farm just west of Lafayette, Indiana. Defoliation treatments were applied at R4 and R5 growth stages with defoliation levels of 25, 50, 75 and 100 percent. The losses at the R4 stage were higher than our current charts suggest (Table 13). The losses at the R-5 stage of development were the same as what our current charts would suggest. SOYBEANSIowa Research conducted at Boone, Iowa, is evaluating the effects of 25, 50, 75, and 100 percent defoliation at the R4 and R5 soybean growth stages. This is follow-up to research conducted at earlier R-stages that suggests that defoliation causes greater losses than previously thought. Table 14 shows the 2016 results for Iowa. SOYBEANSIndiana This trial was initiated in 2016 to study the impact of simulated hail defoliation on the yield and percent loss of soybeans at the R-4 and R-5 stages of development. This is a follow-up to the studies that showed great losses from defoliation at R-1 and R-3. A maturity group MG 3.8 soybean variety was grown at the Purdue research Table 13 SOYBEANS Indiana Defoliation% Growth Stage 25 R4 R4 Chart R5 R5 Chart 7 6 6 9 50 75 100 40 26 34 36 88 56 81 75 Loss% 18 12 18 17 Researcher Darrin Dodds and a graduate student evaluating cotton plots in Mississippi. 16 AUGUST2017 AUGUST2017