Phosphate — Phosphorus Fertilizer Reference#

Quick-reference skill for phosphorus nutrition, fertilizer products, and management.

When to Use#

• Planning phosphorus fertilization for crops
• Interpreting soil test phosphorus levels
• Selecting phosphate fertilizer products and forms
• Managing environmental phosphorus runoff risks
• Understanding phosphorus cycling in soil

Commands#

intro#

bash

scripts/script.sh intro

Overview of phosphorus in agriculture — role, cycling, global reserves.

products#

bash

scripts/script.sh products

Phosphate fertilizer products — MAP, DAP, TSP, rock phosphate, SSP.

soiltest#

bash

scripts/script.sh soiltest

Soil phosphorus testing — Bray, Olsen, Mehlich, interpretation tables.

placement#

bash

scripts/script.sh placement

Application methods — broadcast, band, starter, foliar, timing.

crops#

bash

scripts/script.sh crops

Crop phosphorus requirements and removal rates.

cycling#

bash

scripts/script.sh cycling

Phosphorus cycling — fixation, mineralization, pH effects, mycorrhizae.

environmental#

bash

scripts/script.sh environmental

Environmental management — runoff, P index, eutrophication, 4R stewardship.

checklist#

bash

scripts/script.sh checklist

Phosphorus management planning checklist.

help#

bash

scripts/script.sh help

version#

bash

scripts/script.sh version

Configuration#

VariableDescriptionPHOSPHATE_DIRData directory (default: ~/.phosphate/)

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