Table 1. Highest and Lowest Brine Shrimp Test LC50 Values of Extracts from 135 Individual Paw Paw Trees Growing at the WMREC Plantationa,b
high producers
low producers
tree sample
BST- LC50 (ppm)
tree sample
BST- LC50 (ppm)
4-11
0.033 \pm 0.0010
2-32
32 \pm 12
5-82
0.053 \pm 0.015
1-19
12 \pm 4.7
4-70
0.056 \pm 0.0354
4-46
10 \pm 0.55
2-88
0.063 \pm 0.020
5-14
8.4 \pm 2.5
a Grand mean LC 50 value of 1.2 ppm ± 0.30 ppm.b Twig samples were collected, September 26, 1995, from trees planted in the spring of 1984.
M cL aughlin, 2008