2020 commercial cranberry p c r new j

2020 COMMERCIAL

CRANBERRY PEST CONTROL

RECOMMENDATIONS FOR

NEW JERSEY

Peter Oudemans (editor)

Specialist in Plant Pathology

Thierry Besançon

Specialist in Weed Science

Cesar Rodriguez-Saona

Specialist in Entomology

E308

Cooperative Extension

Bulletin

Rutgers Cooperative Extension -2- 2020

2020 CRANBERRY PEST CONTROL RECOMMENDATIONS FOR NEW JERSEY

Welcome to the 2020 cranberry recommendations. In this edition we are including more information on development of cranberry in relation to pest control. It is very important to make applications at the appropriate time to ensure maximum benefit and minimal side effects. Many of our pesticides are no longer patented and are being replaced by generic materials. These are often less expensive but careful attention should be placed on the label since the concentration of active ingredient may change.

Also, please note that as the markets become more global, MRLs (maximum residue limits) play a stronger role in pesticide choices and can affect how and where a product is marketed. The pesticide label is the law but will only represent the national MRLs not global.

PESTS REMARKS MATERIALS RATE/A

GENERAL

Cranberry tipworm is much less a problem on April-drawn bogs than on May-drawn bogs. The rapid lush growth of bogs drawn in May encourages infestations of tipworm. Early drawing, however, increases populations of fruitworms and fireworms

Holding flood until early May can aid in reduction of fireworm and cranberry fruitworm populations.

Tight bud

Bud swell

Cabbagehead

Bud break

Bud elongation.

Roughneck

Hook

Bloom

Terminology for Cranberry Bud Development and Growth from Workmaster, B.A., Palta,J.P., and Roper, T.R.


CABBAGEHEAD - PREBLOOM

PESTS Remarks MATERIALS RATE/A

Upright Dieback Begin at budbreak and repeat 10-14 days later

Bravo WS 4 to 6.5pt Champ Formula 2, 0.66 gal Indar 2F 12 fl oz

Fairy ring Begin at cabbagehead Indar 2F 6 to 12 fl oz and do not apply past hook Abound 15.5 oz

To effectively suppress Fairy Ring apply fungicide in sufficient water to wet the soil to approximately 6” in depth. This translates to 8712 gallons/acre. See page 4 for detailed instructions.

Blossom worm Altacor 3 to 4.5oz Spotted fireworm Confirm 2F 16 fl oz Sparganothis fruitworm Delegate WG 3 to 6 oz Gypsy moth Diazinon AG500, 4E 2 to 3 qt False armyworm Diazinon AG600 WBC 51.0 to 76.5 fl

oz Spanworm Diazinon 50W 4 to 6 lb Blackheaded fireworm Entrust SC

Exirel 4 to 10 oz 10 to 20.5 fl oz

Imidan 70W 1 to 4 lb Intrepid 2F 10 to 16 fl oz

Lorsban 4E 3 pt Lorsban 75WG 2 lb Nufos 4E 3 pt Orthene 97 1 lb

Rimon 0.83EC 12 fl oz

Spanworm Gypsy moth Blossom worm Avaunt 6 oz Blackheaded fireworm

Cranberry tipworm Diazinon AG500, 4E 2 to 3 qt Remarks: Keep bees off bogs until 7 days after spraying except for Confirm 2F, Intrepid 2F, Delegate WG, and SpinTor 2SC application. Sanding helps to control tipworm, Sparganothis, spotted fireworm and cranberry girdler.

