Vacuum Level Using Seed Disks H136478, H138722, A52390, A43215, A50617, A52391 or A105848

CQ269700-UN-27FEB12

CQ269710-UN-26DEC11

CQ269720-UN-26DEC11

BML002102-UN-11MAY20

A - Quantity of seeds per kg

B - Seed meter vacuum level in inches of water

C - Small seed

D - Large seed

E - Sunflower/corn and popcorn vacuum level (H136478 Disk)

F - Large sweet corn vacuum level (A52391 Disk) with double eliminator

G - Small corn vacuum level (A43215 Disk)

H - Standard corn vacuum level (A50617 Disk)

I - Small sweet corn vacuum level (A52390 Disk)

J - Peanut vacuum level (H138722 Disk)

K - High density soybeans vacumm level (A105848 Disk)

Use the information from the seed supplier to calculate the quantity of seeds per kg.

IMPORTANT: The correct vacuum level must be calculated for each crop type. Obtain value of seeds per kg through division of quantity of seeds in bag by weight of bag.

EXAMPLE:
In a corn bag with 60,000 seeds and a weight of 11,829 kg, divide the quantity of seeds contained in the bag by the weight in kg. Resulting in a quantity of 5072 seeds per kg, the vacuum level should be 11 inches when the large sweet corn disk is used (A52391). Shown in figures.

NOTE: Vacuum levels are the starting point for meter adjustment. It may be necessary to adjust again later to obtain the desired population.

Sticky seed treatments, rougher ground conditions and high ground speeds will require the vacuum level to be increased.

Select disk for small corn for initial adjustment. If the population is difficult to control, switch to the standard corn disk.