Table 3 Summary of five treatments used for the two replicate greenhouse growth and production experiments GP1(first replicate experiment) and GP2 (second replicate experiment), including additional positive control (F) in GP2 experiment.

From: A practical assessment of nano-phosphate on soybean (Glycine max) growth and microbiome establishment

 

Treatment

Soil Additions

Replicates

Added Solution

Experimental replicate including treatment

A

Control

20

Water

GP1, GP2

B

−P Control*

20

Plant-Prod 14-0-14

GP1, GP2

C

HA (15 ppm P)

32.4 mg of HA

20

Plant-Prod 14-0-14

GP1, GP2

D

nHA (15 ppm P)

32.4 mg of nHA

20

Plant-Prod 14-0-14

GP1, GP2

E

nHA (56.5 ppm P)**

153 mg of nHA

20

Plant-Prod 14-0-14

GP1, GP2

F

Soluble Pi (+P control)

5

Plant-Prod 20-20-20

GP2

  1. *P control contains no added Pi to the soil either at time of planting or in fertilizing solution.
  2. ** Final concentration of P in soil was based on recommended application rate of 20 kg/ha P2O5.