160 AGRONOMY [Bot. Absts., Vol. V, 



trict, trials of cereals and legumes with and without fertilizers were carried out by a number 

 of farmers. Results showed the practice to be successful. In the South Coast district cereals 

 were tried without manures, with success. — L. R. Waldron. 



1169. Killer, J. Uber die Bewertung der Centaurea solstitialis als Charakterbegleitsame 

 bei der Herkunftsbestimmung von Kleesaaten. [Concerning the value of Centaurea solstitialis 

 as an indicator of the origin of clover seed.l Jour. Landw. 67: 109-110. 1919. — Centaurea 

 solstitialis has long been recognized as indicating a southern European origin of clover seed. 

 As this plant in recent years has been growing in Alsace in increasing abundance its seed may 

 also be found in clover seed from there. — C. E. Leighty. 



1170. Koerner, W. F. Auf welche Krankheitsformen ist beim "Burchsehen" und "Aus- 

 hauen" der zur Saatgewinnung bestimmten Kartoffelfelder besonders zu achten. [What dis- 

 eases are to be considered especially in going through and thinning out potato fields from which 

 seed potatoes are to be selected.] Illustrierte Landw. Zeitg. 39: 323-324. Fig. 252-259. 1919. 



1171. Lansdell, K. A. Some common adulterants found in agricultural seeds. I. Jour. 

 Dept. Agric. Union South Africa 1 : 26-31. Plates II-IV. 1920. 



1172. Lewis, A. C, and C. A. McLendon. Cotton variety tests. Georgia State Bd. 

 Entomol. Circ. 29. 20 p. 1920.- — Outlines tests with twenty-eight varieties of cotton (Gos- 

 sypium) for 1919 conducted in the following Georgia counties: Sumter, Stewart, Dooley, 

 Burke, Wilks, Douglas and Habersham. In each test, from ten to twenty varieties were 

 used. Summaries of the various tests and recommendations of the varieties for different 

 sections and under different conditions are given. Lists are appended of cooperative cotton 

 growers and of parties from whom cotton seed may be purchased. — T. H. Mc Hat ton. 



1173. Macpherson, A. Lucerne growing for seed. New Zealand Jour. Agric. 19: 369- 

 371. 1919. — -This article discusses the preparation of the seed bed, general cultural methods, 

 weather conditions, harvesting the seed crop, etc. Conclusions are drawn that good crops 

 of lucerne seed may be produced on well drained soil of average fertility. Very rich land and 

 soil supplied with an abundance of moisture produce herbage rather than seed. Thick stands 

 of lucerne are not favorable for good seed production. During the period devoted to the seed 

 crop, two crops of hay may be taken from thick stands, which will be found of more profit. 

 Old stands that are thinning out will often produce good crops of seed. The best practice for 

 seed production is to establish a special wide-spaced stand by sowing the seed in rows 28 inches 

 or more apart and cultivating two or three times. — N. J. Giddings. 



1174. Macpherson, A. Lucerne-culture tests at Ashburton Experimental Farm. New 

 Zealand Jour. Agric. 19: 288-293. 1919. — Experiments were conducted to indicate the proper 

 amount of seed ; the best method of sowing, and the effects of lime and fertilizers. As a result 

 of these tests it is recommended: Seed should be sown in drills from 14 to 21 inches apart, 

 to admit of cultivation ; that not less than 15 pounds of seed per acre should be used ; and that 

 lime should be used, but not fertilizers. — -N. J . Giddings. 



1175. Maiden, J. H. Chats about the prickly pear. No. 1. Agric. Gaz. New South Wales 

 31: 117-120. 1920. — A brief historical survey of Opuntia spp. as an Australian pest is pre- 

 sented.— L. R. Waldron. 



1176. Maiden, J. H. Chats about the prickly pear. No. 2. Agric. Gaz. New South Wales 

 31: 195-199. 1920. — Remarks on possible minor uses of Opuntia spp. — L. R. Waldron. 



1177. McDiarmid, R. W., andG. C. Sparks. Farmers' experiment plots. Potato experi- 

 ments, 1918-19. Agric. Gaz. New South Wales 31 : 37-42. 1920.— Yields are given for different 

 varieties in the New England district and the southwestern slopes at different points, with dif- 

 ferent manures and for different cultural methods. Artificial manures proved to be 

 valuable. — L. R. Waldron. 



