Influence of Allelochemicals Substances in Eucalyptus Species on Agricultural Crops: A Review

This paper aimed at compilling literatures on the effects of allelochemical of eucalyptus species on agricultural crops .Eucalyptus species releases many bioactive chemicals from its various parts such as leaves, stem, root and sometimes decomposed body through different mechanism into its surrounding environment. These bioactive chemicals are often termed as allelochemicals because they interact with the surrounding environment. Effects of allelochemicals to the agricultural crops are well documented. Many researchers found that this allelochemicals have detrimental effects on the successive crops production which causes ecological and economic threat such as decline in total crop yield .This paper review shows that, agricultural crops should not be interface with Eucalyptus species especially during the seed germination and early growth of seedlings and also, soil underneath eucalyptus plantation should not use in raising agricultural seeds.