FIELD 0ROP8. 36] 



plate receiving incomplete fertilizers yielded juices of greater purity than those 

 treated with complete applications. 



Wheat growing-, I'. C. Bi rtis and L. A. Moorhouse Oklahoma Sta. Bul.65,pp. 

 Wheal experiments at the statioD were begun in L892. The results up to 1901 

 have been pre\ iously uoted i E. S. R., L2, pp. 846, 850 , and those secured since thai 

 date are reported in this bulletin. \ Bummarj for the entire period is given. 



A half-acre plat receiving 7..". tons of barnyard manure the first year of the test and 

 5.5 tons the second year yielded from 6 consecutive crops 82.9 bu. of wheat, a- com- 

 pared with 53.1 bu. on a like plat withoul manure. The first and Becond years the 

 manured plal yielded 18.6 and L8.7 bu. more per acre, respectively, than tin- unma- 

 tmred plat, bul the last year there was a difference of only 3.1 bu. in its favor. 

 Nearly 2£ bu. of wheal was obtained for each ton of manure applied per acre. In 

 isolated experiments of this kind an average yield of 32.4 bu. from manured land and 

 of I 1. 1 bu. per acre Erom unmanured land was obtained in L894, and of 27.5 bu. from 

 manured land and L4.5 bu. from unmanured land in 1899. These experiments were 

 made on practically virgin Boil. 



[n a test covering 5 consecutive years plats plowed the middle of July averaged 

 27.1 bu. per acre; plats plowed the middle of August, 24.2 bu., and those plowed the 

 i ni' Idle of September, l"_\ 1 bu. In July the ground was free from weeds and in better 

 condition for plowing than later in the season. The early plowing also formed the 

 best ^'{'il bed. 



Experiments on the time of seeding, carried on tor- 5 seasons from 1899 to 1904, 

 gave an average yield of 24.28 bu. per acre on plats seeded September 10 to 20, 27. 19 

 hn. on plats seeded < October L0 to 20, and 17.38 bu. on those seeded November L0 to 

 20. The late-seeded plats, generally severely damaged byrust, produced thepooresl 

 quality of grain. Seeding late in November gave in one experiment an average of 

 only 5.4 bu. per acre, the grain weighing only 45 lbs. per bu. The best results were 

 secured from seedings made from September 20 to < October 10. 



The results with different quantities of seed per acre show that 5 to 6 pk. per acre 

 usually gave better yields than 3 to 4 pk., but differed but little in yield from the use 

 of 8 pk. In general, moderately thick seeding, or the use of about 6 pk. per acre, is 

 considered safest. 



In 2 years 1 work on pasturing wheat the plats not pastured averaged 2.45 bu. per 

 acre more than plats pastured until .March 1, :;.."> bu. more than plats pastured until 

 the end of March, and 9.66 bu. more than those pastured to the middle of April. Late 

 pasturing retarded ripening and made the wheat moresubjeel to rust. When wheat 

 is to be pastured, seeding 10 days earlier is recommended if later seeding is do! 

 necessary to avoid insect attacks. 



The following varieties, most of them tested from 8 to L0 years, are considered good 

 varieties forOklahoma: "Soft smooth wheats — Early Red Clawson, Fultz, and German 

 Emperor; soft bearded wheats — Fulcaster, Missouri Bluestem, and New lied Wonder; 

 hard smooth wheats— Red Russian and Oregon Red; and hard bearded wheats — Sibley 

 New (.olden. Turkey, Weissenl >urg, ( 'riinean. and Theiss." None of these vari< 

 belong to the durum wheats. 



Soil treatment for wheat on the poorer lands of the Illinois wheat belt, 

 ('. G. Hopkins (Illinois Sta. Circ. 97, pp. 02).— The management of this particular 

 class of soil is discussed and 4 years' results on 4 soil experiment fields in southern 

 Illinois are reported. The plan of these experiments has been previously described 

 (E. S. R., 15, p. 4(>9). In li)<»"> an average yield of 29 bu. of wheat was secured on 

 treated soil, and only 9 l>u. on untreated soil. 



On the Odin field in L904, an undrained plal on which Leguminous crops are grown 

 and lime and phosphorus applied, produced 21.6 bu. of \\ heat per acre, of which 7.9 

 bu. are credited to the land and 13.7 bu. to the treatment. On the corresponding 

 tile-drained plat 21.5 bu. per acre was secured, 6.7 being credited to the untreated 



