318 



AGRICULTURAL INDEX 



Crops — United States— Continued 



U S crop report for the year 1920. Wallaces' 



F 45:2890 D 31 '20 

 United States crop summary for March. 



Monthly Crop Rep 5:25 Mr '19 

 United States crop summary for May. 



Monthly Crop Rep 5:45-7 My '19 

 United States crop summary for June. 



Monthly Crop Rep 5:53 Je '19 

 United States crop summary for July 1. 



Monthly Crop Rep 5:61-7 Jl '19 

 United States crop summary for August 1. 



Monthly Crop Rep 5:73 Ag '19 

 United States crop summary for September 



1. Monthly Crop Rep 5:85-90 S '19 

 United States crop summary for October 1, 



1919. map Monthly Crop Rep 5:97-102 O '19 

 United States crop summary for November 1. 



Monthly Crop Rep 5:109-13 N '19 

 United States crop summary for March. 



Monthly Crop Rep 6:21 Mr '20 

 United States crop summary for May. 



Monthly Crop Rep 6:41 My '20 

 United States crop summary for June. 



Monthly Crop Rep 0:49 Je '20 

 United States crop summarv for July 1. 



Monthly Crop Rep 6:61 Jl '20 

 United States ci^op sumimary for September 



1. Monthly Crop Rep 6:93 S '20 

 United States crop summary for October 1. 



Monthly Crop Rep 6:109 O '20 

 United States crop summary for November 



1. Monthly Crop Rep 6:121 N '20 

 United States crop summarv for Mar. Month- 

 ly Crop Rep 7:25 Mr '21 

 United States crop summarv for May. Monthly 



Crop Rep 7:49 My '21 

 United States crop summary for June. Month- 

 ly Crop Rep 7:61 Je '21 

 United States crop .'^ummarv for July 1. 



Monthly Crop Rep 7:73 Jl '21 

 United States crop summarv for Aug. 1. 



Monthly Crop Rep 7:89 Ag '21 

 United States crop summarv for Sept. 1. 



Monthly Crop Rep 7:105 S '21 

 United States final crop leport for 1919. Ag 



Gr7. of Canada 7:204-5 F '20 

 Unusually large crops in prospect. Am Fert 



53:71-2 Ag 14 '20 

 Value of farm crops in the United States. 



Ip '21 U.S. Bur. of the census, Washing- 

 ton, D.C. 

 What American farmers produce. E. T. Mere- 

 dith. Jersey B 39:3457 D 22 '20 

 When crops are harvested. Monthly Crop Rep 



5:104 O '19; Same. Ag Gaz of Canada 6:1106 



D '19 

 When crops are harvested. Monthly Crop 



Rep 6:100-1 S '20 

 Year of good crops. B. W. Snow. O Judd 



Farmer 68:1458 O 9 '20 

 Year of hard work — short crops. B. W. Snow. 



O Judd Farmer 67:521 O 11 '19 

 Yield of principal crops per acre in United 



States, 1866-1918. Mo Ag Bd B v 17:62 Ja 



'19 



Seo also United States — Crop estimates, 

 Bureau of 



Virginia 



Fertilizers and their relation to crop produc- 

 tion in Virginia. T. B. Hutcheson and T. K. 

 Wolfe. 11 Va Ag Exp B 221:1-74 '19 



Virginia crop estimates. Va Ag Dept B 161: 

 17-19 F '21 



Wisconsin 



Acreage in cultivated crops including tame 

 hay, 1909. 1917 and 1918. Wis Ag Dept B 

 20:228-9 '18 



Agricultural statistics for Wisconsin, 1919. 

 J. A. Becker, maps Wis Ag Dept B 28:1-99 

 n.d. 



General .summary; acreage, production and 

 value of crops in 1918, 1917 and 1909. Wis 

 Ag Dept B 20:230-1 '18 



Wisconsin agricultural statistics for 1918; an- 

 nual report. W. F. Callander and J. A. 

 Becker, maps Wis Ag Dept B 21:217-88 '19 



Wisconsin crops. Hoard's D 58:1223 Ja 16 '20 

 Crops, Rotation of. See Rotation of crops 

 Crops, Water requirements of. See Water re- 

 quirements of plants 



Crops arid climate. See Climate; Plants, Effect 



of climate on 

 Crops and soils 



Action of one crop on another. S. Pickering, 

 il Royal Hort Soc J 43,pts 2-3:372-80 F '19 



Crops and soils day at Ames, il Wallaces' 

 F 46:943 Jl 8 '21 



Crops and their relation to the soil. W. C. 

