Table 1.

Weed population for three survey dates and sugar beet yield statistics.

Treatment	Survey date	x̅	σ2	Minimum	Maximum	0.2-Trimmed mean	NMAD †
		Weed population (weed m−2)
CA þ	12/02/2010	35.1	463	3	61	34.5	29.6
	01/05/2011	22.9	36	14	28	23.6	5.0
	02/22/2011	11.4	17	7	17	11.2	5.4
EA þþ	12/02/2010	47.6	540	18	77	47.8	20.0
	01/05/2011	33.4	69	19	44	34.6	4.0
	02/22/2011	10.9	5	8	15	10.6	2.2
Control	12/02/2010	48.9	1340	13	150	39.9	23.7
	01/05/2011	65.6	485	38	108	63.4	25.2
	02/22/2011	47.1	616	15	97	45.6	26.0
	Yield (t ha−1)
CA þ	07/15/2011	95.4	60.0	75.7	107	95.8	8.5
EA þþ	07/15/2011	96.5	13.8	91.3	106	96.0	2.6

^†Normalized median absolute deviation.

^þConventional application.

^þþExperimental application.