Yield Bonus for Soil Cultivation

This script adds a realistic yield bonus for proper soil cultivation – exactly where the soil has been worked.

How it works:

• Seedbed preparation applies a yield bonus to the soil on a per-cell basis wherever the implement works. There is no minimum coverage requirement: work a strip and harvest it to receive the bonus – every part of the field counts.
• The bonus depends on the implement used: disc harrow +4%, cultivator +6% (or +4% for shallow tillage), power harrow +8%. The last implement driven over a spot determines its bonus.
• The bonus increases the harvest yield as well as the grass volume when mowing and is consumed in the process – rewarding fresh soil cultivation before each crop or mowing cycle.

Visualisation:

• A dedicated "Yield Bonus" overlay on the in-game map shows exactly where the soil has been worked, shaded from pale (weaker bonus) to strong green (stronger bonus).
• The current implement and its bonus are displayed in the standard field info panel.

Multiplayer is supported.