Foliar nutrition: Potential and challenges under multifaceted agriculture

Muhammad Ishfaq*, Aysha Kiran, Hafeez ur Rehman, Muhammad Farooq, Naseem Hassan Ijaz, Faisal Nadeem, Imran Azeem, Xuexian Li, Abdul Wakeel

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Soil-derived nutrients by plant roots can be limited under increasing environmental stresses such as higher incidence and duration of heat and drought, which affect agricultural productivity and environmental quality in multiple ways. These unprecedented challenges urge the adoption of novel and resource-efficient strategies to close yield gaps. Foliar fertilization has been well recognized for two decades to affect crop productivity, however, the consequences of foliar spray under multiple environmental stresses remains elusive, albeit evidence to resilience agriculture has grown widely. Here, we provide a focused overview of recent developments unravelling the significance of foliar nutrition under multifaceted agricultural production scenario(s). The mechanisms involved in the absorption and translocation of foliar-applied minerals are critically discussed to highlight their efficiency and effectiveness. The potential of foliar fertilization in improving crop yield and quality under environmental stresses has been evaluated based on a meta-analysis. Foliar-applied fertilizers showed higher crop plants yield and quality traits by 15–19% and 9–29%, respectively, under different environmental stresses. The knowledge gaps to improve the effectiveness of foliar nutrition from economic and ecological perspectives has been discussed. This comprehensive review draws attention to the potential of foliar fertilization to close yield gaps and endure agriculture sustainability, particularly under hostile soils and deteriorating environmental conditions.

Original languageEnglish
Article number104909
JournalEnvironmental and Experimental Botany
Volume200
DOIs
Publication statusPublished - Aug 2022

Keywords

  • Abiotic stresses
  • Crop yield and quality
  • Foliar fertilization
  • Increasing climate extremes
  • Plant uptake and mobilization
  • Soil nutritional constraints

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Plant Science

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