Sustainable Fertility Management Update on Nitrogen Management Plans for the Irrigated Lands Regulatory Program Parry Klassen Executive Director

Transcription

1 Sustainable Fertility Management Update on Nitrogen Management Plans for the Irrigated Lands Regulatory Program Parry Klassen Executive Director

2 Sacramento Valley Water Quality Coalition Bruce Houdesheldt California Rice Commission Tim Johnson Central Valley Coalitions San Joaquin County & Delta Water Quality Coalition Michael Wackman Westside San Joaquin River Watershed Coalition Joseph C. McGahan David Cory East San Joaquin Water Quality Coalition Parry Klassen Wayne Zipser Westlands Water Quality Coalition Southern San Joaquin Valley Water Quality Coalition 7 new coalitions

3 Coalition Overview In operation since ,949 Landowner / operators 719,446 irrigated acres Madera, Merced, Stanislaus, Tuolumne, Mariposa counties We manage group permit for our members

4 Regional Water Board Enforcement Irrigated Lands Regulatory Program Administrative Civil Liability (ACL) Complaints issued December 2014 $32,000 Madera County $8,600 Madera County Dozens more ACLs planned in coming months failed to submit a Report of Waste Discharge ( RoWD ) as required under Water Code section Fines Announced in January 2015 Madera: $31,000 Ceres: $51,000 4

5 What Is Now Required Member Responsibilities Complete Farm Evaluation (everyone) Complete Nitrogen Management Plan In high vulnerability groundwater area; submit to ESJ annually Certified by 3 rd party or grower trained (if developed) Low vulnerability keep on site; no certification required Sediment and Erosion Control Plan In areas identified as high vulnerability for erosion and sediment discharge Participate in annual outreach events 5

6 Waste Discharge Requirements Irrigated Lands Regulatory Program CDFA formed Task Force Develop Nitrogen Tracking and Reporting System Recommendations completed in December 2013 State Board formed Expert Panel Panel to answer questions posed by advisory group Final report to State Water Board on September 23, 2014

7 EXPERT PANEL RECOMMENDATION: REPORT A/R RATIO A = Nitrogen Applied Nitrogen applied can include nitrogen from any source R = Nitrogen Removed Nitrogen removed via harvest + Nitrogen sequestered in the permanent wood of perennial crops) Recommend ratio be averaged over multiple years

8 CV COALITIONS PREPARING PLAN TO PROPOSE REPORTING REQUIREMENTS Proposal and timeline due to Water Board on December 2015 Recommending Applied N/Yield (A/Y) Instead of A/R Ratio recommended by Expert Panel Considerations for choosing A/Y Growers know N applied, yield of crop per acre (average) Ease of calculations Allows comparison among same crop w/varying conditions Need to demonstrate that the nitrogen management approach is protective of groundwater

9 DATA COLLECTION Development of baseline nitrogen application information 1. Crop-specific 2. Integrated regionally 3. Provides basis for comparison of regional nitrogen application differences 4. Identification of multi-year trends 5. Addresses the probability of nitrogen leaving the crop root zone via deep percolation Information for Outreach and Education 1. Create management plans in certain areas. 2. Provide growers with understanding of key elements of on-farm nitrogen components 3. Show areas with high nitrates in groundwater 4. Nitrogen levels to irrigation supply water

10 REPORTING UNITS Management Unit Could include several fields with similar soils, irrigation methods, irrigation water nitrate levels, and irrigation management nitrate styles Individual Field The flexibility of reporting units provides growers with the ability to group fields as it makes operational sense and grants flexibility in the size of fields as it varies over time and season

11 Field Reporting Map Completed by Grower

12 NITROGEN MANAGEMENT PLAN APPROVED BY REGIONAL WATER BOARD DECEMBER 23, 2014 NMP In High Vulnerability Areas, CCA sign-off required ESJWQC Deadline for CCA sign-off March 1, 2016 Basic Elements of NMP Crop Field(s) or parcel identification Nitrogen applied to management unit Estimate of nitrogen in Irrigation water Compost/manure Residual in the soil In High Vulnerabilty Areas, CCA sign off required

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27 Proposed reporting of nitrogen plan worksheet information: Submit summary form to Coalition Coalition compiles ratios; separates into crops, Township sections (6 sq. miles) CCA or self certify in high vulnerability areas

28 Nitrogen Management Plan Certification For members with fields that are high vulnerability to groundwater contamination Two options for NMP certification 1. Sign off by professional Certified Crop Advisor (CCA) Professional agronomist Soil scientist OR 2. Grower CDFA Certification Member (or member representative) can be certified to certify your own NMP

29 Nitrogen Management Plan Certification For members with fields that are high vulnerability to groundwater contamination To obtain NMP certification, a grower must Attend a four-hour session in nitrogen management Pass a 30-question test at the end of the session. NMP Trainings are taught by CCAs who have been trained by UC Extension Personnel and are experts in nitrogen management. Over the next 3 years, growers must attend Continuing Education meetings to maintain the certification. CURES Managing 3-year pilot program in Central Valley through FREP grant Create speakers bureau of CCAs to provide training Working with coalitions on grower training meetings

30 Management Practice Effectiveness Program (MPEP) Confirm that management practices implemented to improve groundwater quality are working Are agricultural management practices protective of groundwater? Modify practices if needed Implemented by CV Coalitions either individually or combined effort Coordinated effort by coalitions/commodity groups to complete Share study expenses among coalitions willing to collaborate ESJWQC forming group made up of 4 other coalitions

31 Northern Central Valley Coalitions form MOU to Complete Management Practice Studies Question: Are farming practices protective of groundwater? Sacramento Valley Water Quality Coalition San Joaquin County & Delta Water Quality Coalition Westside San Joaquin River Watershed Coalition East San Joaquin Water Quality Coalition Westlands Water District Coalition

32 Selection of Management Practices Coordinate with commodity groups of selected crops what best practices are Select practices to study based on: Current usage by growers Potential to be adopted by large percentage of growers Economical Practical Ability to measure effectiveness

33 Examples of Potential Measurements in MPEP Field Studies N Applied as: Commercial fertilizer Cover crops/manure/comp ost Irrigation water N Harvested with crop N stored (where applicable) N in Vadose Zone Soil cores N in Leachate Suction Lysimeters Also measure water applied through irrigation and rainfall on site Groundwater

34 Parry Klassen