II. Spinach
Botany and Planting
Spinach - Spinacia oleracea
Table 9.3. Planting information for spinach.
Planting dates
North and Central Florida Sept - Mar
South Florida Oct - Feb
Planting information
Distance between rows (in) 12 - 36
Distance between plants (in) 2 - 6
Seeding depth (in) 0.5
Seed per acre (lb) 10 - 15
Days to maturity from seed 45 - 60
Plant population (acre) 261,136
Cultivars
Table 9.4. Spinach cultivars.
Smooth leaf
A&C #30 (H) Space (H)
Semi-savoy leaf
Chinook II (H) Gladiator (H)
Melody (H) Skookum (H)
Tyee (H) Ashley (H)
Seaside
Savoy leaf
Ambassador (H) Hybrid 612 (H)
H = hybrid
Table 9.5. Herbicides approved for managing weeds in lettuce. (continued)
Labels change frequently. Be sure to read a current product label before applying any chemical.
Active ingredient Trade name MOA
lb. a.i./A product/A code Crops Weeds controlled / remarks
*** PREEMERGENCE ***
(Balan) 3 Lettuce Annual broadleaf and grass weeds. Apply before seeding or transplanting.
1.2 2 lb.
Bensulide (Prefar) 4 E 8 Leafy vegetables Annual broadleaf and grass weeds. Incorporate with cultivation or
5.0 - 6.0 5 - 6 qt. irrigation. Do not use on spinach or Swiss chard.
Carfentrazone (Aim) 1.9 EW 14 Leafy vegetables Apply as a preplant burn down for emerged broadleaf weeds. Use crop oil
concentrate, methylated seed oil, or nonionic surfactant at recommended
rates. Maximum rate of 0.096 lb. a.i./A per season. No pretransplant
interval.
up to 0.031
(Aim) 2.0 EC
Glyphosate (various formulations) 9 Leafy vegetables Emerged broadleaf and grass weeds. Apply as a preplant burn down.
consult labels Consult label for individual product directions.
Imazethapyr (Pursuit) 2 EC 2 Lettuce, endive, escarole
apply more than 2 applications per crop. A maximum of 4 oz. of product
per acre per crop season. Should be applied in 2 or more gallons of water
per acre. Potential for rotational crop injury is highly variable. Label is
a Third-Party Registration (TPR, Inc.). Use without having a signed authorization
and waiver of liability agreement is a misuse of the product. PHI 30
days.
0.016 - 0.031
Paraquat (Gramoxone) 2 SL 22 Lettuce, endive, escarole Emerged broadleaf and grass weeds. Apply as a preplant burndown. Do
0.5 - 1.0 2 - 4 pt. not make more than 3 applications per year.
(Firestorm) 3 SL
1.3 - 2.7 pt.
Pelargonic acid (Scythe) 4.2 EC 27 Leafy vegetables Emerged broadleaf and grass weeds. Apply as a preplant burndown
3 - 10% v/v before planting.
Pronamide (Kerb) 50 WP 3 Head lettuce, endive, escarole Certain annual broadleaf and grass weeds. Overhead irrigate with 1 to 2
in. following applications. Observe rotational restrictions to other crops.
Not recommended for soils with high organic matter. PHI 55 days.
1.0 - 2.0 2.0 - 4.0 lb.
(ET Herbicide/Defoliant) 14 Leafy vegetables Emerged broadleaf weeds. Apply as a preplant burndown 1 day prior to
0.001 - 0.003 planting. Include an NIS at 0.25% or COC at 1.0% to the spray solution
3 Endive, escarole, radicchio Annual broadleaf and grass weeds. Apply as preplant incorporate to
0.5 1.0 pt. mineral soils only.
5 lb.
114 2019 Vegetable Production Handbook of Florida