Pest Management Guidelines - Vegetables
Pest Management Guidelines
A Cornell Cooperative Extension Publication

  
Cornell Guide for Pest Management of Vegetables

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Chapter 12 Asparagus

Chapter 22    Peppers

Contents

22.1 Recommended Varieties. 231

22.2 Planting Methods. 232

22.3 Fertility. 232

22.4 Harvesting. 233

22.5.1 Anthracnose fruit rot, Colletotrichum gloeosporioides, C. capsici, and C. coccodes. 234

22.5.2 Bacterial leaf spot, Xanthomonas campestris pv. vesicatoria. 235

22.5.3 Bacterial soft rot, Erwinia carotovora. 235

22.5.4 Damping-off caused by Phytophthora spp., Pythium spp., and Rhizoctonia solani 236

22.5.5 Nematodes (Primarily Northern root-knot nematode) 237

22.5.6 Phytophthora blight, Phytophthora capsici 237

22.5.7 Seed rot and damping-off 238

22.5.8 Cucumber mosaic virus (CMV) transmitted by aphids. 238

22.5.9 Tomato spotted wilt virus (TSWV) transmitted by thrips. 238

22.6 Insect Management 240

22.6.1 Aphids, Primarily the green peach aphid, Myzus persicae. 240

22.6.2 European corn borer (ECB), Ostrinia nubilalis. 240

22.7 Weed Management 241

22.8 References. 242

 

22.1 Recommended Varieties

Listed in approximate order of maturity within each type.

                                                                          Pest Tolerance

Type                                Mature color1       BLS2         TMV3

 

Bell

    Red Knight                              R                  1,2,3             -

    Merlin                                      R                      -                H

    Conquest                                R                                      -

    King Arthur                             R                      2               H

    Ironsides                                 R                  1,2,3             -

    Early Sunsation                      Y                  1,2,3             -

    Lexington                               R                  1,2,3             -

    Valencia                                  O                                     M

    Lafayette                                 Y                  1,2,3             -

    Aristotle                                  R                  1,2,3             -

    Boynton Bell                           R                  1,2,3            

    Bell Captain                            R                                     M

    Paladin4                                   R                      -                -

    X3R Aladdin                           Y                  1,2,3            H

    X3R Sir Galahad                     R                  1,2,3             -

    X3R Camelot                           R                  1,2,3            H

    X3R Wizard                             R                  1,2,3            H

    Legionaire                               R                  1,2,3             -

    Commandant                         R                  1,2,3            H

    Bell Tower                               R                                     M

 

Frying

    Key Largo                             O-R                                   

    Cubanelle                             Y-O                                   

    Sweet Banana                       Y-R                                   

 

Hot

    Eastern Rocket                     Y-R                    -                -

    Surefire                                    Y                                     

    Hungarian Wax                    Y-R                                   

    Jalapeno                               G-R                                   

    Habanero                             G-O                    -                -

1: G = green; O = orange; R = red; Y = yellow

2: BLS = Bacterial leaf spot race 1, 2, or 3 resistant; when disease tolerance for a particular variety is unknown, line is left blank.

3: TMV = Tobacco mosaic virus; L = low, M = moderate, and H = high level of tolerance to pest. When disease tolerance for a particular variety is unknown, line is left blank.

4: Phytophthora resistant


22.2 Planting Methods

 

Peppers are relatively slow to emerge and need protection from soilborne diseases. Use a sterilized growing medium and seed treated with a suitable fungicide. The daytime temperature for producing transplants should be about 75°F and nighttime temperature about 65°F. Flats with 72 to 128 cells are commonly used. A two inch by two inch cell size is recommended for early production.

 

Plants are usually set in the field when they are six to eight weeks old and four to eight inches tall. A few days at 60° to 65°F or reduced water application will help to harden the plants and prevent transplant shock. Overhardened plants will grow slowly in the field. Transplants should not be set in the field until the danger of hard frost is past, usually after mid-May. Growers using row covers and those on Long Island may plant seven to ten days earlier. The use of black plastic mulch with drip irrigation and double rows can greatly increase yields and quality, provide weed control without herbicides, and reduce disease pressure because the fruit and foliage are not wetted as with sprinkler irrigation.

 

Table 22.2.1 Recommended spacing.  

