*7.3.2 Allelopathic effects*

Allelopathy is the term used to describe the limitation of seed germination and plant growth caused by the release of allelochemicals by some plants or organic mulches. Allelochemicals inhibit weeds in crop plants; however, previous studies have shown that when plants like eucalyptus, acacia, and pine were mulched, they lowered or completely suppressed the growth of numerous weed species, demonstrating their allelopathic actions. Narrow-leaved plants, such as grasses, are not as badly damaged as broad-leaved plants or dicot species [40].