Diazinon AG600 WBC 51.0 to 76.5 fl oz

Diazinon 50W

4 to 6 lb


PRE-BLOOM SPRAY


Blunt-nosed Dangle stage but before Closer SC1 2.75-5.75 fl oz leafhopper bloom. Diazinon AG500, 4E 2 to 3 qt Diazinon AG600 WBC 51 fl oz 1 Do not apply this product at

any time between 3 days prior to bloom and until after petal fall

Diazinon 50W 4 lb Lorsban 4E 1.5 to 3.0 pt

Lorsban 75WG 2 lb

Mites Agri-Mek SC (8% ai) 3.5 fl oz

Root rot When soil or reservoir Phosphite See below temperatures reach 60oF Ridomil SL 1 to 1.75 pt

Ridomil Gold GR 20 to 35 lb Ridomil Gold WSP 1.0 to 1.5 lb

A note on Phosphite fungicides: Phosphite (AKA phosphonate, phosphorous acid) based fungicides are all similar in activity. None of these are effective as fertilizer because the phosphite molecule must be converted to phosphate by soil bacteria before being useful to the plant. There is no evidence that these materials provide any physiological benefit other than disease control. There are several materials available (Prophyt, Reveille, K-Phite, Rampart, Confine-Extra, Fungi-Phite, Phostrol, etc.) and the best way to compare these is by examining the label to determine the pounds of phosphorous acid per gallon since this is the standard by which all products labelled. Two examples are provided below with the concentration highlighted in yellow. Please be aware that the labels can be quite different so PLEASE read the label for the product you are using.


FUNGAL FRUIT ROTS For the most economical and efficient control of fungal fruit rot, three

categories for control have been established.

Control of cranberry fruit rot is achieved by proper timing and sequence of fungicide applications. Timing is important because the fungi causing fruit rot tend to cause more infections that lead to rot during the flowering and early fruit development. Sequence is important because different fungicides can affect the plant differently during development. Specifically, chlorothalonil (e.g. Bravo) can be phytotoxic to bloom but provides excellent protection during fruit development. Also, recommendations differ among cultivars slightly. In general early bloom sprays work well and will guarantee a residue at the site of action. The early timing given below is the latest you should wait. Recent research has shown that combinations of Indar and Abound provide excellent disease control in early applications although new fungicides such as Proline are replacing Indar. In general, for New Jersey, applications begin in mid-June and are complete by late-July. Oso and PHD are newly registered, old fungicides which can play a role during the late season especially on susceptible cultivars. In the section below you will find specific recommendation options for fruit rot control.

This scheme will be useful for growers who cannot use chlorothalonil products

1. Early Black Begin applications at 30 to 60% bloom. Follow with at least two

additional applications at 5- to 10- day intervals Mullica Queen

2. Stevens Begin applications at 30 to 60% bloom. Follow with two - four additional applications at 5- to 10- day intervals Crimson Queen

3. Ben Lear Begin applications at scattered bloom. Follow with a second application

at 60% out of bloom and make at least two subsequent applications at 5- to 10-day intervals.

Demoranville 4. New and untested varieties

Begin applications at 30 to 60% bloom. Follow with two - four additional applications at 5- to 10- day intervals


Fungicides labelled for fruit rot control

Fungicide (FRAC Group)

REI (hrs) PHI (days) Rate/acre Max Amt/ season

Indar (3) 12 30 12 fl.oz. 48 fl.oz.

Proline (3) 12 45 5 fl.oz. 10 fl.oz.

Abound* (11) 4 3 6-15.5 fl.oz 90 fl.oz.

QuadrisTop (3,11) 12 30 10-14 fl.oz. (see note below)

42 fl.oz.

mancozeb* (M3) 24 30 3-6 lb 18 lb

Mankocide *(M3) 48 30 7 lb 21 lb

chlorothalonil* (M5)

12 50 4-6.5 pt 20 pt

Ferbam (M3) 24 28 days post mid-bloom

6.1 lb 5 applications

* Numerous formulations available. Read product label for specific instructions (see page 11) Note: Mancozeb containing fungicides may inhibit development of anthocyanins and reduce fruit size. Chlorothalonil-based fungicides can reduce fruit set when used during bloom.


IN-BLOOM INSECT CONTROL

PESTS REMARKS MATERIALS RATE/A

Blossom worm, Confirm 2F 16 fl oz Spanworm, Crymax, 1.0 to 1.5 pt False armyworm, DiPel ES 1.0 to 2.5 lb Gypsy moth, DiPel DF 1.0 to 1.5 lb Blackheaded fireworm Intrepid 2F 10 to 16 fl oz

Cranberry fruitworm Intrepid 2F 10 to 16 fl oz Unfortunately, there is still some open bloom when this treatment must be made. Waiting until all blossoms have dropped may result in heavy cranberry fruitworm infestation.

