Oct. 15. 1914 



Water Requirement of Plants 



53 



Table XXX. — Sttmmary of water requirement measurements at Akron, Colo., in Igij, 

 based on dry matter produced — Continued 



Crop and variety. 



1913- 

 Com: 



China White 



Bloody Butcher 



Northwestern Dent . . 



Teosinte, Durango 



Grass, buffalo and grama. 



China WhiteXTeosinte . 

 Com: 



Hopi 



China WhiteXHopi. 



Indian Flint 



Pigweed 



Grass, buffalo 



Sorghum: 



Minnesota Amber. . . 



Red Amber 



Purslane 



Millet, Kursk 



Botanical name. 



Zea mays 



. . . .do 



do 



Euchlene mexicana 



Bulbilis dactyloides and 

 Boutelona gracilis. 



Zea mays 



...do 



...do 



Amaranthus retroflexus. 

 Bulbilis dactyloides 



Andropogon sorghum . 



. ...do 



Portulaca oleracea. . . , 

 Chaetochloa italica . . 



Water require- 

 ment. 



4I3±4 

 405 ±7 

 399±i2 

 3go±ii 

 389±i2 



o76±4 



350±8 

 345±3 

 342 ±5 

 320±7 

 3o8±i7 



298 ±2 

 296 ± I 



292±II 

 286 ±4 



Relative as 



compared 



with Kubanka 



wheat . 



o. S4io. or 

 82 ± .02 

 8o± .03 

 79± . 02 

 78± -03 



-6± . 01 



71 ± .02 

 70rt . 01 

 6g± .01 

 05 ± .02 

 61 zb .04 



6o± . 01 

 59± .or 

 59 ± .02 

 58± .01 



Table XXXI. — Summary of water-requirement measurements in IQTJ lictsed on grain, 

 tubers, roots, or fruit produced 



Crop and variety. 



I9I3- 

 Sunflower; 



Annual 



Narrow-leaved 



Flax 



Pea, Canada field 



Bean, soy 



Potato, Irish Cobbler 



Bean , Mexican 



Oats, Swedish Select 



Cantaloupe 



Bean, Nav-y 



Oats, Burt 



Cucumber 



Cowpea 



Turnip 



UTieat, Kubanka 



Com, Northern Dent 



Watermelon 



Sorghum, Red Amber 



Com, Indian Flint 



Sorghum, Minnesota Amber 



Botanical name. 



Hclianthus annuus. .. 

 Helianthus petiolaris 

 Linum usitatissimum 



Pisum sativum 



Glycine soja 



Solanum tuberosum . 

 Phaseolus vulgaris . . 



Avena sativa 



Cucumis melo 



Phaseolus vulgaris . 



Avena sativa 



Cucumis sativa 



Vigna sinensis 



Brassica campestris . . 



Triticum durum 



Zea mays 



Citrullus vulgaris . . . 

 Andropogon .sorgum. . 



Zea mays 



Andropogon sorghum. 



Water require- 

 ment. 



384 ±383 

 o58±i32 



83 s ±52 



322±I2I 

 053 ±51 



027±i97 

 888 ±62 



876±55 

 824±237 

 646 ±36 



641 ±33 

 61 1 ±67 



S76±32 

 53o±i32 



322±l6 



241 ±77 

 146 ±49 

 ioo±3i 



8S4±3i 

 765 ±12 



Relative water 



requirement 



compared 



with Kubanka 



wheat. 



