The 10‑Billion Harvest — Red‑Team Integrated Blueprint for Phosphorus‑Neutral Agriculture

We present a red‑team‑integrated blueprint to achieve global food security without new phosphate mining and near‑zero P runoff by 2050. The loop combines: (i) ambient struvite precipitation (with site‑dependent low‑temperature EFC as optional) recovering P from urine and agro‑streams; (ii) dust capture → brushite (supplemental) tuned by micro‑venturi fences and AI siting; (iii) native mycorrhiza networks (non‑GMO default; engineered strains only in controlled environments) to raise plant P‑uptake; (iv) topology‑optimized retention channels with overflow biosorbents to hold storm surges; and (v) a low‑energy PoS ledger with rigorous MRV. We detail methods, KPIs, falsifiers, a TEA scaffold, red‑team validation plan, and a 2026→2032 TRL roadmap from village rings to cereal belts. The plan emphasizes low‑tech‑first adoption, region‑specific models, and farmer‑centric incentives—reframing P as a recyclable municipal‑to‑farm resource while eliminating nutrient leakage to waters.