THE INTERNATIONAL SAWFLY YIELD NURSERY
 
 The 14 entries in the 1980 International Sawfly
 Yield Performance Nursery are listed below:
 
 Entry	Cross			C.I. No. or	Year
 	No.			or Variety	Sel. No.	Entered	Source
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 1	Fortuna			13596		1963		USDA-ND
 2	Chris			13751		1971		USDA-MN
 3	Tioga			17286		1969		USDA-ND
 4	Waldron			13958		1975		USDA-ND
 5	Lew			17429		1972		USDA-MT
 6	Thatcher		10003		1976		USDA-MN
 7	wRN//S6579/ND487	SU28's'-1	1976		ND
 8	WRN//S6579/Jt		ND580		1980		ND
 9	Tzpp/Son64//Fta		MT7810**	1979		USDA-MT
 10	B52-91//KF/Cnt/3/Fta	MT7620		1979		USDA-MT
 11	ND6850/Fta		MT783		1979		USDA-MT
 12	Tzpp/Son64//Fta		MT7819**	1980		USDA-MT
 13	ND6850/Fta		MT781		1980		USDA-MT
 14	ND681/MT6830		MT7926		1980		USDA-MT
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 **Semidwarf
 
 
 Trial Description and Summary
 
 The International Sawfly Nursery was planted at 5 locations in North Dakota and Montana 
 but harvested at 4. Data are given in Tables 5-1 to 5-4. Entries at Bozeman had the 
 highest average yield of 87.9 bu/A, while entries at Williston had the lowest with 17.0 
 bu/A.
 
 Average yields and bushel weights in 1980, 1979-80, and 1978-80 for entries in this 
 nursery are given in Table 6. MT7819 ranked first in yield with 44.9 bu/A while Chris had 
 the lowest average with 34.2 bu/A. SU28's'-1 had the highest three year average yield of 
 40.0 bu/A.
 
 Miscellaneous agronomic and disease data are summarized in Table 7-1 and 7-2. No stem 
 cutting data was obtained on entries at Lethbridge, Canada in 1980.