Phosphorus Cost Per Acre for Soybeans 2026

Soybeans require 0.8–1.0 lb P2O5 per bushel of yield. At 60 bu/acre, maintenance P rates are 50–65 lb P2O5/acre, costing $35–$50 per acre using DAP or MAP at spring 2026 prices.

2026 Cost Breakdown

Soybean P maintenance rates at 60 bu/acre yield goal: 50–65 lb P2O5/acre. At $700/ton DAP, that is $38–$50/acre for maintenance. Build rates on low-testing soils run $60–$80/acre and are typically spread over 3–5 years.

P source	Rate	Cost/acre
DAP maintenance 60 bu/ac goal	50–65 lb P2O5	$38–$50
MAP maintenance 60 bu/ac goal	50–65 lb P2O5	$36–$48
Build rate low-testing soil	80–100 lb P2O5	$60–$80

How to Reduce Input Costs Per Acre

Soil-test every 3 years and skip maintenance applications where nutrient levels are already adequate.
Compare generic vs. branded on herbicides and fungicides — AI is identical at 20–35% lower cost.
Pre-buy in fall when logistics premiums are lowest; lock in anhydrous and potash before spring demand spikes.
Audit pass count — eliminating one unnecessary herbicide or fungicide pass saves $25–$50/acre.
Use GrainBrief price alerts to track weekly USDA AMS benchmarks and know when your quotes are above market.

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Phosphorus Cost Per Acre for Soybeans — 2026 Benchmarks

2026 Cost Breakdown

How to Reduce Input Costs Per Acre

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