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Organic Lettuce Seeds::Organic Red Leaf Lettuce::Antago Lettuce
Organic Red Leaf Lettuce Comparison Chart
| Item Code |
Variety Name |
Disease
Resistance |
DTM:
Baby Leaf |
DTM:
Full Size |
Bolt
Tolerant |
Standout Characteristics |
| 2575 |
Lovelock |
DM (races 1-26),
LMV MTO-30 |
|
48 days |
● |
Batavian type, whorls of bright green, heads are crisp and dense |
| 2564 |
Magenta |
DM (races 1-16, 19, 21),
LMV MTO-10 |
|
48 days |
● |
Batavian crisp type, green heart, excellent shelf life, does well in cool and wet seasons |
| 2564P |
Magenta Pelleted |
DM (races 1-16, 19, 21),
LMV MTO-10 |
|
48 days |
● |
Batavian crisp type, green heart, excellent shelf life, does well in cool and wet seasons |
| 2604 |
Red Tide |
TB, BR MTO-10 |
28
days |
48 days |
|
heavyweight full-sized head, dark green leaves with red margins, more upright when planted closely |
| 2604P |
Red Tide Pelleted |
TB, BR MTO-10 |
28
days |
48 days |
|
heavyweight full-sized head, dark green leaves with red margins, more upright when planted closely |
| 2608 |
Vulcan |
MTO-10 |
|
50 days |
|
slight Batavian characteristics: crisp and holds well on shelf, green interior, vibrant color |
| 2588 |
Antago |
DM (races 1-23, 25) MTO-30 |
30
days |
53 days |
● |
improved Lollo Rossa, well suited for low light conditions, uniform heads, smoother leaf margin |
| 2590 |
Dark Lollo Rossa |
|
30
days |
55 days |
● |
Italian loose-leaf, tightly curled leaves, bright green center, provides good loft and color in mixes, open and compact heads, slow growing for a full size head, mild flavor |
| 2594 |
New Red Fire |
TB, BR, DM MTO-10 |
|
55 days |
● |
uniform, large and loose heads are green at base, flavor is fresh all season |
| 2594P |
New Red Fire Pelleted |
TB, BR, DM MTO-10 |
|
55 days |
● |
uniform, large and loose heads are green at base, flavor is fresh all season |
| 2601 |
Red Sails |
MTO-10 |
29
days |
55 days |
● |
good at any size, nice texture and sweet flavor, doesn't get bitter in heat, doesn't stand up to washing and banding as well as New Red Fire |
| 2593 |
Galactic |
LD, DM (races 1-6) MTO-10 |
30
days |
58 days |
● |
very dark red, glossy leaves with a little green at base, excellent in mixes but can be bitter at full size |
Disease Resistance
APH Aphids
BR Bottom Rot
CR Corky Root
DM Downy Mildew (race specified if known)
LD Lettuce Drop, White Mold, Sclerotinia
LMV Lettuce Mosaic Virus
MTO-10, MTO-30 indicated that 0 seeds out of 10,000 or 30,000 seeds have tested positive, respecively (aphid resistant varieties are bred to reduce the spead of LMV from other crops or non-resistant varieties)
TB Tip Burn
Organic Lettuce - Growing and Seed Saving InfoPrintable version of this page
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Lettuce
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Lettuce (Latuca sativa) is cool season annual
in the Compositae family, which
includes endive, escarole, chicory, globe artichoke, sunflower, Jerusalem
artichoke, salsify, and burdock.
- Looseleaf- var.crispa. First to maturity, these fast growing lettuces
do not form a head. Good for babyleaf
culture.
- Butterhead - also known as bib, or Boston, this type forms a loose head with
slightly oily leaves. Beautiful, sweet and tender, but bruises and tears
easily.
- Romaine var.longfolia. Romaine forms a tall dense upright head
with a tender heart. It tolerates warm temperatures and is less prone to
bolting.
- Iceberg var. capitata. The fussiest type to grow, iceberg will
form a compact round head if given a long cool season. It bolts easily if
stressed.
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Soil Requirements
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Choose
cool, well drained, loose soil with pH 6.2-6.8. Lettuce is sensitive to low
pH. Use 50-75lbs Nitrogen/acre, ~150
Phosphorus and Potassium/acre. Sidedress with N 3-4 weeks after planting.
With transplanting, use 2lbs/50 gallons starter fertilizer, 4-8oz per plant.
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Position
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Full sun
to partial shade
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Seeding Depth
|
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1/8,
seeds require minimum amount of light for germination.
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Seeding Rate
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Babyleaf
- ~60 seeds/ft, in 2 bands. Full size - ~3 seeds every 8-10.
|
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Plant Spacing
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Babyleaf
continuous band. Full size 8-12
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Row Spacing
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Babyleaf
- Ύ between bands, 16 rows/36 bed. Full size - 12-18 or 3 rows/36 bed, 5
centers.
