University of Florida

2009 Prestige Red

Growth Regulators Applied / Height graph

Graph shows projected plant heights during production of the crop. Dots are plotted actual height each week. Arrows indicate when PGRs are applied with details in the weekly notes. We use the “late” graphical tracking curve and heights are from bench to height of growing tip. Heights are plotted from date of pinching to projected date of finish.

Growth regulator height graph


Prestige Red December 1st12/01

These Prestige Red are finishing close to the schedule and the plants look good. The strategy of using sprays during September and then shifting to Bonzi drench applications worked very well. For a warm year, height control was not too difficult and the total amount of chemical used was not too great.

Prestige Red November 24th11/24

This crop is working out well in spite of our warm temperatures. It should finish on time next week.

Prestige Red November 17th11/17

These plants look good and we project them finishing at about 16 inches. The crop should finish about on schedule.

Prestige Red November 10th11/10

This crop looks good. There is visible bud on all the plants and color development is only slightly behind last year. At this point we are applying another Bonzi drench at 0.1 ppm. We hope a little more control will help insure the crop does not finish too tall and make it even more likely we can finish the crop without doing a late drench.

Prestige Red November 3rd11/03

It was good that we put on the drench last week to help control elongation during the hot week. The plants look good and heights are good. A few of the plants are showing first color. We are applying another early Bonzi drench at 0.1 ppm. This should give a little more control and we might be able to finish the crop without applying a late drench.

Prestige Red October 27th10/27

We are expecting this crop to be delayed due to the amount of hot weather we have had. Also with the warm temperatures the next week, these plants should continue growing. We are applying a Bonzi drench at 0.1 ppm this week to slow them a little. Hopefully, this will allow us to delay the late drench until more bract size has developed. By this week last year we had first color on Prestige Red.

Prestige Red October 20th10/20

This crop has slowed down now after 3 consecutive weeks of PGR treatments. We will see how it develops.

Prestige Red October 13th10/13

We spent some time deciding what to do with this crop. Under normal temperatures and with the amount of PGR applied the past two weeks, we would not have treated this week and waited to see where they would be next week. However, we anticipate significant heat delay in this crop, which increases the vegetative growth occurring before initiation. You can see how much PGR was needed in the heat delay year of ’07. We are applying another Bonzi drench at 0.1 ppm this week. The plan is that this should provide good control and reduce the amount of PGR needed later.

Prestige Red October 6th10/06

This crop did not react very much to the spray last week. We need to make sure they slow down, but it is after our normal cut off date for using B-Nine. Cycocel by itself will not have much effect. So, we are shifting to Bonzi drench applications and applying 0.1 ppm this week. We will likely need to do this 1-2 more times over the next 3 weeks.

Prestige Red September 29th9/29

These plants look good, but we need to slow them down some. We are at the end of our period for using B-Nine. To obtain more control now, we are spraying with the medium B-Nine Cycocel rate - B-Nine at 1,500 ppm and Cycocel at 1,250 ppm.

Prestige Red September 22nd9/22

The spray last week has slowed the growth of these Prestige Red. Now, we will see what they do the next couple of weeks.

Prestige Red September 15th9/15

The growth of these Prestige Red is fairly typical of healthy plants. This week we are spraying the medium rate of B-Nine and Cycocel which is 1,500 and 1,250 ppm respectively.

Prestige Red September 8th9/08

This crop of Prestige Red is also breaking fast. We could apply a low PGR spray this week, but have decided not to. We will likely start PGR applications next week.

Prestige Red September 1st9/01

This schedule has worked well for Prestige Red in the past. If it is a cool year they will finish a little ahead. If it is a warm, heat-delay year they could be a little later than this.