Ver historia del Ing. Agr. Jorge Gesumaría

Visitas Totales: 1141474 | Visitas hoy: 741 | Usuarios Online: 1

Nutrient partitioning and stoichiometry in soybean: A synthesis-analysis

S. Tamagno, , , G.R. Balboa, Y. Assefa, P. Kovács, S.N. Casteel, F. Salvagiotti, F.O. García, W.M. Stewart, I.A. Ciampitti.

Solicitar texto completo a: -

On-farm attainable soybean yields are primarily limited by nutrient and water supply. High-yielding soybeans is related to high nutrient uptake. A proposed theoretical framework underpinning yield formation includes plant nitrogen (N) uptake, N harvest index (NHI), and N seed concentration (%Nseeds). The objectives of this study were focused on (i) investigating the effect of NHI and %Nseed on yield-to-uptake relation for N, and (ii) analyzing dry mass and N partitioning and extending this analysis to phosphorous (P) and potassium (K) uptake and (iii) studying the influence of specific seed:stover ratios on the relationship of N with P, and K uptake. Metadata on yield, nutrient uptake and specific-organ nutrient concentration (%nutrient) was summarized from experiments located in three different environments: Indiana, Kansas (both US), and Argentina (herein termed as IN, KS, and ARG, respectively). The main outcomes from this research were: 1) the yield-to-uptake relation for N was primarily explained by NHI; 2) the algebraic model proposed by Sinclair (1998), that includes each specific-organ %nutrient explained consistently nutrient (N, P or K) HI as a function of HI with different trend, and 3) plant nutrient ratios were primarily governed by vegetative %nutrient (stover fraction), acting as a nutrient reservoir or supply depending on the demand of nutrient in the seed. Further research on the nutrient and biomass partitioning should focus on examining the NHI:HI relationship under varying genotype x environment x management interaction.

Información de contacto

Departamento de Producción Vegetal, Facultad de Agronomía y Veterinaria - Universidad Nacional de Río Cuarto 

Ruta 36 km 601, Río Cuarto, Córdoba - Argentina   +54 (0358) 467-6159 / 504  / 509


Tutorial Transmisión Evento Yo... El Departamento de Producción vegetal FAV-UNRC pone a disposición de toda la comunidad un tutorial p... Leer mas
INFORME: Rendimiento Potencial... El rendimiento potencial del cultivo de maíz es que determinado por el genotipo, la oferta de radiac... Leer mas
Docencia Virtual en Produccion... Frente a la suspensión de clases presenciales motivo de la Pandemia COVID-19 el Departamento de Prod... Leer mas
Libro "El Cultivo de Maní en C... A partir del mes de mayo de 2017 se encuentra disponible en nuestro sitio web la Segunda Edición amp... Leer mas


Producción Vegetal © 2014 - Todos los derechos reservados -  

Responsables de Contenidos: Ing. Agr. Federico Morla - Ing. Agr. Guillermo Balboa 

ISSN 2422-5479