Fig 1.
Experimental layout of the garden plots at the University of Saint Thomas campus.
Table 1.
Manure and municipal compost physical and chemical properties averaged for 2017 & 2018.
Fig 2.
Mean total crop yield wet biomass (g m-2 y-1) combined for years 2017 and 2018 across the different treatments for each crop type.
Note differences in scales for each crop.
Table 2.
Results of 3-way analysis of variance modeling log(yield) as a function of treatment, crop, year, and treatment*year interaction.
R2 = 0.69.
Fig 3.
Mass balance at plot level (of 4 m2) showing mean P inputs, mean P export via plant harvest, and loss via dissolved inorganic P in leachate.
Table 3.
Mean mass of P applied to 4m2 plot over two years, P recovered from crop yield, and P recovered from crops in excess of control treatment mean.
Table 4.
Results of 3-way analysis of variance modeling log(leachate P) as a function of treatment, crop, year, and treatment*year interaction.
R2 = 0.21.
Fig 4.
Mean leachate P fluxes ± 1 standard error across soil treatments per crop type.
Leachate P flux from grass plots outside the garden is also included for reference.
Table 5.
Soil chemical properties measured for initial homogenized soil (June 2017), and for different treatments at end of Year 1 (October 2017), and end of Year 2 (November 2018).