FREP Website Resources
Tag Archives: Nitrogen Management
2018 FREP Grant Cycle, Phase II
In this year’s competitive grant process, twelve project leaders were invited to submit full proposals. The proposals, listed below, are now under review by experts in the field and the Fertilizer Research and Education Program’s Technical Advisory Subcommittee (TASC). Proposals are evaluated based on scientific merit, applicability to California agriculture, and the potential for impact on stakeholders. Once the proposals have …
Research Update: Nitrogen management of organic leafy green vegetables on the Central Coast
Project Title: “Evaluation and demonstration of nitrogen management of organic vegetable production in leafy green vegetables on the Central Coast” Project Leaders: Richard Smith, Michael Cahn, and Tim Hartz Location: California Central Coast Overview: This project aims to evaluate the proportion of crop nitrogen (N) that is provided by soil organic matter mineralization in organic leafy vegetable production under coastal climate conditions. This research …
Event: Walnut Nitrogen and Irrigation Management Field Day
This field day will demonstrate the results of a FREP-funded study on evaluating the benefits of nitrogen management practices in walnuts. The objective of the study was to understand how split fertilizer applications affect nitrate movement below the root zone. This study also sought to quantify the benefits of efficient nitrogen management practices, including potential cost savings and groundwater protection. …
Event: Biochar Field Day
What: The use of biochar in agriculture is a topic that has been generating interest across California. New products are being developed for agricultural applications, and new research on the effects of biochar in cropping systems is underway at many universities. The California Department of Food and Agriculture’s (CDFA) Fertilizer Research and Education Program (FREP) is teaming up with Department …
Research Update: Improving Nitrate and Salinity Management in Almonds
Project Title: “Improving nitrate and salinity management strategies for almonds grown under micro-irrigation” Project Leaders: Patrick Brown (Professor) and Daniela Reineke (PhD student), Department of Plant Sciences, University of California, Davis Location: Statewide Overview: The primary goal of this project is to develop best management practices that allow California almond growers with micro-irrigation, to effectively leach salts while minimizing nitrate …
Research Update: Nitrogen Fertilizer Loading to Groundwater in the Central Valley
Research Project: Nitrogen Fertilizer Loading to Groundwater in the Central Valley. Thomas Harter et al. Status: Completed Issue: Nitrogen, in the form of nitrate, is the most common pollutant found in Central Valley groundwater. Nitrate has a maximum contaminant level (MCL) in drinking water of 45mg/L (NO3). Under natural conditions, groundwater nitrate may occur in concentrations up to 10mg/L. Nitrate …