A method to estimate plant density and plant spacing heterogeneity: application to wheat crops

Table 2 Parameters of the fitted distributions

Sites	Sowing density (seeds m⁻²)	Cultivar	Gamma			Weibull
Sites	Sowing density (seeds m⁻²)	Cultivar	a	b	p value of Chi square test	a	b	p value of Chi square test
Avignon	100	Apache	1.14	6.38	0.27	7.44	1.07	0.29
	200	Apache	1.25	4.04	0.62	5.29	1.13	0.05
	300	Apache	0.99	2.53	0.38	2.51	1.00	0.56
	400	Apache	0.96	1.50	0.22	1.39	0.94	0.57
Toulouse	100	Apache	1.07	5.01	0.12	5.32	0.99	0.10
	200	Apache	1.39	1.95	0.17	2.86	1.15	0.12
	300	Apache	1.21	2.28	0.94	2.89	1.12	0.94
	400	Apache	1.24	1.37	0.51	1.76	1.10	0.40
	600	Apache	1.16	0.96	0.37	1.14	1.09	0.21
Grignon	150	Premio	1.12	3.37	0.70	3.85	1.06	0.68
	150	Attlass	1.13	2.48	0.69	2.87	1.05	0.67
	150	Flamenko	1.11	3.3	0.92	3.75	1.05	0.92
	150	Midas	1.24	3.03	0.21	3.92	1.12	0.24
	150	Koréli	1.15	2.89	0.24	3.48	1.15	0.18

ISSN: 1746-4811