Table 2. Slow release fertilizer treatment application rates and percent time (from June-September) that plants did not meet the minimum phosphorus requirements of a 1,200 lb lactating cow with respect to fertilizer treatments on the extremely grazed and moderately grazed exclosures, Central Grasslands Research Extension Center, Streeter. |
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Fertilizer Type |
Date Applied |
Rate Applied |
Extremely Grazed |
Moderately Grazed |
|
|
|
Percent time P deficient |
|
Control |
None |
None |
42% |
37% |
Phosphorus |
37741 |
24 lb/ac |
11% |
12% |
Phosphorus |
37741 |
48 lb/ac |
7% |
2% |
Phosphorus |
37791 |
24 lb/ac |
16% |
11% |
Phosphorus |
37791 |
48 lb/ac |
13% |
9% |
Urea |
37791 |
33 lb/ac |
31% |
44% |
Urea |
37791 |
66 lb/ac |
42% |
49% |