Nutrient delivery to crops through fertiliser-coated seed: a systematic review

Abstract

Increasing agricultural productivity is essential to meet the challenge of feeding the ever-growing human population. This systematic literature review explores the use of fertiliser-coated seeds as a promising method to enhance nutrient use efficiency and crop productivity, particularly in resource-constrained regions. The study synthesises findings from 24 relevant articles retrieved from Web of Science and Scopus databases, focusing on seed coating with nutrients. The analysis of research papers published between 2004 and 2024 reveals an increasing interest in fertiliser-seed coating technology, with notable contributions coming from China, India, Pakistan and remains under-researched in Africa. The most commonly utilised nutrients in seed coatings are zinc (Zn) and phosphorus (P), with Arabic gum serving as a typical binding agent. Despite the potential benefits, the field remains under-researched, especially regarding the detailed chemical and mechanical aspects of seed coatings. The findings underscore the need for further research to develop effective seed coating formulations, use of macronutrients and optimise their practical application. By improving nutrient uptake and reducing losses, fertiliser-coated seeds can enhance crop productivity and sustainability, offering a viable solution to the challenges faced by smallholder farmers in developing countries.