 1/4 at anthesis. The equivalent values for the highest apparent recovery was 81% in the 2014 cropping season. The highest agronomic efficiency of 25 kg kg -1 and utilization efficiency of 55 kg kg -1 were recorded at the rate of 46 kg N ha -1 in three splits of 1/4 at planting, ½ at tillering and ¼ at anthesis. The equivalent values in 2014 were 34 kg kg -1 and 78 kg kg -1 , respectively. Grain protein concentration increased from 10.57% to 11.82% in 2013 and from 8.97% to 9.84% in 2014 cropping season as the rate increased from 23 kg N ha -1 to 69 kg N ha -1 . The acceptable marginal rate of return (1618%) and highest net benefit (34141ETB ha -1 ) was obtained from 69 kg N ha -1 for the variety Picaflor. In conclusion, applying 69 kg N ha -1 in three splits of ¼ at planting, 1/2 at tillering and ¼ at anthesis resulted in optimum grain yield, protein concentration and economic return of the crop.Keywords: agronomic nitrogen efficiency, grain yield, nitrogen recovery efficiency, nitrogen utilization efficiency, protein concentration IntroductionBread wheat (Triticum aestivum L.) is one of the most important cereal crops cultivated on about 1.6 million hectares of land with grain production of 3.5 million tons which make Ethiopia the second largest producer in Africa (CSA 2014). In the Tigray region of the country, bread wheat is a priority cereal crop for achieving food security and is cultivated on more than 100,175 hectares of land and has a total grain production of about 192,507 tons per annum (CSA 2014).Low soil fertility, especially nitrogen deficiency is one of the major constraints limiting wheat production in Abstract: Wheat is an important staple crop in arid and semi-arid areas of the Tigray region of Ethiopia. However, the yield and quality of the crop is markedly constrained by low soil fertility, inappropriate rate and timing of nitrogen application. Therefore, an experiment was conducted to elucidate the effect of different rates and timing of nitrogen fertilizer application on the yield, quality, and nitrogen use efficiency of bread wheat varieties during 2013 and 2014 main cropping seasons. The treatments consisted of four rates of nitrogen (23, 46, 69, and 92 kg N ha -1 ), three timing of N application (½ at sowing + ½ at tillering, ¼ at sowing + ½ at tillering + ¼ at anthesis, and 1/3 rd at sowing + 1/3 rd at tillering + 1/3 rd at anthesis) and two bread wheat varieties (Picaflor and Mekelle I) and 0 kg N ha -1 (control). The experiment was laid out as a randomized complete block design in a factorial arrangement with three replications. During both cropping years, increasing the rate of nitrogen application up to 69 kg N ha -1 significantly (P< 0.01) increased the total aboveground biomass and grain yields of the crop and decreased with further increase of applied N fertilizer. The highest aboveground biomass (6871 kg ha -...

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Section: Effect On Grain and Total Aboveground Biomass Yieldmentioning

confidence: 55%

Section: Data Collection and Measurementsmentioning

confidence: 99%

Section: Agronomic Efficiency (Ae)mentioning

confidence: 99%

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Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Zemichael¹,

Dechassa

Abay

2017

Open Agriculture

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“…The NUE was determined by the ratio between the difference of commercial fruit production with and without applying N and the amount of N applied to the crop (Fageria & Baligar, 2005), in an interval from 50 to 200 kg/ha.…”

Section: Methodsmentioning

confidence: 99%

Response of hybrid squash Tetsukabuto to water depths and doses of nitrogen

2017

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“…Several ecological functions (e.g. nutrient recycling, pest and disease control) are closely linked with the species diversity achieved from integrating protein crops with grains, forage and animal productions (Fageria and Baligar, 2005;Nemecek et al, 2008;Dumont et al, 2013). Several protein crops grown in Sweden (e.g.…”

Section: Introductionmentioning

confidence: 99%

Localising livestock protein feed production and the impact on land use and greenhouse gas emissions

Sasu-Boakye

Cederberg

Wirsenius

2014

Animal

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Livestock farmers in Sweden usually grow feed grains for livestock but import protein feed from outside Sweden. Aside from the economic implications, some environmental issues are associated with this practice. We used life cycle assessment to evaluate the impact of local protein feed production on land use and greenhouse gas emissions, compared with the use of imported protein feed, for pig meat and dairy milk produced in Sweden. Our results showed that local production reduced greenhouse gas emissions by 4.5% and 12%, respectively, for pigs and dairy cows. Land use for feed production in Sweden increased by 11% for pigs and 25% for dairy cows, but total land use decreased for pig production and increased for dairy milk production. Increased protein feed cultivation in Sweden decreased inputs needed for animal production and improved some ecological processes (e.g. nutrient recycling) of the farm systems. However, the differences in results between scenarios are relatively small and influenced to an extent by methodological choices such as co-product allocation. Moreover, it was difficult to assess the contribution of greenhouse emissions from land use change. The available accounting methods we applied did not adequately account for the potential land use changes and in some cases provided conflicting results. We conclude that local protein feed production presents an opportunity to reduce greenhouse gas emissions but at a cost of increasing land occupation in Sweden for feed production.

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Enhancing Nitrogen Use Efficiency in Crop Plants

Cited by 1,075 publications

References 443 publications

Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Response of hybrid squash Tetsukabuto to water depths and doses of nitrogen

Localising livestock protein feed production and the impact on land use and greenhouse gas emissions

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