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When to Sow
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Lettuce
can be seeded in the spring as soon as the soil can be worked. Days to
maturity are from direct seeding in spring conditions, subtract 10-14 days if
transplanting, subtract 7-10 days if planting in summer conditions, add 20
days if planting late summer-fall In certain areas, lettuce can be grown
throughout the summer by choosing varieties which are heat tolerant; however,
many lettuce varieties have difficulty germinating in soils above 75°F.
Start transplants 3-4 weeks before setting out. Sow seeds 4 per inch in
flats or small-cell plug trays, barely covering with fine soil. If sowing
into flats, transplant 2 weeks later into plug trays, pots, or into another
flat at 1-2 apart.
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Other Considerations
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Harden
off seedlings by reducing water and temperature for 2-3 days before
transplanting.
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Frost Tolerant
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Choose
cold tolerant varieties to withstand light late-season frosts.
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Drought Tolerant
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Keep
moisture levels even. Drought stress can cause bolting.
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Heat Tolerant
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Choose
heat tolerant, bold-resistant varieties (such as Batavian types) for summer
plantings.
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Seed Specs
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24,000
seeds/oz avg. M= 1,000, MM=1,000,000
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Seeding Rate
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Baby Leaf
- 96M seeds/100 bed (~ 4 oz), 960M seeds/1,000 bed (2.5 lbs), 7.7MM
seeds/acre (~20 lbs), using ~960 seeds/ft, 16 rows/bed, 36 beds, 6 row
centers. Full Size - 360 plants/100 beds (~1/32 oz), 3,600 plants/1,000
beds (1 oz), using 10 spacing, 3 rows/36 bed, 5 center beds. 31M
plants/acre (~2 oz), using 10 plant spacing. These specifications are meant
to be general guidelines for the particular application as noted. They can be
loosely applied across the board for lettuces/mixes found in this section.
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Seed Coating /
Pelleting Info
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Some of
the varieties we carry receive an organic film coating applied to the seed,
which make the seed easier to see during planting.
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Harvest
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Cut lettuce
holds best when harvested in the morning and cooled rapidly. For salad
mix or baby leaf production, harvest individual leaves when they reach
desired size, or cut evenly across the bed making sure to stay above the
growing tip. For a continuous harvest, sow lettuce every 3 weeks.
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Storage
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Store
just above freezing temperatures with 98% humidity.
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Pest Info
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- Tarnished Plant Bugs cause
brown scarring on stems. Romaine is especially susceptible.
- Cabbage looper and cutworms
can be controlled by Bacillus thuringiensis (such as Dipel DF, see
Supplies) and/or spinosad (such as Entrust), preferentially in rotation
with one another to prevent selection of resistant individuals (check
with your certifier before applying).
- Leafminers burrow underneath
the skin and leave weaving, translucent trails. They are usually
controlled by natural enemies.
- Slugs and Snails can be
baited by beer traps. Practice clean cultivation and avoid mulch.
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Disease Info
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Many
lettuce diseases are best prevented by production practices that maximize
airflow around heads to stimulate rapid drying. Many varieties have been bred
to have disease resistance.
RESISTANCE
KEY:
DM: Downy Mildew (race specified, if known), TB: Tip Burn, WM: White Mold, BHR:
Bacterial Head Rot, BR: Bottom Rot, HS: Heat Stress, LMV: Lettuce Mosaic
Virus, APH: Aphids,
- Drop (Sclerotinia sclerotiorum,
also called white mold). Grow on raised beds, rotate crops with grass.
- Bottom rot (Rhizoctonia
solani). Select plants with upright growth habit. Take care not to set seedlings
too deep.
- Lettuce mosaic virus (LMV) is
highly seed-borne. Choose a reputable seed source. MTO-10, MTO-30: 10,000 or 30,000 seeds were tested for the
presence of Lettuce Mosaic Virus, none was found. A disease-free test
does not guarantee a seed lot to be disease-free, only that no pathogen
was detected in sample.
- Damping-off (caused by a
number of soil-borne fungi) Avoid overwatering when plants are young.
- Downy mildew (Bremia
lactucae)
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Seed Saving
Instructions
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Self-pollinated. Lettuce varieties will not cross
pollinate with each other even at short distances, but beware of any wild
lettuce which can cross with lettuce. Allow plants to "bolt" and
eventually flower. Under wet conditions lettuce plants may need to be covered
with a rain cover or grown in a greenhouse to prevent fungus from infecting
the plant and seed heads. Carefully shake the seedheads into a paper bag to
allow the mature seeds to be collected while leaving the immature seeds and
flowers to keep growing. Gather every few days until no more seeds remain.
Also, you can simply harvest the entire plant when about half of the seeds
are mature and allow the rest to mature inside by standing up the plants in a
box and on a cloth or tarp. Use an 1/8" screen to help with cleaning.
Lettuce seed can remain viable for 3 years under cool and dry storage
conditions.
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