Ohio State University Extension Bulletin

Agronomic Crops Team On-Farm Research Projects 1998

Special Circular 166-99


Soybean Inoculant Trial

David Jones, Extension Agriculture and Natural Resources Agent
Loren Creeger, Allen County Producer
Ed Lentz, Extension Agronomy Specialist
Phil Rzewnicki, On-Farm Research Coordinator

Objective

The objective of this trial was to examine the performance of a new soybean inoculum product on a farm in Allen County.

Nearest Town:Lima Tillage:No-Till
Variety:DeKalb 370RR Previous Crop:Corn
Planting Date:5/23/98 Herbicide:Two post applications 1 pt.
Seeding Rate:170,000 Roundup 30 days apart
  Harvest Date:10/14/98

Methods

A new pre-mixed, humus-based inoculant containing a USDA-patented strain of Rhizobium with sticking agent was compared to not using any inoculant. Producer used four replications with each strip plot being 40' by 1140' in size. Harvest data were taken from each 1.05-acre strip. The experiment design was complete block without randomization.

Results

No Inoculum Yield42.0 bu/acre
Inoculum Yield42.2 bu/acre
 
F = 0.06 No significant difference between treatment means at P = 0.05 CV = 2.7%

Summary and Notes

The inoculum treatment did not significantly increase yields. Experimental error was well controlled as indicated by the low coefficient of variation.

For additional information, contact:
David Jones
Ohio State University Extension, Allen County
219 W. Northern Avenue
Lima, OH 45801
Jones.40@osu.edu

Acknowledgement

This project was funded in part from funds made available from the Ohio Soybean Council.


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