Row type

Row(in inches)

In-row(In inches)

Single

48-60

12

Double

151

14-18

1: Center to center beds should be 5-6’ apart. Plants should be staggered.

 

22.3 Fertility

 

Use lime to maintain a pH of 6.0 to 6.5. Starter solution may be beneficial. See Tables 22.3.1 and 22.3.2 for the recommended rates of nitrogen, phosphorus, and potassium.


 

Table 22.3.1 Recommended nutrients based on soil tests for transplants in plastic mulch with fertigation.

N pounds/acre

P2O5 pounds/acre

 

K2O pounds/acre

Comments

 

Soil Phosphorus Level

 

Soil Potassium Level

 

 

low

med.

high

 

low

med.

high

 

125

150

100

75

 

150

100

75

Total recommended

 

 

 

 

 

 

 

 

 

50

75

25

0

 

75

25

0

Broadcast and disk-in.

15

15

15

15

 

15

15

15

Apply 1 week after transplanting and every 3 weeks for 5 applications.

 


 

Table 22.3.2 Recommended nutrients based on soil tests for transplants in bare ground.

N pounds/acre

P2O5 pounds/acre

 

K2O pounds/acre

Comments

 

Soil Phosphorus Level

 

Soil Potassium Level

 

 

low

med.

high

 

low

med.

high

 

90-150

150

100

50

 

150

100

50

Total recommended

 

 

 

 

 

 

 

 

 

50

150

100

50

 

150

100

50

Broadcast and disk-in.1

40-50

0

0

0

 

0

0

0

Apply when first clusters set fruit2

40-50

0

0

0

 

0

0

0

Apply only on light soils or in seasons with heavy rains.

1: If equipment is available, apply half of the phosphorus and potassium in bands 4” deep and 4” from the row at planting or drill deeply

after plowing.

2: Nitrogen can be applied as a split application. Apply half at fruit set and the rest when fruit are 1” in diameter.


 

22.4 Harvesting

 

Bell peppers are harvested by hand usually at the green stage but after fruit reach full size and walls are thick and firm. Peppers may be picked twice per week during the peak harvest period. The demand for colored peppers has increased, which requires two to four weeks additional growing time. Increased attention to insects and diseases is required in the production of mature, colored fruit.

 

Peppers are often washed after harvest. Water temperature should be close to that of the fruit, and never more than

10°F cooler, to prevent movement of bacteria into the stem


 

 

 

 

end of the fruit. Chlorinated water should be used. Peppers are often waxed to prevent moisture loss and scuffing damage.

 

Bell peppers and fresh hot and novelty peppers are best stored at 50° to 54°F and 90 to 95 percent relative humidity. Chilling injury occurs at temperatures below 45°F, and damage may occur even below 50°F, depending on variety and other factors. Bell peppers may be stored two to three weeks if handled properly. Dried hot peppers are stored at 32° to 38°F.

 


Table 23.3 Nonpathogenic disorders.

Disorder

Management Option

Recommendation

Blossom-end rot

Irrigation, variety

Occurs when soil moisture has become deficient after a period of abundant moisture. Maintain optimum soil moisture.

Poor fruit set

Variety

Nighttime temperatures below 60°F or above 75°F affect fruit setting adversely, and blossom drop is common during periods of abnormally cool or hot weather

Sunscald

Maintain foliage

Caused by intense sunlight on fruit. Maintain foliage and take care when harvesting to avoid breaking-off branches.

Lodging

Stake, variety

Heavy fruit load on sandy soil. In some areas related to Fusarium and dry, hot conditions.

 

 

22.5 Disease Management

22.5.1 Anthracnose fruit rot, Colletotrichum gloeosporioides, C. capsici, and C. coccodes

Time for concern: Called ripe fruit disease, as symptoms appear when fruit turn red or final mature color.

 

Key characteristics: This organism affects both green and ripe fruit, but symptoms usually do not appear until fruit turn red.

Management Option

Recommendation

Scouting/thresholds

Begin sprays as first fruit ripens and follow a seven- to ten-day interval.

Resistant varieties

No resistant varieties are available.

Crop rotation

Follow a minimum two-year rotation out of solanaceous crops.

Seed selection/treatment

The pathogens can be seedborne in pepper.

