Variation in Yield and Yield Components of Tropical Forage Grass Species Evaluated in the Southern Guinea Savanna of Nigeria

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G. O. S. Ojo
H. Madu
A. I. Okwori


Seven improved tropical grass species, namely, Andropogon gayanus Kunth., Brachiaria ruziziensis Germain & Evrard, Cenchrus ciliaris L., Chloris gayana Kunth, Panicum maximum var. coloratum C.T, Paspalum orbiculare G. Forstand Sorghum almum Parodi were evaluated for yield and yield components at the Teaching and Research Farm of the Federal University of Agriculture, Makurdi, Nigeria in 2015 and 2016. The experiment was laid out in a randomized complete block design with three replications in each of the years. Results showed that the evaluated grass species could be cut at an early age when the leaf: stem ratio is high enough for the ruminants to derive maximum nutritional benefit and need not be delayed till 16 weeks after planting. The highest correlation between plant height and grain yield was observed at 4 weeks (r = 0.69) and 8 weeks (r = 0.70) after planting, implying that the taller the plant species at this stage of growth, the higher the probability for high grain yield. Identification and selection of tropical grass species for improvement in grain production should, therefore, be carried out between 4 and 8 weeks of growth. All the seven tropical forage grass species performed favourably well in terms of growth and yield, with the positive response to increasing rainfall and further studies on multi-location evaluation within the Southern Guinea Savanna agro-ecologicalal zone of Nigeria is recommended.

Tropical forage grass species, ruminants, evaluation, Southern Guinea Savanna.

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How to Cite
Ojo, G. O. S., Madu, H., & Okwori, A. I. (2020). Variation in Yield and Yield Components of Tropical Forage Grass Species Evaluated in the Southern Guinea Savanna of Nigeria. Asian Journal of Research in Crop Science, 5(2), 1-7.
Original Research Article


Obi IU. Maize, its agronomy, diseases, pest and food values. Optimal Computer Solutions ltd. Nigeria. 1991;206.

Olubukola A, Faluyi JO. Morphological, agrobotanical and reproductive studies in 35 accessions of Panicum maximum Jacq. in South Western Nigeria. Research Journal of Botany. 2006;1(2): 64–74.

Hamdy M, Ali MMA, Ekram AM, Ahmed SM. Response of growth parameters, forage quality and yield of dual purpose sorghum to re-growth and different levels of farm yard manure and nitrogen fertilizers In new reclaimed soil. International Journal of Current Microbiology and Applied Sciences. 2015;4(11):762–782.

Whiteman PC. Tropical pasture science. Oxford University Press. New York. 1980;424.

Mitchell JO, Redfearn DD. Predicting developmental morphology in switch grass and big bluestem. Agronomy Journal. 1997;89:827–832.

Menezes LFG, Venturini T, Kusi F, Kruger CE, Ronsani R, Paris W, Biesek. Grazing oats with different forage allowances, with or without supplementation. Arquivo Brasileiro de Medicina Veterinaria e Zootecnia, (Brazilian Journal of Veterinary and Animal Science). 2012;64(3):623-630.

Hare MD, Tatsapong P, Phengphet S. Herbage yield and quality of Brachiaria cultivars, Paspalum atratum and Panicum maximum in North East Thailand. Tropical Grassland Journal. 2009;43:65-72.

Rodrigues CS, Dominicio NJ, Silveria MCT, Silva SC, Souse BML, Detmann E. Characterization of tropical forage grass development pattern through the morphogenetic and structural characteristics. Revista Brasileria de Zootecnia. 2011;40(3):527–534.

Onyeanagu CC, Nnadi CC, Agbo CC. Influence of cutting height and nitrogen fertilization on the proximate composition, mineral nutrients, anti-nutrient factors and their correlation in guinea grass (Panicum maximum Jacq) Pasture. Nigerian Journal of Crop Science. 2018;5(1):18–3.