Abstract
Plant 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. This interaction is either positive or negative. Effects of allelochemicals to the agricultural and biological ecosystem are well documented. In leguminosae family many species are involved in releasing of allelochemicals. Many researchers found that this allelochemicals have both positive and detrimental effects on the successive legume crops. Legume monoculture is common in many parts of the world where they cause a numbers of ecological and economic problems such as decline in crop yield due to soil sickness, regeneration failure and replant problem. These negative effects of allelochemicals open a great concern on allelopathy research. This article reviews the adverse effects of allelochemicals, their extraction and isolation, mechanism inside the plant body. These all are done to find out the possible selection methods of succeeding crops to avoid the allelopathic effects in the next crop of a monoculture farm field. The main purpose of this article is to highlight the adverse allelopathic effects of legume crops to provide ways for sustainable development in agro-ecosystem.
Highlights
The family Leguminosae represents the third large plant family with 750 genera and more than 18,000 speciesHow to cite this paper: Mondal, Md.F., Asaduzzaman, Md. and Asao, T. (2015) Adverse Effects of Allelopathy from Legume Crops and Its Possible Avoidance
Allelopathic effects from crop residues and root exudates have extensively studied in legume such as alfalfa [43] [54]-[56], bean [25]
As allelopathy cause a great loss in legume crops in monoculture system in such a condition, allelopathy research is inevitable
Summary
The family Leguminosae represents the third large plant family with 750 genera and more than 18,000 speciesHow to cite this paper: Mondal, Md.F., Asaduzzaman, Md. and Asao, T. (2015) Adverse Effects of Allelopathy from Legume Crops and Its Possible Avoidance. The family Leguminosae represents the third large plant family with 750 genera and more than 18,000 species. (2015) Adverse Effects of Allelopathy from Legume Crops and Its Possible Avoidance. Grain and forage legume account for 27% of the world’s primary crop production, with grain legumes alone contributing 33% of the dietary protein nitrogen (N) needs of Humans [2]. The applications in the food trade are almost limited to protein from legume like soybean Glycine max, whereas other legume plants are less used. Other major grain legumes are pea (Pisumsativum), broad bean (Viciafaba), lentil (Lens culinaris), common bean (Phaseolus vulgaris), Lupinus spp., and chickpea (Cicerarietinum) are generally intercropped with cereals to enhance crop yield, increase nitrogenuse efficiency, and reduce weed infestation and the occurrence of plant disease [3]-[6]
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