'L I B RARY OF THE. UNIVERSITY Of ILLINOIS 63O.7 Ufcb AGRICULTURE CIRCULATING CHECK FOR UNBOUND CIRCULATING COPY >30. 7 ID LIBRARY Of TK JAN 221958 Bulletin 623 UNIVERSITY OF ILLINOIS WKKffl K tilffiS AGR |CULTURE LIBRARY, Performance of EXPERIMENTAL CORN HYBRIDS IN ILLINOIS 1957 LOCATION OF TEST FIELDS By R. W. Jugenheimer, K. E. Williams, and A. J. Crowley, Jr. NIVERSITY OF ILLINOIS AGRICULTURAL EXPERIMENT STATION CONTENTS Page MATERIAL TESTED 4 MEASURING PERFORMANCE 7 RESULTS OF THE TESTS 9 NORTHERN ILLINOIS: DeKalb Double Crosses (Table 2) 11 Three-Way, Single, and Double Crosses (Table 3) 14 Single and Double Crosses (Table 4) 15 Inbred Lines (Table 5) 16 NORTH-CENTRAL ILLINOIS: Peoria Double Crosses (Table 6) 17 Single and Double Crosses (Table 7) 20 Inbred Lines (Table 8) 21 CENTRAL ILLINOIS: Urbana Double Crosses (Tables 9 and 10) 21, 25 High-Oil Double Crosses and Standards (Table 11) 26 Three- Way, Single, and Double Crosses (Table 12) 27 Single and Double Crosses (Table 13) 28 Corn-Borer-Resistant Single Crosses and Double-Cross Standards (Table 14) 29 Inbred Lines (Table 15) 30 Corn-Borer-Resistant Inbred Lines (Table 16) 30 SOUTH-CENTRAL ILLINOIS: Brownstown Double Crosses (Table 17) 31 Single and Double Crosses (Table 18) 34 Inbred Lines (Table 19) 35 SOUTHERN ILLINOIS: Wolf Lake Top and Double Crosses (Table 20) 35 PERFORMANCE OF INBRED LINES IN SINGLE CROSSES (Table 21) 36 DOUBLE-CROSS HYBRID NUMBERS, PEDIGREES, AND INDEX TO TABLES (Table 22) . .38 Acknowledgment is due W. T. Schwenk and Sons, Edwards, Illinois, and the Shawnee High School, Union county, Illinois, for providing land for two of the tests; to W. C. Jacob and Robert Self for processing the data; to H. L. Portz, D. R. Browning, and E. Arnzin for con- ducting the Wolf Lake tests; and to L. H. Lindblom and H. M. Hayes for aid in field and laboratory. Tests in DeKalb, Champaign, and Fayette counties were located on University of Illinois farms managed by R. E. Bell, C. H. Farnham, and P. E. Johnson. PERFORMANCE OF EXPERIMENTAL CORN HYBRIDS IN ILLINOIS, 1957 By R. W. JUGENHEIMER, K. E. WILLIAMS, and A. J. CKOWLKY, JR.* ILLINOIS, the center of the corn belt, leads the surrounding states in corn yields per acre. During the ten years 1947-1956, Illinois farmers averaged 55 bushels per acre. These yields have resulted from the use of superior-performing hybrids and modern production prac- tices by efficient seedsmen and farmers. The high yields have brought total production to the point where corn breeders now have the oppor- tunity to reduce the emphasis on yield and to concentrate on developing inbred lines and hybrids that have improved standability, chemical composition, quality, machine harvestability, ear droppage, and resist- ance to such hazards as insects, diseases, cold, and drouth. The development and evaluation of superior-performing hybrids is a gradual but continuing procedure. For example, 111. 960 and Iowa 939 were widely grown in the early days of hybrid corn. These hybrid combinations were completely replaced by such hybrids as 111. 21 and U.S. 13. These latter hybrids are now rapidly being supplanted by such hybrids as 111. 1270, 111. 1570, AES 702, and AES 805. In turn, some of the new experimental Illinois hybrids appear to be superior to these popular combinations. Illinois hybrids continue to compare favorably with closed-pedi- greed hybrids. This is to be expected, of course, since many hybrid seed producers have put out Illinois hybrids under different names or have modified them only slightly by substituting one or two inbred lines. Although many seedsmen use private codes on Illinois hybrids in order to conceal the pedigree of their hybrids, in 1957 some twenty hybrids were grown and certified under their original Illinois designations. Much of this certified seed was grown for sale at wholesale or in inter- state commerce; a federal regulation prohibits the assignment of syn- onyms to corn hybrids used in interstate commerce. This report summarizes the results of advanced tests of experi- mental corn hybrids conducted in 1957 by this Station. Data from many preliminary tests involving specialized phases of the corn-research pro- gram are not included in this bulletin. 