02112naa a2200277 a 450000100080000000500110000800800410001910000160006024501640007626000090024052012790024965000150152865000170154365000130156065300270157365300110160065300260161165300290163765300240166665300140169065300100170465300490171470000190176370000170178277300350179916342281996-01-31       1995    bl uuuu     u00u1 u    #d1 aOSONUBI, O.  aThe effect of vesicular-arbuscular mycorrhizal inoculation on nutrient uptake and yield of alley-cropped cassava in a degraded alfisol of southwestern Nigeria.  c1995  aLeaf ant root (tuber) nutrient uptake patterns of cassava (Manihot esculenta Grantz) alley-cropped with gliricidia (Gliricidia sepium), leucaena (Leucaena leucocephala), and senna [Senna (syn. Cassia) siamea] as influenced by vesicular-arbuscular micorrhizal (VAM) inoculation in a degraded Alfisol were investigated in 3 consecutive years. The cassava plants were mulched with fresh prunings of each hedgerow tree species at 2-month  intervals in the second and third years of alley cropping. While VAM inoculation significantly influenced the root uptake of nutrients, the leaf uptake was not affected except for the uptake of P. In most cases, there was not dofference in the nutrient concentration between inoculated and uninoculated plants, either in the leaf or  in the root, indicating that the productivity of cassava was regulatedbu the amount of nutrients the roots could absorb. In spite of similar total soil N in all inoculated and uninoculated alley-cropped cassavaplots and similar exchangeable soil K contents in inoculated and uninoculated alleycropped cassava plots with leucaena and senna, greater uptake of N, P, and K and grater concentrations of K were observed in roots of inoculated alley-cropped cassava with gliricidia and leucaena than with senna.  aExtração  aInoculação  aMandioca  aAlley-cropped casssava  aFungos  aHedgerow tree legumes  aManihot esculenta Crantz  aNutrient extraction  aNutrientw  aSolos  aVasicular-arbuscular mycorrhizal inoculation1 aATAYESE, M. O.1 aMULONGOY, K.  tBiol fertil soils, 70-76, 1995