Monochromatic red LED light supplementation: A dual solution for disease resistance and yield enhancement in glasshouse production in New Zealand

Abstract

This paper explores the potential of monochromatic red-light supplementation as a sustainable and innovative solution to challenges in greenhouse production, including low winter yields and high disease pressure. Greenhouse cultivation systems, though efficient, often rely heavily on chemicals for disease control, posing environmental and health risks. Monochromatic red light, delivered through energy-efficient LED systems, has been shown to enhance plant immunity by inducing secondary metabolite production and activating defence pathways, reducing the need for chemical interventions. Drawing on recent studies and ongoing research at Lincoln University, this paper emphasises the need for further investigation into the role of red light in improving crop yield and quality while minimising environmental impact. Our preliminary trials with lettuce plants suggest promising outcomes, laying the groundwork for sustainable disease management strategies that align with New Zealand's goal of promoting environmentally responsible agriculture.