Table 2.

Summary of the main inputs and outputs of the spring and the autumn harvests.

Values in kg yr−1 ha−1	Adana	Aberystwyth	Moscow	Potash	Stuttgart	Wageningen
	Harvest Feb./Mar.
N	60	60	60	60	60	60
K2O	120	120	120	120	120	120
P2O5	30	30	30	30	30	30
Herbicides	0.93	0.93	0.93	0.93	0.93	0.93
Dry matter yield	12,600	9,745	9,734	16,065	15,316	10,320
	Harvest Sept./Oct.
N	140	n.a.	140	n.a.	140	n.a.
K2O	200	n.a.	200	n.a.	200	n.a.
P2O5	30	n.a.	30	n.a.	30	n.a.
Herbicides	0.93	n.a.	0.93	n.a.	0.93	n.a.
Dry matter yield	19,365	n.a.	15,568	n.a.	23,624	n.a.