RESIDUAL EFFECTS OF PSEUDOMONAS AND KLEBSIELLA SPECIE

ABSTRACT

This experiment was conducted in the University of Benin Teaching and Research Farm (UBTRIP) to determine the residual effect of Psuedomonasand klebsiella spp phosphorus availability for maize (Zea mays) cultivation in a poultry manure amended soil. The experimental site was a previously  established field and maintenance was carried out on it manually by clearing of vegetation with hand machetes. The experimental fields was laid out in a Randomized Complete Block Design (RCBD); The treatments used for the experiment were, T1= Soil + Poultry Manure (PM) + Bacillus spp and T2= Soil + PM + Pseudomonas spp;The maize plant parameters measured were; number of leaves, plant height, leaf area and stem girth. It was observed from the plant parameters analysized that there was no significant difference between the treatments T1 and T2 from week two to week eight except for yield. Results obtained from the experiment showed that the treated soils recorded low values of Organic C (T1 8.70 and T2 8.80), N(T1 0.80 and T2 0.93), Ca(T1 0.71 and T2 0.99), K(T1 0.32 and T2 0.38), Mg(T1 0.05 and T2 0.40) and Na(T1 0.17 and T2 0.16) before the sowing. However, the concentration of these nutrients in the soil decreased in amount as the time of the experiment progressed till termination except for Mg and CEC which recorded an increase. There were no observable changes in the soil textural class throughout the experimental period.