Early chips varieties: such as Sinora, Première, Amora, Miranda, Primavera, Anosta
If you have a contract with a weekly price scale, it is clear that an early crop is 10-14 days.
If you take your seed potatoes early, you will pay an autumn price.
This price difference is equal to the depreciation cost of Pre-Germination System Joppe.
Pre-germinating late fries varieties (such as Fontane, Agria, Innovator, Markies, Challenger, Santana, King Russet, Donata, Zorba, Babylon, Lady Amarilla) has several advantages:
Rapid initial development gives you a longer growing season and higher kg. yields
By breaking off the top sprout from your seed potatoes (e.g. via box turner, Carvon or ethylene),
you will get more sprouts and can expect a higher number of tubers.
If you then allow the extra sprouts to harden off properly, you will get the advance with it.
Higher number of tubers gives more competition between them.
This gives less greenery, hollowness and grub damage.
Pre-germination gives a more natural die-off.
As a result, your potatoes have on average 10-15 points higher underwater weight.
Haulm death is also easier as a result.
All this, of course, with an appropriate, not too high N-fertilisation.
Good pre-germination gives a growth lead and a more even emergence.