Vegetable Production Guide

Celery
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Table 3 Celery Disease Control

This section was updated - 06 January 2021

Table 3 Celery Disease Control

 

Product

Rate

PHI*

Comments

Early and Late Blight

Bravo 500


(chlorothalonil)

Group M		 1.6 to 4.0 L/ha
(0.6 to 1.6 L/acre)		 7
  • See label as rates vary with diseases and spray schedule.
  • For Early Blight control, application rate should not exceed 2.4 L/ha (1.0 L/acre).
  • Check label for application intervals.
  • Do not enter treated area for 48 hours.

Dithane DG Rainshield NT


(mancozeb)		 2.25 kg/ha
(0.9 kg/acre)		 14
  • Wash and trim before packing.
  • Repeat at 3 to 5 day intevals when seedlings first emerge and weekly after plants are set in field.
  • Group M fungicides.

Dithane F-45


(mancozeb)		 3.8 L/ha
(1.5 L/acre)

Copper 53W


(copper sulphate)

Group M		 3.8 kg/ha
(1.5 kg/acre)		 1
  • Apply when plants are 10 to 12 cm high, and vary rates according to leaf development.
  • Repeat at 5 day intervals.
  • Maximum of 5 applications per year.
  • Do not enter treated area for 48 hours.

Copper oxychloride 50


(copper oxychloride)

Group M		 4.0 kg/ha
(1.6 kg/acre)		 1
  • Repeat at 7 to 10 day intervals.
  • Start applications when plants are 5 cm tall.
  • Apply in 1000 L/ha (405 L/acre) of water.
  • Do not enter treated area for 48 hours.

Manzate DF


(mancozeb)

Group M		 2.25 to 3.25 kg/ha
(0.9 to 1.3 kg/acre)

Apply in 200 to 1000 L/ha (80 to 405 L/acre) of water		 14
  • Do not apply where runoff is likely to occur.
  • Wash and trim before packing.
  • Repeat at a 3 to 5 day interval when seedlings first emerge and at 7 days after plants are set in field.

Penncozeb 75DF

(mancozeb)

 2.25 kg/ha
(900 g/ha)		 14
  • Repeat at 3 to 5 day intervals until plants are set in field.
  • Continue field applications on a weekly schedule.
  • Do not enter treated area for 24 hours.
  • Strip, trim and wash celery at harvest.
  • Group M fungicides.

Penncozeb 75DF Raincoat

(mancozeb)

Polyram DF


(metiram)

Group M2		 2.25 to 3.25 kg/ha
(0.9 to 1.3 kg/acre)		 14
  • Use higher rate during periods of rain or heavy dew.
  • Wash and trim before packing.
  • Repeat at 7 day intervals.

Thiram 75WP


(thiram)		 1.5 kg of product in 1000 L of water 7
  • For use in plant beds.
  • Also controls Rhizoctonia and damping-off.
  • Apply 70 to 105 litres per 100 m2 at 3 day intervals.
  • Group M fungicides.

Granuflo-T


(thiram)

Echo 90 DF


(chlorothalonil)

Group M		 0.9 to 2.3 kg/ha
(400 to 900 g/acre)		 7
  • See label as rates vary with spray schedule.
  • See label for seed bed rate.
  • Do not apply more than 9 times per season.
  • Do not enter treated area for 48 hours.
  • Do not apply within 10 days before or after an oil application.

Echo 720


(chlorothalonil)

Group M		 1.1 to 2.8 L/ha
(450 to 1100 mL/acre)

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.

Pristine WG


(boscalid and pyraclostrobin)

Group 7 & 11		 1.0 kg/ha
(400 g/acre)		 0
  • Suppression only.
  • Repeat at 7 to 14 day interval.
  • Apply only once for suppression of early blight.
  • Maximum of 2 applications per season for suppression of late blight.
  • For hand harvesting and thinning do not enter treated area for 9 days.
  • For all other activities do not enter treated area for 24 hours.

Flint

 

(trifloxystrobin)

Group 11

190 to 210 g/ha (77 to 85 g/acre)

Apply in 280 L/ha (115 L/acre) of water at 241.5 kPa 

 7
  • Controls Cercospora early blight and Septoria late blight.
  • Use high rate for Septoria late blight.
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 840 g/ha (340 g/acre) of product per season.
  • Do not make more than 4 applications per season.
  • Observe a plantback interval of 30 days for crops not listed.

Fontelis


(penthiopyrad)

Group 7

 1.0 to 1.75 L/ha
(400 to 710 mL/acre)

Apply in 110 L/ha (45 L/acre) of water 		3
  • Controls Septoria late blight only.
  • Repeat at 7 to 14 day intervals.
  • Do not apply more than 5.25 L/ha (2.2 L/acre) per season.
  • Do not re-enter for 12 hours.
*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 Appendix E. Pesticide Toxicity Table of this guide.

 

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