Perry's Perennial Pages

Fertility and Media Effects on Perennial Growth 2003

Leonard Perry and Andrea Luchini
Extension Professor, Graduate Assistant respectively
University of Vermont

Materials and Methods

A study was begun in 2003 in the nursery outside the UVM greenhouses in Burlington, Vermont, to examine the effects of various media and fertility on perennial growth in containers. Treatments included various combinations of 5 media and 4 fertilizers:
 
Media Fertility
ProMix BX Osmocote brown (5-6mo, 15-9-9, 8lb/cuyd=6.5T/cuft)
Stender, coarse Osmocote red (3-4mo, 16-11-11, 6lb/cuyd=5T/cuft
Nutripeat perennial 15-16-17 (125ppmN, 1x/wk)
Scotts perennial Squanto’s Secret Fish fertilizer (2T/gal, 1x/wk)
Fafard 3BC  
   

Plants were obtained as plugs or small plants in early summer, potted into jumbo squares with appropriate treatments, with liquid fertilizers continued until data collection Oct. 15. There were 6 replicate pots of each of 3 species, for each treatment. Dry weight were taken and analyzed by Analysis of Variance, with means separated by Tukey’s procedure. In the following tables, means followed by the same letter are not statistically different. In addition, specific linear orthogonal contrasts are shown for specific comparisons.
 
 

Conclusions

Fertility

Media

Results

Dianthus ‘Arctic Fire’
 
Treatment Dry Weight, g
Fafard + Red
31.4a
Stender + Brown
28.0ab
Fafard + Brown
27.6ab
ProMix + Red
24.9abc
Stender + Red
24.6bc
ProMix + Brown
23.4bcd
Scotts + Red
23.1bcd
Compost + Red
20.6cde
ProMix + 1/2 Red
17.6def
ProMix + Fish
14.8efg
ProMix + Peters
13.2fg
Compost + Fish
8.4g
   

 

Statistical Contrasts (ns=not significant, *significant, **highly significant, bold =highest)

Fertility

** Osmocote vs liquid (ProMix)

ns liquid vs fish (ProMix)

** red osmocote vs fish (ProMix and Compost)

** ½x vs 1x rate (ProMix, red osmocote)

ns osmocote red vs brown (Promix+Fafard+Stender)

Media

* Nutripeat vs ProMix (Red Osmocote and fish)

ns Stender vs Fafard+ProMix+Scotts (Red Osmocote)

** Fafard vs Stender+ProMix+Scotts (Red Osmocote)

ns ProMix vs Stender+Fafard+Scotts (Red Osmocote)

* Scotts vs Stender+Fafard+ProMix (Red Osmocote)
 
 

Results

Geranium sanguineum ‘Max Frei’
 
Treatment Dry Weight, g
ProMix + Brown
5.2a
Stender + Brown
4.5ab
Stender + Red
4.4abc
ProMix + Red
4.0abcd
ProMix + 1/2 Red
3.8abcd
Fafard + Brown
3.4abcd
ProMix + Fish
3.3abcd
ProMix + Peters
3.3abcd
Fafard + Red
3.2abcd
Compost + Fish
2.3bcd
Compost + Red
2.2cd
Scotts + Red
2.1d

Statistical Contrasts (ns=not significant, *significant, **highly significant, bold =highest)

Fertility

* Osmocote vs liquid (ProMix)

ns liquid vs fish (ProMix)

ns red osmocote vs fish (ProMix and Compost)

ns ½x vs 1x rate (ProMix, red osmocote)

ns osmocote red vs brown (Promix+Fafard+Stender)

Media

** Nutripeat vs ProMix (Red Osmocote and fish)

* Stender vs Fafard+ProMix+Scotts (Red Osmocote)

ns Fafard vs Stender+ProMix+Scotts (Red Osmocote)

ns ProMix vs Stender+Fafard+Scotts (Red Osmocote)

** Scotts vs Stender+Fafard+ProMix (Red Osmocote)
 

Results

Hemerocallis ‘Stella d’Oro’
 
Treatment Dry Weight, g
Stender + Brown
3.7a
Fafard + Brown
3.6ab
Fafard + Red
3.6ab
Scotts + Red
3.2abc
ProMix + Brown
3.2abc
Stender + Red
2.7abcd
ProMix + Red
2.2 bcde
Compost + Red
1.9cde
Compost + Fish
1.4de
ProMix + 1/2 Red
1.4de
ProMix + Peters
1.3de
ProMix + Fish
1.0e

Statistical Contrasts (ns=not significant, *significant, **highly significant, bold =highest)

Fertility

** Osmocote vs liquid (ProMix)

ns liquid vs fish (ProMix)

* red osmocote vs fish (ProMix and Compost)

ns ½x vs 1x rate (ProMix, red osmocote)

** osmocote red vs brown (Promix+Fafard+Stender)

Media

ns Nutripeat vs ProMix (Red Osmocote and fish)

ns Stender vs Fafard+ProMix+Scotts (Red Osmocote)

ns Fafard vs Stender+ProMix+Scotts (Red Osmocote)

* ProMix vs Stender+Fafard+Scotts (Red Osmocote)

ns Scotts vs Stender+Fafard+ProMix (Red Osmocote)



This study made possible by support from D.S. Cole Greenhouses, New England Grows, and the Vermont Agricultural Experiment Station.

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