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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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 Log In Sign up!

It was suggested that the weed should be soil incorporated to serve as green manure. American chemical society, Washinton, DC. ACS symposium series Allelopathic mechanisms of velvetleaf Abutilon theophrasti Medic.

Results showed dhromolaena the effect of year and cultivars’ emergence time were not significant, but the effect of sowing date was significant.

Allelopathic effects of water extracts of Artemisia princeps var. Once entered into the soil, the bioactive concentration of allelochemicals is determined through the sorption, fixation, leaching and chemical and microbial degradation Blum, The plant population decreased significantly with increasing weeding frequency.

July | Australian Journal of Crop Science

Three non-linear models including den-like, segmented, and beta functions were used to describe the relationship between emergence rate and odorzta. The study was conducted in a greenhouse in a completely randomized design, consisting of the concentrations of 0 and 1 mM of Al. The optimum dose of top-dressed nitrogen in the common bean and castor intercropping system is 30 and 70 kg ha -1split at 25 and 35 DAE of the mentioned crops.

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After ten days of applying the treatments we evaluated the activity of nitrate reductase, concentrations of protein and total soluble amino acids, proline, ammonia, macronutrients, and dry weight of the shoots and roots.

Principles and Practices in Plant Ecology: Alabi had indicated that the stem girth and number of branches in thorny mimosa Mimosa invisa Mart could not be assessed until 6 weeks after establishment due to small plant size. Five replications of each treatment were made. Effects of aqueous extract of Chromolaena odorata on the shoot height of Celosia argentea.

The seeds were tested for germination with or without extract. The polynomial, Page and sigmoid models exhibited a good fit to the experimental points obtained while freeze-drying.

Journal of Applied Sciences and Environmental Management

Weed Science in the tropics: The pots were watered every evfect day with ml distilled water. Results of weed dry weight assessed at 8 and 10 WAP Table 4show that the growth of tridax and siam weed was stimulated by the extract of siam weed from 8 and 10 WAP and after, respectively.

The same trend of germination was maintained in the greenhouse except that the weed seed germinated better than in the laboratory. Measurements were carried out on five efdect and mean value were calculated. Lawal 2B. Seedlings were thinned to 4 plants per pot 3 weeks after planting WAP.

Adetayo 1O. Allelopathic potential of Wedelia trilobata L.

Tax E and two weeds — Siam weed and tridax Tridax procumbens L. 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.

The root system was carefully excavated. Soil chemical properties, including efect contents, soil pH, water, and electrical conductivity, when used as covariates or predictors in calibration and validation partial least squares regression models, provided new insights into the variation structure and prediction of crop performance.

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Therefore, the objective of this study was to determine the effects of aqueous extract of Chromolaena odorata on Celosia argentea. Effect of seed rate and manual weeding on weed infestation and subsequent crop performance of sesame Sesamum indicum L. Allelopathy and Sustainable Agriculture. The inhibitory effect allelpoathic siam weed extract on germination of its seed is in agreement with the findings of Bhowmik and Doll and Johnson and Harold who observed that many weed species exhibit allelopathic autotoxic effects on the germination of their own seeds.

The results obtained from the study indicated chdomolaena the shoot height, leaf areafresh and dry weights of the plants treated with the aqueous were higher than those of the plants in the control regime.

At 4 and 6 WAP for seedlings and 8 and 10 WAP for weed seedling, samples were randomly harvested, dried and weighed to determine dry matter content. Ahn and Chung and Chuo used allelopathy as an ecological control tool against several weeds in rice. Volume 8 Issue 7 July issue. Four statistical techniques consisted of canonical correlation CCprincipal component analysis PCcluster analysis, and stepwise regression were undertaken for exploring the relationships. Alabi 1 and O. Leaf extracts of both species significantly inhibited growth parameters of E.

Proceedings of the 4th World Congress on Allelopathy.