Postharvest, Site selection, Sanitation

Currently not a viable management option.


 

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

azoxystrobin

 

 

 

 

 

Quadris F

6.2-15.4    fl oz

0

4

1-3

Do not apply more than 1 sequential foliar application of these products or other strobilurin before alternating with a fungicide that has a different mode of action.  Do not spray these products where spray drift may reach apple trees or use same sprayer to apply sprays to apple trees.

 

Amistar 80 WDG

2-5 oz

0

4

2-4

famoxadone + cymoxanil

 

 

 

 

 

 

Tanos 50 DF

8-10 oz

3

12

3

Do not make more than one application of Tanos before alternating with a fungicide that has a different mode of action (other than group 11 fungicide).  Tanos must be tank-mixed with a contact fungicide such as maneb, using at least the minimum labeled rate of maneb.

maneb

 

 

 

 

 

Maneb 75DF             0.75 lb/lb

1.5-3 lb

7

24

24-48

 

 

Manex                          4 lb/gal

1.2-2.4 qt

7

24

19-38

 

pyraclostrobin

 

 

 

 

 

 

Cabrio EG

8-12 oz

0

12

 

No aerial application in NYS.  Do not make more than 2 sequential applications of Cabrio (Group 11) before alternating to a labeled fungicide with a different mode of action.

 

22.5.2 Bacterial leaf spot, Xanthomonas campestris pv. vesicatoria

Time for concern: From seeding to harvest

 

Key characteristics: Necrotic spots may appear on leaves, stems, and fruits. Symptoms first appear on the undersides of leaves as small, water-soaked spots that grow up to 1/4 inch in diameter, turn dark brown, and become raised. Eventually, the leaves yellow and fall off, increasing the chance for sunscald. Fruits develop raised, scablike spots. See Reference 1.

Management Option

Recommendation

Scouting/thresholds

No thresholds are available. If plants have been exposed to high relative humidity (greater than 85 percent) for a few hours over several days, the pathogen can produce disease symptoms. Spraying should begin at this time and continue on a three to five day schedule.

Resistant varieties

Plant resistant varieties. See Section 23.1 Recommended Varieties. These varieties have the hypersensitive gene, meaning that localized plant infection under high disease pressure can still result in some marginal necrosis and small lesions. Varieties without this resistance would be defoliated.

Crop rotation

Minimum two year rotation away from tomato and pepper crops.

Seed selection/treatment

Plant disease-free, certified seed. If bacterial diseases are a major concern, dip seed in a solution containing one quart of bleach plus four quarts of water plus 1/2 teaspoon of surfactant for one minute. Provide constant agitation. Use at a rate of one gallon of solution per pound of seed. Prepare a fresh solution for each batch of seed. Wash seed with running water for five minutes, dry thoroughly, and treat with thiram.

Transplants

When using southern produced transplants, make sure they are disease-free and certified. Field sprays should begin shortly after transplanting and be repeated every seven to ten days or more frequently if rain and warm temperatures occur.

Management Option

Recommendation

Postharvest

Crop debris should be destroyed as soon as possible to remove this source of disease for other plantings and to initiate decomposition.

Site selection and Sanitation

These are not currently viable management options.

Compound(s)

 

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

 

copper compounds

 

 

 

 

 

 

Champ or OLF

1.3-2 pt

0

12/24 (see label)

19-29

Label varies with manufacturer and formulation.

 

copper compounds + maneb

 

 

 

 

 

 

##Fixed copper +      Maneb 75DF or OLF

1 lb ai +     1.5 lb

7

24

43-64

##2(ee) recommendation. Grower must have a copy of this recommendation in their possession when applying these materials.

 

 

##Fixed copper +       Manex

1 lb ai +     1.2 qt

7

24

14-16

 

famoxadone + cymoxanil

 

 

 

 

 

 

 

Tanos 50 DF

8-10 oz

3

12

3

For suppression of Bacterial Spot.  Do not make more than one application of Tanos (Groups 11 + 27) before alternating with a fungicide that has a different mode of action (other than group 11 fungicide).  Tanos must be tank-mixed with a contact fungicide such as copper, using at least the minimum labeled rate of copper.

