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Douglas Bailey, Professor, and Brian Whipker, Extension Horticulture Specialist - page 6 / 16

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Table 1, continued.

Crop

Bedding Plants (Not specifically listed in this table)

Purpose To control plant height

6 to 66 ppm spray (2.9 to 32 fl oz/gal). Use 15 ppm spray as a base rate and adjust as needed.

See Ageratum.

0.06 to 0.12 mg a.i. drench for a 4 inch pot (0.5 to 1 fl oz/gal of drench solution; apply 2 fl oz/4 inch pot)

Drench volumes and mg a.i. vary with pot size. Contact floricultural specialists at NC State University.

Precautions & Remarks

Product A-Rest

Application Method & Rate

B-Nine + Cycocel

800 to 5,000 ppm B-Nine (0.13 to 0.79 oz/gal) + 1,000 to 1,500 ppm Cycocel (1.08 to 1.63 fl oz/gal) applied as a tank mix spray

It is recommended to use the highest rate of Cycocel that does not cause excessive leaf yellowing, and then adjust the B-Nine rate up and down within the labeled range to attain desired level of height control.

Bonzi

30 ppm spray (0.96 fl oz/gal)

Users should conduct trials on a small number of plants, adjusting the rates as needed for desired final plant height and duration of height control. Not recommended for use on fibrous begonia or vinca.

0.118 mg a.i. drench for a 6 inch pot (0.032 fl oz/gal of drench solution; apply 4 fl oz/6 inch pot)

Drench applications are recommended only for bedding plants in 6 inch or larger containers. Not recommended for use on fibrous begonia or vinca.

800 to 3,000 ppm spray (0.87 to 3.25 fl oz/gal)

Users should conduct trials on a small number of plants, adjusting the rates as needed for desired final plant height and duration of height control.

Cycocel

Sumagic

1 to 50 ppm spray (0.26 to 12.7 fl oz/gal)

Users should conduct trials on a small number of plants, adjusting the rates as needed for desired final plant height and duration of height control.

3 to 35 ppm spray (1.5 to 17 fl oz/gal)

See Ageratum.

Drench plug flats with a 0.5 to 1 ppm solution (0.25 to 1 fl oz/ gal)

For uniform application, use a subirrigation delivery system. Plug trays should not be excessively dry prior to the subirrigation treatment.

Bedding Plant Plugs

(Not specifically listed in this table)

To control plant height

A-Rest

B-Nine

1,500 to 2,500 ppm spray (0.23 to 0.39 oz/gal)

Users should conduct trials on a small number of plants, adjusting the rate as needed for desired final plant height and duration of height control. Can be used at the beginning of the first true leaf stage through the finishing stage.

B-Nine + Cycocel

800 to 5,000 ppm B-Nine (0.13 to 0.79 oz/gal) + 1,000 to 1,500 ppm Cycocel (1.08 to 1.63 fl oz/gal) applied as a tank mix spray

It is recommended to use the highest rate of Cycocel that does not cause excessive leaf yellowing, and then adjust the B-Nine rate up and down within the labeled range to attain desired level of height control.

Bonzi

5 ppm spray (0.16 fl oz/gal)

Users should conduct trials on a small number of plants, adjusting the rate as needed for desired final plant height and duration of height control. Plants should develop 1 to 2 true leaves prior to first application.

Begonia

To control plant height

A-Rest

3 to 15 ppm spray (1.5 to 7.3 fl oz/gal)

B-Nine

2,500 to 5,000 ppm spray (0.39 to 0.79 oz/gal)

Bleeding Heart

To control plant height

A-Rest

65 to 132 ppm spray (31.5 to 64 fl oz/gal

Cycocel

400 to 1,500 ppm spray (0.43 to 1.63 fl oz/gal)

Users should conduct trials on a small number of plants, adjusting the rates as needed for desired final plant height and duration of height control.

Sumagic

0.5 to 10 ppm spray (0.13 to 2.6 fl oz/gal)

Users should conduct trials on a small number of plants, adjusting the rate as needed for desired final plant height and duration of height control. Plugs can be especially sensitive to Sumagic.

See Ageratum.

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