E. A. Akpa

Evaluation of Saturated Hydraulic Characteristics and its Influence on Some Physical and Chemical Properties of Soils Developed on Coastal Plain Sands of Obufa Esuk Orok in Calabar, Cross River State, Nigeria

E. A. Akpa, A. I. Akpama & O. Oyedele · Asian Research Journal of Agriculture · 2021

The study highlights the evaluation of saturated hydraulic characteristics and its influence on some physical and chemical properties of soils developed on coastal plain sands of Obufa Esuk Orok in Calabar, Cross River State, Nigeria. Sixteen grids designed in an experimental plo...

Open access Research Article 10.9734/arja/2020/v13i430111

The Effect of Solid (Granular) and Liquid (Foliar) Fertilizers Application on the Growth and Yield of Maize (Zea mays L) in Soils of Obubra, Cross River State, Nigeria

E. A. Akpa & L. J. Agah · Asian Journal of Soil Science and Plant Nutrition · 2019

The research was carried out in the month of April, 2018 to determine the effect of solid (granular) and liquid (foliar) fertilizers application on the growth and yield of maize in soils of Obubra. Five (5) composite soil samples were collected at the depth of 0-20 cm for the ana...

Open access Research Article 10.9734/ajsspn/2019/v4i430053

Evaluation of Infiltration Characteristics of Soils Developed on Coastal Plain Sands in Calabar Municipality Local Government Area, Cross River State, Nigeria

O. Oyedele, E. A. Akpa & J. F. Akpan · Asian Journal of Advances in Agricultural Research · 2019

Infiltration of water into the soil is an important physical process affecting the fate of water under field conditions, especially the amount of subsurface recharge and surface runoff and hence the hazard of soil erosion. The study was conducted to evaluate the infiltration mode...

Open access Research Article 10.9734/ajaar/2019/v10i430036