FIRST POST-POLLINATION SPRAY - Remove bees before spraying.


Cranberry fruitworm, Sparganothis fruitworm Spotted fireworm

Altacor 3 to 4.5oz Confirm 2F 16 fl oz Delegate WG 3 to 6 oz Diazinon AG500, 4E, 2 to 3 qt

Diazinon AG600 WBC 54.5 to 76.5 fl oz Diazinon 50W 4 to 6 lb Entrust SC

Exirel 4 to 10 oz 10 to 20.5 fl oz

Intrepid 2F 10 to 16 fl oz Lorsban 4E 3 pt Lorsban 75WG 2 lb

Cranberry fruitworm Assail 30SG 4.0 to 6.9 oz Knack 16 fl oz Belay 4 fl oz

Blunt-nosed leafhopper Toadbugs Other leafhoppers

Actara 3 to 4 oz Assail 30SG 1.9 to 4.0 oz

Belay 4.0 fl oz Closer SC

Cormoran 2.75-5.75 fl oz 9 to 12 fl oz

Diazinon AG500, 4E 2 to 3 qt Diazinon AG600 WBC 54.5 to 76.5 fl oz Diazinon AG600 WBC 54.5 to 76.5 fl oz Lorsban 4E 3 pt Lorsban 75WG

Sevin XLR Plus, 4F Sevin 80 Solupak Venom

2 lb 1.5 to 2 qts 1.8 to 2.5 lbs 2 to 4 oz


Cranberry rootworm Immediately after removal of bees

Admire Pro 7 to 14 fl oz

Scarab grubs Belay 12.0 fl oz Applications of imidacloprid (Admire Pro, Couraze 2F, Macho 2FL, Alias 2F) are not permitted by air. Irrigate target area with 0.1 to 0.3 inches before and after the application

Couraze 2F 16 to 32 oz Macho 2FL 16 to 32 oz Alias 2F 16 to 32 oz

This treatment can be made only during post-pollination season.

Cranberry rootworm Nematodes See label

SECOND POST-POLLINATION SPRAY

Fireworms, Insecticides same as above Fruitworms, Sparganothis fruitworm

Phytophthora root See PHI for specific materials Phosphorous Acid See label rot Ridomil Gold EC 1.0 to 1.75 pt Ridomil Gold GR 20 to 35 lb Ridomil Gold WSP 1.0 to 1.5 lb


NEW BOG SPRAY

Cranberry flea beetle and Blunt-nosed Actara 3 to 4 oz leafhopper Assail 30SG 1.9 to 4.0 oz Belay 4.0 fl oz Early July. Diazinon AG500, 4E 2 to 3 qt Diazinon AG600 WBC 54.5 to 76.5 fl oz Diazinon AG600 WBC 54.5 to 76.5 fl oz Lorsban 4E 3 pt Lorsban 75WG 2 lb Sevin 4F

Venom 2 to 4 pt 2 to 4 oz

Blunt-nosed leafhopper

Closer SC 2.75-5.75 fl oz

Cranberry flea beetle

Belay 4 fl oz

Leaf drop fungi Make two applications after growth begins. Begin June 15 and a second on July 15

Indar 12 fl oz

Proline 5 fl oz

GIRDLER FALL REFLOW

Cranberry girdler Last week of September.

