Table 1.

Plant growth conditions that varied among experiments

Experiment	Time under short day conditions	Time under long day conditions	Amount of both fertilizers used [g/100 l soil]
1.1. General EBF emission	4 weeks	4 days	all high (100)
1.2. EBF emission under aphid infestation with different fertilizer treatments	3 1/2 - 4 weeks	3 - 5 days	low (12.5)/high (75)
2. Cost of EBF emission	4 weeks	until the end of experiment	low (12.5)/high (75)
3.1. Choice experiment	2 weeks	2 1/2 - 3 weeks	all high (75)
3.2. Aphid performance	4 weeks	3 days	all high (100)
3.3. Wing induction	4 - 4 1/2 weeks	4 - 10 days	all low (25)