Nitrogen use efficiency in modern wheat cultivars

Todeschini, Matheus Henrique; Milioli, Anderson Simionato; Trevizan, Diego Maciel; Bornhofen, Elesandro; Finatto, Taciane; Storck, Lindolfo; Benin, Giovani

doi:10.1590/1678-4499.385

Cited by 25 publications

(35 citation statements)

References 30 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nitrogen is one of the nutrients most required by the wheat crop and is mostly not supplied in ideal quantity and period to guarantee high yield and good quality of the final product (Todeschini et al, 2016). The definition of the N dose in wheat depends on organic matter content in the soil, previous crop and expected yield (Siqueira Neto et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…The use of leguminous species as source of residual N in cereals such as wheat and oat has also favored crop yield with reduction in the use of N-fertilizer (Pinnow et al, 2013;. Although the greater absorption of N-fertilizer in the vegetative period promotes significant increments in biomass production, the use efficiency is defined by the capacity of transformation into biomass and grains, conditioning the expression of the harvest index (Viana & Kiehl, 2010;Todeschini et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Single and split nitrogen dose in wheat yield indicators

Costa

Mantai

Silva

et al. 2018

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

A B S T R A C TSingle or split nitrogen (N) supply can maximize the expression of wheat yield indicators. The objective of the study was to evaluate the greater N use efficiency on wheat yield indicators by the single and split N supply under favorable and unfavorable year conditions to the crop in succession system of high and reduced residual N release. The study was conducted in 2014 and 2015, in a randomized complete block design with four replicates in a 4 x 3 factorial, for N-fertilizer doses (0, 30, 60, 120 kg ha -1 ) and supply forms [full dose (100%) in the phenological stage V 3 (third expanded leaf); split dose (70 and 30%) in the phenological stages V 3 /V 6 (third and sixth expanded leaves, respectively) and; split dose (70 and 30%) in the phenological stages V 3 /R 1 (third expanded leaf and early grain filling)], respectively, in soybean/wheat and maize/wheat cultivation systems. The highest N use efficiency for wheat yield was obtained with the single dose supply in favorable year of temperature and rainfall and with the split dose in the V 3 /V 6 stages in unfavorable year, regardless of the succession system of high and reduced residual N release.Dose única e fracionada do nitrogênio nos indicadores de produtividade do trigo R E S U M O O fornecimento único ou fracionado do nitrogênio pode maximizar a expressão dos indicadores de produtividade do trigo. Objetivou-se no estudo avaliar a maior eficiência de uso do nitrogênio sobre os indicadores de produtividade do trigo pelo fornecimento único e fracionado do nutriente em condição de ano favorável e desfavorável ao cultivo, em sistema de sucessão de alta e reduzida liberação de N-residual. O estudo foi conduzido em 2014 e 2015, em delineamento experimental de blocos casualizados com quatro repetições em fatorial 4 x 3, para doses de N-fertilizante (0, 30, 60, 120 kg ha -1 ) e formas de fornecimento [dose única (100%) no estádio fenológico V 3 (terceira folha expandida); fracionada (70 e 30%) no estádio fenológico V 3 /V 6 (terceira e sexta folha expandida) e; fracionada (70 e 30%) no estádio fenológico V 3 /R 1 (terceira folha expandida e início do enchimento de grãos)], respectivamente, no sistema de sucessão soja/trigo e milho/trigo. A maior eficiência do nitrogênio à produtividade do trigo é obtida no fornecimento em dose única em ano favorável de cultivo e com o fracionamento no estádio V 3 /V 6 em ano desfavorável, independente do sistema de sucessão de alta e reduzida liberação de N-residual.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Single and split nitrogen dose in wheat yield indicators

Costa

Mantai

Silva

et al. 2018

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

show abstract

“…Improvement in N use efficiency (NUE), the fraction of N fertilizer harvested, is one of the most effective approaches to face the challenges of food security, environmental contamination, and climate change (Zhang et al, 2015). The reported variability in NUE could be attributed to its primary components (i.e., NUpE and NUtE;Todeschini et al, 2016). Conceptually, the production of any plant is a result of its genetic background, environmental conditions, and the genotype ´ environment interaction (G ´ E).…”

Section: Introductionmentioning

confidence: 99%

“…However, this estimation is challenging, as it requires handling an open and unpredicted environmental condition (Tremblay et al, 2009) and is also subjected to substantial G ´ E interactions. Several phenological and physiological traits (i.e., the accumulation of biomass, thousand-grain weight, leaf chlorophyll content, normalized difference vegetation index, plant height [PH], flowering date, harvest index and grain filling duration [GFD]) were used to directly or indirectly select for genotypes with high NUE (Bogard et al, 2011;Gaju et al, 2011;Lopes and Reynolds, 2012;Todeschini et al, 2016). Thus, NUE is a function of NUpE and NUtE, where NUE = NUpE ´ NUtE (Cormier et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effect of Deprivation and Excessive Application of Nitrogen on Nitrogen Use Efficiency‐Related Traits Using Wheat Cultivars, Lines, and Landraces

et al. 2019

View full text Add to dashboard Cite

The International Maize and Wheat Improvement Center (CIMMYT) has identified the wheat (Triticum aestivum L.) irrigated area in the developing countries, which includes Egypt as Mega‐environment 1 (ME1). Agriculture intensification is expected to take place in this region to keep up with a continuously growing population, which might lead to more N application and losses because of the low N use efficiency (NUE) observed in this area. A panel of 40 wheat accessions including 10 commercially grown cultivars (CGCs), 10 elite lines from the CIMMYT, and 20 landraces from Egypt and Ethiopia were evaluated for grain yield (GY), grain protein content (GPC), NUE, agronomic NUE (AGNUE), stem rust, leaf rust, plant height (PH), leaf area, and total chlorophyll content (TCC), under four N levels. The panel was planted in two growing seasons (i.e., 2015–2016 and 2016–2017) and two locations. The results indicated that most of the CGCs were considered N efficient and N responsive. On the other hand, most landraces were N inefficient and nonresponsive because they produced higher GPC, PH, and TCC but had lower GY, AGNUE, and NUE. Furthermore, the landraces were less sensitive to the excessive N supply. ‘Sakha 94’, a commercially grown cultivar, was the most N efficient and N responsive; hence, it produced the highest GY at all N levels. The overall results might be scaled up to cover other Mediterranean basin regions that have similar environmental conditions.

show abstract

“…A redução de eficiência do uso de N representa um custo significativo e pode causar impactos ambientais [16].…”

unclassified