RB209 Section 4 Arable crops
In this section you will find information on how to determine the nutrient requirements of cereals, oilseeds, peas and beans, sugar beet and biomass crops.
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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
All seven sections of the Nutrient Management Guide (RB209) can now be downloaded as an app.
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Available in print
Note: The print edition of Section 4 contains an error. Phosphate and potash recommendations (Tables 4.12 and 4.13) are in kg/ha, not t/ha.
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Excess winter rainfall (EWR) tool
EWR has an important influence on the amount of nitrate leached and, thus, the nitrogen availability to a crop.
New phosphorus guidance for 2020
The story behind the latest changes to RB209 and how the revised guidance will deliver benefits to your business.
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Featured article
The science behind nitrogen inhibitors
There’s a debate going on about the mandatory use of nitrogen inhibitors for urea fertilisers. Last year, AHDB reviewed the literature to reveal the science behind them and how they could be used to reduce emissions.
Crop Production Magazine investigates.
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Other relevant guides
Find out what's changed in RB209
The AHDB Nutrient Management Guide (RB209) offers best practice guidance on the application of fertilisers and organic materials to crops and grassland.
In this section you will find information on the nutrient content of organic materials such as manures, compost and digestate.
In this section you will find information on how to determine the nutrient requirements of grass and forage crops.
In this section you will find information on how to determine the nutrient requirements of potatoes.
In this section you will find information on how to determine the nutrient requirements of vegetables and bulbs.
RB209 provides essential nutrient management guidance. These guidelines provide more detail on N, the most important nutrient on the most extensive UK crop, wheat.
Take-all is a serious soil-borne disease of cereals. It is estimated that half of UK wheat crops are affected and that they suffer average yield losses of 5 to 20%. This publication provides an overview of the disease and management options.
These guidelines describe how lodging resistance (or standing power) in winter wheat is altered by the environment and crop management.
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Access disease management guidance for oilseed rape from this page
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