 

Streptomycin sulfate

 

 

 

 

 

 

Agri-mycin 17 or OLF

0.5 lb/     50 gal

0

12

 

Begin application in the 2-3 leaf stage, and may be applied only prior to transplanting.  Not for use in the field.

 

22.5.3 Bacterial soft rot, Erwinia carotovora

 

Time for concern: During fruit development, at harvest, and during transit.

 

Key characteristics: Frequently begins in the peduncle and calyx tissues or through wounds anywhere on the fruit. European corn borer feeding causes such wounds.

Management Option

Recommendation

Scouting/thresholds

No thresholds are available. Monitor European corn boxer flights.

Resistant varieties

No resistant varieties are available.

Site selection

Avoid planting near corn fields.

Transplants

When using southern transplants, be sure they are certified. If they are not, return them. Transplants can be inspected and rejected by a New York State Agriculture and Markets inspector. There is no charge for this service. Begin sprays shortly after transplanting and repeat every seven to ten days if rain and warm temperatures occur.

Postharvest

The addition of chlorine in postharvest wash treatments can prevent the spread of decaying bacteria by killing the organism on contact. See Section 10.1 in the Postharvest Handling chapter.

Sanitation, Crop rotation, and Seed selection/ treatment

These are currently not viable management options.

Compound(s)

No pesticides are available to manage bacterial soft rot.

22.5.4 Damping-off caused by Phytophthora spp., Pythium spp., and Rhizoctonia solani

 

Time for concern: At seeding or transplanting.

 

Key characteristics: Seedlings fail to emerge or collapse in the small seedling stage.

Management Option

Recommendation

 

Scouting/thresholds

No thresholds are available.

 

Resistant varieties

No resistant varieties are available.

 

Site selection, Seed selection/ treatment

These soilborne fungi are commonly enhanced by undecomposed organic matter in soil and high soil moisture.  Use fungicide treated seed and sterilize reused flats.

 

Planting mix

For maximum control use disease-free, synthetic planting mix. If planting mix is not used, pretreat seedbed with Vapam.

 

Crop rotation, Post-harvest, and Sanitation

These are currently not viable management options.

 

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

metam-sodium

 

 

 

 

 

Vapam HL                   4.26 lb/gal

0.75 qt/100 ft2

0

48

49

 

                                                                                   

 

 

 

 


22.5.5 Nematodes (Primarily Northern root-knot nematode)

Time for concern: Before and after planting. Long term planning is needed for sustainable management.

 

Key characteristics: Severely infested plants with root-knot nematode (Meloidogyne hapla) are stunted and exhibit knotted roots.

Management Option

Recommendation

 

Scouting/thresholds

Thresholds are not available. Record the occurence and severity of nematode infection and soil infestation and map hot spots.

 

Resistant varieties

No resistant varieties are available.

 

Crop rotation

Long rotations (minimum of three years) with grain crops are the most practical means of control for root-knot nematode.

 

Site selection

Root-knot nematode is most damaging in sandy soils and soils of poor health.

 

Seed selection/treatment, Postharvest, and Sanitation

These are currently not viable management options.

 

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

oxamyl

 

 

 

 

 

†*Vydate L                 2 lb/gal

2 pt

7

48

12

Not for use in Nassau/Suffolk Counties.  Use with 200 gallons of transplant water if populations are high. Can be supplemented with a foliar application 14 days after transplanting. Additional foliar applications can be made at 7-14 day intervals.

*Restricted use only.

† Not for use in Nassau/Suffolk Counties

 

 

                                                                                   

 

 

22.5.6 Phytophthora blight, Phytophthora capsici

 

Time for concern: July and August

 

Key characteristics: Phytophthora may attack the roots, stems, leaves, and fruit. Sudden wilting and death occur as plants reach the fruiting stage. Stem lesions occur at the soil line and at any level on the stem. Stems discolor internally and collapse. Leaves show small, dark green spots that enlarge and become bleached. Fruit develop dark, water-soaked patches that become coated with white mold and spores. See Reference 2.

Management Option

Recommendation

Scouting/thresholds

This disease starts in low areas of a field after heavy rains and spreads to surrounding plants. No thresholds have been established.

Irrigation

Overhead irrigation should be discontinued if the disease is present.

Resistant varieties

No resistant varieties are available.

