Reports & Data
2015 - please see DRAFT of final report.
2014 - as the serious drought continues, we continue to help show water conservation techniques and principles through high frequency irrigation of both surface drip and subsurface drip irrigation systems. Harvest is forecast to occur about the same time as last year, around the 4th week of October.
2013 - continued sampling of leaves, soil, canopy , etc. for research on the two methods of drip irrigation and N-fertigation have continued. Harvest date was October 21 and 22, 2013.
2012 - communication between dataloggers has been established to share ETc data hourly from the lysimeter for irrigation scheduling of the field treatments. A low level of pruning was performed in early March and a few late rains has postponed initial irrigation until mid-April. Leaf samples continue to be sampled and analyzed, canopy size is measured via light bar and overhead camera. Fertilizer injections have been daily with each irrigation, applied equally through SDI and DI systems beginning in May.
2011 - one of the wettest winters on record: 15.9 inches fell between October1, 2010 and the end of March, 2011 with a record-breaking 7.1 inches in December, 2010 alone.
Bi-monthly leaf samples were initiated for tissue nutrient analysis and the irrigation system was injecting fertilizer automatically daily. The irrigation control system was semi-automatic, with the lacking component being the communication of ETc from the lysimeter datalogger and to the controlling datalogger. This was updated manually.
2010 - trees were planted at the end of April and water was applied by tanking to each tree individually since the irrigation system was not completed. No treatments were initiated and the only data collection was tree trunk circumference in the fall.
Plot map: Revised Plot Layout-12810
Access to the Secured Raw Data is reserved for the project Principal Investigators and research cooperators. If you are interested in the raw data, please contact a member of the 'Who's Involved' list.