Vegetable Production Guide

Beans (snap)
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Table 3 Bean Disease Control

This section was updated - 16 January 2018

Table 3 Bean Disease Control

 

Product

Rate

PHI*

Comments

Bacterial Blight

Parasol F

(copper hydroxide)
2.3 to 3.12 L/ha
(0.9 to 1.25 L/acre)
1
  • Apply at 7 to 14 day intervals.
  • Group M1 fungicide

Kocide 2000

(copper hydroxide)
 
Group M
 
smileyUsed in organics
1.6-2.3 kg/ha
(600 to 900 g /acre)
1
  • Make 1st application when plants are 15 cm tall.
  • Repeat using a 7 to 14 day interval.
  • Maximum 10 applications per year.
  • smileyKocide 2000 (PCP# 27348) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Cueva

(copper octanoate)

Group M1

Use a 0.5% to 2% solution at 470 to 940 L/ha (190 to 380 L/acre) 1
  • For a 0.5% solution, mix 1 part Cueva to 200 parts water.
  • For a 2% solution, mix 1 part Cueva to 50 parts water.
  • Repeat at 7 to 10 day intervals.
  • Repeat at 5 to 7 day intervals following heavy rain or when disease pressure is high.
  • Do not make more than 15 applications per year.
  • Time applications so that 12 hours of dry weather follow application.
  • Do not re-enter treated area for 4 hours.

Grey Mould

Lance WDG


(boscalid)

Group 7
420 g/ha
(160 g/acre)

Apply in at least 100 L/ha (40 L/acre) of water
7
  • Apply at 20 to 50% bloom.
  • Maximum of 2 applications per season.
  • Apply at 7 to 14 day intervals.
  • Do not enter treated area for 12 hours.
  • For crops not on the label, observe a plant back interval of 14 days.

Rovral WP


(iprodione)

Group 2
1.5 kg/ha
(600 g/acre)

Apply in 300 L/ha (120 L/acre) of water
15
  • Apply when first blossoms open and repeat at full bloom (“Full bloom” is when all plants have at least one blossom open.)
  • If only one application is to be made, spray when first blossoms open.
  • Addition of a spreader-sticker is recommended.

Switch 62.5 WG


(cyprodinil & fludioxonil)

Group 9 & 12
775 to 975 g/ha
(314 to 395 g /acre)

Apply in at least 175 to 225 L/ha (71 to 91 L/acre) of water
7
  • Also controls white mould.
  • For white mould control, make the first application at 20% bloom.
  • Repeat applications at 7 day intervals.
  • Do not make more than 2 sequential applications of Switch or other fungicides in the same group (9 or 12) in a season.
  • Do not apply more than 1.1 kg/ha (400 g/acre) of cyprodinil products and 730 g/ha (300 g/acre) of fludioxonil products per crop.
  • Observe a 30 day plantback interval for crops not listed.
  • Do not enter treated area for 12 hours.

Fontelis


(penthiopyrad)

Group 7
1.0 to 2.25 L/ha
(400 to 910 mL/acre)

Apply in 110 L/ha (45 L/acre) of water
0
  • Also controls Alternaria blight leafspot.
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 5.25 L/ha (2.2 L/acre) per season.
  • Do not make more than 2 sequential applications before switching to a fungicide with a different mode of action.
  • Do not re-enter for 12 hours.

White Mould

Allegro 500F


(fluazinam)

Group 29
0.6 to 1.0 L/ha
(200 to 400 mL/acre)

Apply in 300 to 1000 L/ha (120 to 400 L/acre) of water
14
  • Begin application when 10% of plants have at least one open bloom.
  • Make 2nd application 7 to 10 days later, but not later than when 50% of the plants have at least one open bloom.
  • Maximum of 2 applications per year.
  • Areas treated can be planted to potatoes as soon as practical. For other root crops and leafy vegetables the plant back interval (PBI) is 30 days. For all other crops, the PBI is 70 days.
  • Do not enter treated area for 24 hours.

Lance WDG


(boscalid)

Group 7
560 to 770 g/ha
(224 to 308 g/acre)

Apply in at least 100 L/ha (40 L/acre) of water.
7
  • Apply at 20 to 50% bloom.
  • Maximum of 2 applications per season.
  • Apply at 7 to 14 day intervals if conditions for disease development continue.
  • Do not enter treated area for 12 hours.
  • For crops not on the label, observe a plant-back interval of 14 days.

Rovral WP


(iprodione)
1.5 kg/ha
(0.6 kg/acre)
15
  • When applied for grey mould will reduce incidence of white mould.
  • Apply once when 50% of blooms have opened.
  • Apply in 300 L/ha (121 L/acre) of water.
  • Addition of a non-ionic adjuvant is recommended.
  • Group 2 fungicide
  • Do not enter treated are for 12 hours.

Rovral WDG

(iprodione)

Serenade Max


(Bacillus subtilis)
 
Note:  no longer produced.
 
smileyUsed in organics
3.0 to 6.0 kg/ha
(1.2 to 2.4 kg/acre)
0
  • Suppression only.
  • Check labels for details on application timing and intervals .
  • Also suppresses Grey Mould. See label for details.
  • smileySerenade Max (PCP# 28549) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.
 

Root Rot - Suppression

Serenade Soil

(QST 713 strain of dried Bacillus subtilis)
 
smileyUsed in organics.

 

2.7 to 14 L/ha (1.1 to 5.7 L/acre) 0
  • smileySerenade Soil (PCP# 30647) is OMRI-Canada listed.  Check with your certification body before using in an organic operation.

Surface applications:

  • Apply as a 15 cm band over the top of the seed row as a broadcast spray after planting.
  • Ensure incorporation into the seed zone within 24 hours of application via rainfall or overhead irrigation.

Post-plant applications:

  • After crop germination, additional applications may be made to the soil as a drench or spray directed towards the base of the plant.
  • Irrigate to move material into the seed or root zone.
  • Repeat at 21 to 28 day intervals.

* PHI = Pre-harvest interval.
BUFFERS – Refer to product label for buffer requirements. See also Pesticide Regulations and Safety section of this guide.
PESTICIDE GROUP DETAILS – see Pesticide Toxicity Table of this guide.

smileyOMRI-Canada = Organic Materials Review Institute of Canada

 

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