Efficacy of Trichoderma harzianum, Poultry manure and Yeast on the Growth and Yield of Soybean Grown on Nematode Infested Soil

Abstract

Field experiments were carried out during 2010 and 2011 planting seasons in order to assess the effect of Trichoderma harzianum, cured poultry manure and palm wine yeast, singly and in combination, on the growth and yield of soybean, variety TGx 536-02D, grown on nematodes infested soil. The treatments were control, T. harzianum T22 isolate, cured poultry manure, palm wine yeast, T. hazianumT22 isolate + cured poultry manure, T. hazianumT22 isolate + palm wine yeast, cured poultry manure + palm wine yeast and T. hazianumT22 isolate + cured poultry manure + palm wine yeast. Control experiment did not receive cured poultry manure, palm wine yeast or T. hazianumT22 isolate. In each trial, there were 8 treatments replicated 5 times fitted into randomized complete block design. The results indicated that application of T.hazianumT22 isolate, cured poultry manure, palm wine yeast, T. hazianum + cured poultry manure, T. hazianum + palm wine yeast, cured poultry manure + palm wine yeast and T. hazianumT22 isolate + cured poultry manure + palm wine yeast significantly (p<0.05) increased the growth and yield of soybean, and also significantly (p<0.05) reduced the soil population dynamics of nematode pests of soybean. Prominent nematode genera were Meloidogyne, Xiphinema and Helicotylenchus. Control plants that were not treated with palm wine yeast, T. harzianum T22 isolate and cured poultry manure had significantly (p<0.05) reduced the growth and yield of soybean,and had increased soil nematode population. Data collected on both trials were analyzed using analysis of variance and significant differences among treatments were separated using Duncan’s multiple range test at probability level of 5%.

Keywords: Trichoderma harzianum; poultry manure; yeast; soybean; control; nematode.