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.