Phosphorus use Efficiency of Safflower (<i>Carthamus tinctorius</i>L.) and Sunflower (<i>Helianthus annuus</i>L.)

Abbadi, Jehad; Gerendás, Jóska

doi:10.1080/01904167.2014.983115

Cited by 9 publications

(3 citation statements)

References 46 publications

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“…Phosphorus-e cient lettuce genotypes were identi ed in this research across different types. Genetic variation for PUE has been previously identi ed in lettuce (Buso and Bliss 1988;Bertossi et al 2013), and in related species including sun ower and sa ower in the Asteraceae (Compositae) family (Abbadi and Gerendás 2015). Many of the previous studies on PUE were conducted in greenhouses and in other cropping systems different to the one in this research.…”

Section: Discussionmentioning

confidence: 96%

Examining Phosphorus Use Efficiency Across Different Lettuce (Lactuca sativa L.) Genotypes

Kreutz

Bhadha

Sandoya

2021

Preprint

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Most agricultural soils worldwide present limited availability of phosphorus (P) and crops require supplemental application of P fertilizers. Due to the economic and environmental concerns derived from the use of P fertilizers, identifying and breeding P-efficient lettuce (Lactuca sativa L.) cultivars is imperative for the reduction of production costs and implementation of more sustainable practices. Phosphorus use efficiency (PUE) remains unexplored in lettuce. In this research, 66 lettuce genotypes of six morphological types were evaluated between standard recommended P rate (202 kg·ha–1 of P2O5) and half-P rate (101 kg·ha–1 of P2O5). Lettuce genotypes were tested in two field experiments conducted during the 2017-2018 and 2019-2020 growing seasons in the organic soils (Histosols) within the Everglades Agricultural Area of South Florida. Head weight, marketability, tissue P concentration, soil total-P concentration, and soil extractable P were measured. Genetic variation was detected for PUE within romaine, crisphead, butterhead, Latin, and loose leaf. Eight genotypes were found to produce similar or higher head weight and good marketability when grown in the half-P rate compared to the standard P rate. No correlations were detected between head weight and tissue P concentration, indicating possible variation in P uptake and utilization on the tested lettuce genotypes. A significant, positive correlation was observed for soil total-P and soil extractable P, indicating that the increase in total P concentration of Histosols resulted in higher availability of P to plants. Lettuce genetic variation for PUE may allow further development of P-efficient cultivars for conventional and alternative production systems. More comprehensive investigations must be conducted to elucidate the genetic mechanisms controlling PUE in lettuce.

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Section: Discussionmentioning

confidence: 96%

Examining Phosphorus Use Efficiency Across Different Lettuce (Lactuca sativa L.) Genotypes

Kreutz

Bhadha

Sandoya

2021

Preprint

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“…Nitrogen efficiency indexes were calculated as follows: nitrogen use efficiency, NUE (g g -1 ) = total plant dry mass/applied nitrogen (Xu et al, 2012); nitrogen uptake efficiency, NUpE (g g -1 ) = nitrogen uptake/dry root mass (Fageria, 1998); nitrogen utilization efficiency, NUtE (g g -1 ) = total plant dry mass/nitrogen content in the whole plant (Abbadi & Gerendás, 2015); nitrogen physiological efficiency, NPE (g g -1 ) = (total plant dry mass with fertilization -total plant dry mass without fertilization)/ (accumulated nitrogen with fertilization -nitrogen accumulated without fertilization) (Fageria, 1998); recovery efficiency, RE (%) = (nitrogen accumulated with fertilization -nitrogen accumulated without fertilization)/applied nitrogen (Fageria, 1998); and biomass conversion efficiency, BCE (g g -1 ) = shoot dry matter mass/nitrogen in the shoot (Fageria, 1998).…”

Section: Methodsmentioning

confidence: 99%

Nitrogen efficiency indexes for evaluating nitrogen uptake and use in ornamental bromeliad’s root system and tank

Silva

Ferreira

Silva

et al. 2018

Pesq. agropec. bras.