Nematodes Reflow for 7 days

See label


PESTICIDE USE RESTRICTIONS - CRANBERRY

PESTICIDE* REI PHI APPLICATION NOTES

Azoxystrobin* 4 hrs F 3 days 90 fl.oz maximum per season Actara 12 hrs I 30 days 8oz of Actara/acre/season maximum Admire Pro 12 hrs I 30 days 14 fl oz/acre/season maximum

Agri-Mek SC (8% ai) 12 hrs I 3 days 14 fl oz/acre/season maximum; no aerial application; see label

Alias 2F 12 hrs I 30 days 32 oz per acre/season maximum Altacor 4 hrs I 1 day 3 applications maximum Assail 30SG 12 hrs I 1 day 5 applications maximum Avaunt 12 hrs I 30 days 24 oz per acre/ season maximum Belay 12 hrs I 21 days 12 fl oz/acre/season maximum Beleaf 12 hrs I 0 days 3 applications maximum Chlorothalonil* 12 hrs F 50 days 3 applications maximum Closer SC 12 hrs I 7 days 17 fl oz/acre/year maximum Confirm 2F 4 hrs I 30 days 4 applications maximum Cormoran 12 hrs I 1 day 35 fl oz/acre/year maximum Couraze 2F 12 hrs I 30 days 32 oz per acre/ season maximum

Courier 12 hrs I 3 days Do not make more than 2 applications per crop cycle

Crymax 4 hrs I 0 days Delegate 4 hrs I 21 days 19.5 oz /acre or 6 applications per calendar year Diazinon 24 hrs I 7 days 4 applications maximum DiPel 4 hrs I 0 days

Entrust SC 4 hrs I 21 days 9 oz/acre/season maximum

Ferbam 24 hrs F 28 days post mid-bloom, 5 applications maximum

Exirel 12 hrs I 14 days 0.4 lb ai/acre/season maximum Grandevo Imidan 70W

4 hrs 24 hrs

I I

0 days 14 days

Temporarily repels bees following application 15.6 lb/acre/season maximum

Indar 2F 12 hrs F 30 days 4 applications maximum Intrepid 2F 4 hrs I 14 days 64 fl oz/acre/season maximum Knack 12 hrs I 7 days 2 applications maximum Lorsban 75WG or 4E 24 hrs I 60 days 2 applications maximum Macho 2F 12 hrs I 30 days 32 oz/ acre/season maximum Mancozeb 24 hrs F 30 days See label for maximum allowable rates Mankocide 24 hrs F 30 days 96 lb/acre/season maximum

Movento 24 hrs I 7 days Do not apply until petal fall. 30 fl oz/acre/season maximum

Nematodes --- 0 days Apply in late evening. Irrigate Oberon 2SC 12 hrs I 3 days 3 applications maximum Orthene 24 hrs I 75 days 1 application maximum Oso 4 hrs F 0 days 78 fl. oz max/acre/season

Phosphites* 4 hrs F 3 days 4 applications maximum, see label for specifics and note on page 5


Proline 12 hrs F 45 days 2 applications max. No aerial applications Pyganic EC 1.4 12 hrs I 0 days

Quadris Top 12 hrs F 30 days 3 applications maximum, 2 applications in sequence maximum

Ridomil* 48 hrs F 45 days 3 applications maximum Rimon 12 hrs I 1 day 36 oz/acre/season maximum Sevin 12 hrs I 7 days 5 applications maximum Venom 12 hrs I 7 days 8 oz/acre/season maximum Venerate 4 hrs I 0 days Do not apply when bees are foraging

*Additional trade names: Azoxystrobin: Abound, Aframe, Azaka, Azoxystar, Azoxyzone, Satori (there are at least 30 products)

Chlorothalonil: Bravo 90DG, Bravo 720, Bravo Ultrex, Echo, Ensign 720, Equus, Initiate, Praiz, Rialto, etc. Mancozeb: Dithane DF, Dithane F-45, Dithane M-45, Manex II, Manzate DF, Penncozeb DF or WP Phosphites: Prophyt, Reveille, K-Phite, Rampart, Confine-Extra, Fungi-Phite, Phostrol (and many more) Metalaxyl/Mefanoxam: Orondis Gold B, Ridomil Gold GR, Ridomil Gold SL, Ultra Flourish, Metalaxyl 2E AG, MetaStar 4S, ReCon 4F, MetaStar 2E


