50% of yield is determined at sowing.
Choosing to sow very high early vigor varieties eliminates the risk of crop stagnation and favors good planting and uniformity.
VIGOR PLUS is a stamp that is given to varieties that exhibit two criterias :
Good early vigour :
REDUCE EXPOSURE TO PESTS (birds, wire-worms)
MAXIMIZE DE POPULATION OF PLANT
RAPID COVERAGE OF THE INTER-ROW
Vegetative Homogeneity :
Plants are all in the same stage
Optimisation of the inter-row
Regularity during all the corn cycle (until the harvest)
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The VIGOR plus stamp is awarded to the most vigorous varieties by RAGT.
It follows a 3 years experimental evaluation in multiple pedoclimatic contexts on several seed lots.
The variety must meet the following three conditions:
- At least an average vigor of 105% over 3 years
- To be consistently superior to the trial average
- A minimum score of 100% in any one year.