Quality System Procedure 142.1: Pedigreed Seed Crop Inspection Procedures - Appendices

Appendix III: Count Area Calculation

The table below should be used to establish a count area for the detailed inspection. Inspectors must perform the area counts for the crops they inspect. The table shows the area that will contain approximately 10,000 plants when the number of plants per metre of row and the row spacing are known.

Approximate Area (in the nearest square metre) Required for 10,000 Plants as Determined by Plant Population and Row Spacing

Average No. of plants per metre of row	Distance between rows 15 cm (6")	Distance between rows 18 cm (7")
16.5	93	108
18	84	98
19.5	77	90
21.5	72	83
23	66	78
24.5	62	72
26	58	68
28	55	64
29.5	52	60
31	49	57
33	46	54
34.5	44	52
36	42	49
37.5	40	47
39.5	39	45
41	37	43
42.5	36	42
44	34	40
46	33	39
47.5	32	37
49	31	36
52.5	29	34
55.5	27	32
59	26	30
62.5	24	29
65.5	23	27
69	22	26
72	21	25
75.5	20	24
78.5	19	23
82	19	22
83.5	18	21
88.5	17	20
92	17	19
95	16	19
98.5	16	18
101.5	15	17
105	14	17
108	14	16
111.5	14	16
115	13	16
118	13	15

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