Crop rotation

Minimum three year rotation away from peppers, tomatoes, eggplants, or cucurbits.

Site selection

Avoid poorly drained fields.

Ridges

Plant on a ridge or a raised, dome-shaped bed to provide better soil drainage. Raised beds should be used only with trickle irrigation.

Seed selection/treatment

Plant disease-free seed.

Postharvest and Sanitation

These are not currently viable management options.


 

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

copper compounds

 

 

 

 

 

 

##Cuprofix Disperss  ##Cuprofix Ultra 40  ##Champion

##Champ F 

##Kocide 4.5 LF,

##Kocide DF

,##Kocide 2000

2.5-6 lb 1.25-3 lb  2-3 lb

1.3-2 pt 1.3-2 pt

2-3 lb

1.5-2.25 lb

0

0

0

0

0

0

0

24

24

24

24

24

24

24

29-70

34-82

59-89

19-29

19-29

47-71

31-47

##2(ee)  Tank-mix one of the listed copper compounds with Forum (Group 15) or Tanos (Groups 11 + 27).  Products many be used in alternation with other fungicides that also have specific activity for oomycetes, including Phytophthora capsici.

dimethomorph

 

 

 

 

 

 

Acrobat 50 WP

Forum SC

6.4 oz    6.0 oz

0

0

12

12

5

4

Acrobat or Forum (Group 15) are for suppression only.  Do not use less than 20 gallons of water per acre to obtain thorough coverage.

famoxadone + cymoxanil

 

 

 

 

 

 

Tanos 50 DF

8-10 oz

3

12

3

For suppression of foliar and fruit phase only.  Tanos (Groups 11 + 27) must be tank-mixed with a protectant fungicide labeled for control, which include  copper and maneb. Do not make more than one application before alternating to a fungicide with different mode of action.

maneb

 

 

 

 

 

Maneb 75DF             0.75 lb/lb

1.5-3 lb

7

24

24-48

 

 

Manex                        

4 lb/gal

1.2-2.4 qt

7

24

19-38

 

mefenoxam

 

 

 

 

 

Ridomil Gold EC or OLF

1 pt

7

48

14

Apply broadcast surface application prior to planting or in 12 to 16" bands over the row at the time of transplanting. Follow with 2 directed sprays at plant base at 30 day intervals. If plastic mulch is used, apply through the drip irrigation system.

 

Ultra Flourish

1 qt

7

48

7

mefenoxam + copper

 

 

 

 

 

Ridomil Gold Copper

2.5 lb

7

48

54

For prevention of the stem and fruit rot phase, use at 10-14 day intervals.

potassium phosphite

 

 

 

 

 

ProPhyt or OLF

4 pt/      100 gal

0

4

 

Apply to transplants prior to transplanting or apply 5 fl oz/1000 ft row as in-furrow drench at planting.  Reapply as weekly foliar application at 6 pt/A beginning 2 weeks after planting.

 

22.5.7 Seed rot and damping-off

Time for concern: Greenhouse seeding operation

 

Key characteristics: Young seedlings affected prior to emergence above the soil or later as decay of the hyocotyl near the soil line.

Management Option

Recommendation

Scouting/thresholds

No thresholds are available.

Resistant varieties

No resistant varieties are available.

Seed selection/treatment

Seeds should have thiram treatment and then be sown into sterile soil mix.

Postharvest, Crop rotation, Site selection, and Sanitation

These are currently not viable management options.

22.5.8 Cucumber mosaic virus (CMV) transmitted by aphids

 

Time for concern: Any time after transplanting.

 

Key characteristics: Symptoms can be transitory and often appear on lower leaves as ring-spot patterns. Sometimes plants adjacent to ring-spotted plants display a moderate mosaic pattern and have a dull appearance. See Reference 3.

Management Option

Recommendation

Scouting/thresholds

No acceptable level of tolerance is available in any commercial variety.

Resistant varieties

No resistant varieties are available.

Crop rotation, Site selection, Seed selection/ treatment, and Postharvest

These are currently not viable management options.

Sanitation

Eliminate weeds for 150 feet around the field, especially common milkweed, marchcress, and yellow-rocket. This should be done before the crop is established.

Compound(s)

No pesticides are available to manage CMV.

