Greener Journal of Educational Research

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Greener Journal of  Educational Research Vol. 3 (1), pp. 034-038, January 2013

 ISSN: 2276-7789 © 2011 Greener Journals

Research Paper

Manuscript Number: 10031274


Nitrogen Requirements of Amaranthus cruentus L. on Two Soil Types in Lagos State of Nigeria


Makinde E.A.


Department of Botany, Lagos State University, Ojo P.MB 0001 LASU Post Office

Email: leye_sam @


Soils from Ikorodu (Orthic Luvisol) and Lagos State University (LASU) Ojo campus (Dystric Fluvisol) were used in greenhouse experiments to determine N, 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, requirements for A. cruentus at Ikorodu and LASU were 45.0 and 67.5 kg N/ha-1 respectively.
Keywords: Orthic luvisol, Dystric Fluvisol , soil, nutrient uptake, yield

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