There are a few other errors too. Pounds/acre to kg/ha should be 1.12 to stated number of figures (1.120850) - close, but no cigar Short tons/acre to kg.ha is off by 1000X (2241.7 kg/ha or 2.2417 t/ha)
________________________________ From: James R. Frysinger <[email protected]> To: U.S. Metric Association <[email protected]> Sent: Thu, October 21, 2010 3:27:27 PM Subject: [USMA:48693] USDA non-SI to SI conversion chart I was researching planting calendars when I stumbled across this: http://www.usda.gov/news/pubs/fbook98/append.htm#chart Obviously there is a lot of rounding off. And I found that there is at least one error: To convert this To this Multiply by feet centimeters(cm) 39 A factor of 30 would have been closer; 30.5 would have been better yet. The actual factor is 30.48 (exactly). This seems to come from USDA fbook 98, whatever that is. Jim -- James R. Frysinger 632 Stony Point Mountain Road Doyle, TN 38559-3030 (C) 931.212.0267 (H) 931.657.3107 (F) 931.657.3108
