2000 Precision Concept Research
SuperCal SO4, versus Cal-SUL Broadcast on Soybeans
The Bottom Line
With treatment cost approximately the same, SuperCal SO4 gave an economic yield advantage over Cal-SUL at both the 300 lbs/A and 500 lbs/A application rates. SuperCal SO4 gave a 4.8 bu/A at 300 lbs/A and 8.3 bu/A at 500 lbs/A advantage over the control.
Statistics
The Duncan's multiple range test (DMRT) as shown on page 8, is used to determine if significant differences have occurred between treatments. This test indicates statistical separation between SuperCal SO4 at both the 500 Ibs/A and 300 lbs/A as compared to the control.
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DUNCAN'S MULTIPLE RANGE TEST (DMRT) -------------------------------------------------------------------------------- A statistical evaluation of the studies was conducted using the Duncan's Multiple Range Test (DMRT). The DMRT allows you to evaluate statistical differences between treatments and the probability that those differences are real and not due to chance. The ninety-five percent level of confidence was used. If treatments are significantly different, they will be followed by different letters (a, b, c). This means that ninety-five percent of the time, under similar parameters, these differences among treatments should occur. |
2000 SuperCal SO4 Soil Analysis Report1
| Organic Matter |
Phosphorous |
Potassium |
Magnesium |
Calcium |
Soil pH |
| P1 |
P2 |
| 3.07 |
30.4 |
53.1 |
195.5 |
402.6 |
19.18 |
6.2 |