CRANBERRY WEED CONTROL

Timing / Targeted Weeds

Herbicide, Mode of Action Code and Formulation

Commercial Product Rate/A

Precautions and Remarks

PREEMERGENCE Annual and perennial broadleaf weeds as well as grass weeds

dichlobenil, MOA 20 (Casoron) 4 G Restricted entry interval (REI): 12 h Preharvest Interval (PHI): N/A

100 lb

DO NOT apply more than 100 lb product per acre per 12-month period

Apply in the spring prior to bud break. Fall applications are discouraged. Effective rate will vary with target weed. Use lowest effective rate possible and avoid continual use to prevent yield losses due to stress. Aerial application not suggested due to chance of overlap. Applications under sand or on weak vines may cause injury. Avoid application during temperatures higher than 60oF. Dichlobenil needs to be watered in as soon as possible after application to avoid volatilization. Established woody perennials may not be controlled.

PREEMERGENCE Annual grass and small seeded broadleaf weeds

napropamide, MOA 15 (Devrinol DF-XT) 50 DF (Devrinol 2-XT) 2 EC new plantings sandy beds peat beds Restricted entry interval (REI): 24 h Preharvest Interval (PHI): N/A

6 lb or qt 8 to 12 lb or qt 12 to 18 lb or qt

DO NOT exceed 6 lb or qt/A in new plantings, 12 lb or qt/A in beds with sandy soil and 18 lb or qt/A in peat beds per 12-month period.

Apply in early spring after the winter flood has been removed and before growth begins. Instructions for application through sprinkler irrigation systems are also included on the label. Napropamide is a germination inhibitor and will not control established weeds. Use air or ground application. Material should be watered in through rain or irrigation within 4 days of application. For best results, water in immediately after application. Effective against most grasses, sedges (Cyperus dentatus), and some broadleaf weeds. The granular formulation of napropamide (Devrinol 10G) has been discontinued. Existing supplies of Devrinol 10G may be used until the supply is depleted.






PREEMERGENCE Annual grasses, rushes, and sedges

norflurazon, MOA 12 (Evital) 5 G Restricted entry interval (REI): 24 h Preharvest Interval (PHI): N/A

40 to 120 lb

DO NOT apply more than once per 12-month period.

Apply in fall at least 2 weeks before winter flood or in early spring after winter flood has been removed and before weed growth begins. Injury may occur in areas where water puddles for several days after flooding or heavy rains. Aerial application is not recommended due to chance of overlap. Use lower rates where one or more of the following exists: open areas, sanded, well maintained, sandy soils, young weeds, and stressed vines. Higher rates can be used under the following conditions: mat of vines and weed stems, no irrigation, peat soils, established perennials, and vigorous vines.

PREEMERGENCE and POSTEMERGENCE Annual broadleaf weeds, rushes, and sedges

mesotrione, MOA 27 (Callisto) 4 SC Restricted entry interval (REI): 12 h Preharvest Interval (PHI): 45 days

8 oz

DO NOT exceed 16 oz/A per 12-month period or 8 oz/A per application. DO NOT apply within 10 feet of surface water or to “run-off”. DO NOT apply within 48 hours of irrigation for frost protection.

Apply in late spring (May) before bloom and when irrigation for frost protection will not be needed anymore. Treat newly planted bogs after cuttings have rooted, but before weeds have become established. Repeat the application in early summer (July) after bloom. Optimum performance can be obtained by ensuring an 8 to 12 hr rain-free period after application, followed by a light irrigation to move the herbicide into the root zone. Heavy irrigation, such as for frost protection, can move the herbicide below the root zone of target weeds and may result in reduced weed control or weed control failure Add NIS (nonionic surfactant) at 0.25% v:v or 1.9 tsp per gallon when cranberries are growing rapidly and warm cloud humid weather encourages thin leaf cuticle to form. Add COC (crop oil concentrate) at 1% v:v or 2.5 tsp per gallon when growth has “hardened off” or when hot dry sunny weather encourages thick leaf cuticle to form. Callisto causes bleaching (whitening) of the stems and foliage of susceptible plants. “Soft” growing conditions, warm cloudy humid weather, during periods of rapid growth the week before Callisto application and cold weather after application increase the possibility of observing the temporary whitening. When observed, the cranberries recover with no long term effects.






