1993 Volume 62 Issue 3 Pages 351-358
We investigated the ecology and utilization of VA-mycorrhizal fungi in raising soybean plants (Glycine max (L.) Merrill, cv. Enrei). VA-mycorrhizal infection increased the accumulation of phosphoric acid contents at the 50th day after emergence. It was important to satisfy the environmental condition for improvement of the growth and yield by infection of VA-mycorrhizal fungi. Application of superphosphate and ensuing increase of available phosphoric acid decreased mycorrhizal infection rate and spore numbers. It will be diffecult to use of soil phosphoric acid by application of fertilizer of phosphoric acid in soybean culture.