1 R. W. JUGENHEIMER, Professor of Plant Genetics ; K. E. WILLIAMS, Field- man in Agronomy; and A. J. CROWLEY, JR., Research Assistant. 4 BULLETIN No. 623 [January, Trials were made at five locations: in DeKalb county in northern Illinois, in Peoria county in north-central Illinois, in Champaign county in central Illinois, in Fayette county in south-central Illinois, and in Union county in southern Illinois. These five locations are representa- tive of the soil, rainfall, and length of growing season in their respective areas. Hybrids were compared for grain yield, maturity, shelling percent- age, standability, ear height and resistance to smut. Only hybrids of similar maturity were tested on the same field. A familiar hybrid whose maturity was considered the standard for the group is named in each table heading. Since most of the hybrids whose performance is recorded here are not yet in commercial use, the information about them is of most value to producers of hybrid seed. The 1957 performance of hybrids avail- able to farmers in commercial quantities is reported in Bulletin 622 of this Station. MATERIAL TESTED Double crosses for consideration of seedsmen. Three hundred and fifty-five different double-cross hybrids were grown at the five loca- tions. Most of the 300 selected Illinois hybrids were developed by the senior author. The seed was produced by controlled hand-pollination. The double-cross hybrids whose performance is shown in this report and the tables in which each appears are shown in Table 22, which also contains the pedigrees of the hybrids tested. In the pedi- grees, the order of the single crosses and of the lines in the single crosses has no significance; it does not indicate which should be used as seed or pollen parent. Illinois yellow hybrids are numbered consecutively below 2000 and above 3000. White hybrids are numbered in the 2000 series; these white hybrids are usually followed by the letter W. Hybrids that have performed well after regional testing in several corn-belt states have been designated AES (Agricultural Experiment Station) hybrids. Hybrids in the 600 series are similar to Illinois 1277 in maturity; those in the 700 series correspond in maturity to Illinois 21; those in the 800 series correspond to Illinois 1570; and those in the 900 series to Illinois 1851. The letter A or B following an Illinois hybrid number indicates that the combination of inbred lines making up the hybrid has been rearranged or permuted. For example, if the original pedigree of an Illinois hybrid was (1X2) (3X4), the letter A following the num- 1958] EXPERIMENTAL CORN HYBRIDS 5 her means that the hybrid was put together (1X3) (2X4), the letter B, (1X4) (2X3). A difference in reciprocals is not recognized in this method. When a short dash ( ) followed by a number occurs as part of an Illinois hybrid number, it means that a tested related line has been substituted for one of the inbred lines included in the original hybrid. The University of Illinois does not produce hybrid seed corn in commercial quantities. Hybrids that include new inbred lines may be produced under the "delayed-release" program adopted by the states in the corn belt. Multiplication of a new line is handled by the Station, and the production of single crosses in quantity is handled by the Illinois Seed Producers Association, Champaign, Illinois. If a new Illinois experimental hybrid gives satisfactory performance, the parental lines eventually are released for use by seedsmen. In order to make