No clear-cut explanation for the low estimated forage yields
in all programs is available at this time. Yields have remained at
6,000 to 7,000 pounds per acre dry weight per acre for 12 or
more seasons, compared with about 9,000 pounds per acre for
clover-grass pastures during Phase 1 (1953-1957).
 Crude protein content of oven-dry forage harvested at early-,
mid-, and late-season periods in alternate years is shown in Table
4. There was no significant difference among programs. As would
be expected, the early-season forage was markedly higher in pro-
tein than at later periods. Because of more favorable moisture
and temperature during the early months of 1970, clover growth
was excellent. This resulted in higher crude protein values at all
harvest periods that year.
 Mineral contents of forage harvested at three periods in al-
ternate years are shown in Table 5. The phosperous content ap-
pears adequate for normal animal and plant performance. The
potassium content was high for early-season forage because of
heavier concentrations of clover in the sward. Both calcium and
magnesium were in the optimum range each season. There was
no significant difference among programs for mineral content.

 Summary
 Three forage programs involving southern white clover-Pen-
sacola bahiagrass pastures were evaluated over a 7-year period.
Only phosphate and potash fertilizers were applied annually, and
minor elements were applied when needed as determined by soil
tests. The standard clover-grass pastures (Program 1) produced
more forage than similar pastures that were renovated (Pro-
gram 2) or irrigated (Program 3). Annual forage production
ranged from 6,100 to 7,100 pounds of oven-dry material per acre
for the three programs. Good quality forage was obtained in all
programs, as indicated by the cattle production data reported in
the Animal Science section of this report.