Design components arable cropping: growing a healthy crop - Methods to generate and evaluate rotations

4 important questions on Design components arable cropping: growing a healthy crop - Methods to generate and evaluate rotations

What are the rules to be considered for sound crop rotations?

- Effects of preceding crops on physical, chemical and biological soil fertility
- Effects of cropping frequency on soil fertility
- Effects of fallow management (including use of green manures) on soil fertility
- Accumulation of these effects over time

What are the advantages of MCR?

Easy to use
Transparancy and flexibility
Attention for economic as well as resource base issues

What are the disadvantages of MCR?

- Emperical nature of the rules and scors which make it hard to refine or generalize
- Absence of attention for biological soil fertility
- Only one rotation is evaluated
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What are the steps of ROTAT?

- Generate alternative rotations
- Evaluate these rotations
- Select appropriate rotations

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