pga plus research at university of florida (trial 1)

protocol:

organica plant growth activator plus (pga plus) was applied to 10 week - old lisianthus "maurine blue" grown in 6 packs containing a peat based medium.

a randomized complete block design with 6 replications consisting of an individual six-pack per treatment and non-treated control replication was used. the plants were maintained at 28 degrees c / 82 degrees f and exposed to a 12 hour / 12 hour light / dark cycle.

the plants were inoculated with 15 ml soil drench containing 1x 10 to the 6th microconidia / ml of the active fungal pathogen fusarium oxysporum (a very high dose).

plants were examined for disease incidence and mortality once a week for 6 weeks.

applications rates & timing of pga plus

1) initial application:

occurred 7 days after transplantation of lisianthus into 6 packs. one (1) pound of pga plus was dissolved in 100 gallons of water and 10 ml of this solution was applied as a soil drench. this rate equates to 2 oz. per 1000 sq. ft or standard label rate.

2) subsequent applications:

occurred 24 hours prior to inoculation of the active fungal pathogen fusarium oxysporum. during the 6 week trial pga plus was applied at 2 week intervals. for all of the subsequent applications two (2) ounces of pga plus was dissolved in 100 gallons of water and 10 ml of this solution was applied as a soil drench. this equates to 0.25 ounces per 1000 sq. ft. or one-eighth the label rate.

sampling of test results

product	final mortality	aumpc	plant height (cm)
control	69.4 %	1220.2	10.5
ateze	61.1 %	1171.0	10.2
pga plus	41.6 %	399.5	12.4
heritage	25.0 %	295.0	11.6

aumpc is an indicator of how rapidly plants die, high aumpc # indicates rapid death rate pga plus applied initially at label rate subsequent applications were at (1/8 label rate) ateze was applied at 26 oz. per 100 gallons for all applications (full label rate) heritage was applied at 0.9 oz. per 100 gallons for all applications (full label rate)

test performed by dr. bob mcgovern @ university of florida - ifas

for more information on the effectiveness of pga+, please see the latest research studies -

lisianthus "maurine blue"- pga plus research - university of florida (trial 2)

basil seed research using pga (plant growth activator) - university of florida

baron kentucky bluegrass - pga plus research at rutgers

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