AGRICULTURAL BOTAXY, CHEMISTRY AND PHYSIOLOGY OF PLANTS 959 



Table II. — Length of Roots at different Periods of Vegetation. 



Name of plant 



A. — Cultivlii. on natural profile : 



1. Avcna sativa 



2. Liniim iisitatissimum. . . 



3. Vicia sativa 



■^ (4. Raphanus Raphanistrum 

 ^ / 5. Chcnopodium album . . 



B. ~ Cultiv'tn. on embaiiknitnt : 



6. Avena sativa 



7. Panicum miliaceum .... 



8. Zea mays . . 



9. Lupinus albus. 



10. Vicia Faba . . 



11. Vicia sativa 



12. Vicia villosa 



13. Pisum arvense . . . . 



14. Linum usitatissimum . 



15. Sinapis alba . . , . 



16. Polygonum Fagopyrum. 



Hdianthus annuus 



Cannabis sativa 



Solanum tuberosum .... 



20. Raphanus Raphanistrum 



21. Cap sella Bursa-pastoris 

 I 22. Viola tricolor .... 



I 23. Thlaspi arvense . . . 



24. Chenopodium album ■ 



25. Berteroa incana . . . 



26. Agrostemma Githago . 



27. Centaurea Cyanus . . 



ist period: ' 2„d period :' 3rd Period : 

 Ger- Fructi- 



mination Flowering | ^^^^^ 



79.2 cm. 



35-2 



26.4 



13.2 



26.4 



52.8 

 39-6 



30.8 

 52.8 



35-2 



30.8 

 30.8 

 48.4 

 35-2 

 39-6 

 26.4 



30.8 

 35.2 

 61.6 

 26.4 



not y 

 gerniin; 



26.4 

 26.4 



ct ! 

 ated ; 



Differences 



between the 

 2nd and the 

 I St period 



between the 



3rd and 2nd 



period 



132.0 cm. 140.8 cm. 

 52.8 ! 70.4 

 88.0 88.0 



30.8 35.2 



30-8 1 35.2 



92.4 

 92.4 



j 127.6 



I unwashed 

 roots 



failure 



left till spring 

 of 1915 



unwashed 

 roots 



70.4 



79.2 

 74.8 

 74.8 

 70.4 

 48.4 

 48.4 



83.6 



105-5 

 88.0 



74.2 

 70.4 

 unwashed 



roots 



failures 



101.2 

 52.8 

 26.4 

 35-2 

 35-2 

 44.0 

 48.4 

 66.0 

 66.0 



123.2 

 52-8 

 39.6 

 48.4 

 48.4 

 44.0 

 52.8 

 88.0 



105.6 



52.8 cm. 

 17.6 

 61.6 

 17.6 

 4.4 



39-6 

 52.8 



35-2 

 48.1 

 44.0 

 26.4 

 35-2 

 8.8 

 22.0 



39-6 

 26.4 



39.6 

 39-6 



8.S cm. 

 17.6 

 0.0 

 4.4 

 4.4 



35-2 



4-4 

 30.8 

 13.2 



8.8 

 30.8 



32.0 



0.0 



13.2 



13.2 



13.2 



0.0 



4.4 



22.0 



39-6 



