ALFALFA SEED PRODUCTION. 



11 



Table II. — Pods and seeds produced by alfalfa flowers on the same -plants, free and pro- 

 tected from insects — Continued. 



B.— Inside Netting: Flowers not Tripped Either Artificially or by Insects. 



Year. 



Place. 



Number 

 of plants. 



Total 

 number 



of 

 flowers. 



Number 

 of pods. 



Total 



number 



of 



seeds. 



Flowers 

 bearing 

 pods. 



Average 

 number 

 of seeds 

 per pod. 



1908 



Pullman 



15 

 1 

 15 

 10 

 9 

 8 

 6 

 6 



651 



4,116 



37 



1,500 



1,186 



535 



832 



314 



169 



25 

 157 



29 

 230 



Per cent. 

 3.84 

 3.81 



1.16 





Chico 



1.46 





Arlington 





1909 



PuUman 



131 

 138 

 30 

 15 

 12 

 11 



357 

 282 



8.73 

 11.63 

 5.60 

 1.80 

 3.82 

 6.50 



2.72 





Chinook 



2.04 





Havre 







Chico 







1910 



Pullman 



22 

 11 



1.83 



1912 



New London 



1.00 







Total .... 



77 



9,340 



519 



931 







Average 





5.55 



1.78 

















C— Inside Netting: Flowers Artificially Tripped. 



1908 ... 



Pullman 



7 



15 



1 



15 



10 



9 



8 



6 



6 



576 



4,229 



22 



1,379 



830 



337 



1,250 



296 



155 



148 



1,086 



7 



599 



370 



104 



345 



75 



50 



205 



1,908 



9 



1,783 



681 



25.67 

 25.67 

 31.81 

 43.43 

 44.57 

 30.86 

 27.60 

 25.33 

 32.26 



1.38 





Chico 



1.75 





Arlington 



1.30 



1909 



Pullman 



2.97 





Chinook 



Havre 



1.84 











1910 



Pullman 



103 

 91 



1.37 



1912 



New London 



1.80 







Total 



77 



9,074 



2,784 



4,780 











30.68 



1.72 

















In Table II there are no data to indicate what percentage of flowers 

 actually tripped by insects or other natural agencies form pods. 

 Data on this point were secured by observations at PuUman, Wash., 

 in 1908. Flowers which had been tripped naturally were marked by 

 putting a drop of insoluble drawing ink on the calyx of each. The 

 racemes were then inclosed in netting to prevent other insect visits. 

 The results are shown in Table III. 



Table III. — Pods and seeds producedfrom alfalfa flowers trippedunder natural conditions. 





Number of flowers. 



Number of pods 

 developed from— 



Total number of 

 seeds developed. 



Raceme. 



In ra- 

 ceme. 



Tripped. 



Not 

 tripped 

 when in- 

 closed. 



Tripped 

 flowers. 



Flowers 



not 

 tripped 

 when la- 

 closed. 



From 

 tripped 

 flowers. 



From 

 flowers 



not 

 tripped 

 when in- 

 closed. 



No. 1 *..... 



11 

 11 

 16 



8 

 17 

 10 

 18 



9 

 11 

 13 

 15 

 11 



4 

 8 



11 

 6 



11 

 5 



10 

 9 

 6 

 8 

 8 

 7 



7 

 3 

 5 

 2 

 6 

 5 

 8 



2 



1 



3 

 7 

 4 

 2 

 8 

 5 

 4 

 6 





2 

 33 

 55 



2 

 11 

 14 



2 

 33 

 11 



3 

 25 





No.2 







No.3 







No. 4 







No.5 



1 



1 



No. 6 





No.7 







No. 8 







No. 9 



5 

 5 



7 

 4 







No. 10 







No. 11. 







No. 12 



2 



2 











Total 



150 



93 



57 



54 



3 



191 



3 







