532 EXPERIMENT STATION RECORD. [Vol.43 



W. L. Miiicli; Potato Scab Control, l)y W. H. Martin; Maine Methods of Seed 

 Production, jjy E. Edmunds; The ('ost of Prochicins Potatoes in New Jersey, by 

 P. App ; Results of Fertilizer Experiments, by J. G. Liimian ; and Insect Prob- 

 lems, by T. J. Headlee. 



Rice cultivation in British Guiana, F. A. Stockdale {.Jour. Bd. Agr. Brit. 

 Guiana, 12 {WW), No. /f, pp. 2ii4-2h0). — The history and i)resent status of rice 

 culture in the colony are reviewed, and information jiiven regardinj^ varieties, 

 cultural methods, harvest practices, and croj) pests. Suj^j^estions are ottered 

 for the improvement of the crop by seed selection. 



The rice bean (Phaseolus calcaratus), A. II. Haywood {Affi: Gaz. N. S. 

 Walt'fi, 31 {1920), No. 4, pp. 2S9, 290, pj. /).— The rice bean (P. calcaratit.i), 

 said to be identical with the Jerusalem pea (P. trinervis), is briefly descril)ed, 

 and its use as a green mulch for bananas on the North Coast in New South 

 Wales is recommended. 



Sweet sorghum variety demonstrations, 1919, M. W. Henskl {N. C. Agr. 

 Col. Ext. Circ. 102 {1920), pp. 3-lJf, figs. 4). — Adaptation studies of sweet sor- 

 ghum varieties in several localities of North Carolina, carried on in cooperation 

 with the U. S. Department of Agriculture, are reported for 1919. Japanese 

 Seeded Ribbon (Honey) was first in average yield with 370.6 gal. of sirup per 

 acre, followed by Red Amber with 319 gal. and Sugar Drip with 218 gal. These 

 varieties required, respectively, 150, 143, and 133 days to mature. Long season 

 strains were found to be more profltable than early maturing varieties where 

 the period between killing frosts exceeded 120 days. The crop harvested when 

 the seed was in tlie dough or late milk stage produced a sirup superior to that 

 cut when even slightly overripe. 



Isolation of seed sugar beets, G. Gaudot {Jour. Agr. Pract., n. ser., 33 

 {1920), No. 20, pp. 364, 365, fig. 1). — A device is described for protecting seed 

 sugar beet selections from adventitious pollen, consisting of a hood of thin 

 clotli or gauze uplield by a strong stake driven into the soil close to the beet root. 

 The sides are extended by a frame of hoops and the bottom fastened to a band 

 of galvanized iron lialf buried in the ground surrounding the beet. A flap which 

 can be opened at will permits access to tlie interior. To facilitate fertilization 

 the frame is frequently agitated. Seed production is said to be less abundant 

 tlian when exposed to tlie open air, but the desired result is obtained. 



The beet sugar industry [in Victoria], W. L. Williams {Jour. Dept. Agr. 

 Victoria, 17 {1919), No. 12, pp. 722-729; 18 {1920), Nos. 1, pp. 15-24, figs. 7; 2, 

 pp. 65-74, fi(f'^- 4)-—--^ popular discussion of the development of the beet sugar 

 industry in Victoria, together with information on cultural methods, seed pro- 

 duction, sugar manufacture and by-products, cost data, and analyses. 



The question of fertilization [of sugar cane], A. Van Elk {Arch. Stiiker- 

 indus. Nederland. Indie, 27 {1919), No. 30, pp. i477-i482).— Experiments with 

 sugar cane are reported, comparing with anmionium sulphate, green manure, 

 ammonium sulphate alone, and with peanut cake. 



In the first comparison the yields obtained were about equal, but fertilization 

 with the use of green manure was the cheaper. In the second comparison 

 better results were obtained with the green manure combination. It is con- 

 cluded that green manure may be profitably used to replace concentrated nitrog- 

 enous fertilizer, especially on light soils. It was also found that the nitrogen 

 in the peanut cake was only about half as effective as that in ammonium 

 sulphate. 



Rice straw as a mulch for sugar cane, J. B. Harrison and R. Ward {Jour. 

 Bd. Agr. Brit. Guiana, 12 {WW). No. 4, pp. 251-258).— This reports fertilizer 

 experiments with sugar cane in British Guiana in continuation of work 

 previously noted (E. S. R., 40, p. 633). 



