Evaluation of Yield and Resistance Effect of Some Yam Genotypes (Dioscorea rotundata Pior) to Pest Attack at Harvest in Uyo, Southeastern Nigeria
DOI:
https://doi.org/10.54536/ajaset.v5i2.78Keywords:
Yam and Pest at harvestAbstract
Two years study was carried to assess level of resistance to yam beetle and termite attack by some yam genotypes in Uyo, southeastern Nigeria. The experiment was laid out in randomized complete block design replicated three times. The five yam genotypes tested for yam beetle and termite attack at harvest were; TDr 95/19127, 95/18894, 95/19531, 75/1/2 and Uyo popular local variety eteme. The results showed variations in yield and susceptible to termite and beetle attack at harvest. The TDr 75/1/2 had highest yield 30.41 and 29.75t/ha, followed by TDr 95/18894, 28.86 and 27.93t/ha in 2008 and 2009 respectively. The local variety had lowest yield 9.75 and 10.07 t/ha in 2008 and 2009 respectively. The local variety had 14.58% termite attack in 2008 while 95/19127 had 12.64% in 2009. The local variety had highest beetle attack 45.83% and 32.76% in 2008 and 2009 respectively. The least prone to termite and beetle attack was recorded in TDr 75/1/2, 2.72 and 8.15% respectively in 2008 and 2.99 and 6.59% in 2009 respectively. The study suggested that TDr 75/1/2 and 95/18894 should incorporate in the farming system of the study area due to their high yielding capacity and resistance to pest attack at harvest.
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REFERENCES
Agbaje, G. O., Adegbite, A. A., Akinlosotu, T. A. and Soyinka S. A. (2002). Performance of new hybrid yam (Dioscorea rotundata Poir) varieties under different cropping system. African Journal of Root and Tuber Crops 5:1:8-11.
Akinlosotu, T. A. (1984). Planococus halli, a new mealy bug pest of white yam (D. roundata) at Moor plantation, Ibadan, Nigeria, India Journal of Root Crops 10 (1 & 2): 71-73.
Asadu, C. I. A., Akamigbo, F. O. R., Nweke, F. I. and Ezumah, H. C. (1996). Evaluation of six cultivars of white yam (Dioscorea rotundata) across three yam-growing areas in South Eastern Nigeria. The Journal of Agricultural Science, 127, pp. 463-468.
Chukwu, G. O. and Chukwu, K. E. (2004). Cosmovision and Folk science in yam production. Prodceeding 36th Annual Conference of Agricultural Society of Nigeria. Federal University of Technology, Owerri, pp 125-129.
Degras, L. M. (1993). The yam. A Tropical Root Crop. Macmillan Press Ltd., London and Basingstoke 408pp.
Emehute, J. K. U., Ikotun T., Nwauzor, E. C. and Nwokocha, H. N. (1998). Crop protection. In: Food yams; Advances in Research. Orkwor C. C. Asiedu, R and I. J. Ekanayake eds. Pp 141-186.
FAO (2019). Food and Agriculture Organisation statistics for yams, Rome. A Reference Manual. Pp 66.
Onwueme, I. C. (1978). The tropical Root and Tubers Crops: Yams, Cassava, Sweet Potato and Cocoyams. John Wiley and Sons. New York. 234pp.
Onwueme, I. C. and Charles, W. B. (1994). Tropical root and tuber crops: Production perspective and future prospects. FAO, Rome, Italy. Pp. 40-51.
Peters, S. W., Usoro, E. J. Udo, E. J. Obot, U. W. and Okpon, S. N. (eds), (1989). Akwa Ibom State: Physical background, soils and land use and ecological problems. A technical report of the task force on and land use survey, Akwa Ibom State. 603p.
Taylor, T. A. (1964). Studies on the Nigerian Yam Beetles II: Bionomic and control. Journal of West African Science Assoc. 9(1):13-31.
Tobih, F. O. and Emosairue, S. O. (2006). Assessment of yam beetle damage under a screen house condition. The Nigerian Agricultural Journal. 37:50-52.
Tobih, F. O. and Emosairue, S. O. (2008). Damage by yam beetle, Heteroligus meles (Coloeptera: Dynastidae) under different population in yam cropping system. Global Journal of Pure and Applied Sciences 14(1): 5-8.
Tobih, F. O. Emosairue, S. O. and Okonmah L. U. (2007). Studies on the occurrence and damage by yam tuber beetles (Heteroligus spp) in Aniocha and Oshimili Areas of Delta State, Nigeria. journal of Central European Agriculture 8(1):129-134.
Tobih, F. O., Eruotor, P. G. Okonmah, L. U. and Egho, E. O. (2009). Field evaluation of eight cultivars of Dioscorea for possible resistance to yam beetle damage in Oshimili area of Delta State, Nigeria. Niger Agric. J. 40 No. 1 (2009): 104-110.
Wood, T. G. Smith R. W. Johnson, F. A. and Komolafe, P. O. (1980). Termite damage and crop loss studies in Nigeria-preharvest losses to yam due to termite and other soil pests. Tropical pest management. 26(4):355-370.
