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Experts and stakeholders dispute data behind reported 30% drop in nitrogen leaching; panel urged to address gaps
Summary
A State Water Resources Control Board agricultural listening session drew sharp debate over whether the datasets used to calculate a reported 30% fall in nitrogen leaching in parts of the Central Valley are reliable enough to justify numeric limits.
A State Water Resources Control Board (SWRCB) agricultural expert-panel listening session on nitrogen management drew repeated criticism of the data underpinning a widely cited 30% decline in nitrogen leaching for parts of the Central Valley.
The dispute focused on whether recent datasets and methods are sufficient to justify numeric limits or to inform enforcement. Presenters from the Central Valley and several research organizations described large spatial and temporal gaps in reporting and urged the panel to treat the 30% figure cautiously.
“Si la data siendo postrada a nivel local, esto estima que el 30 por 100 ha disminuido… Esa no no dice completamente la habilidad,” said Iward Stewart Fryed, a presenter who reviewed trend analyses during the session,…
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