Table 1.

Suggested sample size for elm leaf beetle egg sampling on English elm in different size stands. Eight segments per tree sampled: north, east, south and west; inner and outer crown.

TOTAL TREES	SAMPLE TREES	SAMPLES/TREE	SAMPLES/SEGMENT	TOTAL SAMPLES	%TREES
3	3	40	5	120	100%
4	4	32	4	128	100%
5	5	32	4	160	100%
6	6	24	3	144	100%
7	6	24	3	144	86%
8	7	24	3	168	88%
9	8	16	2	128	89%
10	8	16	2	128	80%
11	8	16	2	128	73%
12	8	16	2	128	67%
13	8	16	2	128	62%
14	8	16	2	128	57%
15	8	16	2	128	53%
16	9	16	2	144	56%
17	9	16	2	144	53%
18	9	16	2	144	50%
19	9	16	2	144	47%
20	9	16	2	144	45%
21	9	16	2	144	43%
22	10	16	2	160	45%
23	10	16	2	160	43%
24	10	16	2	160	42%
25	10	16	2	160	40%
26	10	16	2	160	38%
27	10	16	2	160	37%
28	10	16	2	160	36%
29	10	16	2	160	34%
30	10	16	2	160	33%
40	12	16	2	192	30%
50	15	16	2	240	30%
60	15	16	2	240	25%

Criteria:
1. Minimum of 128 total branches
2. Minimum 25% of trees sampled.