Late-season nitrogen fertilization on maize yield: A meta-analysis
By Javier A. Fernández, J. DeBruin, C. Messina, Ignacio Antonio Ciampitti. 2020
84 citations recorded by the source corpus.
Abstract Late-season fertilizer N applications in maize (Zea mays L.) is a tactical agronomic practice that seeks to improve the synchrony between plant N demand and soil N supply. While this management practice can increase yield and limit unintended environmental impacts, a quantitative synthesis of the effects of late N applications on grain yield and resource use efficiency is lacking. A meta-analysis was conducted to identify patterns of yield response to late-N fertilization (post tenth-leaf, V10) across site-years studies. The goals of this study were to: 1) quantify the effect of late-season N fertilization on maize yield; and 2) identify an indicator for decision support of late-N fertilization. Published and unpublished sources from 1983 until 2018 were included in the meta-analysis (14 studies; n = 625 treatment means). Early-season (EN, ≈ 100% of fertilizer applied prior to the sixth-leaf, V6) and late-season (LN, 28% of N uptake at maturity occurring after silking) was positively related with yield increases for LN (+577 kg ha−1), and the contrast in REN between LN and EN was 0.04 kg kg−1. Environments prone to a greater N uptake during reproductive stages are proposed to be more suitable for late N applications. Prediction algorithms to inform tactical N management that can both increase productivity and sustainability could be developed provided adequate links between late-season N uptake and growing-season indicators could be established.
Subfields: Agronomy and Crop Science, Plant Science
View Paper: https://www.semanticscholar.org/paper/c52abda6e13e2a3efd21a358d910a6270f0b8ffe
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Agronomy and Crop Science
In Plant Science
Citations in the corpus
- Corn yield response to sub-surface banded starter fertilizer in the U.S.: A meta-analysis (2020, background): “A meta-analysis can help identify specific data patterns only when data across a broad set of agronomic conditions and corn production systems are combined and analyzed within an environmental and agronomic context (Fernandez et al., 2019).”