Nutrient Management Guide (RB209)

RB209 amended January 2018

The Nutrient Management Guide (RB209) was updated in January 2018. Digital copies available on this webpage have been revised. The app, available for Apple and Android devices, has also been updated. If you have a printed copy of RB209 there is no need to order an updated version as the amendments document lists the changes that you should take into account. Download the list of amendments

The Nutrient Management Guide (RB209) provides guidelines for crop nutrient requirements and the nutrient content of organic materials. It is published as seven sections:

Section 1 Principles of nutrient management and fertiliser use
Section 2 Organic materials
Section 3 Grass and forage crops
Section 4 Arable crops
Section 5 Potatoes
Section 6 Vegetables and bulbs
Section 7 Fruit, vines and hops

Why use the Nutrient Management Guide (RB209)?

Profitable farming requires continued development and use of a wide range of skills. Good nutrient management is an important aspect of this and can contribute to business efficiency and reduce environmental impacts.

The Nutrient Management Guide (RB209) helps you make the most of organic materials and balance the benefits of fertiliser use against the costs ? both economic and environmental. It explains the value of nutrients, soil and why good nutrient management is about more than just the fertilisers you buy; it can save you money as well as help protect the environment.

RB209: Nutrient Management App

RB209: Nutrient Management is a FREE app, which allows you to navigate all seven sections of the Nutrient Management Guide (RB209). It is available in the App Store for Apple devices and on google play for android devices.

PDF Downloads

The Nutrient Management Guide (RB209) will be updated regularly and AHDB can send you updates when they are published. Please complete this form if you would like to be kept up to date.

For details on how we use and look after your personal information please read our Privacy Notice at

Excess winter rainfall maps

If you?re following the Field Assessment Method in RB209 to assess soil nitrogen supply (SNS) and need to determine the Excess Winter Rainfall (EWR) for your area, visit our EWR maps page.

View Maps

Excess winter rainfall (EWR) is the amount of rainfall that drains through the soil, leaching nitrates present in the soil after harvest of last year?s crop. Compared to total rainfall, excess winter rainfall is a better indicator of nitrate losses during winter. This could help in a better assessment of SNS when planning for nitrogen applications during spring.


Webinar:An Overview of the Nutrient Management Guide

Webinar: How to use the Nutrient Management Guide

Further information

Beef & Lamb nutrition and forage
Cereals & Oilseeds nutrient management and cover crops
Dairy grassland management
Horticulture green manures and soils
Pork nutrient management
Potatoes nutrient management