 

22.5.9 Tomato spotted wilt virus (TSWV) transmitted by thrips

 

Time for concern: Seeding in greenhouse and following transplanting to field.

 

Key characteristics: TSWV causes sudden yellowing and browning of young leaves which later become necrotic. Fruit formed after infection develops large, necrotic blotches. See Reference 3.

Management Option

Recommendation

Scouting/thresholds

No thresholds are available.

Resistant varieties

No resistant varieties are available.

Site selection

This disease commonly occurs in greenhouses where ornamentals and potted plants are grown. Grow pepper transplants in greenhouses separate from these contaminating sources.

Seed selection/treatment, Crop rotation, and Postharvest

These are currently not viable management options.

Sanitation

When possible, eliminate weeds near the crop.

Compound(s)

No pesticides are available to manage TSWV.


22.6 Insect Management

22.6.1 Aphids, Primarily the green peach aphid, Myzus persicae

 

Time for concern: June 15 through harvest (Damage may be greater during dry, warm periods.)

 

Key characteristics: Green peach adult aphids can be green, pink, red, or dark brown. They have wings and range in length from 1/32 to 1/16 inch. They can be found exclusively on the undersides of leaves.

Management Option

Recommendation

 

Scouting/thresholds

Examine plants at a minimum of ten randomly selected sites throughout the field. Treatment should begin before the population exceeds 5 nymphs/leaf.

 

Natural enemies

Naturally occurring predators, parasitoids, and pathogens help suppress aphid infestations. Use Reference 4 or www.nysaes.cornell.edu/ent/biocontrol/ for identification of natural enemies. Increases in aphid infestations are sometimes associated with applications of insecticides that have killed natural enemies.

 

Note(s)

Aphid populations may decline during periods of heavy rainfall.

 

Resistant varieties

No resistant varieties are available.

 

Postharvest

Crop debris should be destroyed as soon as possible after harvest.

 

Sanitation

Destroy weeds around the field.

 

Crop rotation, Site selection, and Seed selection/treatment

These are not currently viable management options.

 

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

acetamiprid

 

 

 

 

 

 

Assail 30SG           0.3 lb/lb

2.0-4.0 oz

7

12

1-2

 

imidacloprid

 

 

 

 

 

*Admire Pro                  4.6 lbs/gal

7.0-10.5 fl oz

21

12

7-10

Do not use as a foliar spray

 

*Provado 1.6F              1.6 lb/gal

3.75 fl oz

0

12

1

 

acephate

 

 

 

 

 

Orthene 97                0.97 lb/lb

0.5 lb

7

24

11

For use on non-bell peppers only.  Do not exceed 2 pounds a.i.  per acre per season.

dimethoate

 

 

 

 

 

Dimethoate 400           4 lb/gal

0.5-0.67 pt

0

48

16-22

Peppers may be harvested mechanically day of application.

endosulfan

 

 

 

 

 

 

*Thionex 3EC            3 lb/gal

0.67 qt

1

24

19

 

methomyl

 

 

 

 

 

*Lannate LV               2.4 lb/gal

1.5-3 pt

3

48

13-27

 

oxydemeton-methyl

 

 

 

 

 

*MSR

2 lb/gal

1 qt

3

48

38

 

pymetrozine

 

 

 

 

 

Fulfill                           0.5lb/lb

2.75 oz

0

12

2

Apply when aphids first appear but before populations build to damaging levels.   Do not exceed 5.5 oz/A per season.  Allow 7 days between applications.

*Restricted use only.

 

 

 

 

 

 

22.6.2 European corn borer (ECB), Ostrinia nubilalis

 

Time for concern: mid-July through early August

 

Key characteristics: Eggs are laid in scale-like masses on the undersides of leaves and fruit. The larvae are gray with rows of brown spots. The head capsule is dark brown. Larvae are 3/4 inch long when fully developed. The adult is a yellowish/reddish brown moth, about one inch in length. See References 5 and 6 or www.nysaes.cornell.edu/ent/factsheets/.

Management Option

Recommendation

 

Scouting/thresholds

Insecticide treatments should coincide with peaks in adult activity as determined by pheromone or light traps.  No thresholds have been established. Do not spray before fruit begins to form.

