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25 <br /> <br />24 <br />u <br />~~ <br />Z <br />w~ <br />U <br />w 9 <br />O <br />U ~ <br />~~ 3 <br />0 <br />Figure 6. Grass cover in Allen Mine Main Plot, 1979 (Treatments: 1 Absolute <br />Control, 2 = Phosphorus Control, 3 = 66 kg N/ha, 4 = 132 kg N/ha, <br />5 66 kg N/ha + excelsior, 6 = 132 kg N/ha + excelsior, 1 = <br />66 kg N/ha + straw, 8 = 132 kg N/ha + straw). <br />L <br />1 2 3 4 5 6 7 8 <br />TREATMENTS <br />