the results of corn research more quickly available to the public, the University of Illinois has adopted a slight modifica- tion of the "delayed-release" policy as it pertains to Illinois-developed inbred lines. Inbred lines of corn developed by the University of Illinois may be released to the public when they have demonstrated superior combining ability for yield, standability, disease resistance, insect resistance, chemical composition, male sterility, or other char- acters. Such Illinois lines may form a part of a new hybrid or be used in other ways by corn breeders. Inbred lines of corn developed by others will not be released without their approval. Hand-pollinated inbred seed of released lines will be available for a fee in packets containing 25 to 100 kernels. Releases will be announced annually on or about April 1. Inquiries may be addressed to the senior author, Agronomy Department, University of Illinois, Urbana, Illinois. Hybrids for prediction studies. Five sets of single crosses, two sets of three-way crosses, one set of top crosses, and five sets of inbred lines differing in maturity were tested in 1957. The three-way crosses and top crosses (Tables 3, 12, and 20) are a part of the "uniform" tests conducted cooperatively by cornbelt states and the U. S. Depart- ment of Agriculture. Seed of the unreleased inbred lines involved in these crosses was contributed by the state or by the federal corn breeder who developed them. Single crosses and inbred lines whose performance is reported in Tables 4, 5, 7, 8, 13, 14, 15, 16, 18, 19, and 21 were developed by the Illinois Station and tested only in Illinois. The following individuals are responsible at the present time for collecting seed of inbred lines, making the crosses, and distributing 6 BULLETIN No. 623 [January, crossed seed of the entries in the cooperative uniform tests: E. C. Rossman (Michigan), D. Linden (Minnesota), N. P. Neal (Wiscon- sin), and G. H. Stringfield (Ohio) Table 3; J. H. Lonnquist (Ne- braska), R. W. Jugenheimer (Illinois), and G. F. Sprague (Iowa) - Table 12; and W. R. Findley (Kansas), F. A. Loeffel (Kentucky), and M. S. Zuber (Missouri) Table 20. Performance of single-cross, three-way-cross, and top-cross hybrids is of interest to corn breeders, producers of hybrid seed corn, and farmers. Characteristics of single crosses such as yield, standability, and size, shape, and quality of seed definitely affect the practical pro- duction of hybrid seed corn. Some farmers are interested in growing single-cross and three- way-cross hybrids commercially because of their attractive appearance and extreme uniformity. Use of single-cross and three-way-cross data for the prediction of desirable double-cross com- binations creates additional interest in the performance of single crosses and three-way crosses. Prediction studies are an extremely valuable part of a research program. Methods are available to predict the performance of the better hybrid combinations without making and testing large numbers of undesirable crosses. For example, 1,225 single crosses and 690,900 double crosses are possible with 50 inbred lines. However, by using single-cross performance data, the corn breeder can predict which of the many possible double-cross combinations are likely to be most de- sirable. The following six single crosses can be made with four inbred lines: A X B, A X C, A X D, B X C, B X D, and C X D. The aver- age performance of the four non-parental single crosses gives the pre- dicted performance of a specific double-cross hybrid. For instance, the average yields of the four single crosses A X C, A X D, B X C, and B XD give the predicted yield of double cross (A X B) (C X D). The procedure in predicting acre yields and percentage of erect plants from single-cross data is shown on page 6 of Illinois Agricultural Experiment Station Bulletin 597. Similar