This summer a client of ours started a field trial with pumpkins in Southern Arizona. The trial was done at a farm in San Simon, Arizona. The fields are irrigated with drip irrigation. Activated EM•1® was used in conjunction with conventional fertilizer, humate, and micronutrients. Three applications of Activated EM•1® were applied to total 40 gallons in the soil. No product was applied foliarly.
The only difference between the Activated EM•1® plot and the control was the addition of Activated EM•1®. Final yields were 45 boxes per acre on the control and 54.52 boxes per acre on the Activated EM•1®-treated plot. The observations from the soil and plant tissue analysis are as follows:
1. Organic matter increased with Activated EM•1® (from 1.02 on 5/13/10 to 1.25 on 7/26/10)
2. pH decreased with Activated EM•1® (from 7.8 on 5/13/10 to 7.6 on 7/26/10)
3. N-P-K increased with Activated EM•1® (from
Nitrate NO3 36.95ppm on 5/13/10 to 76.35ppm
Phosporous 19.8mg/kg on 5/13/10 to 21.1 mg/kg on 7/26/10
Potassium 44ppm on 5/13/10 to 82ppm on 7/26/10
4. Powdery mildew was less severe with Activated EM•1® use.
Soil Analysis:
Nutrient | Initial Soil Test | 40 gal AEM1 | No EM1 | Units | Difference |
Ca | 11.5 | 29.5 | 3.15 | meq/L | -8.35 |
K | 44 | 82 | 36 | ppm | -8 |
Mg | 2.73 | 6.62 | 0.85 | meq/L | -1.88 |
NO3 N | 36.95 | 76.35 | 41.3 | mg/Kg | 4.35 |
P | 19.8 | 21.1 | 16.2 | meq/L | -3.6 |
Na | 26.2 | 31.2 | 17.8 | meq/L | -8.4 |
Sulfate | 28.32 | 46.81 | 11.69 | meq/L | -16.63 |
SAR | 9.82 | 7.34 | 12.59 | 2.77 | |
EC Soil | 3.78 | 5.28 | 2.09 | mmhos/cm | -1.69 |
Organic Matter | 1.02 | 1.25 | 0.94 | percent | -0.08 |
pH | 7.8 | 7.6 | 8 | 0.2 |