Seasonal Dynamics of N, P, and K in an Organic and Inorganic Fertilized Willow Biomass System

Table 1

Precipitation temperature and gravimetric soil moisture content in the sampling periods when PRS probes were installed in shrub willow plots treated with organic wastes and commercial fertilizers.

Code	Burial period	Season	Total; rainfall/month (mm)	Average; temp./month (°C)	Gravimetric soil moisture content ()
Sept.	Sept. 24–Oct. 7, 2008	Fall	189.74	14.61	0.32
May	May 20–June 2, 2009	Spring	89.92	11.97	0.18
Aug.	August 10–23, 2009	Summer	198.4	19.6	0.39
Oct.	October 11–24, 2009	Fall	112.78	7.54	0.29

Temperature and precipitation data for the burial periods was downloaded from a nearby weather station: http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwDI~StnSrch~StnID~20019716.