Prof.  Iqtidar  Hussain
Gomal University,  Pakistan

Title: Allelochemical Potential of Tree Leaf Litter Extracts in Agroforestry Systems: A Sustainable Approach to Crop Management

Abstract:

Deforestation and subsequent crop cultivation have long been practiced as competing land-use systems rather than complementary ones. Agroforestry, however, integrates woody perennials with herbaceous crops and/or livestock on the same land through spatial or temporal arrangements that promote ecological balance and economic viability. This system not only enhances biodiversity but also ensures a continuous supply of agricultural and forest products over several years. Recent advances in allelopathy have underscored the potential of allelochemicals—plant-derived secondary metabolites—as natural tools for sustainable crop management. These compounds influence plant growth, development, and ecological interactions by exerting either stimulatory or inhibitory effects on neighboring plants, pests, and soil microbes. Acting as natural herbicides, allelochemicals can suppress weed germination and growth, while others function as organic insecticides or growth regulators, thereby improving soil health and nutrient recycling. Their use reduces dependency on synthetic agrochemicals and supports environmentally friendly farming systems. This study aimed to evaluate the allelochemical potential of leaf litter extracts from five tree species—Eucalyptus, Moringa, Conocarpus, White Cedar (Melia azedarach), and Albizia lebbeck—commonly found in agroforestry systems. The research explores their influence on crop–weed interactions and environmental dynamics. Understanding allelochemical mechanisms in agroforestry provides a pragmatic approach to enhancing crop productivity, maintaining ecological stability, and promoting sustainable agriculture.

Keywords: Allelopathy, Agro-forestry, food security; allelochemicals, crop interference

Biography:

Dr. Iqtidar Hussain, Assistant Professor in the Department of Agronomy at Gomal University since 2014, earned his PhD in Agronomy (plant sciences) from the same institution. He has enhanced his skills as a keynote speaker, resource person, and organizer at national and international events. A member of the Soil Science Society of Pakistan, Weed Science Society of Pakistan, Pakistan Botany Society, and Pakistan Allelopathy Society, he has published 122 research articles globally.