Ársrit Ræktunarfélags Norðurlands - 01.01.1963, Blaðsíða 144

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c. Alopecurus pratensis.
d. Phleum pratense.
e. Agrostis stolonifera.
The fertilizers treatment was in this way:
I. 30 kg P20-„ 35 kg K.O and 45 kg N pr. lia.
II. 60 - - 70 - - - 90 -
III. 90 - - 105 - - - 135 -
The plots were arranged according to the split plot sy-
stem. The soil was peat soil, poorly drained and therefore
wet in rainy periods.
The result from this experiment is shown in table I and
figures 1, 2 and 3.
In the s;cond experiment the grass species and mixtures
were:
Phl. pratense.
Phl. pratense and Trifolium pratense.
Phl. pratense and Festuca rubra.
F. rubra.
F. rubra and Trifolium repens.
Alopecurus pratensis.
The result from this experiment is shown in table II and
figure 4.
Conclusions.
1. Phl. pratense has in three years of the experiments gi-
ven the highest yield under the conditions tliat prevailed
in the experiment.
2. In the secound cutting the yield of Phl. pratense was
relatively poor.
3. F. rubra gave a poor yield on the first year, but a good
yield on the second year.
4. The strain used of A. stolonifera died out from the
plots on the second year.