PREEMERGENCE and POSTEMERGENCE Dodder, loosestrife and other broadleaf and grass weeds

quinclorac, MOA 10 (Quinstar) 4 L Restricted entry interval (REI): 12 h Preharvest Interval (PHI): 60 days

8.4 oz

DO NOT exceed 16.4 oz/A per 12-month period or 8.4 oz/A per spray. DO NOT apply by air. Ocean Spray growers should consult with the cooperative before applying Quinstar 4L concerning the company’s policy on Quinstar 4L as it relates to European exports.

Apply in late April or early May prior to dodder germination and attachment to control dodder and many annual grass and broadleaf weeds during the late spring and early summer. Repeat the application in early July after cranberry bloom for full season dodder and annual weed control, and to control yellow loosestrife. No effect from the application of quinclorac will be observed the year yellow loosestrife is treated. Control will be observed the following spring. Allow 30 days between applications. Add COC (crop oil concentrate) at 2 pt per acre.

POSTEMERGENCE Chairmaker’s bullrush, steeplebush, loosestrife, morningglory, leatherleaf, sweet pepperbush, dewberry and other woody and broadleaf weeds

2,4-D, MOA 10 (Weedar-64) 3.8 SL Restricted entry interval (REI): 48 h Preharvest Interval (PHI): 30 days

2.4 pt

DO NOT allow solution to drip onto vines. DO NOT apply material in hot humid weather or when an air inversion exists as vine and blossom injury can occur.

Use only the liquid amine form of 2,4-D as a wipe. Mix 1 part Weedar-64 to 4 parts water to make a 20% solution. Wipe mixture over the top of tall weeds. Use of a crop safe dye in the mixture is recommended to mark where you have wiped. For best results, use in late June and July.

POSTEMERGENCE Broadleaf weeds including vetch, clover, wild bean dock, goldenrod, aster, ragweed, and thistle

clopyralid, MOA 10 (Stinger) 3 EC (Spur) 3 EC Restricted entry interval (REI): 12 h Preharvest Interval (PHI): 50 days

2.67 to 8 oz 0.25 to 1 pt

24(c) Special Local Need Registration for Stinger DO NOT exceed 16 oz/A per 12-month period. DO NOT exceed 8 oz/A per spray for Stinger or 1 pt/A for Spur DO NOT apply by air or through the irrigation system. DO NOT overspray or to “run-off” as this type of application may result in moderate or severe crop injury.

Apply at or soon after weed emergence as a single or split application by a ground driven boom sprayer calibrated to deliver between 20 and 50 gal/A. Cranberries are more sensitive to clopyralid before bloom. Use the lower rate when applications are made in the spring before bloom and the period of rapid shoot growth in late May and June. Use the higher rate for most weed problems when applications are made in the summer after bloom. Apply the highest labeled rate to control heavy aster, goldenrod, or Canada thistle infestations. Read and follow all Specific Use Restrictions on the label.






POSTEMERGENCE Annual and perennial grasses

sethoxydim, MOA 1 (Poast) 1.5 EC Restricted entry interval (REI): 12 h Preharvest Interval (PHI): 60 days

0.5 to 2.5 pt

DO NOT apply through the irrigation system. DO NOT exceed 5 pt/A per 12-month period or 2.5 pt/A per spray.

Consult label for optimal growth stage and rate for specific grass type. Add crop oil concentrate at 2 pt/A or DASH HC at 1 pt/A. Allow 14 days between applications. Spot treatment: Add 1.25 oz Poast and 1.25 oz of crop oil concentrate (COC) per gal of water and spray to wet.