 Haynes. Purdue Ag 13:332 Ap '19 



Effect of continuous cropping upon the major 

 soil nutrients. G. R. Stevi^art. Soil Sci 11: 

 321-3 Ap '21; Same. Tropical Ag 56:391-3 

 Je '21 



Effect of season and crop growth on the 

 physical state of the soil. D. R. Hoagland 

 and J. C. Martin. J Ag Research 20:397-404 

 D 1 '20 



Influence of higher plants on bacterial activi- 

 ties in soils. T. L. Lyon. Am Soc Agron J 

 10:313-21 D '18 



Nitrates, nitrification, and bacterial contents 

 of five typical acid soils as affected by lime, 

 fertilizer, crops, and moisture. K. A. Noyes 

 and S. D. Conner, bibliog il J Ag Research 

 16:27-42 Ja 13 '19: Abstract. Int R Sci & 

 Prac Ag 10.no 7:817-18 Jl '19 



Nitrogen relations of certain crop plants 

 when grown alone and in association. R. C. 

 Wright, il Am Soc Agron J 11:49-66 F '19 



Plants of acid soils. G: D. Fuller. Bot Gaz 

 71:244-5 Mr '21 



Crossbreeding. See Hybridization 



Crossing over. See Chiasmatype theory 



Crotonic acid 



Influence of phosphates on the action of 

 alpha-crotonic acid on plants. J. J. Skinner 

 and F. R. Reid. il Am J Bot 6:167-80 Ap '19 

 Crown gall 



Bacterium tumefaciens — Smith and Town- 

 send. E. M. Doidge. il J Dept Ag S Africa 

 3:64-7 Jl '21 



Behavior of crown gall on the rubber plant 

 (ficus elastica). M. Levine. bibliog il My- 

 col 13:1-11 Ja '21 



Crown gall. W. G. Sackett. Better Fruit 13: 

 10 P '19 



Crown-gall of alfalfa. O. T. Wilson, bibliog 

 il Bot Gaz 70:51-68 Jl '20 



Effect of crowngall inoculations on bryophyl- 

 lum. E. F. Smith, il J Ag Research 21: 

 593-8 Jl 15 '21 



Effect of crown gall upon a yovmg apple or- 

 chard. L. Greene and I. E. Melhus. bibliog 

 il la Ag Exp Research B 50:147-76 '19 



Fatality of crown gall in apple orchards. J. 

 M. Van Houten. Better Fruit 14:9 O '19 



Giant crowngalls from the Florida Ever- 

 glades. B. T. Galloway. ilPhyt 9:207-8 My '19 



Growth of apple trees injured in the nur- 

 sery by crown gall and woolly aphis. W. J. 

 Schoene and R. R. Reppert. (B. v. l.no. 2) 

 lip il '19 Va. State crop pest comm., 

 Blacksburg 



Isolation of the organism causing crown gall 

 on chrysanthemum frutescens in Britain. H. 

 AValkden. Ann Bot 35:137-8 Ja '21 



Orchards of galled trees not lasting. J. M. 

 Van Houten. Am Fruit Grower 40:36 .Ta '20 



Successful removal of crown gall. H. E. 

 Drobish. Pacific Rural Press 100:607 N 6 '20 



Treatment for crown gall. H. P. Stabler. Cal 

 Cultivator 54:947 Je 12 '20 

 Crownwart. See Alfalfa crown wart 

 Crows 



Corbie; story of a crow. E. M. Patch, il 

 Country Life 36:122+ My '19 



Crow (corvus brachyrhynchos Brehm). C. E. 

 Sanborn and others. Okla Ag Exp B 128: 

 1-8 '19 



Crow in its relation to agriculture. E. R. 

 Kalmbach. il map Farmers' B 1102:1-20 '20 



Crow in Michigan. A. C. Conger. Mich Ag Exp 

 Quar B V 3:108-9 P '21 



Crowsi and hawks. Nat Stock & F 45:364 Jl 

 2 '21 



Crows, chickens and grasshippers. Dakota 

 F 39:924 Je 1 '19 



Destruction des corbeaux. G. Gaudot. J Ag 

 Pratique 35:159 F 26 '21 



Plans made for killing crows, il Prac F 115: 

 140 Ap 1 '19 



