\m    31   10   27    2  1 'Ants'
\m    45   14  112    2  1 'Aphids'
\m    64   21    6    2  1 'Armyworms'
\m    85   27   51    3  1 'Cabbage Loopers'
\m    99   32   27    3  1 'Corn Earworms'
\m   111   36   66    3  1 'Crickets'
\m   123   40   97    3  1 'Cucumber Beetles'
\m   141   46  121    4  1 'Cutworms'
\m   156   52    3    4  1 'Darkling Beetles'
\m   168   56   46    4  1 'Flea Beetles'
\m   197   65  107    5  1 'Grasshoppers'
\m   209   70   22    5  1 'Leafhoppers'
\m   223   75    4    5  1 'Leafminers'
\m   240   80   90    5  1 'Mites'
\m   257   86   16    6  1 'Shield Bugs'
\m   269   90   57    6  1 'Sowbugs'
\m   281   94   86    6  1 'Stinkbugs'
\m   293   98  119    6  1 'Sweet Potato Beetles'
\m   305  103   37    6  1 'Sweet Potato Hornworms'
\m   320  108   24    7  1 'Sweet Potato Weevils'
\m   358  122   10    7  1 'Tortoise Beetles'
\m   371  126   59    8  1 'White Grubs'
\m   384  131   52    8  1 'Wireworms'
\m   413  143    8    8  1 'Yellow-Striped Armyworms'
\t'November 1987'                                                 'IX Z-'
\a                  Dr. Freddie Johnson, Extension Entomologist
\a
\a                        INSECT CONTROL IN SWEET POTATOES

                  Dr. Freddie Johnson, Extension Entomologist
\h 1 'Ants'


                        INSECT CONTROL IN SWEET POTATOES


                                      Ants

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                5 B            20 - 40 lb             0
-------------------------------------------------------------------------------
\h 1 'Aphids'



                                     Aphids

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
malathion                       5 EC           2 1/2 - 3 pt           3

methyl parathion                4 EC           1 1/2 pt               5

parathion                       4 EC           1 pt                   15

rotenone + piperonyl            liquid         90 oz             see label
  butoxide (PB-Nox)
-------------------------------------------------------------------------------
\h 1 'Armyworms'



                                   Armyworms

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                5 B            20 - 40 lb             0

methoxychlor                    2 EC           2 - 4 1/2 qt           0
  (fall armyworm)

methyl parathion                7.5 EC         3/4 pt                 5
  (to 3rd instar)

parathion                       4 EC           1 1/2 pt               5
-------------------------------------------------------------------------------
\b\v
\h 1 'Cabbage Loopers'
\v
\v
\v
                                Cabbage Loopers

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
Bacillus thuringiensis          See individual labels

methyl parathion                7.5 EC         3/4 pt                 5
-------------------------------------------------------------------------------
\h 1 'Corn Earworms'



                                  Corn Earworms

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                XLR, 4F        1 - 2 qt               0
-------------------------------------------------------------------------------
\h 1 'Crickets'



                                    Crickets

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                5 B            20 - 40 lb             0
-------------------------------------------------------------------------------
\h 1 'Cucumber Beetles'



                                Cucumber Beetles

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                XLR, 4F        1 - 2 qt               0

ethoprop (Mocap)                10 G           30 - 40 lb        preplant
                                                                 (see label)

parathion                       4 EC           1 pt                   21
-------------------------------------------------------------------------------
\b\v
\h 1 'Cutworms'
\v
\v
\v
                                    Cutworms

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                5 B            20 - 40 lb             0

methyl parathion                4 EC           1 1/2 pt               5
  (surface and climbing)
-------------------------------------------------------------------------------
\h 1 'Darkling Beetles'



                                Darkling Beetles

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                5 B            20 - 40 lb             0
-------------------------------------------------------------------------------
\h 1 'Flea Beetles'



                                  Flea Beetles

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                XLR, 4F        1 - 2 qt               0

chlorpyrifos (Lorsban)          4 EC           4 pt              preplant,
  (systena and sweet potato                                      broadcast
   flea beetle)

endosulfan (Thiodan)            3 EC           1 1/3 pt               0
  (sweet potato flea beetle)

ethoprop (Mocap)                10 G           30 - 40 lb        preplant
                                                                 (see label)

fonofos (Dyfonate)              10 G           40 lb             preplant

methoxychlor                    2 EC           2 - 4 1/2 qt           0

methyl parathion                4 EC           1 1/2 pt               5
-------------------------------------------------------------------------------
\b\v
\h 1 'Grasshoppers'
\v
\v
\v
                                  Grasshoppers

