Vegetable Production Guide

Beets
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Table 1 Beets Weed Control

This section was updated - 22 September 2021

Table 1 Beets Weed Control

 

Product

Rate

PHI*

Comments

Pre-plant Incorporated

Pyramin FL

(pyrazon) Group 5
Light soils: 8.25 L/ha (3.3 L/acre)

OR

Medium or heavy soils: 10.25 L/ha (4.1 L/acre)
N/A
  • Do not follow with a pre-emergence or post-emergence application of Pyramin FL or Pyramin DF.
  • Make application in spring.
  • Incorporate to a depth of 5 cm immediately after seeding.
  • For band application, the seed-drill must be attached behind the spray nozzle and incorporating equipment.
  • Use 200 to 500 L/ha (80 to 200 L/acre) of water.
  • Controls black nightshade, chickweed, knotweed, lady’s thumb, lamb’s-quarters, pigweed, purslane, shepard’s purse, wild buckwheat, and others.
  • Do not rotate with any other crop other than beets for 12 months after application.
  • Do not apply to soils with less than 3% organic matter.
  • Do not enter treated area for 12 hours.

Pyramin DF

(pyrazon)

Group 5
Light soils: 5.5 kg/ha 2.2 kg/acre)

OR

Medium or heavy soils: 6.75 kg/ha (2.7 kg/acre)

Pre-emergent (to weeds and crop)

Pyramin FL

(pyrazon) Group 5
Light soils: 8.25 L/ha (3.3 L/acre)

OR

Medium or heavy soils: 10.25 L/ha (4.1 L/acre)
N/A
  • See PPI for weeds controlled.
  • Do not apply pre-emergence if Pyramin FL or Pyramin DF has been applied PPI.
  • Do not follow with a post-emergence application of Pyramin FL or Pyramin DF
  • Apply after seeding before beets and weeds germinate.
  • At least 1.25 cm of rain is necessary after applicaiton for good weed control.
  • When banding, apply a minimum of 15 to 20 cm band.  See label for chart details of product rates and rates of water  needed for various row spacing and widths. 
  • Use 200 to 500 L/ha (80 to 200 L/acre) of water.
  • Do not apply to soils with less than 3% organic matter.
  • Do not enter treated area for 12 hours.

Pyramin DF

(pyrazon)

Group 5
Light soils: 5.5 kg/ha 2.2 kg/acre)

OR

Medium or heavy soils: 6.75 kg/ha (2.7 kg/acre)

Dual II Magnum


(S-metachlor)

Group 15
1.25 L/ha
(500 mL/acre)

Apply in 150 L/ha (60 L/acre) of water
 
  • Controls nightshade, barnyard grass, foxtail.
  • Suppresses redroot pigweed.
  • Do not make more than 1 application per year.
  • Irrigate ½ inch of water after application if rainfall is not expected to activate.
  • If direct-seeding, rolling the planted area before spraying is recommended.
  • Check label for precautions to prevent crop injury.
  • Do not enter treated area for 12 hours.

Post-emergence

Pyramin FL


(pyrazon)
8.25 L/ha (3.3 L/acre) for all soil types







 
N/A
  • See PPI for weeds controlled.
  • Do not apply post-emergence if Pyramin FL or Pyramin DF has been applied PPI or pre-emergence.
  • Apply with Citowett Plus at 250 mL/100L water and apply in 300 to 400 L/ha (120 to 160 L/acre).  Use 275 to 350 kPa pressure. 
  • See PPI for weeds controlled.
  • Apply after the first true leaf of the beet is 2.5 cm long but not larger than the 3-true-leaf stage.
  • Do not apply when beets are in the cotyledon stage.
  • When banding, apply a 15 to 20 cm band, centering the band over the row.  See label for details on product and water rates and rates of oil. 
  • Do not rotate with any other crop other than beets for 12 months after application.
  • Do not apply to soils with less than 3% organic matter.
  • Application during very hot weather may cause slight crop injury.
  • Group 5 herbicides.

Pyramin DF


(pyrazon)
5.5 kg/ha (2.2 kg/acre) for all soil types

Upbeet


(triflusulfuron methyl)

Group 2

Broadcast:


36 g/ha
(15 g/ac)
30
  • Use with a non-ionic surfactant such as Agral 90, Agsurf or Citowett Plus, at 0.25% v/v in a spray volume of 90 to 400 L/ha (35 to 160 L/ac).
  • Maximum of 3 applications per year.
  • Apply post-emergent to the crop when garden beets are in the 2 to 4 leaf, 4 to 6 leaf and 6 to 8 stages.

  • Do not apply more than 108 g/ha (44 g/ac) per year.
  • Check label for rates when applying as a band treatment.
  • Observe a plant back interval of 30 days for beets and one year for cereals.
  • For all other crops, follow plant back precautions on the label. Carry out a field bioassay to prevent crop injury in the year following use.

Betamix B EC


(desmedipham & phenmedipham)

Group 5
1.15 to 1.75 L/ha
(465 to 710 mL/acre)

Apply in 100 to 200 L/ha (40 to 80 L/acre)
30
  • Controls lamb’s-quarter, wild buckwheat, green and yellow foxtail, mustard and pigweed up to the 4 leaf stage.
  • Use also, a pre-plant or pre-emergence herbicide (see above) for control of nightshade, kochia and stinkweed up to the 2 leaf stage.
  • Apply 1st spray when weeds have reached the cotyledon stage.
  • Repeat at a 5 to 7 day interval or when there is another flush of weeds.
  • Maximum 3 applications per season.
  • Do not apply through irrigation.
  • Do not spray when dew is present.
  • Rainfall or irrigation within 6 hours will reduce efficacy.
  • May cause temporary growth retardation, chlorosis or tip burn.
  • May cause crop injury if applied when plants are stressed.
  • Do not graze crop.
  • Do not enter treated area for 24 hours.

Aim EC

(carfentrazone-ethyl)

Group 14

37 to 117 mL/ha
(15 to 47 mL/acre)

Apply in 100 L/ha (40 L/acre) of water
1
  • Controls annual weeds.
  • Must be applied using hooded sprayers to weeds between the rows of the emerged crop.
  •  Use an adjuvant such as Agral 90 or Agral-Surf at 0.25% v/v (0.25 L/100 L of spray solution) or Merge at 1% v/v (1 L/100 L of spray solution).
  • PRECAUTION:  crop injury will occur when spray drift is allowed to come in contact with green stem tissue or leaves.
  • Apply only once per growing season.

Poast Ultra plus Merge at the following rates:

49
  • Annual Bluegrass is not controlled.
  • Apply when annual weeds are in the 1 to 6 leaf stage and quackgrass is in the 1 to 3 leaf stage.
  • Apply in 50 to 200 L/ha (20 to 80 L/acre) of water.
  • Up to two applicatons per year to a total maximum applicatoin rate of 1.1 L/ha (445 mL/acre) per season.
  • Pressure varies with various water volumes, see label for detail.
  • Group 1 herbicide.
  • Do not enter treated area for 12 hours.
  • There is a 30 day plant back restriction on crops not found on the label.
 

Poast Ultra

Merge
Annual grasses
(incl volunteer cereals)
320 mL/ha
(130 mL/ac)
0.5- 1.0 L/ha
(0.2-0.4 L/ac
Annual grasses & quackgrass suppression 470 mL/ha
(190 mL/ac)
0.5-1.0 L/ha
(0.2-0.4 L/ac
Quackgrass 1.1 L/ha
(445 mL/ac)
1.0-2.0 L/ha
(0.4-0.8 L/ac
*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.

 

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