Íslenskar landbúnaðarrannsóknir - 01.09.1971, Side 55

RANNSÓKNIR Á VALLARFOXGRASI 53
Uppskera 1968 og 1969 mid'ad' Skipting uppskerunn
viJ aj uppskeran 1967 sé 100 milli 1. og 2. slóttar
120 kg/ha
N
\ 55,2 hkg/ha hey Y///A

1 101,9 % X//////A

\ 81.5% V /7~A
120 kg/ha
N
| 57,3 hkq/ha hey YA

1 96,6% K771

| 107,3%
120 kg/ha
N
80+40
kg/ha N
80 + 40
kg/ha N
80+40
kg/ha N
| 87,8 hkq /ha hey R

1 68,4% n

86,3 % Ld
| 5 8,9 hkq /ha hey 1/77771

| 95,9% ^77777771

78,0% 1/7771
| 64,0 hkq/ha hey 77

1 89,7% 777

93,0% X/A
1 86,7 hkq hahey p|

1 66,2% 70

88,9% E7
ar
Slóttutimi:
1 96 7 1. s 1. 2% 2. sl. 2%
1 968 z /
1969 2Z 2/
1967 '/ '3/
1968 '/ 18/
1969 7 ,2/
1 967 2Z 2/
1 968 2Z Mo
1969 2Z 2/
1967 2% 2/
1968 Z 5/
1969 2Z 28/
1967 7 ’3/
1968 7 ’8/
1969 7 ’2/
1 967 2Z 2/
1968 3/ Wo
1969 2/ 25/
Mynd 3. Áhrif kals, veturinn 1967—1968, á uppskerumagn og skiptingu uppskerunnar ntilli fyrri
og síðari sláttar. Uppskerumagnið er miðað við árið 1967.
Fig. 3 The effect of winterkill of grasses in the winter of 1967—1968, on the yield and its
distribution between the Ist and 2nd cut.
To the left: The yield from 1967 is taken as 100.
In the center: The distribution of the yield between the lst and the 2nd cut.
To the right: Sláttutími = The time of cutting.