What I found shocked me! The data show that soil temperatures reached 52 degrees F. on Feb. 24 in 2000, Feb. 25 in 2001, Mar. 14 in 2002 and Mar. 4 in 2003. My timing advice has been wrong ! To get good crabgrass control in Atlanta you should apply the pre-emergent on March 1, not March 15.Otherwise the seed will sprout beforehandâ¦.and most pre-emergent chemicals do not control crabgrass seedlings.hat I found shocked me! The data show that soil temperatures reached 52 degrees F. on Feb. 24 in 2000, Feb. 25 in 2001, Mar. 14 in 2002 and Mar. 4 in 2003. My timing advice has been wrong ! To get good crabgrass control in Atlanta you should apply the pre-emergent on March 1, not March 15.
  0.4 of an inch Answer   There are 2.54 centimeters in 1 inch, so 1 centimeter is 0.394 inches.
To calculate a inch value to the corresponding value in centimeter, just multiply the quantity in inch by 2.54 (the conversion factor). Supose you want to convert 1 inch into centimeters. In this case you will have: Value in centimeters = 1 * 2.54 = 2.54 (centimeter)(s) An inch is a unit of length or distance in a number of systems of measurement, including in the US Customary Units and British Imperial Units. One inch is defined as 1â12 of a foot and is therefore 1â36 of a yard.