Seed Discs

Monosem offers a larger variety of seed discs than any other planter manufacture on the market. Between NG Plus and MS we have over 345 different seed disc and counting! This allows us to provide a large range of seed spacing from .5” out to 84” for all different sizes of seed. We also offer double hill drop, triple hill drop, custom configurations, and blank disc to be drilled out. Our seed disc are a two-piece made up of a stainless-steel seed disc and a brass agitator. These materials (instead of plastic) help eliminate static electricity and the need for graphite, and more durable.

NG Plus Canola Disc
NG Plus Canola Disc
NG Plus Peanut Disc
NG Plus Peanut Disc
MS Seed Disc
MS Seed Disc
NG Plus Corn Disc
NG Plus Corn Disc
NG Plus 3 Hole DIsc
NG Plus 3 Hole DIsc
MS Double Row Disc
MS Double Row Disc
NG Plus dual hill drop
NG Plus Dual Hill Drop
NG Plus Blank Disc
NG Plus Blank Disc
MS Triple Hill Drop
MS Triple Hill Drop

Two Part Design

Monosem’s Seed disc are a two-part made up of a stainless-steel disc and a brass agitator. The agitator is fastened to the disc by 6 screws. Easily switchable from one seed disc to another or replaceable when worn. Seed Disc can be order individually or complete.

Two Part Seed Disc Design

Seed Disc Hole vs Spacing Chart

Number of Holes on Seed Disc Calculated Seed Spacing Number of Holes on Seed Disc Calculated Seed Spacing
3 28 1/2″ – 84″ 40 2 1/8″ – 6 1/2″
6 14 1/4″ – 42″ 48 1 3/4″- 5 1/2″
9 9 1/2″ – 28″ 60 1 3/8″ – 4 3/8″
12 7 1/8″ – 21″ 72 1 3/16″ – 3 1/2″
18 4 3/4″ – 14″ 90 15/16″ – 2 3/4″
24 3 1/2″ – 10 1/2″ 120 11/16″ – 2 1/16
30 2 3/4″ – 8 1/2″ 180 13/32″ – 1″
36 2 3/8″ – 7″

Seed Disc Part Number System

MONOSEM SEED DISC PN SYSTEM 1850

Monosem unique meter design allows our meter accurately singulate and plant almost all different type of seeds. Below is a list of crops planted with a Monosem. This list of crops continues to grow each year. Beside the crop name is the most common hole diameter of seed disc used.

Seed Disc Crop Hole Sizes

CROP Hole Size (mm) CROP Hole Size (mm) CROP Hole Size (mm) CROP Hole Size (mm)
ALFALFA 0.7 COLLARD GREENS 0.8 MILLET 1.0 ROMANO 3.5-4.5
ARTICHOKE 2.2 CORN 5.0 MUNG BEANS 3.5 RUTABAGA
ASPARAGUS 1.8-2.0 COTTON 3.5 MUSTARD 1.0 RYE 1.8-2.0
BANANA PEPPERS 1.2 CRANBERRY BEANS 3.5 NAVY BEANS 3.5 SAFFLOWER 2.0
BARLEY 1.8 CUCUMBERS 1.8-2.0 OKRA 2.2 SESAME 0.8
BASIL 1.0-1.2 DAHLIA ONIONS (FILM) 2.0 SHALLOTS 1.2-2.2
BEETROOT 2.0 DOUGLAS FIR ONIONS (PELLETED) 2.2 SNAP BEANS 4.5
BELL PEPPERS 1.2 FENNEL 1.5 ONIONS (RAW) 1.2 SOYBEANS 4.5
BLACK BEANS 3.5 FIELD PEAS 3.5 ORNAMENTAL CORN 2.5 SPINACH 1.8
BOK CHOY .08-1.0 GAI LAN PARSLEY 0.7 STOVIA
BROCCOLI 1.2 GARBONZO BEANS 6.5 PARSNIPS 1.2-2.0 SUGARBEETS 2.0
CABBAGE 1.2 GOURDS 2.5 PEANUTS 6.5 SUMMER SQUASH 2.5
CANNIBUS 2.0 GRAIN SORGHUM 2.2-3.5 PEAS 3.5 SUNFLOWERS 2.5
CANOLA 1.0-1.2 GUAYULE 2.0 PEPPERS 1.2 SWEET CORN 3.7
CANTALOUPE 2.0 HATCH CHILE PEPPERS 1.2 PICKLES 2.0 SWISH CHARD 2.5
CARROTS (PELLETED) 1.2 HEMP 2.0 PINE TREES 2.2 TEXAS BLUEBONNETS
CARROTS (RAW) 0.7 KALE 0.8-2.2 PINK BEANS 3.5 TOMATOES 1.0
CAULIFOWER 1.2 KIDNEY BEANS 6.5 PINTO BEANS 5.0 TURNIPS 0.8
CELERY LEEK 1.0 POPCORN 2.5 WATER MELONS 2.5
CHIA 0.6 LETTUCE (Film) 0.7 PUMPKINS 3.5 WHEAT 1.8
CHICKPEAS 5.0 LETTUCE (Pelleted) 2.2 RADISH 1.2-1.8 WINTER SQUASH 3.5
CHICORY 2.0 LETTUCE (RAW) 0.6 RAPESEED 1.2 YU CHOI SUM
CHILE PEPPERS 1.2 LIMA BEANS 5.0 RED BEETS 2.0 ZINIA
CHINESE CABBAGE 1.2 LUPIN 2.0 RHUBARB ZUCCHINI 2.5
CILANTRO 2.2-2.5 MARIGOLD RICE 1.6