 

Natural enemies

A variety of natural enemies help suppress ECB infestations including predatory lady beetles, minute pirate bugs and lacewings, and fly and wasp parasitoids. Bird predation can also be important. Use Reference 4 or www.nysaes.cornell.edu/ent/biocontrol/ for identification of natural enemies.

 

Resistant varieties

No resistant varieties are available. However, damage is usually more severe on bell peppers than hot peppers.

 

Site selection

Locate pepper fields as far away as possible from corn.

 

Postharvest

Destruction of pepper residue and plowing in the fall can destroy a large percentage of overwintering larvae.  However, this is only helpful if peppers are grown in the same field the following year and there are no nearby corn fields.

 

Sanitation

Eliminate weeds around field edges because they often serve as breeding sites.

 

Crop rotation and Seed selection/treatment

These are not currently viable management options.

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

acephate

 

 

 

 

 

Orthene 97               0.97 lb/lb

0.75-1 lb

7

24

17-23

For use on non-bell peppers only.  Do not exceed 2 pounds a.i. per acre per season.

bifenthrin

 

 

 

 

 

*Capture 2EC              2 lb/gal

2.1-6.4 fl oz

7

12

3-9

 

cyfluthrin

 

 

 

 

 

*Baythroid 2                2 lb/gal

1.6-2.8 fl oz

7

12

1-2

 

indoxacarb

 

 

 

 

 

 

Avaunt                           0.3 lb/lb

3.5 oz

3

12

 

For best results begin applications following two applications of an organophosphate insecticide.

lambda-cyhalothrin

 

 

 

 

 

*Warrior                      1 lb/gal

2.56-3.84 fl oz

5

12

<1-1

 

spinosad

 

 

 

 

 

SpinTor 2SC                2 lb/gal

3-6 fl oz

1

4

<1-2

Do not apply more than 29 oz/A/crop

 

Entrust                       0.8 lb/lb

1-2 oz

1

4

<1-2

Do not apply more than 9 oz/A/crop

zeta-cypermethrin

 

 

 

 

 

*Mustang MAX           0.8 lb/gal

2.24-4 fl oz

1

12

<1

 

*Restricted use only.

 

 

 

 

 

 

 

22.7 Weed Management

Key characteristics: Weed fact sheets provide a good color reference for common weed identification. See Reference 7.  See Chapter 4 for information on scouting/thresholds, site selection, cultivation, and banding of herbicides.

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

preplant incorporated

napropamide (annual grasses and selected broadleaves)

 

 

Devrinol 50-DF          0.5 lb/lb

2-4 lb

 

12

13-25

Apply and incorporate shallowly, not more than 2"", before seeding. Use lower rate on sandy soil. Caution: this herbicide is just as persistent as atrazine. Read label for restrictions on rotational crops.

trifluralin (grasses and many broadleaves, except ragweed, galinsoga species, and mustard)

 

Treflan HFP                  4 lb/gal

1-2 pt

 

12

13-27

Transplants only. Use lower rate on sandy soils. Incorporate 2"" within a few hours of spraying. Exceeding recommended dosages may cause severe stunting.

preplant incorporate or preemergence

bensulide (annual grasses, redroot pigweed, and common lambsquarters)

 

Prefar 4-E                     4 lb/gal

5-6 qt

 

12

120-144

Irrigate immediately after application. Crop rotation for nonlabeled crops is 120 days.

preemergence

clomazone (annual grasses and selected broadleaf weeds, e.g. velvetleaf))

 

Command 3ME            3 lb/gal

0.67-2.67 pt

 

12

3-10

DO NOT use on banana peppers.  DO NOT  apply to soil that that will be covered by plastic mulch.  Apply only as a preemergent soil applied treatment prior to transplanting. Place roots of transplants below the chemical barrier when planting.  Residual carryover of Command 3ME may injure fall-planted wheat or rye crops.  See label for additional rotational restrictions.

pre and post transplant

s-metolachlor (annual grasses, yellow nutsedge, galinsoga, selected broadleaves, i.e. redroot pigweed, and nightshade species)

 

*† Dual Magnum         7.62 lb/gal

0.5-1 pt

 

24

12-18

See comments below

NOT FOR USE IN NASSAU AND SUFFOLK COUNTIES.  Apply pretransplant surface (not incorporated) or post-transplant within 48-72 hours. Grower experience suggests that postemergence applications to peppers grown on plastic may cause significant crop injury if rain/irrigation is sufficient to wash product into the holes around the transplants. Syngenta has created a new means of acquiring the indemnification required when using Dual Magnum on the vegetable crops registered on New York State’s multi-crop 24(c) Special Local Need (SLN) supplemental label.  The required product label and indemnification can only be obtained through the “special labels” link found at www.farmassist.com and must be obtained by the ‘end-user’.  If difficulties are encountered in using the website call the Syngenta Customer Resource Center at 866-796-4368.

