Fjölrit RALA - 10.03.1980, Side 36

Reykhólar 1979
-28-
Tilraun nr. 392-75. Samanburður á vaxtarsvörun grastegunda við
mismunandi skammta af M, P og K.
Vallarfoxgras
kg/ha Uppskera þe. hkg/ha, 1979:
Áburður 50 kg N/ha 100 kg N/ha 150 kg N/ha
P K l.sl. 2 . sl. alls. l.sl. 2. sl. , alls. l.sl. 2. sl. alls .
l.sláttutími 24.7.
0 0 16.4 24.6 12.8
0 75 23.2 26.0 6.4
40 0 35.8 38.2 38.9
40 75 50.9 55.2 56.3
2. sláttutími 21.8.
0 0 40.9 48.1 20.0
0 75 20.9 45.4 28.6
40 0 65.2 67.1 47.0
40 75 75.4 78.3 77.1
Vallarsveifgras
1. sláttutími 24.7. og 4.9.
0 0 16.4 6.9 23.3 7.3 3.9 11.2 7.2 4.1 11.3
0 75 5.9 3.3 9.2 6.7 3.2 9.9 12.8 5.1 17.9
40 0 24.9 7.2 32.1 34.7 8.2. 42.9 32.0 10.4 42.4
40 75 30.3 8.4 38.7 40.8 10.0 50.8 43.4 11.0 54.4
2- sláttutími 21.8.
0 0 29.5 21.9 22.2
0 75 15.7 19.0 37.6
40 0 55.0 57.7 55.7
40 75 59.7 68.8 70.4
Snarrót
1. sláttutími 24.7. og 4.9.
0 0 18.2 5.7 23.9 25.9 3.9 29.8 18.6 6.0 24.6
0 75 25.9 5.2 31.1 12.5 3.0 15.5 21.1 7.6 28.7
40 0 35.7 5.4 41.1 45.4 8.8 54.2 46.7 11.6 58.3
40 75 39.2 9.8 49.0 46.9 7.3 54.2 46.5 9.7 56.2
2. sláttutími.21.8.
0 0 38.4 36.4 19.0
0 75 33.7 40.9 30.1
40 0 60.7 53.6 54.5
40 75 62.9 71.7 72.0