Table 10. Forage production on crested wheatgrass plots fertilized every other year* with ammonium nitrate (33-0-0).
Year	Dry weight yield - lbs. per acre				Percentage increase over check
	Check	25# N	50# N	100# N	25# N	50# N	100# N
1957	1239	1714	2013	2001	38.3	62.5	61.5
1958	1003	1016	1114	1250	1.3	11.1	24.6
1959	1094	1230	1266	1659	12.4	15.7	51.6
3-yr. Average	1112	1320	1464	1637	18.7	31.7	47.2
*Fertilizer applied in spring 1957 and 1959.