Florida Agricultural Experiment Stations


TABLE 9.-ANALYSIS OF VARIANCE FOR YIELD AND QUALITY OF TOBACCO
 IN 1950.


 Source of Variation


 Total .........
 I Irrigation .........
 Blocks ........................
 Error (a) ... ..........................

 II "Cultivation"t (lupine-fallow) ....
 "Cultivation" x irrigation .......
 Error (b) .. .............................

III "Variety"$ (corn-peanuts) ...........
 "Variety" x irrigation ..................
 Error (c) .............................

IV "Variety" x "cultivation" ..........
 "Variety" x "Cultivation" x
 irrigation ........-...... .-....... .......
 Error (d) .......................... ..

 V Fertilizers ................ ....... ........
 Fertilizers x "variety" ..................
 Fertilizers x irrigation ..............
 Fertilizers x "cultivation" ........
 Fertilizers x "variety" x
 "cultivation" ............. ............
 r'ertilizers x "variety" x irrigation
 Fertilizers x "cultivation" x
 irrigation ....................... ......
 Fertilizers x "variety" x
 "cultivation" x irrigation .......
 Error (e) .............-.. .........


Degrees
 of Mean Square
Freedom Yield IQuality

 143
 2 5.01 15.61
 2 4.42 5.47
 4 7.64 3.12

 1 .01 1.41


 .22
 1.17

49.58**
3.70
 .06

 .34

 .29
 1.23

 2.86*
 .40
 .32
 .60

 .07
 .53

 .78

 .66
 .34


3.27
 .81

10.47**
4.37**
 .28

 2.03

 .25
 .39

 1.28**
 .62*
 1.23**
 1.40**

 1.66**
 1.16**

 .88**

 1.20**
 .22


 Significant at .05 percent level.
 ** Significant at .01 percent level.
 t "Cultivation" refers to lupine or fallow for cover crops.
 t "Variety" refers to corn or peanuts in the rotation following the cover crops.


TABLE 10.-YIELDS OF TOBACCO IN POUNDS PER 12 PLOTS* FOR RATES OF
IRRIGATION WITH RATES AND TIME OF APPLICATION OF FERTILIZER IN 1950.
 SI Mean
 Fertilizer Irrigation Irrigation Irrigation Total Yield
 Rates None %2 Inch % Inch Yield Per Plott

800 ............ 44.13 46.48 45.47 136.08 3.78
1600 .............. 46.06 57.71 56.37 160.14 4.45
400 + 400**.... 44.30 48.69 52.83 145.82 4.05
800 + 800**... 45.95 50.78 55.21 151.94 4.22

Totals ....... 180.44 203.66 209.88

Meant ............ 3.76 4.24 4.37
 To convert to yield per acre multiply each entry by 25.50.
 ** One-half of fertilizer applied one week prior to transplanting, the other half approxi-
 mately four weeks after transplanting.
 t LSIY at .05 probability for irrigation means + .32.
 $ LSD at .05 probability for fertilizer means + .22.