predictions can be made for other characteristics. Predicted hybrid combinations, however, should always be thoroughly tested under field conditions before being put into commercial production. Three-way crosses also provide useful predictions of the perform- ance of double-cross hybrids. A large number of inbred lines can be compared, and the method is especially valuable where a desirable seed- parent single cross is available for use as a tester. Three-way crosses provide information on specific hybrids and may often eliminate the 1958] EXPERIMENTAL CORN HYBRIDS time and expense required for testing inbred lines in top crosses and single crosses. The procedure in predicting acre yields and percentage of erect plants from three-way-cross data is also shown on page 6 of Bulletin 597. Top crosses are simple to produce and often are useful in early stages of a breeding program. For example, a single cross from the corn belt of the United States might contribute genes for high yield and standability, and an open-pollinated variety from Europe might contribute adaptation to local European conditions. Such top crosses might thus combine the desirable traits of the American single cross and the European open-pollinated variety. Most top crosses, however, are temporary expedients, which usually are eventually replaced by double crosses. Top crosses are useful also for evaluating the perform- ance of inbred lines. They also provide a means of selecting promising open-pollinated varieties for use as source material for the develop- ment of inbred lines. MEASURING PERFORMANCE General information concerning the tests is given in Table 1. Field plot design. Semi-balanced lattice designs were used to ob- tain the data reported in Tables 3, 4, 7, 12, 13, and 14. The data in Tables 5, 8, 15, 16, 19, and 20 were obtained in randomized blocks. Table 1. GENERAL INFORMATION: Tests of Illinois Experimental Corn Hybrids, 1957 County* Section of state Table number Plants per hill Date of Planting Har- vesting DeKalb . . . Northern 2-5 6-8 9-10 11-12 13 14 15-16 17 18-19 20 4 4 4 4 4 4 4 3 3 4 May 7 May 30 June 5 June 2 May 8 May 8 May 8 June 26 June 26 May 2 Oct. 17 Oct. 29 Nov. 7 Nov. 4 Oct. 14 Oct. 11 Oct. 31 Nov. 16 Nov. 21 Oct. 18 Peoria North-Central Champaign Central Champaign Central Champaign Central Champaign . . . Central Champaign Central Fayette South-Central Fayette South-Central Union Southern a The fields are located near the following cities and towns: in DeKalb county near DeKalb, in Peoria county near Peoria, in Champaign county near Urbana, in Fayette county near Brownstown, and in Union county near Wolf Lake. 8 BULLETIN No. 623 [January, Rectangular and simple lattice designs were used for the data reported in Tables 2, 6, 9, 10, 11, 17, and 18. Because of time limitations, the data from the rectangular and simple lattice designs were analyzed by the procedure normally used for randomized block designs. Method of planting. All plots in these tests were planted, thinned, and harvested by hand in well-fertilized fields prepared in the usual way for corn. Individual plots were 2X5 hills in area. Six kernels were planted in hills spaced 40 inches apart. Hills were thinned to 4 plants at DeKalb, Peoria, Champaign, and Wolf Lake, and to 3 plants at Brownstown. Acre grain yields. Acre yields are reported as shelled grain contain- ing 15.5 percent moisture, the maximum allowable for No. 2 corn. Data from all plots are included in the report on yield. The only correction for imperfect stands was the following adjustment for missing hills: Ear weight in field X 1 + ( -pyp X .7 1 = adjusted ear weight This adjustment adds 0.7 percent of the average hill yield for each missing hill, and assumes that 0.3 percent is made up by the increased yield of surrounding hills. Shelling percentage and moisture in grain. All ears from