S. M. Afu

Response of Okra to Incorporating Humic Acid-Derived Active Molecules into NPK Fertilizer and Lime on Coastal Plain Sand in Calabar, Nigeria

S. M. Afu & E. A. Akpa · International Journal of Plant & Soil Science · 2019

This study evaluated the response of okra to NPK fertilizer with humic acid and lime at the University of Calabar, Teaching and Research Farm between October 2015 and January 2016 cropping season. The experiment was laid out in a randomized complete block design (RCBD) with four...

Open access Research Article 10.9734/ijpss/2019/v27i330079

Variability of Selected Physico-chemical Properties of Soil Overlying Different Parent Materials in Odukpani, Cross River State

S. M. Afu, I. A. Isong & E. E. Aki · International Journal of Plant & Soil Science · 2017

This research investigated variability among soil properties in soils overlying shale, sandstones and limestone parent materials. The result showed variability in percent sand, silt and clay content in both surface and subsurface soil. The texture ranged from clay, loam, sandy cl...

Open access Research Article 10.9734/IJPSS/2017/38317