Project Overview
Commodities
- Additional Plants: herbs
- Miscellaneous: other
Practices
- Crop Production: fertigation
- Education and Training: on-farm/ranch research
- Soil Management: nutrient mineralization
Proposal summary:
Farmers in the Pacific Northwest face mounting challenges, including water scarcity, rising input costs, declining soil health, reliance on chemical fertilizers, and increasing land prices (Crawford et al., 2020; USDA-NRCS, 2021). Simultaneously, the U.S. imports nearly all saffron (~46 tons in 2021), creating a high-value opportunity for domestic growers (FAO, 2022; USDA, 2022). Saffron (Crocus sativus) is well-suited for smallholder, low-water systems, yet cultivation success depends on region-specific knowledge of soils, rainfall patterns, and microclimates. Currently, farmers lack data on how saffron responds to irrigation, soil type, fertilization strategies, soil moisture, and natural amendments.
This project addresses critical knowledge gaps by evaluating amendments that (1) support plant health, (2) reduce fungal and bacterial infections, (3) increase stigma yield and bioactive compound concentration, (4) improve water-use efficiency, (5) supply essential trace minerals, and (6) rebuild long-term soil fertility and microbial health (Hosseini et al., 2020; Ashrafi et al., 2021). Without this guidance, growers cannot reliably produce high-quality saffron or capture domestic market opportunities.
Saffron offers a low-water, high-value crop for smallholders, with first-quality saffron selling for $20-$60 per gram (Saffron Association, 2021). By developing data-driven cultivation practices tailored to the Pacific Northwest, this project will enable farmers to optimize yields, maintain soil health, and increase long-term farm resilience.
Equally important, the project's outreach plan ensures that findings are accessible to regional growers through field days, workshops, multimedia resources, and Extension partnerships. By directly engaging farmers, tribal agricultural programs, and community networks, we will provide practical guidance on implementing regenerative practices, improving soil health, and increasing saffron profitability. This applied knowledge transfer empowers farmers to adopt innovations, strengthen local food systems, and replicate successful strategies across diverse Northwest landscapes.
Project objectives from proposal:
Research Objectives (6/1/2026 - 11/30/2027)
- Agronomic Performance: Evaluate four
soil treatments (alpaca pellet tea, spent mushroom substrate tea,
beneficial microorganism inoculant, untreated control) on saffron
growth, flower number, stigma yield, and corm development,
measuring 20 plants per bed monthly and at harvest. Target:
Identify the highest-performing input by 11/30/2027.
- Soil Health and Water Efficiency:
Maintain 25% volumetric soil moisture; measure irrigation demand,
soil microbial activity, and fungal infection incidence monthly.
Target: Determine which treatments improve soil function and reduce
water use by 11/30/2027.
- Quality and Bioactive Compound Assessment: Quantify crocin, crocetin, picrocrocin, and safranal in floral parts using HPTLC; generate treatment-specific profiles by 11/30/2027.
- Economic Evaluation: Calculate input
costs, yield-per-dollar, and projected gross revenue for each
treatment; identify the most cost-effective approach for
small-scale growers by 11/30/2027.
- Scalability and Protocol Development:
Develop replicable production protocols, soil management
guidelines, and a framework to expand saffron from high tunnels to
open fields, supporting cooperative development by 11/30/2027.
Educational Objectives
- Demonstrate the impact of sustainable
biological amendments on saffron growth, yield, quality, and
water-use efficiency by 11/30/2027.
- Teach growers to assess saffron
quality and economic performance through bioactive compound
analysis and yield-per-dollar metrics by 11/30/2027.
- Provide replicable cultivation
protocols for transitioning saffron from high tunnels to open-field
systems, promoting long-term soil health by 11/30/2027.
- Support regional knowledge sharing and cooperative development through the dissemination of best practices, production benchmarks, and marketing strategies by 11/30/2027.