one replication of each entry of the double crosses, three-way crosses, and inbred lines were shelled immediately after harvest. Two replications of the single crosses were shelled. The percentage of moisture in the shelled grain was determined with a Steinlite moisture meter. Stand. Counts of the number of missing hills and number of miss- ing plots were made in late summer in each plot. The data are reported as percentage of a perfect stand. Yields were corrected for missing hills. Ear height. Representative plants in each plot were measured to determine the distance in inches from the soil to the ear-bearing node. Erect plants. Percentage of erect plants in each plot of each entr} was determined by actual counts at the time of harvest. Stalks broken above the ear were not considered lodged. Stalks leaning less than 45 degrees were considered as erect. Smutted plants. The number of smutted plants was recorded on all plots in late summer. These data are reported in the tables as percent of smutted plants. 1958] EXPERIMENTAL CORN HYBRIDS 9 RESULTS OF THE TESTS Data obtained from the tests are summarized in Tables 2 to 21. Long-time averages are more reliable indexes of the performance of hybrids than a single year's result. The parts of the tables summarizing the results of two or three years therefore deserve the most weight when the results are studied. Relative performance cannot be determined with absolute accuracy by any method of testing. Small differences between entries are seldom of any significance. In fact, small differences are to be expected among plots planted even with the same lot of seed. Variations in growing con- ditions such as soil fertility are reduced but not completely eliminated by replicating the same entry several times in the same test. Unavoid- able variation may be determined by a mathematical procedure known as analysis of variance. From this procedure figures may be obtained that represent the range which differences between two entries must exceed before those entries can be considered significantly different. The method used to determine this range is called the "Multiple Range Test." 1 This method considers the number of entries that fall within the range as well as the variability of the test. Data shown in bold- face were not statistically different from the best performance for that characteristic. Double-cross hybrids that were high yielding and had excellent standability are indicated by heavy type in Table 22. The following single crosses, three-way crosses, top crosses, and inbred lines were outstanding in performance in 1957: Northern Illinois Table 3A W136A X (M14 X WF9), W20R X (M14 X WF9), R168 X (M14 X WF9), A257 X (M14 X WF9), MS111 X (M14X WF9). Table 3B - - MS109 X (WF9 X OhSIA), B47 X (WF9 X OhSIA). Table 4A M14 X B14, R113 X B14, R165 X B14, L12 X Oh43, B14 X Oh43, B14 X W64A. Table 5 R172, W64A, Oh43, R168. North-Central Illinois Table 7A Hy2 X B14, R109B X B14, R165 X B14, WF9 X B14, B14 X Oh28. Table 8 WF9, R168, B14, R172. 1 "Multiple Range and Multiple F Tests," bv D. B. Duncan in Biometrics 11 (1), 1-43. 1955. 10 BULLETIN No. 623 [January, Central Illinois Table 12A CI.31A X (Hy X WF9), Oh3F X (Hy X WF9), Oh4G X (Hy X WF9), Oh7N X (Hy X WF9), Oh7P X (Hy X WF9), R168 X (Hy X WF9). Table 12B B44 X (WF9 X 38-11), CI.31A X (WF9 X 38-11), Oh3F X (WF9 X 38-11), Oh4G X (WF9 X 38-11), R159 X (WF9 X 38-11), R168 X (WF9 X 38-11). Table 13 A Hy2 X R71, Hy2 X R74, Hy2 X R127, Hy2 X WF9, R74 X WF9, R129 X WF9, R74 X R129. Table 14A R71 X R109B, R74 X R109B, R74 X R112, R74 X R168, R109B X R112, R109B X R114, R112 X R115, R114 X R168, R115 X R168. Table 15 R71, R74, 38-11, WF9, R168. Table 16 R74, R71, R109B, R113, R114. South-Central Illinois Table ISA C103 X Hy2, C103 X R154, C103 X 38-11, Hy2 X 38-11. Table 19 R166, R168, C103. Southern Illinois Table 20A Mol979 X Mo. 804, Mo9108 X Mo. 804, Ks76-55 X Mo. 804, R159 X Mo. 804, R166 X Mo. 804, CI.90A X Mo. 804, NC220 X Mo. 804. Results of tests with high-oil hybrids are given in Table 11. Illinois High-Oil hybrids 6052, 6062, 6021, and 6016 were rather outstanding in performance. 