It is similar in heading date to Probrand 751 and Westbred 936. Milling and baking characteristics of Iona are good. Jake Origin of Jake is not known but Steiner Elevator in Rexburg, ID is distributing it. Yields of Jake have been comparable to Probrand 751 in most environments. Test weight is higher than Probrand 751 and comparable to Westbred 326.
Height is short and straw strength is good.
Date head is similar to Sunstar II and Idaho 377s. Jefferson Released by Idaho AES, USDA-ARS in 1998. Jefferson is primarily intended as a dryland variety due to it being taller than Probrand 751 and Westbred 936 and similar to Idaho 377s. Irrigated yields have been slightly below test average but have been higher when grown on dryland. Yields have been similar to Probrand 751 with slightly higher test weight.