Crop Root Zone — Archive

← OrreryCrop Root Zone is an Orrery publication

Fertilizer, crops, and the economics between them.

Archive

Issue 11 · 2026-09-28

Polymer-Coated Urea Needs Six Bushels to Pay This Fall. The Trials Find Them on Claypan and Sand, and Roughly One Year in Four Anywhere Else.

Issue 10 · 2026-09-21

UAN32 and Urea Cost $0.714 and $0.715 a Pound of Nitrogen. UAN32 Has Not Left a $10 Band in Nine Surveys, While World Urea Rose 12% in a Month.

Issue 09 · 2026-09-14

Anhydrous's Discount to Urea Shrank by About a Third in a Year. Record Diesel Took Less Than a Dollar an Acre of It.

Issue 08 · 2026-09-07

The Biggest US Phosphate Producer Is Cutting 206 Jobs Over a Sulfur Contract

Issue 07 · 2026-08-31

UAN28 Fell 7% and Is Still the Most Expensive Nitrogen on the Board

Issue 06 · 2026-08-24

India Asked for 1.7 Million Tons and Got Three Times That on One Coast. The Offers Expire Today.

Issue 05 · 2026-08-17

The Same Institution Forecast 2026 Urea at −7%, Then +60%, Five Months Apart

Issue 04 · 2026-08-10

Your Anhydrous Fell 7% in a Month. The Producer Just Raised Its Long-Run Price by 8.5%.

Issue 03 · 2026-08-03

Ammonium Sulfate's Cost Stack Rose $62 a Ton. Its Price Rose $20 to $50.

Issue 02 · 2026-07-27

The Import Floor: Why Falling Retail Nitrogen Won't Chase the 2024 Lows

Issue 01 · 2026-07-18

AMS Margins Get Squeezed as Gulf Sulfur Resets the Cost Stack