 


 

Compound(s)

 

 

 

 

 

Common name

Rate/A

PHI

REI

Field

 

 

Trade name

Product

(days)

(hours)

Use EIQ

Comments

preemergence or postemergence to weeds

halosulfuron (Preemergence applications:  galinsoga, lambsquarters, mustard/radish species, redroot pigweed, ragweed, velvetleaf.  Yellow nutsedge is suppressed but not controlled.  Postemergence applications:  yellow nutsedge, galinsoga, redroot pigweed, mustard/radish species, ragweed, velvetleaf)

 

Sandea

0.5-1 oz

30

12

<1

May be applied only to row middles.  No more than 2 oz/Acre may be applied per season. 

clethodim (annual and perennial grasses)

 

*Select 2EC                   2 lb/gal

6 - 8 fl. oz.

20

24

2

For control of numerous annual and perennial grasses.  DO NOT apply more than 32 fl. oz. of Select 2EC (0.5 lb ai) per acre per season.   DO NOT apply more than 8 fl. oz. per application. Application on LONG ISLAND is restricted to no more than 16 fl. oz. of Select 2EC (0.25 lb ai) per acre per season.  Always use a crop oil concentrate at 1% V/V in the finished spray volume.

sethoxydim (annual grasses)

 

Poast                           1.5 lb/gal

1.0-1.5 pt

 

12

5-7

Apply when grasses are actively growing. See label for specific stages of development and the use of oil adjuvants.

paraquat (nonselective)

 

*Gramoxone Max         3.0 lb/gal

1.3-2.7 pt

 

12

12-25

Apply as a directed-shielded spray.

 

*Gramoxone Inteon        2.5 lb/gal

2-4 pt

 

12

19-37

postemergence - hooded row middle application

 

 

carfentrazone

 

 

 

 

 

 

Aim EW                        1.9 lb/gal

0.5-1.6       fl oz/ application

0

12

<1-5

May be used only as a hooded, row middle application.  Sprayers must be designed to prevent ANY contact with the crop and may not be operated at more than 5 MPH.  Special care must be taken when operating on uneven ground.  See product label for additional precautions.

*Restricted use only.

†Not for use in Nassau/Suffolk Counties

 

 

22.8 References

 

1      Zitter, T. A. 1985. Bacterial spot of pepper, p. 736.10. In Vegetable Crops: Diseases of Pepper. New York State Agricultural Experiment Station, Geneva.

2      Zitter, T. A. 1989. Phytophthora blight of pepper and certain other vegetables, p. 736.20. In Vegetable Crops: Diseases of Pepper. New York State Agricultural Experiment Station, Geneva.

3      Zitter, T. A., D. Florini, and R. Provvidenti. 1984. Virus diseases of pepper, p. 736.00. In Vegetable Crops: Diseases of Pepper. New York State Agricultural Experiment Station, Geneva.

4      Hoffmann, M. P., and A. C. Frodsham. 1993. Natural Enemies of Vegetable Insect Pests. Cornell Cooperative Extension. 64 pp.

5      Andaloro, J. T., A. A. Muka, and R. W. Straub. 1983. European corn borer, p. 794.00. In Vegetable Crops: Insects of Corn. New York State Agricultural Experiment Station, Geneva.

6      Showers, W. B., J. F. Witkowski, C. E. Mason, D. D. Calvin, R. A. Higgins, and G. P. Dively. 1989. European Corn Borer: Development and Management. North Central Regional Extension Publication 327. 198 NCR Educational Materials Project, B-10 Curtiss Hall, Iowa State University, Ames, IA 50011.

7      Pennsylvania State University. 1987. Weed identification, pp. 1-32. PA State University Cooperative Extension, University Park.

 


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