326 



Journal of Agricultural Research 



Vol. Yl, No. 9 



LEAF AND SHEATH AREAS ^ 



The leaf and sheath areas of com, Blackhull kafir, and Dwarf mile were 

 determined at four stages of growth in 1914. The results of these meas- 

 urements are shown in Table VIII. Figures 2 and 3 represent these 

 areas graphically. • 



Table VIII. — Dry weight, leaf avA sheath areas of corn, kafir, and viilo at different 

 stages of growth in IQI4 at Garden City, Kans. 



Plant and period of growth. 



Corn. Pride of Saline. June 24, 1914. one 

 month from time of planting. 



Average. 



Kafir, Blackhull, June 24, 1914, one month 

 from time of planting. 



Average. 



Mile, Dwarf, June 24, 1914, one month from 

 time of planting. 



Average. 



Com, Pride of Saline. July 7, 1914, six weeks 

 from time of planting. 



Average. 



Kafir, Blackhull, July 7, 1914, six weeks 

 from time of planting 



Average. 



Milo, Dwarf, July 7, 1914, six weeks from 

 time of planting 



Average . 



Com, Pride of Saline, July 21. 1914, eight 

 weeks after planting 



Dry 

 Plant weight 

 ^'^"^ ' of leaves 



and 

 stems. 



No. 



Average. 



Kafir, Blackhull, July 21, 1914, eight weeks 

 from time of planting 



Average . 



Cm, 



IS- 2 

 9.6 

 9. 2 



7-5 

 7-'5 

 S-4 



o. I 

 6.6 

 7.0 



6-S 



50.0 

 54-7 



51.0 



27.S 

 31-4 

 31-0 

 29.9 



27- S 



29-5 



2S.3 

 23.4 

 24.5 

 26.8 



114. 6 

 137-2 

 149.2 

 140. I 

 102.8 



128. 7 



70. I 

 75- 9 

 60.7 

 63.5 

 67. 8 



Leaf area. 



Sq. in. 

 272.2 

 230.6 

 285.7 

 205.8 

 210. 2 



241. o 



141-3 

 291.9 

 145. o 



138.0 

 II6.8 



146.7 



140.0 



138-3 



149-0 



15s- 6 



141. o 



902.7 

 842-3 

 828.6 

 877-3 



754-3 



372-3 

 43S.0 

 484.0 

 420.7 

 338.2 



40S.6 



iq. cm 

 1,756 

 1,487 

 1,842 

 1,327 

 I-3S5 



I.SS3 



961 

 1 003 



787 



909 



5,822 



S,433 

 5, 344' 

 5,6,8 

 4,86s 



5, 424' 



2,401 

 2,82s 

 3, 122 



2,635 



402.4 

 456.4 

 363-9 

 343-2 

 397-3 



392- 



1,231.8 

 1,423-7 

 1,378-2 

 I, 266. 6 

 1,366.6 



1,333-4 



987. 

 96s- 

 829. 

 893- 

 689. 



63.5 



873-0 



2,595 

 2,943 

 2,347 

 2, 214 

 2,562 



2.532 



7,945 

 9,182 

 8,889 

 8,169. 

 8, Si 



8, 600, 



6,367 

 6,228 

 5,349 

 5.766 

 4.445 



5'63i-3 



Sheath area. 



Sq. in. 



24. I 

 15-0 



15.9 

 IS- 7 



9.8 



8.4 



Sq. cm. 



155-4 

 96.7 



154-4 

 S2.6 

 93-9 



9-8 



71. 2 

 67.8 

 81.2 

 54- o 

 67-3 



68. 3 



26.3 

 35-8 

 42- 7 



35-0 



37-4 

 37-0 

 32.2 

 31-9 



34- 



127.7 

 127. 2 

 13S-8 

 124.8 

 92.7 



122.3 



69. I 

 57-8 

 50-4 

 82. 8 

 42.9 



116.6 



102.8 

 100. 9 

 65-5 

 63-2 



54-2 



77-3 



62. 3 

 67.8 

 62.6 

 66.8 

 58.8 



63- 6 



459-0 

 43 7-3 

 523-5 

 348- 3 

 434-2 



440.4 



169.6 

 231-2 

 275-7 

 264.4 

 189-3 



226.0 



241-5 

 238.6 

 207.4 



205.4 

 211. 2 



220. 8 



822.2 

 820.7 

 895-5 

 805.2 



598.4 



7S8. 8 



445-8 

 334- S 

 325-0 

 534-4 

 276.9 



383-3 



1 In this paper tlie term "leaf area " means the surface inclosed by the margins of the leaves, 

 leaf surface exposed to the air therefore would be twice the leaf area. 



The total 



