Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2013.51.58Panicum virgatum L.) in Upland and Lowland Conditions in Sokoto, Nigeria]]>AbdullahiA.A. AlieroB.L. AlieroA.A. ZuruA.A. 22013162The effects of organic, inorganic fertilizer and irrigation regime on yield parameters of P. virgatum in upland and lowland areas in Sokoto geoecological region of Nigeria were assessed. Four levels of nitrogen (0, 25, 50 and 75 kg N ha-1), three rates of farmyard manure (0, 5 and 10 t ha-1) and three irrigation regimes (w2, w4 and w6) were set up as a split -plots design. Farmyard manure and irrigation regimes were combined and allocated as the main plots, while nitrogen rates were assigned to the sub-plots and each replicated three times. Results revealed that raising nitrogen rate from 50 to 75 kg N ha-1, farmyard manure rate from 5-10 t ha-1 or irrigation intervals from 2 to 4 days did not show a significant (p>0.05) increase in yield components evaluated. Dry matter accumulation was significantly (p<0.05) affected by irrigation regime in both seasons and locations and 2 day interval irrigation had the highest dry matter yield. A significant interaction between nitrogen and manure application was observed only at upland in 2008/2009 and a combination of 75 kg N ha-1 and 10 t ha-1 manure produced the highest values in all the parameters evaluated. The study suggest that 50 kg N ha-1 with 5 t ha-1 of farmyard manure and 2 day irrigation interval gave the highest yield. A combination of 50 kg N ha-1, with 5 t ha-1 of farmyard manure and 2 day irrigation interval were found to be optimum for growth and yield of Switchgrass under both lowland and upland conditions in Sokoto geoecological zone of Nigeria.]]>Akoun, J.,2005Allium cepa L) Var. Nsukka Red.]]>94348Alexandrova, K.S., P.D. Denchev and B.V. Conger,1996In vitro development of inflorescences from Switchgrass nodal segments.]]>36175178Amans, E.B., M.K. Ahmed and J.Y. Yayock,1990117Bies, L.,20063412031205Bransby, D.,20052005Brejda, J.J.,20002000pp: 177-2000pp: 177-2000John J.B., L.E. Moser and K.P. Vogel,199890753758Brice, J., L. Currah, A. Mahins and R. Bancrott,1997pp: 4-6pp: 4-6Carpenter-Boggs, L., J.L. Pikull, M.F. Vigil and W.E. Riedell,20006420382045Casler, M.D., K.P. Vogel, C.M. Taliaferro and R.L. Wynia,200444293303Casler, M.D., K.P. Vogel, C.M. Taliaferro, N.J. Ehlke and J.D. Berdahl et al.,20074722492260Entry, J.A., C.C. Mitchell, and C.B. Backman,199623353358Franzluebber, K., L.R. Hossner and A.S.R. Juo,1998Pages: 50Pages: 50Hastings, C. and E.C. Prince,20072007Kowal, J.M. and D.T. Knabe,2002pp: 128pp: 128Ladd, J.N., M. Amato, L. Zhou and J.E. Schultz,199426821831Masters, R.A., R.B. Mitchell, K.P. Vogel and S.S. Waller,199346183188McLaughlin, S., J. Bouton, D. Bransby, B. Conger and W. Ocumpaugh et al.,19991999pp: 282-299pp: 282-299Reeves, D.W.,199743131167REAP,20042004Samson, R.,20082008Samson, R.,20072007Sanderson, M.A, G. Brink, K. Higgins and D. Naugle,20042004pp: 389-416pp: 389-416Samson, R., S. Mani, R. Boddey, S. Sokhansanj and D. Quesada et al.,20054 perennial grasses for developing a global BIOHEAT industry.]]>25461495Selim, S.M.A., M.R. Rokba, M.R. Hassan and M.A. Hussain,1993208796Smolander, A., A. Kurka, V. Kitunen and E. Malkonen,199426957962Stegelmeier, B.L., S.A. Elmore, S.T. Lee, L.F. James and D.R. Gardner et al.,2007Panicum virgatum) Toxicity in Rodents, Sheep, Goats and Horses.]]>2007pp: 113-117pp: 113-117Thomson, D.J.,19962685768Tian, G., G.O. Kolawole, B.T. Kong and G. Kirchoff,2000224287296USDA and NRCS,2008Panicum virgatum (Switchgrass).]]>2008