No. 3, July, 1921] AGRONOMY 233 



1595. Flynn, H. C. K. Statistics of crops grown by Europeans in southern Rhodesia 

 for the season 1919-1920. Rhodesia Agric. Jour. 18: 9-16. 1921.— General crop statistics 

 for 1919-1920, compiled from reports sent in by farmers for that period. Figures are given 

 for maize, wheat, ground nuts, beans, kafir corn, sunflowers, buckwheat, cattle melons, 

 pumpkins, rice, Rapola, potatoes, teff grass, oat hay, Napier grass, millet, veld hay, tobacco, 

 and citrus orchards. — Mary R. Burr. 



1596. FRAPS, G. S. Feeding values of certain feeding stuffs. Texas Agric. Exp. Sta. 

 Bull. 245. 29 p. 1919.— Digestible matter and productive value of foods may be very differ- 

 ent. Tests were made with cottonseed meal and cottonseed hulls, showing that the former 

 has almost twice the digestible material but about four times the productive value of the 

 latter. Compositions and feeding values are given for acorns, alfalfa hay, bear grass, beet 

 pulp, corn cobs, cotton burs, cottonseed, peanut meal, prairie hay, rice bran, rice hulls, 

 Rhodes grass hay, soapweed, and Spanish moss. — L. Pace. 



1597. Fraps, G. S., and S. Lomanitz,s. The salt or sodium chloride content of feeds. 

 Texas Agric. Exp. Sta. Bull. 271. U p. 1920.— A rapid method of estimating chlorides is 

 described, and the chloride content of a number of feeds is given. Eastern alfalfa is lower 

 in chlorides than western. The question as to whether the chlorides in alfalfa are useful, 

 and whether an addition of salt to some alfalfa soils would be beneficial cannot yet be 

 answered. — L. Pace. 



1598. Harris, F. S. The agronomist's part in the world's food supply. Science 62: 395- 

 400. 1920. — The author, looking into the future, finds the problem of feeding an ever-increas- 

 ing population a more and more difficult one. An increased production will be called for, 

 which can be realized in 2 ways: 1st, by extending the producing area; 2nd, by increasing the 

 acre yield of the present cultivated area. The methods for enlarging the agricultural area 

 are discussed under the following headings: Increasing the irrigated area; extending dry 

 farming; draining the wet lands; and reclaiming the alkali lands. — A. H. Chivers. 



1599. HoEK, P. VAN. Verslag over den Landbouw in Nederland. [Report on Agriculture 

 in the Netherlands.] Verslag. en Mededeel. Directie Landb. 1920 •: 1-116. 1920.— Reports 

 are given on production and condition of farm crops, vegetables, fruits, seeds, bulbs; other 

 agricultural and horticultural activities in the Netherlands are likewise considered.— J. C. 

 Th. Uphof. 



1600. Hoffman. Klartoffeldiingungsversuche mit Kalisulfaten im Erntejahr 1920. [Po- 

 tato fertilizing experiments with potassium sulphate in the season 1920.] Mitteil. Deutsch. 

 Landw. Ges. 36: 116. 1921. — Potassium sulphate was compared with a potassium-magnesium 

 sulphate; no additional advantage resulted from the use of the latter. — A. /. Pieters. 



1601. Leipziger. Bericht iiber einige Gras- und Kleebau-betriebe Norddeutschlands. 

 [Report on some grass and clover seed operations of north Germany.] Mitteil. Deutsch. Landw. 

 Ges. 33: 134-135. 1921. — An account of a visit to several farms where grass and clover seeds 

 are grown as special crops. Selection of color for winter hardiness was being carried on near 

 Niendorf. — A.J. Pieters. 



1G02. Leppan, H. D. The production of foodstuffs for live stock in South Africa. South 

 African Jour. Indust. 3 : 1116-1130. 1920.— Agronomic production is related to rainfall, soils, 

 altitudes, and latitude, and the author discusses these factors for South Africa. The acre 

 yields of most crops are low, the average for maize being 7-10 bushels; the causes of the low 

 yields are said to be generally careless methods of farming and attempts to grow unsuitable 

 crops. Feed stuffs to supplement grazing are greatly needed and the making of silage is 

 urged. The author lists and discusses the chief summer and winter forage crops, noting that 

 "the cultivated grasses of promise in South Africa to-day are all indigenous to Africa, chiefly 

 tropical Africa." The most important summer forage crops are maize, lucerne, Teff grass 

 (Eragrostis Ahyssinica), millets {Chaetocloa, Echinochloa, Pennisetum), cowpeas, soybeans. 



