442 EXPERIMENT STATION RECORD. [Vol. 40 



Yields of plant cane from the drained plat amounted to 34,142 kg. per hectare 

 (about 15.19 tons per acre), and the yield of stubble was 48,609 kg. as compared 

 with 31,198 and 38,273 kg. per hectare, respectively, from the undrained plat. 

 Analysis of the juice showed 11.9 per cent sucrose for the cane grown on the 

 drained plats and 12.2 per cent for that grown on undrained plats for both 

 plant and stubble cane. 



Avoiding frost damage to cane stools, A. H. Rosenfeld {Sugar [Nets York], 

 20 (1918), No. 5, pp. 182, 183). — The author briefly describes experiments begun 

 at Tucum&n in 1912 to ascertain the effect upon the yield and stand of sugar 

 cane of covering the stubble to prevent injury from fro^r. < 'ane cut in June 

 was covered about two weeks later with soil thrown up on each side of the 

 row, and the following crop was harvested August 9, 1913. The covered stub- 

 ble yielded at the rate of 30,534 kg. per hectare (about 17..7.I tons per acre), 

 with 719 stalks per row of 100 meters (about 328 ft.), as compared with 3"..'. »7< > 

 kg. per hectare from uncovered stubble averaging 700 stalks per row. 



Observations were also made of the effect of frost injury upon cane harvested 

 at different times. In 1912 a series of cane rows corresponding to the un- 

 covered rows described above were harvested June 22, and a second series 

 corresponding to the covered row was harvested August 2. The 1913 crop 

 was harvested July 24, yielding at the rate of 31.740 kg. per hectare for the 

 August stubble and 23,100 kg. for the June stubble. The average number 

 of stalks per row of 100 meters was 628 and 519, respectively. 



Sweet tussock (Phalaris bulbosa), A. Borro (Rev. Faritlt. Agron. \i Vet. ha 

 Plata, 2. nt., IS (1918). No. U pp. 1-32. fi'is. .'/).— The production and use of 

 P. bulbosa, said to be a valuable forage crop for Argentina, is described. 



Some studies in blossom color inheritance in tobacco, with special reference 

 to Nicotiana sylvestris and N. tabacum, II. A. Ai.i.akd {Amer. Nat., SS [1919), 

 No. 62). pp. ?. f '-.s^). — Grosses of pink-flowered with carmine-flowered varieties 

 of tobacco and of carmine or pink-flowered strains with white flowered sort 

 are briefly described. The white-flowered types used included N. $ylve»tria 

 and N. tabacum; the pink-flowered varieties Connecticut Broadleaf, 70-leaf 

 Cuban, and .Maryland Mammoth; and the carmine-flowered strain was a variety- 

 sold for ornamental purposes as a giant red-tlowering tobacco. 



Carmine and pink behaved as unit characters, carmine being dominant. In 

 the Fi generation perfect Mendelian segregation occurred, approximating very 

 closely the theoretical ratio of three carmines to one pink. Extracted recessive 

 pinks and homozygous carmines bred true, heterozygous carmines again break- 

 ing up into carmine and pink. Heterozygous plants of the F, generation crossed 

 with pure carmine produced all carmine blossoms, whereas when crossed with 

 pink both carmines and pinks appeared in approximately a 1:1 ratio. In 

 crosses of carmine or pink with white, white behaved as a recessive appearing 

 in the second generation. 



Trials with Reunion tobacco in 1916—17, (i. G, Atchini k< k (Dept. Aar. 

 Mauritius, dot. Scr., llul. 9 {1911), [BnglUh Bd.], pp. 12. pl^. 3).— The first 

 Season's results of an attempt to establish Reunion tobacco in Mauritius are 

 noted. 



A unique system of curing the crop, known as " Carotting," Is described, in 

 which the leaves are rolled into torpedo-shaped bundles and securely bound 

 with cord, the cord being tightened as the tobacco dries out. The "carottes" 

 are then stored for two years or more before being sold to the manufacturer. 



Our colonial agriculture. — VIII, Tobacco. <>. Dl Ykies (Onze Kokmiale 

 Landbouw.—VIH, Tabak. Haarlem: u. h. Tjeehk Wtiltnk «t Bon, 1916, v\> 

 VI 1 1 +79, figs. 47). — This is one of the series of popular handbooks edited by 



