TABLE 5.-EFFECTS OF COVER CROPS AND SULFATE OF AMMONIA ON SIZE AND KERNEL PERCENTAGE OF PECAN NUTS.


 Variety and
 Plot No.*



Frotscher**
 1-A***.....


 Bess-
 B*** ......................

 2-A ..................... ..
 B .................... .......

 3-A .........................
 B ........................

 4-A .............. ..
 B ............ ..... .......

Stuart**
 -A***......
 B*** ............. ......

 2-A .................._ ...
 B ..........................

 3-A ................._
 B .........-.................

 4-A .......... ........
 B ......... ..... ....


 1928-1931 t
Nut diameters, 16th of an inch.
 Percent of nuts in each
 size class.

 16 and 13 and
 larger 15 14 smaller


 0 70.0 26.7 3.3
 0 70.0 26.7 3.3

 0 75.0 21.7 3.3
 0 75.0 21.7 3.3

 0 31.7 61.7 6.6
 0 31.7 61.7 6.6

 0 28.3 71.7 0
 0 28.3 71.7 0

 0 22.5 72.5 5.0
 0 22.5 72.5 5.0

 0 32.5 67.5 0
 0 32.5 67.5 0

 0 12.6 87.5 0
 0 12.5 87.5 0

 0 22.6 77.5 0
 0 22.6 77.5 0


Percent
kernel
 in
 total
 sample


 46.8
 46.8

 47.5
 47.5

 47.9
 47.9

 47.3
 47.3

 49.8
 49.8

 48.7
 48.7

 50.1
 50.1

 46.7
 46.7


 1932-1934
Nut diameters, 16th of an inch.
 Percent of nuts in each Percent
 size class, kernel
 in
 16 and 13 and total
 larger 15 [ 14 smaller sample


 3.0 31.6 46.1 19.3 50.4
 1.6 29.4 56.0 13.0 49.8

 2.9 36.1 45.4 15.6 50.5
 3.9 29.9 51.5 14.7 50.5

 5.0 42.5 43.6 8.9 50.1
 12.7 50.2 31.7 5.4 50.9

 10.0 46.9 32.6 10.5 50.7
 7.4 39.1 42.4 11.1 50.3


1.8
0

 0
8.4

 0
 0

 0
 0


33.9
19.6

25.1
29.2

34.7
25.1

15.9
29.1


46.6
62.7

54.8
44.2

43.2
46.7

51.5
46.4


17.7
17.7

20.1
18.2

22.1
28.2

32.6
24.5


45.6
47.1

43.6
48.8

49.1
46.8

47.9
49.4


 1928-1934
Nut diameters, 16th of an inch.
 Percent of nuts in each
 size class.

 16 and I 13 and
 larger 15 I 14 smaller


 1.5 50.8 36.4 11.3
 0.8 49.7 41.3 8.2

 1.4 55.5 33.5 9.6
 2.0 52.4 36.6 9.0

 2.5 37.2 52.5 7.8
 6.3 40.9 46.7 6.1

 4.0 35.8 56.0 4.2
 3.7 33.8 57.0 5.5


0.9
0

0
4.2

0
0

0
0


29.3
20.7

28.0
30.9

23.8
18.8

19.2
25.8


57.2
66.0

59.9
65.9

65.2
67.1

64.5
61.9


12.6
13.3

12.1
9.0

11.0
14.1

16.3
12.2


Percent
kernel
 in
 total
 sample


 48.6
 48.3

 48.9
 49.0

 49.0
 49.4

 48.6
 48.7

 47.3
 48.2

 45.6
 48.8

 49.6
 48.5

 47.3
 48.1


 See Table 2 for cover crops grown in each plot.
 ** Trees set 1904 on Norfolk fine sandy loam soil, experiment started in 1927.
*** Fertilizers: A, all plots ; superphosphate and sulfate of potash only.
 B, all plots; sulfate of ammonia, superphosphate and sulphate of potash.
 SThe sulfate of ammonia applications were started in 1930, therefore, the samples of nuts for A and B in each plot were not separated until 1932.