| Nitrogen x potassium study
| Diesburg, K. L.; Christians, N. E. 1987. 1987 Iowa Turfgrass Research Report. June. p. 28-29.
| More Keywords | 68998 |
| Evaluation of different granular nitrogen sources for fertilization of Kentucky bluegrass turf
| Agnew, M. L.; Christians, N. E.; Moore, R. W. 1987. 1987 Iowa Turfgrass Research Report. June. p. 30.
| More Keywords | 68999 |
| Summer slow-release nitrogen sources comparison study
| Agnew, M. L.; Christians, N. E.; Moore, R. W. 1987. 1987 Iowa Turfgrass Research Report. June. p. 31-33.
| More Keywords | 69000 |
| Evaluation of liquid fertilizer programs on three Kentucky bluegrass cultivars
| Moore, R. W.; Agnew, M. L.; Christians, N. E. 1987. 1987 Iowa Turfgrass Research Report. June. p. 34-41.
| More Keywords | 69003 |
| Nitrogen X potassium study
| Diesburg, K. L.; Christians, N. E. 1986. 1986 Iowa Turfgrass Research Report. p. 26-28.
| More Keywords | 69772 |
| Evaluation of different granular nitrogen sources for fertilization of Kentucky bluegrass turf
| Agnew, M. L.; Moore, R. W.; Christians, N. E. 1986. 1986 Iowa Turfgrass Research Report. p. 29-30.
| More Keywords | 69773 |
| Summer slow-release nitrogen sources comparison study
| Anonymous. 1986. 1986 Iowa Turfgrass Research Report. p. 31-32.
| More Keywords | 69774 |
| Evaluation of liquid fertilization programs on three Kentucky bluegrass cultivars
| Moore, R. W.; Agnew, M. L.; Christians, N. E. 1986. 1986 Iowa Turfgrass Research Report. p. 33-35.
| More Keywords | 69775 |
| Evaluation of different N sources, rates, and timings for fertilization of Kentucky bluegrass turf
| Hummel, Norman. 1984. 1984 Iowa Turfgrass Research Report. p. 28-30.
| More Keywords | 65637 |
| Plastic-coated urea as a slow-release fertilizer for Kentucky bluegrass
| Hummel, Norman. 1984. 1984 Iowa Turfgrass Research Report. p. 31-33.
| More Keywords | 65638 |
| Eagle-Iron studies
| Christians, Nick. 1984. 1984 Iowa Turfgrass Research Report. p. 34-37.
| More Keywords | 65639 |
| Nitrogen x potassium study
| Diesburg, K. L.; Christians, N. E.; Laroque, D. 1984. 1984 Iowa Turfgrass Research Report. p. 38-39.
| More Keywords | 65640 |
| Phosphorus fertilization study
| Diesburg, K. L.; Laroque, D.; Christians, N. E. 1984. 1984 Iowa Turfgrass Research Report. p. 40-41.
| More Keywords | 65641 |
| The reduction of ammonia volatilization from turfgrass areas treated with surface-applied urea
| Joo, Young; Christians, Nick. 1984. 1984 Iowa Turfgrass Research Report. p. 42-45.
| More Keywords | 65642 |