Abstract: The effects of neem leaves and poultry manure soil amendments on the changing trends of some plant-parasitic nematodes were determined in pots under field conditions for 12 weeks. Populations of Meloidogyne, Scutellonema, Pratylenchus and Paratrichodorus decreased with time in all the amendments and the unamended soil. Numbers of nematodes were, however, significantly lower in the amended soil than the unamended soil. The neem based amendments were the most suppressive, recording zero nematode numbers at the end of the study. The application of neem products as soil amendment on fallow land may significantly reduce the numbers of plant-parasitic nematodes before subsequent cropping.