Update Measurement Data

[giorgichi]

Update files for all measurement data. Comment about major changes when applicable.

• replace NA with n/a

[giorgichi]

Agronomic Data

• Added yield data at WILKIN sites for missing years
• Remove CRAWF from the Ag Data Commons database
• Switched plots 302 and 303 at MUDS1 to align with the crop rotation in 2008, 2009, and 2010
• Corrected yield data at DEFI_R and added missing yield in 1998 (thanks to Allred at el. 2014)

[giorgichi]

Soil Data

• Added new data for WILKIN sites (soil nitrate for all three sites and soil texture and bulk density at WILKIN3)
• Updated the plot identifier table to include new ids used in WILKIN sites for soil and agronomic data
• Standardized soil depth. Replaced NA with unknown for missing depths
• Corrected errors in percent sand. Replaced < 2.0 with actual percent of sand at HICKS_P
• Made soil texture all lower cases
• Removed redundant column (P_M3_ammount) from the final table since there was no data
• Added missing soil nitrate sampling date at STJOHNS in 2014 (found the estimated date in the field management data)