Maize yield response to zinc sources and effectiveness of diagnostic indicators

Abstract: Maize yield is often limited by Zinc (Zn) deficiency. The objectives of this study were to i) Evaluate maize yield response to Zn applied at four different rates, ii). Evaluate the yield response and agronomic efficiency of maize to the application of a complex fertilizer, MicroEssentials®...

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Autores principales: Ruffo, Matías, Olson, Ron, Daverede, Inés
Otros Autores: Universidad Católica Argentina. Facultad de Ciencias Agrarias
Formato: Artículo
Lenguaje:Inglés
Publicado: 2019
Materias:
AGRICULTURA
MAIZ
ZINC
FERTILIZACION
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/5459
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139123456789-5459
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic AGRICULTURA
MAIZ
ZINC
FERTILIZACION
spellingShingle AGRICULTURA
MAIZ
ZINC
FERTILIZACION
Ruffo, Matías
Olson, Ron
Daverede, Inés
Maize yield response to zinc sources and effectiveness of diagnostic indicators
topic_facet AGRICULTURA
MAIZ
ZINC
FERTILIZACION
description Abstract: Maize yield is often limited by Zinc (Zn) deficiency. The objectives of this study were to i) Evaluate maize yield response to Zn applied at four different rates, ii). Evaluate the yield response and agronomic efficiency of maize to the application of a complex fertilizer, MicroEssentials® SZ™ (12-40-0-10S-1Zn), compared to different rates of mono-ammonium phosphate (MAP) + ammonium sulfate (AS) + zinc sulfate (ZnSO4), and iii). Evaluate the association between tissue Zn concentration and soil test Zn with the maize response to Zn fertilizer. Eleven experiments were carried out during the 2010, 2011 and 2012 growing seasons throughout eight states in the USA. Treatments consisted on four Zn rates of a physical blend of MAP + AS + ZnSO4 (0, 2.24, 4.48, 6.72, and 11.2 kg/ha Zn) and MicroEssentials SZ at a Zn rate of 2.24 kg/ha Zn. Nitrogen, phosphorus (P) and sulfur (S) rates were balanced across treatments (40 kg/ha P, 22 kg/ha S) and fertilizers were broadcast and incorporated immediately prior to planting. Treatment and location main effects were significant (P<0.001) on corn yields, whereas the interaction treatment x location was not (P=0.33). Maize responded positively to Zn fertilization; average yields across locations increased from 10,540 kg ha-1 without Zn to 11,530 kg ha-1 with 11.21 kg Zn ha-1 applied as a physical blend. The yield response and Zn agronomic efficiency of maize with the application of the complex fertilizer at a rate of 2.24 kg Zn ha-1 averaged 1004 kg ha-1 and 448 kg maize kg Zn-1, respectively, significantly higher (P<0.1) than the yield response and Zn agronomic efficiency with the application of a physical blend with the same Zn rate which averaged 293 kg ha-1 and 131 kg maize kg Zn-1, respectively. The Zn concentration in plant tissue of unfertilized plots varied greatly and was not related to the maize response to Zn fertilizer (r=0.01; P=0.98). With respect to soil Zn, a negative but non-significant relationship was found between maize response to Zn fertilizer and soil test Zn (r=-0.51; P=0.16).
author2 Universidad Católica Argentina. Facultad de Ciencias Agrarias
author_facet Universidad Católica Argentina. Facultad de Ciencias Agrarias
Ruffo, Matías
Olson, Ron
Daverede, Inés
format Artículo
author Ruffo, Matías
Olson, Ron
Daverede, Inés
author_sort Ruffo, Matías
title Maize yield response to zinc sources and effectiveness of diagnostic indicators
title_short Maize yield response to zinc sources and effectiveness of diagnostic indicators
title_full Maize yield response to zinc sources and effectiveness of diagnostic indicators
title_fullStr Maize yield response to zinc sources and effectiveness of diagnostic indicators
title_full_unstemmed Maize yield response to zinc sources and effectiveness of diagnostic indicators
title_sort maize yield response to zinc sources and effectiveness of diagnostic indicators
publishDate 2019
url https://repositorio.uca.edu.ar/handle/123456789/5459
work_keys_str_mv AT ruffomatias maizeyieldresponsetozincsourcesandeffectivenessofdiagnosticindicators
AT olsonron maizeyieldresponsetozincsourcesandeffectivenessofdiagnosticindicators
AT daveredeines maizeyieldresponsetozincsourcesandeffectivenessofdiagnosticindicators
bdutipo_str Repositorios
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