Table 2.

Timetable of activities and measurements for the experiment.

Activity	July			August				September
	Wk 2	Wk 3	Wk 4	Wk 1	Wk 2	Wk 3	Wk 4	Wk 1	Wk 2	Wk 3
Trial setup	✓
Watering with 2.2 l pot−1	✓
Introduction of 3 adult earthworms pot−1	✓
Watering with 5.2 l pot−1 in total	✓	✓
Addition of 1 g pot−1 of hay	✓	✓	✓
Planting of 4 lettuce plants pot−1		✓
Watering regime applied		✓	✓	✓	✓	✓	✓	✓	✓
Cutting of lettuce					✓				✓
Slug introduction & slug control treatment						✓	✓	✓
TDR measurements	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
Lettuce growth measurements		✓			✓
Slug herbivory assessment		✓	✓	✓	✓	✓	✓	✓	✓
Earthworm activity measurement		✓	✓	✓	✓	✓	✓	✓	✓	✓
Removal of slugs									✓
Removal of earthworms										✓

Wk = week of respective month in the year 2015. Check marks indicate the time of application or action of the respective activity.