2. โข Some drivers of water quality monitoring
โข Scaling up
โข Defining clear goals & outcomes
โข Coordinated & adaptive monitoring
โข Stakeholder involvement & participation
โข Lessons learnt
3. โข Maryland implements restrictive STP
threshold for P mgt.
โข Pull back from ag. community led to
one of the first focused โresearch &
monitoringโ initiatives
1998
4. 1999
Joint US EPA & USDA Initiative requires
P loss assessment prior to applying P
๏ง Site specific assessment using a P index,
๏ง Soil-specific P threshold level, or
๏ง Soil test P recommendations
14. 2009
โข Often, not leading to a decline in STP nor
improvement in water quality
๏ง Legacy effects
โข Indices seen as โfarmer friendlyโ
โข The P Index was never meant to be the
solution to P management issues!!
16. 2015
โข 12:01, Jan. 1 - New MD Governor Hogan
retracts PMT
โข Jan. 29 - P Summit held at Wye College, MD
โข June 8 โ New PMT regulations went into
effect
17. โข In-field monitoring essential for farmer buy in
โข But we canโt monitor every field
โข Attempts to validate Indices identified a lack
of edge-of-field monitoring & models used to
fill gaps
โข Nonpoint sources models tended to lack
sufficient accuracy & canโt supplant
monitoring
18. โข EOF monitoring has moved to private lands
โข Creates difficulty in conducting โcause & effectโ
research & demonstration
โข Support program must be flexible enough to
accommodate day-to-day farm decisions
โข Essential to assess CP effectiveness
โข Essential for model calibration & validation
โข But, beware of liberties taken with freely
available data