Studies of factors affecting certain nematopagous hyphomycetes.

A major objective of the Agricultural Sciences is the utilization of' natural resources in such a manner that the effects of factors which reduce the yields of products useful to man, will be minimized. Although nematodes, as parasites of vertebrates and plants, have been recognized as significant factors in reducing agricultural production, they are themselves victims of a number of parasitic organisms. Struggle for existence is universal among living organisms regardless of their biological level, and this competitive relationship between nematodes and other organisms in their environments is by no means unique. Fungi, that prey upon or parasitize microscopic animals, are usually referred to as predacious fungi