Quality you can trust since 1958
Fertilizer, crop protection & PCA services in Rio Oso, CA
Crop nutrients, crop protection, and agronomic consulting for growers across Sutter, Yuba, Placer, Butte, Yolo, and Sacramento counties, and beyond.
65+
Years serving Sacramento Valley growers
6+
Counties served from Rio Oso
PCA
Licensed Pest Control Advisers on staff
19+
Grower services, from sampling to rentals
What we do
Every crop need, one trusted location
We guide growers toward the most effective products and practices, then deliver them.
Crop Nutrients
Dry and liquid fertilizer, fertility recommendations, and the equipment to apply it.
Fertilizer services →
Crop Protection
Conventional and organic pesticides, backed by field checking and insect trap monitoring.
Protection services →
Agronomy
Licensed PCAs, soil and tissue testing, crop plans, and the paperwork handled for you.
Consulting services →
Crops we know
From orchards to open fields
Decades of hands-on orchard and rice production experience across the valley, plus programs for stone fruit, grains, and row crops.
Orchard
Walnuts
Fertility programs, pest and disease monitoring, and spray rig calibration from bud break through harvest.
Orchard
Almonds
Tissue testing, nitrogen management plans, and growing degree day reports for key insect pests.
Orchard
Stone Fruit
Peaches, prunes, and plums: dormant and in-season spray programs, fertility, and tissue testing.
Field crop
Rice
Nutrient and weed control recommendations, water sampling, and regulatory record keeping.
Field crop
Grains
Wheat and other small grains: fertility recommendations, weed control, and soil sampling.
Field crop
Row Crops
Processing tomatoes, pumpkins, and more: pre-plant fertility, fertigation equipment, and pest monitoring.
Services
In the field with you
Application & Delivery Equipment
Spreaders, hoppers, tanks, and pumps to get product on the ground.
Field Checking
Regular scouting by licensed PCAs, plus insect trap monitoring.
Water & Soil Sampling
Sampling and analysis reports to guide your program.
Plant Tissue Tests
In-season tissue testing to fine-tune fertility.
Regulatory Record Keeping
NOI and product use report filing, and nitrogen management plans.
Spray Rig Calibration
Accurate rates, less waste, and better coverage.
Fertility Recommendations
Written recommendations based on your soil, tissue, and crop.
See all services
Rentals, weather stations, crop planning, safety training, and more.
Field Reports
Latest from the field
No field reports yet. Check back soon.
Grower tools
Your account, your records
Log in to your accounts, apply for credit, or sign up for our email reports.
BlightCaster
Walnut Blight Risk Index. A 7-day risk forecast by ZIP code.
Coming soon
About Bear River Supply
Local service, co-op buying power
Bear River Supply is a wholly owned subsidiary of the Butte County Rice Growers Association (BUCRA), alongside sister company Big Valley Ag Services. That structure lets us buy fertilizers and chemicals at volume discounts and pass the savings on to growers throughout the region.
Together with affiliate Aligned Ag Distributors (AAD), we draw on shared resources and a strong regional network, without losing the local, hands-on service our customers count on.