PAPER TITLE :NORTHERN GUINEA SAVANNA EDAPHIC PROPERTIES AND NUTRIENTS COMBINATION IMPACT ON MAIZE MYCORRHIZAL COLONIZATION AND BIOMASS YIELD

APPLIED TROPICAL AGRICULTURE | VOLUME 22 NUMBER 1 2017

Paper Details

  • Author(s) : Adewale, B.D. and Odoh, N.C.
  • Abstract:

The variability in soil properties informs the need for verification of their potential suitability for continuous cropping. A
maize variety (Oba super 1) was evaluated for biomass yield and root colonization by Arbuscular Mycorrhizae Fungi
(AMF) in a screen house at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. Soil samples were
collected from six farmers’ fields within Northern Guinea Savanna of Nigeria and seven nutrients formulation were applied
to each sample. The replicated experiment was laid out in a split plot design with soil in the main plot. There was
significance (P ≤ 0.05) among the soil samples from six farmer’s field and the seven nutrient combinations. Soil and
nutrient combination differed significantly (P ≤ 0.05) for shoot biomass yield and AMF colonization. Soil from field 5 with
loam textural characteristic gave the significantly (P ≤ 0.05) highest shoot (20.17 g/plant) and root (5.26 g/plant)
biomasses but the same had the lowest significant (P ≤ 0.05) AMF colonization of 39.86%. Stability variance identified in
soils from fields 1 (loam), 2 (loam), 3 (loam) and 5 (loam) to be more stable in the support for shoot biomass and AMF
colonization. Porosity and un-enhancement of the soils favored AMF root colonization while amendment of the soil with
nutrient improved the biomass yield of maize. Inherent physical properties of the soil are primary determinants of its
variability in response to alien factors.
Key words: AMF, Nigerian savanna, nutrient interactions, Oba super 1, rhizosphere, soil fertility