254 



Journal of Agricultural Research 



Vol. XII No.s 



Navel orange (ANTEiyOPE Heights) . — The navel-orange grove later 

 referred to as the Antelope Heights navels is a plantation of 480 ten-year- 

 old trees planted 22 by 22 feet, located at Naranjo, Cal. The individual 

 tree records of this planting are shown in figure 2 and are the yields 

 obtained in 1916. The general appearance of the trees gives a visual 

 impression of uniformity greater than a comparison of the individual 

 tree production substantiates; however, the distribution of the yields 

 approximates closely the normal curve of errors, having a skewness of 

 only o.ooi ±0.037, ^s shown by figure 11. 



Fig. 2. — Diagram showing the individual tree yield (in pounds) of the navel-orange 



grove (Antelope Heights). 



North 



Yield per tree {pounds) 



Row. 



Total 

 yield 

 per 

 row. 



4 



5 



6 



7 



8 



9 



10 



II 



12 



13 



14 



IS 



16 



17 



18 



19 



20 



ai 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



32 



33 



Total yield 

 per row . . 



130 

 120 

 200 

 ISS 



250 

 300 

 22s 



ISO 

 300 

 250 

 200 

 ISO 

 no 

 190 

 200 

 210 

 140 

 los 

 120 

 130 

 ISO 

 I9S 

 100 

 100 

 los 

 100 

 100 

 13 S 

 24s 

 200 



22s 

 200 

 250 



200 

 ISO 

 ISO 

 20s 

 225 

 200 

 2 SO 

 325 



ISO 



i8s 

 100 

 200 

 150 

 200 

 ISO 

 ISO 

 100 

 100 

 ISO 

 120 

 100 

 105 

 no 

 ISO 

 100 

 100 

 ISO 

 i8s 

 255 

 170 

 225 

 200 

 150 



250 

 230 

 300 

 295 

 300 

 240 

 225 

 22s 

 290 

 17s 

 170 

 230 

 135 

 i6s 

 130 

 100 

 IIS 

 200 

 ISO 

 120 

 200 

 ISO 

 15s 

 200 

 ISO 

 270 

 230 

 280 

 250 

 SO 

 250 

 200 

 ISO 



130 

 270 

 235 

 26s 

 200 

 200 

 200 

 210 

 200 

 I3S 

 175 

 ISO 

 160 

 135 

 100 

 no 

 135 

 ISO 

 100 

 150 

 175 

 185 

 265 

 150 

 1 75 

 100 

 ISO 

 250 

 300 

 3 SO 

 IIS 

 21S 

 170 



300 

 275 

 280 

 320 

 290 

 210 

 275 

 225 

 100 

 170 

 200 

 200 

 180 

 150 

 18s 

 ISO 

 160 

 200 

 200 

 200 

 275 

 200 

 ISO 

 175 

 200 

 150 

 ISO 

 115 

 260 

 240 

 235 

 240 

 155 



260 

 300 

 200 

 250 

 250 

 250 

 250 

 200 

 225 

 200 

 200 

 250 

 250 

 200 

 220 

 150 

 250 

 200 

 200 

 ISO 

 160 

 190 

 200 

 175 

 175 

 175 

 150 

 180 

 i8s 

 240 

 225 

 200 

 220 



28s 

 340 

 170 

 130 

 185 

 220 

 200 

 250 

 225 

 225 

 210 



215 



220 

 190 

 150 

 225 

 200 

 185 

 22s 

 225 

 200 

 i5o 

 140 



125 

 ISO 



250 

 270 

 175 

 150 

 200 

 200 

 200 

 250 



2SS 



195 



250 

 200 

 ISS 



150 



ISO 

 150 

 22s 

 200 

 300 

 200 

 200 

 200 

 ISO 



150 



150 



I2S 



200 



ISO 



100 

 ISO 

 ISO 

 100 

 175 

 175 

 200 

 200 

 250 

 210 

 270 

 250 

 250 



225 

 250 

 ISO 

 210 

 i6s 

 I3S 

 170 

 205 

 250 

 I6S 

 190 

 160 

 225 

 300 

 200 



I2S 

 225 

 150 

 125 

 200 

 200 

 22s 



ISO 

 240 

 ISO 

 150 

 200 

 i8s 

 200 

 250 

 200 

 250 

 250 



ii3SO 

 >45S 

 .285 

 ,285 

 .475 

 , 240 

 .250 

 >370 

 , 190 

 .84s 

 >82S 

 .775 

 .835 

 ,870 

 .64s 

 .345 

 .320 

 , 200 

 ,28s 

 .145 

 I 210 



.215 



.075 

 .125 

 ,280 

 ,420 

 .730 

 .635 

 .005 

 . 170 

 ,110 

 .025 



.125 



5. 460 



5,385 



6, 580 6,010 6,815 



6, 930 6, 745 



6, 23s 6, 27s 6,475 5. 70016, 175 6, 260 



Valencia orange. — The Valencia orange grove is composed of 240 

 15-year-old trees, planted 21 feet 6 inches by 22 feet 6 inches, located at 

 Villa Park, Cal. Figure 3 represents this planting and the individual 

 tree yields which were obtained in 1916. 



Eureka lemon, — The lemon yields were obtained from a grove of 

 364 23-year-old trees, located at Upland, Cal. Figure 4 represents the 

 individual tree yields of this planting. The records extend from October 

 I, 1915, to October i, 1916. The grove consists of 14 rows of 23-year-old 

 trees, extending north and south, with 26 trees in a row, planted 24 by 