POSTEMERGENCE Annual and perennial grasses

clethodim, MOA 1 (Intensity, Select) 2 EC (IntensityOne, Select Max) 1 EC Restricted entry interval (REI): 24 h Preharvest Interval (PHI): 30 days

6 to 8 oz 9 to 16 oz

2 EC: DO NOT exceed 32 oz/A per 12-month period or 8 oz/A per spray. 1 EC: DO NOT exceed 64 oz/A per 12-month period or 16 oz/A per spray. Do NOT apply between the “hook” stage and full fruit set. DO NOT apply on weeds under stress as this will result in poor control.

Apply to actively growing grasses before tillering (annuals) and/or seedhead formation (perennials). Consult the label for additional information on recommended size of grasses for treatment. Add adjuvants according to label directions. Allow 14 days between applications. Spot treatment: Add 0.66 to 1.33 oz of Select 2EC and 1.25 oz of crop oil concentrate (COC) per gal of water and spray to wet.

POSTEMERGENCE NON-SELECTIVE Most annual broadleaves and grasses, and a few perennials

glyphosate, MOA 9 (various brand and formulations) Restricted entry interval (REI): see label Preharvest Interval (PHI): 30 days

See label

DO NOT allow solution to drip onto vines. DO NOT apply on weeds under stress as this will result in poor control. DO NOT use, mix, or store in a galvanized container.

Add 1 part glyphosate to 4 parts water to produce a 20% solution. Use a wick or wipe applicator to wipe over the tops of weeds. Use of a food safe dye in the mixture is advised to mark where you have wiped. Solutions should be mixed daily and stored out of the sun for maximum effectiveness. Warm humid conditions are optimal for control. More than one application per year is allowed. Rainfall or irrigation within 6 hours after application may reduce effectiveness. Motorized wipe equipment should be operated at 3 MPH, slower for hard to control weeds or where weeds are dense. For improved control, make two applications in opposite directions. Minimal control of hardhack, leatherleaf, maple, and sweet pepperbush.


Renovation on non-productive bogs – DO NOT APPLY TO GROWING CROP





PREPLANT Most annuals and perennials

metam-sodium, MOA 26 (Vapam HL) 42% Restricted entry interval (REI): 120 h Preharvest Interval (PHI): N/A

50 to 100 gal

Soil fumigant. Vapam is a restricted-use pesticide. DO NOT contaminate soil by mixing lower layers in to the upper soil layer.

Follow label directions and restrictions. Use 50 to 60 gal/A rate for herbaceous weeds eradication and 100 gal/A rate for woody plants eradication. Before and during application, soil temperature in the treatment zone should be between 40 and 90°F. Aboveground vegetation should be burned off or removed before application. Sand for planning should then be applied. Incorporate to 8 inches deep. Drench with water and rototill before and after application for best results. Planting must be delayed until fumigant has dissipated from the soil. See labels for specifics on the number of days to wait before planting.

PREPLANT Most annuals and perennials

diquat, MOA 22 (Reglone) 2 SL Restricted entry interval (REI): 24 h Preharvest Interval (PHI): N/A

1.5 to 2 pt

Non-selective herbicide. DO NOT apply through the irrigation system. DO NOT use for spot treatment.

Follow label directions and restrictions. Reglone is a desiccant and should only be used as a directed spray during site preparation prior to planting. Retreatment may be necessary for complete control of grasses and older established weeds. Add NIS (nonionic surfactant) at 0.25% v:v or 1.9 tsp per gallon.


NOTES

© 2020 by Rutgers Cooperative Extension, NJAES, Rutgers, The State University of New Jersey.

Revised: January 2020

RUTGERS COOPERATIVE EXTENSION

N.J. AGRICULTURAL EXPERIMENT STATION

RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY

NEW BRUNSWICK Cooperating Agencies: Rutgers, The State University of New Jersey, U.S. Department of Agriculture, and County Boards of Chosen Freeholders. Rutgers Cooperative Extension, a unit

of the Rutgers New Jersey Agricultural Experiment Station, is an equal opportunity program provider and employer.

Mention or display of a trademark, proprietary product, or firm in text or figures does not constitute an endorsement by

Rutgers Cooperative Research & Extension and does not imply approval to the exclusion of other suitable products or firms.

2020 commercial cranberry p c r new j

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