Carbon and nitrogen allocation and grain filling in three maize hybrids differing in leaf senescence

Pommel, Bernard; Galláis, A.; Coque, Marie; Quilleré, Isabelle; Hirel, Bertrand; Prioul, Jean‐Louis; Andrieu, Bruno; Floriot, Mathieu

doi:10.1016/j.eja.2005.10.001

Cited by 124 publications

(86 citation statements)

References 32 publications

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“…This contrasts with prior research findings that modern hybrids are usually higher in post-silking N uptake and remobilize less of their R1N (Mi et al, 2003;He et al, 2004;Pommel et al, 2006). However, this pattern is likely the result of the modern hybrids having greater leaf N content at R1 because leaves represent the largest pool of N for remobilization (Masclaux-Daubresse et al, 2010;Chen et al, 2015).…”

Section: R6 Biomass and Nitrogen Accumulationcontrasting

confidence: 55%

“…Using 15 N, Yang et al (2016) found that RemobN played a greater role in meeting ear N demand during early grain filling and that PostN became more important during the later stages of grain development. There is a trade-off between RemobN and postsilking nitrogen uptake (PostN) (Rajcan and Tollenaar, 1999;He et al, 2004;Pommel et al, 2006;Ciampitti and Vyn, 2011;. It has been well documented that modern hybrids accumulate more PostN compared to older hybrids because of increased total plant N uptake and leaf stay green (Mi et al, 2003;Ciampitti and Vyn, 2012;Chen et al, 2015;Mueller and Vyn, 2016).…”

Section: Core Ideasmentioning

confidence: 99%

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Late‐Split Nitrogen Applications Increased Maize Plant Nitrogen Recovery but not Yield under Moderate to High Nitrogen Rates

Mueller

Camberato

Messina³

et al. 2017

Agronomy Journal

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N itrogen fertilizer is a high-cost input for maize production that is diffi cult to manage because efficient crop accumulation and utilization is dependent on agronomic, genetic, biological, and environmental factors. Within the wide spectrum of N fertilizer management decisions, a key interest has been improving the effi ciency with which N fertilizers are used by optimizing N rate and the timing of N application. One way to pursue increased N fertilizer effi ciency may be with the use of late-season, split N applications instead of the more common practice of N application near or shortly aft er planting (Scharf et al., 2002). Reasons that can motivate implementing late-season N applications include reducing work load during planting season, avoiding the frequently wet spring soil conditions, and allowing in-season assessment of N fertilizer needs (Scharf et al., 2002). Once N is applied to the soil it is vulnerable to losses from denitrifi cation and leaching, as well as volatilization and surface run-off if not injected (Raun and Johnson, 1999). When considering the potential benefi ts of late-season N applications, of prime interest are how the timing of N application impacts post-silking nitrogen accumulation (PostN), and the relationships between PostN and grain yield.Previous literature refl ects mixed results on the eff ects of the timing of sidedress N application. While Scharf et al. (2002) found no evidence of decreased grain yield when 100% of the N application was delayed until V11, Binder et al. (2000) reported a 12% reduction in maximum grain yield due to delaying sidedress application until V6 in a silty-clay soil. Similarly, Walsh et al. (2012) found a yield loss in six out of nine sites when sidedress was delayed until V10-VT. Th e latter authors attributed this yield decrease to irreversible yield loss due to early season N stress. Th ese studies indicate that a more feasible split-N application strategy would involve applying the majority of the N fertilizer early in the growing season and delaying a supplemental portion until the late-vegetative aBStractTh eoretically, N losses are reduced by synchronizing fertilizer additions with plant uptake requirements. We investigated the impacts of supplemental, late-season N applications on nitrogen fertilizer recovery effi ciency (NRE), and N accumulation and partitioning in maize (Zea mays L.) at silking (R1) and physiological maturity (R6). Also tested was whether modern hybrids responded diff erently to split-N applications compared to hybrids released 20 yr ago. We compared 3 to 4 N rates ranging from 0 to 245 kg N ha -1 applied either in a single application at V3, or split with the last 45 kg N ha -1 delayed until V12, over 3 yr. Two newer hybrids (2012 and 2014) and two 1990 era hybrids (1991 and 1995) were compared at all N treatment combinations. Additional plant N accumulation following latesplit N applications was already apparent at R1, particularly in stems. Late-split N application increased both whole-plant R6 N accumulation and N...

