> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agrihub360.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> RB209 plans, nitrogen timing and the applications log.

Nutrient Planning starts from the field's soil sample, the crop and the target yield. It produces an RB209 plan: nitrogen, phosphate, potash, magnesium and lime, with the rate for each.

Nitrogen timing says when to apply. The applications log records what went on and when, as you do it. The log updates the plan and feeds the NVZ and Nmax checks in [Compliance & Records](/features/compliance-and-records).

<Frame caption="A spreader on the field, the plan's rate for each nutrient and the day to apply.">
  <img src="https://mintcdn.com/agrihub360/wfAnTqlaZU94FIHH/images/guides/nutrient-planning.svg?fit=max&auto=format&n=wfAnTqlaZU94FIHH&q=85&s=806e88426859e03d0425f24825a705d1" alt="A tractor spreads fertiliser on a field beside a card of nutrient rates and a calendar block." width="800" height="450" data-path="images/guides/nutrient-planning.svg" />
</Frame>

## What's Included

| Feature                                                                  | What it does                                                      |
| ------------------------------------------------------------------------ | ----------------------------------------------------------------- |
| [RB209 Nutrient Plans](/features/nutrient-planning/rb209-nutrient-plans) | N, P, K, Mg and lime from your soil sample, crop and target yield |
| [Nitrogen Timing](/features/nutrient-planning/nitrogen-timing)           | When to apply, from soil temperature and growth stage             |
| [Applications Log](/features/nutrient-planning/applications-log)         | Spray and fertiliser records in one place                         |
| [Zone-rate Planning](/features/nutrient-planning/zone-rate-planning)     | Dose by zone, with the product saving shown                       |