THICK SEEDING OF MILO IX THE SAN ANTONIO REGION. 



15 



wider spacings the total number of branches and tillers is about equal 

 to the total number of tillers alone in 1913 . In the close spacing there 

 was a decidedly smaller number of tillers and branches combined 

 than in 1913. This variation is unquestionably due to the rather 

 unusual weather conditions during the months of April and May, 

 1914. The weather conditions for the first six months of each year 

 and the averages, as given by the United States Weather Bureau for 

 a number of years, are shown in Table YTII. 



Table VIII. — Aspect of the sty, temperature, and rainfall at San Antonio, Tex., for 

 the first six months of the years 1913 and 1914, showing also averages for stated years. 





Aspect of sky. 



Temperature (° F.). 









Month. 



Days 

 clear. 



Days part- 

 ly cloudy. 



Days 

 cloudy. 



Mean maxi- 

 mum. 



Mean mini- 

 mum. 



Mean. 



Rainfall (inches). 





> 

 < 



CO' ■<r 



S 53 



> 

 < 



CO 



S 





> 

 < 





■* 



> 

 < 



CO 



i 



> 



OS 



05 



< 



CO 



a, 





> 



T— 1 





January... 

 February.. 



March 



April 



May 



June 



10.6 

 9.6 

 9.6 

 8.2 

 8.0 







9 

 11 

 18 

 16 

 20 



24 



1? 



9.5 

 8.3 

 10.5 

 11.6 

 11. .3 



9 

 11 



I 

 9 



4 

 8 

 6 

 5 

 16 



10.8 

 10.3 

 10.9 

 10.5 

 8.0 



13 

 6 

 4 

 5 



_2 



3 

 10 



8 

 12 

 11 



63.1 

 65.4 

 73.7 

 79.8 

 85.1 

 91.2 



62.1 

 62.1 

 70.8 

 ■79.1 

 87.1 

 88.3 



68.4 

 63.5 

 69.9 

 77.8 

 82.3 

 91.2 



42.6 

 44.4 

 52.1 

 58.8 

 65.3 

 70.8 



42.7 

 42.0 

 47.9 

 54.7 

 64.1 

 70.2 



44.4 

 42.8 

 47.8 

 55.8 

 66.4 

 72.8 



52.8 

 54.8 

 62.9 

 69.2 

 75.1 

 80.9 



52.4 

 52.0 

 59.4 

 66.9 

 75.6 

 79.2 



56.4 

 53.2 

 58.8 

 66.8 

 74.4 

 82.0 



1.32 

 1.71 

 1.75 

 2.69 

 3.04 

 2.62 



0.98 

 1.91 

 1.36 

 1.32 



2.88 

 2.90 



0.09 

 1.38 



.83 

 5.26 

 5.59 



.01 



Total 



13.13 



11.27 



13 16 





i 



































' Average for the years 1877 to 1913. 



2 Average for the years 1871 to 1913. 



While Table VIII shows no great variation in the temperature 

 during the growing months, there was an unusual difference in the 

 aspect of the sky for the months of April and May, the months when 

 most of the tillers and branches were being formed. For example, 

 there were three more clear days in April and sixteen more in May 

 in 1913 than in 1914. There were over twice as many cloudy days 

 in April and over five times as many in May in 1914 as in the same 

 months of the previous year. It is certain that light has a very 

 marked effect on the development of tillers, and the only reasonable 

 explanation to be offered in the variation in tiUcring during the two 

 years seems to be a corresponcHng variation in light, as the soil con- 

 ditions were very similar. There was a much greater rainfall in 1914 

 than in 1913 during the months of Apiil and May, as is shown, but 

 this, if it would influence the results in any way, would be likely to 

 make conditions more favorable for tillering. It would seem, on 

 the whole, that an intermediate between the two seasons is much 

 nearer the niean thnii cithci" of llie two seasons during which th(^ 

 experiments have been <-ou(lu(ic<l. It is reasonable to conclude that 

 in most seasons tillciing might be somewhat less than in 1913, but 

 niijcli grcalcr than in 1914, es|)('riHll\- in tlie closer spaced ])lantings. 

 liranciiing before the ])ljints inuliiic is .ibnoiMHid and rarely occuis 

 to any appreciable extent in grnin sorghums ut Sun Antonio. 



