738 EXPERIMENT STATION RECORD. 



It was observed that the Egyptian type of cotton was less susceptible to the 

 shedding of the buds and young bolls than the Upl-and cotton and that the dif- 

 ferences in habits of growth and methods of picking render the Egyptian cotton 

 superior to the Upland type as a family crop. It is believed that the successful 

 production of Egyptian cotton in Arizona and southern California does not 

 justify expectations of similar results in Texas where the conditions are essen- 

 tially different and where the Durango variety is preferable for the irrigated 

 districts. 



Cotton crop of the United States, 1790-1911, G. K. Holmes {U. S. Dept. 

 Agr., Bur. Statis. Circ. 32, pp. 9). — The production, value, domestic exports, 

 net imports, and consumption of cotton in the United States for the years 1790 

 to 1911, inclusive, are reported in tabular form. Prior to 1867 no figures for the 

 average yield per acre, and prior to 1869 uo data for the value of lint, are 

 reported. 



Hop crop of the United States, 1790-1911, G. K. Holmes (U. S. Dcpt. 

 Agr., Bur. Statis. Circ. 35, pp. 8). — In so far as the data are available the pro- 

 duction, value, domestic exports, imports, and consumption of hops for the 

 United States from 1790 to 1911, inclusive, are given in tables. 



Potato culture, H. J. Eustace (Michigan Sta. Circ. 15, pp. 4, fiff- !)• — Popular 

 notes on the culture of potatoes are presented. 



Potato spraying experiments, 1902-1911, F. C. Stewart, G. T. Fbench, 

 and F. A. Sirrine (Xcw York State Sta. Bui. 3-^9. pp. 99-139).— This bulletin 

 gives a detailed account of potato spraying experiments conducted in 1911 and 

 summarizes the results of similar experiments made during the 9 years pre- 

 ceding and already noted (E. S. R., 25, p. 442). 



The main experiments were conducted at Geneva and Riverhead. Long Island, 

 and at each place one series of plats received annually 3 sprayings of Bordeaux 

 mixture and another series 5 to 7 sprayings. At Geneva, 3 sprayings resulted 

 in an average increase of 69 bu. per acre for the 10 years as compared with 97.5 

 bu. per acre for from 5 to 7 sprayings. In the Long Island experiments, 3 

 sprayings gave a 10-year average increase of 25 bu. per acre and from 5 to 7 

 sprayings an increase of 45.7 bu. 



The results of experiments made by farmers during 9 consecutive years to 

 determine the actual profit in spraying potatoes under farm conditions showed 

 an average increase of 36.1 bu. per acre in favor of si^raying. The total expense 

 of spraying in these experiments was $4.74 per acre and the net profit $14.43 

 per acre. In 205 experiments carried out entirely by farmers themselves over a 

 period of 7 years, the average increase in yield was 54.3 bu. per acre. 



Spraying thoroughly when the plants are from 6 to 8 in. high and repeating 

 the operation at intervals of from 10 to 14 days throughout the season Is 

 recommended. 



Ten years of potato spraying, F. H. Hall (yew York State Sta. Bui. 3'i9, 

 popular ed., pp. 11). — This is a popular edition of the above. 



A preliminary report on rice growing in the Sacramento Valley, C. E. 

 Chambliss (L'. /8. Dcpt. Agr., Bur. Plant Indus. Circ. 97, pp. 10, pis. 4). — Tests 

 with 300 varieties of rice were begun in 1909 in the Sacramento Valley on a 

 black adobe soil of a close compact structure. The seed of each variety was 

 planted with a drill to a depth of 1^ to 2 in. at the rate of 80 lbs. per acre on 

 plats consisting of 4 rows a rod each in length and 7 in. apart. In 1910, a 

 selection of 13 varieties from the 300 was tested on t'c-acre plats. The yields 

 for the different varieties ranged from 23.1 to 154 bu. per acre and the growing 

 season from 142 to 193 days. In another test in 1910 in which the yield was 

 estimated upon the actual yield from plats ^-acre in size the Wataribune (G. I. 



