Legend to tab “Leptosphaeria maculans”

Application of POLYVERSUM
Seed dressing – dry Seed dressing 2000g per ton of seed
1x spray 100g/ha
2x two sprays 100g /ha
3x three sprays 100g/ha
DAM 120 l of nitrogen liquid fertilizer per hectare in first treatment

Chemical treatment
VITA - seed dressing with Vitavax 200 FF - 4 l/t
Sprays:
ROV - Rovral – 1.5 l/ha
CAR - Caramba – 1.5 l/ha
HOR - Horizon – 1.5 l/ha
Atonik – 0.6 l /ha

Red written values are up the chemical reference.
Green written values are under the chemical reference.
Blue written values are under the chemical reference, but with efficiency up 50 %.
Purple written values show efficiency of referential preparation.

Comments:
Testing of preparation POLYVERSUM was done in 10 trials a preparation was compared with fungicides Rovral, Caramba, Horizon, Vitavax 200 FF. Mentioned preparations were applied to winter and summer canola in combination with plant growth stimulator Atonik as states in tabs.
Polyversum was applied 48 times.
In 30 cases was reached better evaluation than by reference fungicide treatment.
In 7 cases was efficiency of Polyversum higher than 50 %, but lower than efficiency of chemical preparations.
In 11 cases were results of tested biopreparation worst than chemical standard.

The preparation was applied in one, two or three terms – growth stages of canola.
First treatment in stages (BBCH) 18 -25
Second treatment in stages (BBCH) 30 - 38
Third treatment in stages (BBCH) 45 – 60

Application is fully in correspondence with recommendation of manufacturers of referential fungicidal standards. (BBCH 11-32 and 32- 60)

Infection ascends in time of observations from low to medium pressure.

Gained values are seemingly non-homogenous. That is reason, why was calculated correlation coefficient between group treated with chemical fungicides and between group treated with Polyversum. Because value of this coefficient is 0.886 is correlation between both groups very tight.
(Tab value for a 0.005 – 16 terms is 0.6622). Low values by both groups are caused of other events than is tested preparation. This fact confirms contradictory phenomenon – High efficiency in both assessed files in the same locality. These phenomena - high or low efficiency – are identically influenced either by force of infection, climatic conditions in specific locality or condition of the crop. In the case of occurrence and development of pathogen, the both groups show high efficiency.

From above results, that efficiency of preparation Polyversum is comparable with chemical standards- this is documented by statistical cogency – and is influenced by instantaneous condition of environment as well as artificial fungicides.

As the best method of application appear two or three sprays.
First treatment in stages (BBCH) 25 – 30
Second treatment in stages (BBCH) 35 – 45
Third treatment in stages (BBCH) 45 - 55