For information on insecticides and bee poisoning, see Chapter 1 and Chapter 2. For resistance management, rotate between insecticides from different chemical groups.
LEGEND: PHI = Pre-Harvest Interval (in days); — = not specified on label
Group Name
(Group #) Common Name Trade Name Rate PHI Notes LEAFHOPPERS
carbamate
(group 1A) carbaryl Sevin XLR 1.25–2.5 L/ha (0.5–1 L/acre) 5 Head lettuce only. Leafhoppers and aster leafhoppers.
21 Leaf lettuce, endive. Leafhoppers and aster leafhoppers.
organophosphate
(group 1B) malathion Malathion 85E (297–544 mL/acre)735–1,345 mL/ha 14 Leaf lettuce only. Aster leafhoppers.3 Head lettuce only. Aster leafhoppers. pyrethroid
(group 3A) cypermethrin Ripcord 400 EC (51 mL/acre)125 mL/ha 14 Lettuce only. Aster leafhoppers. Maximum 4 applications/season. 12-hr re-entry interval.
UP-Cyde 2.5 EC 200 mL/ha
(81 mL/acre) 14
neonicotinoid
(group 4A) thiamethoxam Actara 240SC (152–253 mL/acre)375–625 mL/ha — Soil application at or shortly following seeding or transplanting. Head and leaf lettuce and endive. Leafhoppers. Also suppresses early-season flea beetles. Use sufficient water volume or supplemental irrigation to ensure coverage at seeding or transplanting depth. Do not apply foliar group 4 insecticides (neonicotinoids) in the same season as an in-furrow, transplant or soil application. See label for rotational crop restrictions. 12-hr re-entry interval.
imidacloprid Admire 240 F 200 mL/ha
(81 mL/acre) 7 Foliar application. Head and leaf lettuce and endive. Suppression of leafhoppers
only. Do not apply foliar group 4
insecticides (neonicotinoids) in the same season as an in-furrow, transplant or soil application. Imidacloprid should not be used in areas treated with the product in the previous season. See label for rotational crop restrictions. Maximum 2 foliar applications/season. 24-hr re-entry interval.
not classified kaolin clay Surround WP 12.5–25 kg in 500 L water/ha
(5–10 kg in 45 gal water/acre) 0 Lettuce only. For early applications, use the higher rate per 500 L water. Surround WP forms a barrier film, which acts as a broad spectrum protectant that may decrease damage from aster leafhoppers.
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For information on insecticides and bee poisoning, see Chapter 1 and Chapter 2. For resistance management, rotate between insecticides from different chemical groups.
LEGEND: PHI = Pre-Harvest Interval (in days); — = not specified on label
Group Name
(Group #) Common Name Trade Name Rate PHI Notes LEAFMINERS
neonicotinoid
(group 4A) acetamiprid Assail 70 WP (35 g/acre)86 g/ha 7 Head and leaf lettuce and endive. Reduction in damage caused by pea leafminer only. Do not
apply more than once every 7 days. Do not apply foliar group 4 insecticides (neonicotinoids) in the same season as an in-furrow, transplant or soil application. Maximum 5 applications/season. 12-hr re-entry interval.
thiamethoxam Actara 240SC 375–625 mL/ha
(152–253 mL/acre) — Head and leaf lettuce and endive. Dipteran leafminers. Also suppresses early-season flea beetles. Soil application at or shortly following seeding or transplanting. Use sufficient water volume or supplemental irrigation to ensure coverage at seeding or transplanting depth. Do not apply foliar group 4 insecticides (neonicotinoids) in the same season as an in-furrow, transplant or soil application. See label for rotational crop restrictions. 12-hr re-entry interval.
cyromazine
(group 17) cyromazine Citation 75WP (76 g in 18 gal water/acre)188 g in 200 L water/ha 7 Head and leaf lettuce and endive. Pea leafminer only. See label for rotational crop restrictions.
Maximum 5 applications/season. 12-hr re-entry interval.
diamide
(group 28) cyantraniliprole Exirel (405–607 mL/acre)1–1.5 L/ha 1 Head and leaf lettuce and endive. Dipteran leafminers. Use high rate under heavy pest pressure. For optimum control of leafminers, use a spray adjuvant as stated on the Exirel label. See label for tank-mix and crop tolerance information. See label for rotational crop restrictions. Do not exceed 4.5 L/ha/season. Maximum 4 applications/ season. 12-hr re-entry interval.
LETTUCE
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Table 3–93. Lettuce and Endive Insect Control — Cabbage Looper, Brown Marmorated Stink Bug
For information on insecticides and bee poisoning, see Chapter 1 and Chapter 2. For resistance management, rotate between insecticides from different chemical groups.
LEGEND: PHI = Pre-Harvest Interval (in days) Group Name
(Group #) Common Name Trade Name Rate PHI Notes CABBAGE LOOPER
carbamate
(group 1A) methomyl Lannate TNG (0.2–0.4 kg/acre)0.51–1 kg/ha 7 Lettuce only. Maximum 3 applications/yr. 1-day re-entry interval for hand harvest, pruning and thinning. 12-hr re-entry interval for all other activities.
organophosphate
(group 1B) acephate Orthene 75 SP (228–334 g/acre)563–825 g/ha 7 Head lettuce only. Maximum 4 applications/season. 24-hr re-entry interval. Workers must wear gloves and cotton coveralls in the fields for 2 weeks after the re-entry interval.
naled Dibrom 1.05–1.6 L/ha
(0.4–0.65 L/acre) 4 Lettuce only. Maximum 2 applications/season. 48-hr re-entry interval. cyclodiene
organochlorine (group 2A)
endosulfan Thionex 50W
WSP (0.7 kg/acre)1.75 kg/ha 17 Head lettuce only. Maximum 2 applications/season. 4-day re-entry interval. pyrethroid
(group 3A) lambda-cyhalothrin Matador 120ECSilencer 120 EC (34 mL/acre)83 mL/ha 3 Head lettuce only. Maximum 3 applications/yr. 24-hr re-entry interval. spinosyn
(group 5) spinosad Success (74 mL/acre)182 mL/ha 1 Head and leaf lettuce and endive. Maintain a spray pH of 6 or greater. Maximum 3 applications/season. Re-entry permitted once spray deposit has dried.
Entrust 364 mL/ha
(147 mL/acre) 1
spinetoram Delegate WG 140–200 g/ha
(57–80 g/acre) 1 Head and leaf lettuce and endive. Use high rate for heavy infestations or large larvae. Maximum 3 applications/yr. 12-hr re-entry interval. biological
(group 11) Bacillus thuringiensis
subsp. kurstaki
Dipel 2X DF 275–550 g/ha
(111–222 g/acre) 0 Lettuce only.
Thuricide HPC 2–4.25 L/ha
(0.8–1.7 L/acre) 0
Bioprotec CAF 1.4–2.8 L/ha
(0.56–1.1 L/acre) 0
diacylhydrazine
(group 18) methoxyfenozide Intrepid (121–243 mL/acre)300–600 mL/ha 1 Head and leaf lettuce and endive. Apply at first sign of feeding damage or when infestations reach threshold levels as determined by monitoring. Use high rate for heavy infestations, advanced pest growth stages or larger crops. See label for rotational crop restrictions. Do not exceed 2 L product/ha/year. 12-hr re-entry interval.
diamide
(group 28) chlorantraniliprole Coragen (101 mL/acre)250 mL/ha 1 Head and leaf lettuce and endive. Maximum 4 applications/season. 12-hr re-entry interval.