Authors: J.O. AZEEZ
ISSN 1595-9694 © U AAB 2010 Journal of Agricultural Science and Environment
Abstract
The research investigated the dynamics of C, N, P and K under different Tithonia management options. Changes in soil Nand P showed significant increase in these nutrients in treatment with incorporated Tithonia + NPK and Mulched
Tithonia + NPK respectively. There was a reduction in the soil Kat 6 WAP In all the treatments except those with NPK and mulched Trthonia. Generally, there was a sustained Increase In soil organic carbon in all the treatments. There was an Increase In Nand P contents of maize plant with successive cycles thus indicating residual effect. Most pronounced in treatment with incorporated Tithonia + NPK. However, there IS the need for K supplementation at the second maize cycle, Maize biomass yield indicated the possibility of two cycles with mulched or Incorporated Tithonia + NPK fertilizers as most promising option. Economic feasibility should, however, be considered.