1958] EXPERIMENTAL CORN HYBRIDS 11 Table 2. DOUBLE CROSSES OF ILLINOIS 1277 MATURITY Tested in Northern Illinois, 1955-1957 (Data in boldface were not statistically different from the best performance for that characteristic) Rank Acre Mois- ture in grain Shell- ing Erect plants Stand Ear height ears > M A Three-year averages, 1955-1957 bu. perct. perct. perct. perct. in. Perct. perct. 1 111. 1555 A. . . 115 21 79 88 97 45 3 2 AES 702 114 23 77 90 98 49 7 3 111. 1863 113 23 78 93 98 40 2 4 111. 1864 113 21 78 91 96 41 2 5 111. 1936 113 23 77 92 98 45 2 6 111. 1281. . 112 22 79 89 99 42 2 7 111. 1861 Ill 21 79 83 96 43 1 8 111. 1862 Ill 23 79 91 99 39 2 9 ISP 2 Ill 24 77 87 98 44 2 10 111. 1277 110 23 79 86 99 44 2 11 111. 1375. . 110 22 79 86 97 39 1 12 111. 1575 109 24 77 91 98 45 2 13 111. 1091A 108 23 77 81 93 46 2 14 111. 1279 108 22 79 93 96 43 2 15 111. 1559B 108 23 76 92 97 43 3 16 111. 1280 107 23 78 85 97 43 2 17 111. 1866 107 23 78 92 97 40 1 18 111. 1289 105 23 75 95 98 40 2 19 Ohio K24 105 21 79 89 94 39 2 20 111. 1557 104 24 77 95 95 42 3 21 111. 1560A... 104 23 78 97 97 44 3 22 AES 510 103 19 79 94 95 41 4 23 111. 1493 101 23 76 94 92 42 2 24 111. 2247W 101 24 77 89 97 46 2 25 AES 610 99 21 80 92 96 37 1 26 111. 101.. 97 22 78 85 91 42 3 27 111.21 90 24 77 82 84 48 2 Average. . . . 107 22 78 90 96 43 2 B Two-year averages, 1956-1957 i AES 702 .... 126 22 76 98 97 45 2 111. 1864 125 20 79 97 98 42 3 111. 1863 122 22 78 97 99 42 2 4 111. 1956 122 22 78 95 98 46 5 111. 1960 122 20 79 100 98 45 6 111. 1961 122 19 78 99 98 46 7 Iowa 4757 122 20 80 92 98 44 1 8 ISP 2 122 23 78 87 98 45 2 9 111. 1281 121 22 78 92 100 44 10 111. 1575 120 23 78 94 98 45 11 111. 1861 . . 120 20 80 90 96 44 3 12 111. 1862 120 23 78 99 100 40 2 13 111. 1936 120 22 78 96 98 46 14 111. 1952 120 20 78 97 98 44 1 15 111. 1957 120 20 78 99 98 44 2 16 111. 1958.. 120 19 80 96 95 46 17 Ind. 5409 120 20 79 94 98 41 1 18 111. 1277 119 23 79 94 99 44 1 19 111. 1555A 119 20 80 96 96 44 20 111. 1955 119 20 80 99 96 44 21 111. 1280. . 118 22 78 87 98 46 2 22 111. 1289 118 22 76 98 98 40 2 23 111. 1559B 118 22 76 98 96 43 24 111. 1953 118 20 78 98 98 40 2 25 111. 1962 118 20 78 98 98 46 1 (Table is continued on next page) 12 BULLETIN No. 623 [January, Table 2. Continued Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height ears 1 Smut B Two-year averages, 1956-1957 Concluded bu. perct. perct. perct. perct. in. perct. perct. 26 111. 1963 .. 118 20 78 98 98 42 27 111. 1091A 117 22 78 90 94 46 1 28 Iowa 4779 117 24 79 98 96 40 29 111. 1375 116 22 80 94 96 40 30 111. 1557 116 23 76 98 96 43 1 31 111. 1866. .. 116 22 78 94 98 41 2 32 Mich. 52-25 116 21 80 99 95 38 2 33 Minn. CB4621 116 18 80 98 98 42 1 34 111. 1959 115 20 79 96 98 42 1 35 AES 510 114 18 80 98 96 40 1 36 111. 1279.. 114 21 79 96 96 44 2 37 111. 1560A 114 22 78 100 96 45 1 38 111. 1493 113 22 77 95 91 42 2 39 Minn. CB4603 112 20 79 100 98 44 2 40 111. 1902 Ill 23 78 80 91 44 2 41 Mich. 53-151 . . Ill 20 78 96 95 44 4 4?. 111. 1954 110 20 80 96 94 43 2 43 Ohio K24 110 20 79 94 96 40 2 44 AES 610 108 20 80 98 97 38 1 45 111. 2247W 108 23 77 96 95 46 1 46 111. 101. . 105 21 78 86 88 44 1 2 47 111. 21 98 23 78 85 78 46 2 2 Average 117 21 78 95 96 43 1 C 1957 results (3 replications) i 111.3007 137 24 80 99 92 49 2 111.3009 132 22 78 99 98 44 3 3 111.3152 129 27 78 98 99 42 3 4 111. 3043 128 27 79 100 96 44 1 5 Ind. 6225 128 22 78 99 99 46 1 6 AES 702... 127 26 75 99 95 45 7 111. 1863 127 26 77 99 98 41 1 8 111. 1952 126 24 76 97 98 43 1 9 111. 3008 , 125 27 78 97 94 46 1 10 111.3046 125 23 76 98 93 50 1 11 111. 1864. . 