Mergia Greener Journal of Agricultural Sciences Vol. 7 (6), pp. 132-136, August 2017. ISSN: 2276-7770 Research Article Manuscript Number: 080817102 (DOI: http://doi.org/10.15580/GJAS.2017.6.080817102) Biomass Yield and Biological Potential of Grass (Chloris gayana) and Legume (Medicago sativa) Mixtures under Variable Seed Rates in Southern Region of Ethiopia Mergia Abera Southern Agricultural Research Institute, P.O Box 6, Hawassa, Ethiopia. Abstract The study was conducted at Hawassa Agricultural Research Center in Ethiopia to determine the optimum seed rate proportion of mixtures of Chloris gayana (CG) and Medicago sativa (MS) for obtaining higher dry matter yield (DM) from the mixtures. CG and MS were planted as pure stand and in mixtures using 75%(CG) + 25%(MS), 50%(CG) + 50%(MS), 25%(CG) + 75%(MS), 0%(CG) + 100%(MS) and 100%(CG) + 0%(MS),100%(CG) + 25% (MS) and 100%(CG) +50%(MS) seed rate proportion in a randomized complete block design with three replications. There were significant (P < 0.05) differences in the crud protein and lignin of the grass components among the grass/legume combinations due to seed rate proportions. Not significant (P > 0.05) effects were observed on the DM, the relative yield (RY) and the relative total yield (RTY). However; the 50: 50% mixture gave higher DM yield and had the highest RTY than other mixtures. From this result, it is concluded that 50: 50% mixture was found to be the optimum seed rate proportion to develop a balanced grass-legume mixture. In addition, further studies need to be undertaken under varying environments and harvesting strategies. Keywords: Forage yield, Biological Potential, Chloris gayana, Medicago sativa and mixtures. Return to Content View [Full Article – PDF] [Full Article – HTML] [Full Article – EPUB] Post-review Rundown View/get involved, click [Post-Review Page] References Begh, J.P. van den, 1968. Analysis of yield of grasses in mixture & pure stand. Versal. Land bouwked on derz. 714: 1-71. Denbela H, Bizuayehu A and Mesifin M, 2015. Participatory On-Farm Evaluation and Demonstration of Improved Legume Forage Species in Benatsemay Woreda of South Omo Zone. Journal of Biology, Agriculture and Healthcare, Vol.5, No.21, 2015. Daniel, K. (1989). Competitive Aspect of Grass-Legume mixtures with reference to field Experiment on Rhodes grass, lucence Mixture. In: Forage Network in Ethiopia. Newsletters No.21 ILCA, Addis Ababa. Diriba Geleti, 2001. Panicum coloratum and stylosanthes guianensis mixed pasture under varying relative seed proportion of the component species: yield dynamics and inter component interaction during the year of establishment. ESAP (Ethiopian Society of animal production). 2002. Livestock in Food security Roles and Contributions Proceedings of 9th Annual Conference of (ESAP) held in Addis Ababa, Ethiopia, August 30-31, 2001. 433pp. Droson, P.N (1976). Adapting species for forage mixture. In: multiple cropping. ASA special publication No. 21 Frames, J. and P. Newbould, 1986. Agronomy of white clover. Adv. Agron. 40:1-88. Gethun Degu, Wilfered Mwangi,Tenaw workayehu and Bill Grisley (1991). Areka area mixed farming zone, Northern Omo Region Diagnostic survey. Research report No.15 IAR, Addis Ababa. IAR, 1988. Newsletter Lemma Gizachew, Alemu Tadese and Abubeker Hassen (1993). Botanical Composition, Improvement Intervention and Cattle Weight Gain of natural pasture of Western Ethiopia. Paper Presented During the seventh international Grass land Congress Held in Netherlands and Australia from 8-12 Feb. (1993). Lulseged, G. 1985. The status of livestock, pasture and forage research and development in Ethiopia. Proceedings of the workshop held at Addis Ababa, Ethiopia, 8-10 January 1985. Institute of Agricultural Research, Addis Ababa, Ethiopia. Mergia Abera. (2002). Hawassa Research Center, Progress Report, Year 2002 Raya Abagodu (1988). Sidama mixed farming zone, Diagnostic Survey. Research Report No. 3/88 IAR Addis Ababa. Rhodes, Z. (1970) Competition between herbage grasses, as cited by, P.N. Drogom & Smith (1976). Adapting species for forage Mixture P. 223-25 In: Multiple cropping, ASA special Publication No. 21. Wit de C.T. 1960 on competition. Versl. Land bouwkd. On dert. 66.8: 1-82.