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Head-to-Head Comparison of Soybean Inoculants in 2002


Average Yields from Belwood (no-till) and Rockwood (conventional tillage)
Conducted by the University of Guelph

Treatment

Yield
(kg/ha)

% Yield Increase
over Control

Pulse*R HP (slurry)

2633 a*

30%

Cell-Tech 2000 (liquid in-furrow)

2598 ab

28%

SoySelect

2594 ab

28%

Cell-Tech 2000 (liquid on-seed)

2586 ab

27%

Nodulator (Granules in-furrow)

2583 ab

27%

APEX Liquid (in-furrow)

2565 ab

26%

Patrol Liquid (in-furrow)

2550 ab

26%

HiStick L (liquid on-seed)

2546 ab

25%

HiStick L (liquid in-furrow)

2540 ab

25%

Soil Implant (Granular in-furrow)

2518 ab

24%

APEX Liquid (on-seed)

2500 ab

23%

HiCoat (preinoculated seed)

2493 ab

23%

Patrol Liquid (on-seed)

2492 ab

23%

Sow-Fast

2457 ab

21%

HiStick +

2411 bc

19%

Nitragin S (2X)

2248 c

11%

Uninoculated Control

2031 d

 

* Values followed by the same letters indicate no significant yield difference
Note: Rankings have been removed from the table because they didn't reflect any statistical differences.

These trials were planted in fields which had not grown soybeans previously. Most inoculants were applied at label rates. However, the non-sterile peat inoculant was applied at 2X label rate.

Drought reduced yields and responses to inoculation, especially in the Rockwood trial, this year.

Means followed by the same letter are not statistically different, at the 5% level, from one another. Growers should choose inoculants based on cost and convenience, as well as potential yield response.

 

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