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The objective of this work was to evaluate if nitrogen use efficiency (NUE) indexes can elucidate functional differences in nutrient uptake between the root system and tank of epiphytic bromeliads. The bromeliads Guzmania lingulata and Vriesea 'Harmony' received fertilizers in their tanks or through their roots using modified Hoagland & Arnon solution, with 0.00, 2.62, or 5.34 mmol L-1 nitrogen, as urea. After 90 days, nitrogen contents in leaves and plant biomass were evaluated, and NUE indexes were calculated. Guzmania lingulata and V. 'Harmony' fertilized in their tanks with 5.34 mmol L-1 had the highest averages of nitrogen uptake efficiency and recovery efficiency; those fertilized with 2.62 mmol L-1 through their roots showed the highest averages of NUE, nitrogen utilization efficiency, nitrogen physiological efficiency, and biomass conversion efficiency. The NUE indexes, besides being an effective tool to assess the nutritional status of ornamental bromeliads, reveal that the root system of epiphytic bromeliads is functional for nitrogen uptake and use.

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“…Nitrogen Utilization Efficiency (NUtE, g g -1 ) = Total Plant Dry Mass/Nitrogen Content in Whole Plant (ABBADI and GERENDÁS, 2015).…”

Section: Cuttings Ofmentioning

confidence: 99%

Nitrogen use efficiency as a tool to evaluate the development of ornamental cacti species

Silva

Ferreira

Jocys

et al. 2017

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Nitrogen efficiency, along with associated indexes, is a widely used tool for assessing nutritional status in agricultural species. However, this parameter is not used in studies with ornamental plants, especially epiphytic cacti species. In particular, we know very little about the potential response of ornamental cacti to N absorption and use. Therefore, this study aimed to evaluate N use efficiency (NUE), along with its associated parameters, in three species of ornamental cacti under nitrogen nutrition. To accomplish this, Rhipsalis baccifera, Rhipsalis paradoxa and Hatiora salicornioides were fertilized by Hogland and Arnon nutrition solution modified and enriched with urea in the concentrations of 0, 33.3 or 66.6 mM N during 180 days. At the end of the experiment, efficiency indexes were calculated. Efficiency parameters varied according to species. R. baccifera presented the greatest dissimilarity among the species, with highest uptake efficiency (NUpE), but lowest use efficiency (NUtE) and biomass conversion (BCE). R. paradoxa presented high values for NUE, NUtE, BCE and physiological efficiency (NPE) at concentrations of 33.3 mM N, suggesting greater investment in biological processes with lower supply of N. H. salicornioides had the highest averages in most parameters measured. Our results show that these indexes provided important comparative baseline information on nutritional status and investment strategy, thus serving as a suitable analytical tool to increase knowledge about this group of ornamental plants. Keywords: Cactaceae, urea, NUE, plant growth. RESUMO Índices de eficiência do uso de nitrogênio como ferramenta para avaliação do desenvolvimento de espécies de cactos ornamentaisOs índices de eficiência nutricional são ferramentas bastante utilizadas para avaliação de status nutricional e requerimento de nitrogênio (N) em espécies com interesse agrícola. Contudo este parâmetro tem sido pouco utilizado no âmbito dos estudos com plantas ornamentais, sobretudo espécies de cactos epífitos havendo uma lacuna no conhecimento sobre o potencial de respostas que esses índices podem promover sobre as estratégias de absorção e utilização de N para estas espécies. O objetivo deste estudo foi avaliar a eficiência do uso de N (NUE) e seus demais parâmetros em três espécies de cactos ornamentais sob nutrição nitrogenada. Plantas de Rhipsalis baccifera, Rhipsalis paradoxa e Hatiora salicornioides receberam solução nutritiva de Hougland and Amon modificada e enriquecida com ureia nas concentrações de 0,0; 33,3 ou 66,6 mM N durante 180 dias. Ao término do experimento foram calculados os índices de eficiência. Os parâmetros de eficiência variaram de acordo com a espécie, sendo observado que R. baccifera apresentou maior dissimilaridade entre as espécies, com a maior eficiência de absorção (NUpE), mas menor eficiência de utilização (NUtE) e conversão em biomassa (BCE). R. paradoxa apresentou alta eficiência de NUE, NUtE, BCE e eficiência fisiológica (NPE), demonstrando maiores valores dessas variáveis nas...

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Phosphorus use Efficiency of Safflower (Carthamus tinctoriusL.) and Sunflower (Helianthus annuusL.)

Cited by 9 publications

References 46 publications

Examining Phosphorus Use Efficiency Across Different Lettuce (Lactuca sativa L.) Genotypes

Examining Phosphorus Use Efficiency Across Different Lettuce (Lactuca sativa L.) Genotypes

Nitrogen efficiency indexes for evaluating nitrogen uptake and use in ornamental bromeliad’s root system and tank

Nitrogen use efficiency as a tool to evaluate the development of ornamental cacti species

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