Design and Fabrication of an Engine Powered Weeder Sprayer Machine for Maize
No Thumbnail Available
Date
2026
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Weeds are a major constraint to crop productivity, contributing to an estimated 25–26% yield
losses in major crops annually and billions in financial losses worldwide. Traditional weed
control methods, such as manual removal and conventional mechanical devices, often result in
high labor costs, significant drudgery, and inconsistent efficacy, particularly in smallholder
farming contexts. Engine-powered weeding machines have demonstrated substantially
improved weeding efficiency up to 90% compared to manual methods, which typically achieve
65–82% efficiency.
This project focused on the design and fabrication of an engine-powered weeder-sprayer
machine capable of mechanically removing weeds in crop inter-rows while simultaneously
spraying herbicides within intra-row. The machine integrates dual implements, that is, the fixed
tines for physical weed removal and cutting and a targeted spraying system for precise selective
herbicide application. Performance benchmarks show that such machines can deliver a field
efficiency of approximately 86%, maintain plant damage below 4%, and reduce weeding costs
by over 60% when compared to traditional practices.
By leveraging mechanical automation and selective herbicide application, the proposed
solution aims to address labor shortages and improve both the quality and quantity of crop
production. The system is designed to be accessible, economical, and environmentally
conscious, promising substantial benefits for small and medium-sized farms and aligning with
the demand for sustainable agriculture.