No. 4, February, 1922] AGRONOMY 229 



and Uruguay are discussed. Directions are given for planting and harvesting, and making 

 silage, of sorghum and corn. — John A. Stevenson. 



1505. Ruby, I\I. J. Essais de sorgho et mais a sucre en vue de la production de I'alcool 

 industriel. [Experiments with sorghum and sweet corn for production of industrial alcohol.] 

 Ann. Sci. Agron. Fran^aise et Etrangere 37: 155-161. 1920. — Maize and sorghum were suc- 

 cessfully grown for sugar in the fertile and irrigable lands of the plain of Roussillon (Eastern 

 Pyrenees). On the basis of field experiments with 4 varieties of sorghum and 5 of maize, 

 sorghum is considered preferable because it makes greater vegetative growth, is richer in 

 sugar, and is not injured by the European corn borer (Pyrausia nubilalis), which consider- 

 ably reduced the yield of maize. — .4. B. Beaumont. 



1506. ScASSO, Jos:S M. Instrucciones practicas para preparar la par/a- silo o silo al aire 

 libre y el silo comun en tierra. [Instructions for making pit and stack silos.] Bol. Ministerio 

 Agric. Nacion [Argentina] 26: 60-87. 19 fig. 1921. — The author gives directions for making 

 various types of pit and stack silos adapted to conditions in Argentina. — John A. Stevenson. 



1507. Schubert. Die Feststellung der Ertragssteigerung auf Dauerweiden. [Deter- 

 mining increased yields on permanent pastures.] Mitteil. Deutsch. Landw. Ges. 36: 338-339. 

 1921. — The author points out the difficulties in determining returns from treating pastures 

 and proposes using 1 herd only, shifting it from one field to another. Two experiments on 

 fertilizing pastures showed that applying nitrogen caused increased live weight and milk 

 yields which far e.vceeded the cost of the fertilizer. — A. J. Pieters. 



1508. ScHULTZ, E. F. El problema de los pastos en Tucuman. [The problem of forage 

 crops for Tucuman.] Rev. Indust. y Agric. Tucuman 10: 59-74. 9 fig. 1919. — The Tucuman 

 experiment station has tested many plants to secure forage crops resistant to the adverse 

 weather conditions, as scarcity of pasturage and forage during the dry seasons causes heavy 

 losses to cattle raisers. Peruvian alfalfa is much superior to the native type, giving 5 cuttings 

 as against about 3 for the latter. It is very resistant to cold, but is injured by excessive rain. 

 Phalaris bulhosa resists cold but is difficult to establish by seeding. Increase by division 

 of old plants has proved more satisfactory. Paspalu-m dilataium was abandoned because of 

 the presence of a fungus (Claviceps) in the spikelets which is reported as killing the stock. 

 Rhodes grass is considered the best of all forage crops that can be grown without irrigation. 

 Sudan grass is very resistant to drouth, a rapid grower and high yielder. Natal grass was 

 not satisfactory. Cow peas can be used in rotations with other crops and are well adapted 

 to all parts of the country. Sweet sorghums, rape, timothy, Dactylis glomerata, Lolium spp., 

 Festuca sp., and Poa pratensis are suited to certain parts of the province. — John A. Stevenson. 



1509. ScHULTZ, E. F. La batata forrajera "Dahomey." [The Dahomey sweet potato as 

 a forage crop.] Rev. Indust. y Agric. Tucuman 10: 100-108. 5 fig. 1919. — Until the variety 

 Dahomey, secured from U. S. A. Department of Agriculture, was grown in Tucuman, sweet 

 potatoes had been grown mainly for human food. The Dahomey is recommended for animal 

 feeding because of its large yields, and is in addition superior to the native variety for human 

 consumption. The presence of Rhizoctonia violacea constitutes a drawback to its culture. 

 Cultural directions are given. — John A. Stevenson. 



1510. ScHULTZ, E. F. Notas adicionales sobre la grama Rhodes. [Additional notes on 

 Rhodes grass.] Rev. Indust. y Agric. Tucuman 11: 45-54. 7 fig. 1920. — Rhodes grass has 

 survi-ved temperatures of from —7 to — 10°C. and is also very resistant to heat and drouth. 

 The 1st cutting, obtained 49 daj's after seeding, averaged 25,000 kgr. of green feed per hectare, 

 the 2nd 13,000. Stock pastured on the grass gained weight satisfactorily and without injuring 

 the stand. The grass is easily eradicated. Seeding should be done preferably in October 

 or November. — John A. Stevenson. 



1511. ScHULZ, A. Getreidestudien I. Abstammung und Heimat des Roggens. [Place 

 of origin and descent of cultivated rye.] Bar. Deutsch. Bot. Ges. 37: 528-530. 1919.— The 



