Greener Journal of Agricultural Sciences Vol. 2 (6), pp. 289-293, October 2012
Manuscript Number: 10031274
Major Nutrients Requirement of Amaranthus cruentus L. on Two Soil Types in Lagos State of Nigeria
Department of Botany, Lagos State University, Ojo P.MB 0001 LASU Post Office.
Soils from Ikorodu (Orthic Luvisol) and Lagos
State University (LASU) Ojo campus (Dystric Fluvisol) were
used in greenhouse experiments to determine N, P and K
requirement of Amaranthus cruentus L. using five
rates of NPK 15:15:15 at 0, 150, 300, 450 and 600 kg ha1.
The experiment was arranged in a completely randomized
design with four replications. Soil treated with 300 and 450
kg ha-1 NPK 15:15:15 significantly (p<0.05) enhanced plant
height number of leaves shoot fresh and dry weight and plant
N-uptake compared to other treatments at Ikorodu.
Corresponding values were obtained from soil treated with
450 and 600 kg ha-I NPK 15:15:15 at LASU. Optimum N, P and K
requirements for A. cruentus at Ikorodu and LASU were 45.0
and 67.5 kg N/ha-1 respectively.
Key words: Orthic luvisol, Dystric Fluvisol, soil, nutrient uptake, yield.
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