Treatments	Sum of squares	Mean squares	df	F value	p Value
Mowing	0.20	0.10	2	29.65	<.001***
Fertilisation	0.04	0.02	2	6.26	.002**
Plot size	1.13	0.57	2	169.71	<.001***
Species	12.00	6.00	2	1799.23	<.001***
Season	0.60	0.30	2	89.42	<.001***
Mowing × Fertilisation	0.06	0.02	4	4.54	.001**
Mowing × Plot size	1.06	0.27	4	79.64	<.001***
Fertilisation × Plot size	0.05	0.01	4	3.53	.007**
Mowing × Species	4.19	1.05	4	313.98	<.001***
Fertilisation × Species	0.04	0.01	4	3.09	.015*
Plot size × Species	1.38	0.35	4	103.60	<.001***
Mowing × Season	0.15	0.04	4	10.96	<.001***
Fertilisation × Season	0.01	0.00	4	0.47	.76
Plot size × Season	0.02	0.00	4	1.23	.29
Species × Season	1.68	0.42	4	125.88	<.001
Mowing × Fertilisation × Plot size	0.04	0.01	8	1.54	.14
Mowing × Fertilisation × Species	0.04	0.01	8	1.59	.12
Mowing × Plot size × Species	1.34	0.17	8	50.12	<.001
Fertilisation × Plot size × Species	0.06	0.01	8	2.34	.02*
Mowing × Fertilisation × Season	0.04	0.00	8	1.38	.2
Mowing × Plot size × Season	0.04	0.00	8	1.32	.23
Fertilisation × Plot size × Season	0.01	0.00	8	0.41	.92
Mowing × Species × Season	0.26	0.03	8	9.83	<.001***
Fertilisation × Species × Season	0.02	0.00	8	0.76	.63
Plot size × Species × Season	0.01	0.00	8	0.47	.88
Mowing × Fertilisation × Plot size × Species	0.07	0.00	16	1.36	.15
Mowing × Fertilisation × Plot size × Season	0.03	0.00	16	0.51	.94
Mowing × Fertilisation × Species × Season	0.07	0.00	16	1.40	.13
Mowing × Plot size × Species × Season	0.07	0.00	16	1.23	.24
Fertilisation × Plot size × Species × Season	0.02	0.00	16	0.43	.97
Mowing × Fertilisation × Plot size × Species × Season	0.04	0.00	32	0.41	.99
Grass average height (co‐variate)	0.06	0.06	1	18.06	<.001***

Note: Significance codes: *p < .05, **p < .01, ***p < .001; p > .05 = ns.