Plug size should be 2’’
wide x 2.5’’ deep and square.
Soil should be a sandy
loam mixed with a 50% medium vermiculite.
During the growth cycle
plugs should be kept damp at all times. Foliar applications of ½ to 1% solution
of 10/20/10 with complete micro nutrients and calcium are recommended. At the
end of the growth cycle the transplants root zone should be 90% full. When the
transplants are ready and before being set out into the field they should be
hardened off under 50% shade clothe for 4-8 days.
TRANSPLANT ROW AND PLANT SPACINGS
Plugs should be set into
flat soil (not hills) and bottom covered 50%.
Center to center on beds
should be 30’’ with single rows. Single rows should be planted out at every
6-10’’ plant to plant. A reasonable plant population should be 45,000 per
manzana on an average plant spacing of 8’’.
DIRECT SEED ROW AND PLANT SPACING **
Potatoes should be
direct seeded on the flat or on flat beds. Center to center on beds should be
30’’ with single rows. Single rows should be planted out at every 2 ½ to 4’’. A
reasonable plant population per manzana should be 90,000 on an average plant
spacing of 4’’.
Please note that irrigation and fertilizer applications increase considerable
with direct seeding and although the plant population is doubled with direct
seeding the harvestable size of the potatoes does not make a sizeable
difference when proper cultural practices and expertise are applied.
Over the course of the
growth cycle 150 units of NPK should be applied for transplants and 200 units
for direct seed. Fertilizers can be applied in simple band form with banding
with granular 1-2’’ from the root zone. The last application of fertilizer
should be applied 5 weeks before vinekill.
Potato plants should at
all times have a 30-50% bottom cover with soil with the plants being 15-20’’
tall at vinekill 120-140 days after seeding.