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 producerslow producers
tree sampleBST- LC50 (ppm)tree sampleBST- LC50 (ppm)
4-110.033 \pm 0.00102-3232 \pm 12
5-820.053 \pm 0.0151-1912 \pm 4.7
4-700.056 \pm 0.03544-4610 \pm 0.55
2-880.063 \pm 0.0205-148.4 \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