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                XLR, 4F        1/2 - 1 1/2 qt         0
-------------------------------------------------------------------------------
\h 1 'Leafhoppers'



                                  Leafhoppers

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
malathion                       5 EC           1 1/2 - 2 pt           3

methyl parathion                4 EC           1 1/2 pt               5
-------------------------------------------------------------------------------
\h 1 'Leafminers'



                                   Leafminers

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
malathion                       5 EC           2 1/2 - 3 pt           3
  (morning glory leafminer)

methyl parathion                4 EC           1 pt                   5

parathion                       4 EC           1 1/2 pt               15
-------------------------------------------------------------------------------
\h 1 'Mites'



                                     Mites

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
malathion                       5 EC           2 1/2 - 3 pt           3

methyl parathion                4 EC           1 1/2 pt               5

parathion                       4 EC           1 1/2 pt              21
-------------------------------------------------------------------------------
\b\v
\h 1 'Shield Bugs'
\v
\v
\v
                                  Shield Bugs

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
methyl parathion                4 EC           1 pt                   5
-------------------------------------------------------------------------------
\h 1 'Sowbugs'



                                    Sowbugs

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                5 B            20 - 40 lb             0
-------------------------------------------------------------------------------
\h 1 'Stinkbugs'



                                   Stinkbugs

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
parathion                       4 EC           1 pt                   21
-------------------------------------------------------------------------------
\h 1 'Sweet Potato Beetles'



                              Sweet Potato Beetles

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
chlorpyrifos (Lorsban)          4 EC           4 pt              125
-------------------------------------------------------------------------------
\h 1 'Sweet Potato Hornworms'



                             Sweet Potato Hornworms

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
Bacillus thuringiensis          See individual labels

carbaryl (Sevin)                XLR, 4F        1 - 2 qt               0
-------------------------------------------------------------------------------
\b\v
\h 1 'Sweet Potato Weevils'
\v
\v
\v
                              Sweet Potato Weevils

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
PREPLANT DIP:
  carbaryl (Sevin)              80 S           9 tbsp/gal        just prior to
                                                                 planting dip
                                                                 cuttings in a
                                                                 suspension of
                                                                 this product

IN THE FIELD:
  carbaryl (Sevin)              XLR, 4F        1 - 2 qt               0
    (FULL COVERAGE OF PLANTS
     IS ESSENTIAL)

  carbaryl (Sevin)              80 S           1 1/4 - 2 1/2 lb       0
    (FULL COVERAGE OF PLANTS
     IS ESSENTIAL)

Other necessary management control tactics:

    1. Plant only certified weevil free slips or draws.  Vine cuttings are
       preferable to slips or draws.
    2. Rotate field plantings.  Plant new crops as far as possible from where
       potatoes were planted the previous year (1 mile or more is preferable).
    3. Throw the soil up high around the base of vines at each cultivation.
    4. Use varieties that develop deep beneath the soil surface.

Observations have also indicated where Thiodan has been used for flea beetle
control the sweet potato weevil has been less of a problem.
-------------------------------------------------------------------------------
\h 1 'Tortoise Beetles'



                                Tortoise Beetles

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                XLR, 4F        1 - 2 qt               0
-------------------------------------------------------------------------------
\b\v
\h 1 'White Grubs'
\v
\v
\v
                                  White Grubs

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
ethoprop (Mocap)                10 G           30 - 40 lb        preplant
                                                                 (see label)
-------------------------------------------------------------------------------
\h 1 'Wireworms'



                                   Wireworms

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
chlorpyrifos (Lorsban)          4 EC           4 pt              preplant,
  (Conoderus spp.)                                               broadcast
                                15 G           13.5 lb           preplant,
                                                                 broadcast

diazinon                        14 G           21 lb             broadcast at
                                                                 root enlarge-
                                                                 ment

ethoprop (Mocap)                10 G           30 - 40 lb        preplant
                                                                 (see label)

fensulfothion (Dasanit)         15 G           46.7 lb           preplant
  (southern potato wireworm)                                     broadcast
  (aids in reduction)

parathion                       10 G           20 - 40 lb        preplant,
                                                                 broadcast
-------------------------------------------------------------------------------
\h 1 'Yellow-Striped Armyworms'



                            Yellow-Striped Armyworms

-------------------------------------------------------------------------------
                                                                 Min. Days to
Insecticide                     Formulation    Rate/Acre            Harvest
-------------------------------------------------------------------------------
carbaryl (Sevin)                XLR, 4F        2 qt                   0
-------------------------------------------------------------------------------
