Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2005.1785.1791Capsicum frutescens) and Okra (Abelmoschus esculentum) at Different
Phosphorus Fertilizer Application Levels on Two Tropical Soils]]>A. AkinrindeEzekiel Ismail O. Adigun 102005510Crop growth is continuously threatened by Phosphorus (P) limitation on most tropical and temperate soils. Besides P
fertilizer management, soil type could significantly determine the efficiency of P use by specific crop species. In this
study, the influence of 0, 50, 100, 150 and 200 mg P2O5 kg-1 soil on the growth, P nutrition
and production of two fruit vegetables (hot pepper, Capsicum frutescens and okra, Abelmoschus esculentum) were
evaluated. The goal was to ascertain and compare P use efficiency by the crops on typical tropical soils (a medium acid, Oxic
Paleustalf and a slightly acid, Typic Paleudalf). Growth in height, number of leaves and leaf area as well as biomass
production, fruit yield, P content and uptake were determined. Increasing rates of P supply had insignificant (p<0.05)
effect on the growth of the crops on both soil types within the first four Weeks After Planting (WAP). Phosphorus at 50 mg
P2O5 kg-1 application level, however, produced the tallest pepper plants (27.0 cm) on the
Oxic Paleustalf after five weeks while it was the 150 mg P2O5 kg-1 level that produced the
tallest plants (40.0 cm) at the 6th week on the Typic Paleudalf. Soil available P values obtained after cropping increased
significantly with increasing rates of added P. Okra plants were more efficient in their use of P than the pepper plants on
the two soil types. It was evident that okra could be produced more successfully on soils with relatively low native or added
P compared with pepper.]]>Anonymous,200216225Alam, S.M., A. Latif and I. Zafar,200245117119Walkley, A. and I.A. Black,1934372938Fageria, N.K. and V.C. Baligar,19972012671277Hogh-Jensen, H. and M.B. Pedersen,200326969984Bray, R.H. and L.T. Kurtz,1945593946Day, P.R.,19659545567Murphy, J. and J.P. Riley,1962293136Kadiata, B.D. and K. Lumpungu,20032610091022Ahmad, N., M.T. Saleem and I.T. Twyford,19921992pp: 5992Jones, U.S.,19822nd Edn.,pp: 421pp: 421Anonymous,1991452444