Chromolaena odorata is an aggressive weed that adversely affects cereal crops and grazing lands in Serengeti-Tanzania. This study investigated allelopathic. Allelopathic Effects of Chromolaena odorata (L.) King & Robinson on Seed Germination and Seedlings Growth of Paddy and Barnyard Grass. Fulltext – Effect of Chromolaena odorata on the Growth and Biomass Allelopathy is defined as the direct or indirect harmful or beneficial effect of one plant on.

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Inter-allelic interactions in the inheritance of physical-quality traits in peanut Arachis hypogaea L. Weeds Science 31, Treated Petri dishes were each supplied with 25 ml of extract while the untreated control was treated with 25 ml of distilled water.

In the Laboratory, maize seed germination was not hindered by siam weed extract.

Critical Review in Plant Science 18, Ecological approach in allelopathy. For growth, fresh and dry matter production, seeds of Celosia argentea were sown in pots 21×11 cm containing top soil. Siam weed plants comprising of leaves and stems were cut, pounded with pestle and mortal.

Journal of Applied Sciences and Environmental Management

The objective of this study was therefore to determine the effect of siam allelpoathic extract on the germination and seedling performance of some crop and weed species. Siam weed extract had some inhibitory effect on soybean growth at the later stage of crop growth, while the growth of maize, cowpea, tridax and siam weed oodrata was stimulated by siam weed extract.


The result was contrary with the finding of Chengrong et al. The impact and compression damages anticipated climacteric ethylene peak and, consequently, fruit ripening.

Allelopathic potential of senna Cassia angustifolia Vahl. The pre-treated apple cubes demonstrated softer and crispier texture as well as an improved color when compared to control sample, obtained by freeze drying without pre-treatment.

This observation might be due to low concentration of allelochemical present in the aqueous extract. Effects of aqueous extract of Chromolaena odorata on the root length of Celosia argentea Table 4: Observations reveal that in areas where siam weed grows, growth of other plants is always hampered Akobundu Effect of fresh shoot aqueous extract FSE of Chromolaena odorata on the fresh weight of root and shoot of Celosia argentea.

Laboratory and greenhouse experiments were conducted at I. Alabi 1 and O.

Twenty five weed seeds were planted approximately 1cm deep, while fifty crop seeds were planted 3 cm pdorata. Volume 8 Issue 7 July issue. Abstract Chromolaena odorata a weed in the family Asteraceae has been shown to enhance the buildup of organic matter in fallow system in tropical soil. The shoot height and root length of seedlings treated with aqueous extract and those of the control were not statistically different Table 13. Growth, nutritional status and nitrogen metabolism in Vigna unguiculata L.

The Science of Allelopathy, Putnam, A. Time Weeks After Planting.

John Willey and Sons, Chichester, pp: Predictive models may help design management strategies to optimize oil content and oil yield of oilseed crops on different soil types. Assessment of allelopathic interference of Chenopodium album through its leachates, debris extracts, rhizophere and amended soil.


The same trend of germination was maintained in the greenhouse except that the weed seed germinated better than in the laboratory. The plant has been shown to enhance the buildup of organic matter in fallow system in tropical soil Agbim, ; Obatolu and Agboola, The allelopathic potential of Chromolaena odorata on seed germination and seedling growth of vigina unguiculata var.

July | Australian Journal of Crop Science

These observations agree with the findings of Efvect and Sabagyoallelkpathic obtained a stimulated growth of rice plants on soil containing burnt spear grass Imperata cylindrica Anderss.

Allelopathy is defined as the direct or indirect harmful or beneficial effect of one plant on another through the production of chemical compounds that escape into the environment Rice, Rahman M and Subagyo T Identification of allelopathic compound from rice Oryza sativa L.

An organic biofertilizer NPKB was produced from earthworm compound enriched in N by inoculation with free living bacteria, effective in nitrogen fixation. Principles and Practices in Plant Ecology: Corn and Soybean response to allelopathic effects of weed and residues. Five replications of each treatment were made.