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Section: R6 Biomass and Nitrogen Accumulationcontrasting

confidence: 55%

Section: Core Ideasmentioning

confidence: 99%

Late‐Split Nitrogen Applications Increased Maize Plant Nitrogen Recovery but not Yield under Moderate to High Nitrogen Rates

Mueller

Camberato

Messina³

et al. 2017

Agronomy Journal

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“…2005). This idea is supported by Pommel et al (2006) who formulated a thesis, that processes of assimilates partitioning among maize parts are governed by a set of genes. However, this phenomenon can be also explained by means of prolonged capacity of stay-green varieties to accumulate starch during final stages of plant maturation, whereas nitrogen accumulation stops much earlier, i.e.…”

Section: Resultsmentioning

confidence: 77%

Effect of magnesium or zinc supplementation at the background of nitrogen rate on nitrogen management by maize canopy cultivated in monoculture

Potarzycki¹

2011

Plant Soil Environ.

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In five consecutive growth seasons from 2003 to 2007 a response of maize variety Eurostar (var. FAO 240) to supply of NPK fertilizer supplemented with magnesium or zinc was investigated. The aim of the study was to evaluate the role of zinc (NPK + Zn) or magnesium (NPK + Mg) in controlling nitrogen management by maize crop fertilized with 80 and 140 kg N/ha. In the course of the study, total grain nitrogen content did not show any response to both experimental factors and weather variability, as well. However, the obtained results indicate, that magnesium and zinc have significantly increased SPAD (chlorophyll index) indices of maize cob leaf at anthesis. A significant effect of both factors interaction on nitrogen accumulation in grain and cob covering leaves was noted, but limited to the 80 kg N/ha treatment. The physiological role of Mg and Zn in nitrogen management was most manifested throughout its greater recovery from nitrogen fertilizer applied at the rate 80 kg N/ha, amounting to 92 and 94% respectively; for the NPK, it was only 78%.

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“…Em muitos casos, o controle químico é eficiente, economicamente viável e capaz de garantir maior produtividade e qualidade de produção (12,13,17). Segundo Miura et al (11) o manejo de doenças fúngicas pelo uso de fungicidas pode reduzir danos no percentual de grãos inteiros, sendo importante avaliar o efeito do fungicida na qualidade física dos grãos de arroz.…”

Section: Efeito Da Aplicação De Fungicidas No Controle De Doenças Folunclassified

Efeito da aplicação de fungicidas no controle de doenças foliares de arroz irrigado e sua relação com o rendimento industrial

et al. 2016

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RESUMO As doenças foliares do arroz podem comprometer o enchimento e a maturação dos grãos por acelerar a sua secagem e, consequentemente, reduzir o rendimento industrial. O uso de fungicida tem o potencial de reduzir os danos das doenças foliares da cultura e aumentar o rendimento industrial. O objetivo deste trabalho foi avaliar o número de aplicação de fungicida em diferentes estádios fenológicos no controle de doenças foliares para o patossistema múltiplo (brusone, mancha parda e escaldadura) e sua relação com o rendimento industrial (rendimento de benefício, grãos inteiros e grãos quebrados). Os experimentos foram conduzidos nas safras agrícolas 2011/12 e 2012/13 no município de Rio do Oeste, localizado no Alto Vale do Itajaí, estado de Santa Catarina. Nos experimentos foi utilizada a cultivar SCS 116 Satoru. O delineamento foi de blocos casualizados, com quatro repetições e seis tratamentos constituídos de aplicações de mistura de fungicida difenoconazol e azoxistrobina, sendo um dos tratamentos (testemunha) sem aplicação. As aplicações de fungicidas foram feita no estádio vegetativo V8 e nos reprodutivos R0, R2, R4 e R6. A colheita foi de forma manual, colhendo-se 2m2 da área central de cada parcela. Uma, duas, três, quatro e cinco aplicações de fungicida apresentaram incremento médio em relação á testemunha nas duas safras, de 6%, 7,2%, 13,1%, 17,4% e 19,2% no rendimento debenefício,14,6%, 28,5%, 36,1%, 45% e 48,7% para grãos inteiros e reduziu o percentual de grãos quebrados em 4,4%, 13,2%, 21,7%, 35% e 41,4,1%, respectivamente.

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Carbon and nitrogen allocation and grain filling in three maize hybrids differing in leaf senescence

Cited by 124 publications

References 32 publications

Late‐Split Nitrogen Applications Increased Maize Plant Nitrogen Recovery but not Yield under Moderate to High Nitrogen Rates

Late‐Split Nitrogen Applications Increased Maize Plant Nitrogen Recovery but not Yield under Moderate to High Nitrogen Rates

Effect of magnesium or zinc supplementation at the background of nitrogen rate on nitrogen management by maize canopy cultivated in monoculture

Efeito da aplicação de fungicidas no controle de doenças foliares de arroz irrigado e sua relação com o rendimento industrial

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