124 23 77 99 96 40 1 12 111. 1281 123 26 77 97 99 43 13 111. 1961 123 22 76 99 98 47 14 111. 1999 123 31 76 98 98 41 15 111. 1956 122 27 75 91 98 47 1 16 111. 1957. . 122 24 76 100 97 45 3 17 111. 1862 121 27 76 100 100 38 2 18 111. 1953 121 23 76 98 98 41 3 19 111. 1955 121 23 78 100 93 44 20 111. 1960 121 25 78 99 98 45 21 111. 3045. . 121 25 79 99 93 42 22 111. 1277 120 28 77 93 98 43 2 23 111. 1575 120 29 77 92 96 43 24 111. 1936 120 26 75 97 97 44 25 111.3048 120 25 79 100 92 44 1 26 Ind. 5409 . . 120 25 77 96 96 41 1 27 ISP 2 120 28 76 84 98 44 3 28 111. 1091 A 119 26 77 95 95 45 1 29 111. 1963 119 24 76 98 95 41 30 Minn. CB4621 119 20 77 99 97 40 1 31 111. 1280. . 118 27 76 87 98 42 1 32 111. 1555A 118 23 77 96 93 45 1 33 111. 1958 118 23 78 98 91 47 34 111. 1959 118 25 77 99 98 43 2 35 111. 1279 117 25 77 96 97 45 3 36 111. 1375.. 117 26 77 94 94 41 37 111. 1962 117 24 77 98 97 47 2 (Table is concluded on next page) 1958} EXPERIMENTAL CORN HYBRIDS Table 2. Concluded 13 Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Dropped 1 Smut C 1957 results (3 replications) Concluded bu. perct. Perct. Perct. perct. in. perct. perct. 38 111. 1968.. 117 26 76 98 85 50 39 111. 1971 117 27 77 95 88 48 40 111. 1998 117 26 74 93 95 46 1 41 111. 3044 117 25 75 99 98 45 42 Iowa 4757 117 24 77 95 97 43 1 43 111. 1559B 116 26 74 99 94 43 44 111. 1970 116 28 77 91 88 47 45 111.3047 116 25 77 98 88 43 46 AES510... 115 21 77 99 92 41 1 47 111. 1289 115 27 74 97 98 40 1 48 111. 1861 115 24 78 88 91 44 4 49 Mich. 52-25 115 25 79 99 94 40 3 50 111. 1560A 114 27 77 100 94 45 51 Iowa 4779 114 28 77 97 94 40 1 52 Minn. CB4603 114 23 77 100 95 43 4 53 111. 1966 113 28 73 94 92 49 1 54 111. 1866 Ill 26 76 94 97 39 2 55 111.3006 Ill 24 77 98 95 41 2 56 111. 1557. . 110 27 74 99 92 43 2 57 111.3016 110 30 74 95 93 44 2 58 111.3057 108 27 77 97 97 45 59 111. 3005 107 25 74 97 93 42 2 60 Mich. 53-151 107 24 77 95 91 43 6 61 111. 1493 106 26 74 94 83 42 4 62 Ohio K24 106 24 76 96 92 38 4 63 AES610 105 24 78 99 96 38 1 64 111. 1954 105 23 78 97 89 43 3 65 Mich. 54-70 105 26 78 99 88 39 1 66 111. 1969. . 104 30 77 100 82 46 67 Mich. 54-116 103 24 79 98 99 39 5 68 111. 1902 101 27 76 73 83 44 3 69 111. 2247W 98 28 74 100 92 45 1 70 111. 101 91 25 76 86 79 44 4 71 Ohio M15 85 24 76 95 76 46 1 72 111. 21 77 28 76 94 58 47 2 Average 116 25 77 96 93 44 1 14 BULLETIN No. 623 [January, Table 3. THREE-WAY, SINGLE, AND DOUBLE CROSSES OF ILLINOIS 1277 MATURITY Tested in Northern Illinois, 1957 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Smut A Inbred lines crossed with (M14 X WF9) i 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 20 Oh26D . bu. 102 Perct. 23 27 26 25 31 26 29 26 22 24 25 28 26 29 25 27 29 24 29 26 perct. 76 77 74 74 72 77 72 73 79 78 75 75 78 69 73 76 72 77 74 75 perct. 99 97 98 97 94 97 97 100 96 98 91 98 98 92 98 99 73 85 97 95 perct. 95 94 89 90 81 84 90 98 82 89 89 94 92 79 88 84 87 88 84 88 in. 34 36 36 38 35 38 37 35 33 36 35 38 34 33 36 37 38 40 36 36 perct. 1 8 2 2 1 2 1 1 2 8 3 1 1 3 2 W136A 107 W202 107 W20R 108 R165 86 R168 107 R172 100 A257.. . . . 109 A296 82 A568 104 A569 93 MS109 106 MSI 11 119 MS121 84 MS125 99 MS126 104 Iowa (Minn.Syn.l) 105 B47 110 Iowa (Minn.Syn.2) . . . . . 97 Average 102 B Inbred lines crossed with (WF9 X Oh51A> 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Oh26D . . 79 24 22 25 29 29 24 29 27 22 24 23 28 29 27 27 29 30 26 24 31 26 70 79 77 73 73 77 75 74 83 77 76 77 76 70 75 77 69 74 78 74 75 96 92 99 96 95 99 98 99 93 97 97 99 98 96 97 96 94 92 95 100 96 89 91 83 90 85 83 86 89 89 92 87 97 83 88 85 80 89 92 91 90 88 36 35 38 37 34 39 40 35 37 36 36 37 35 33 36 38 39 38 39 35 37 1 1 6 4 2 2 1 4 1 1 1 3 1 1 1 1 2 A 6 2 W136A 97 W202 105 W20R 102 R165 . . . 95 R168. . . 100 R172. 88 A257 ... 99 A296 105 A568 . 100 A569 . . 103 MS109 113 MSI 11 87 MS121 91 MS125 86 MS126 96 98 Iowa [(M14XA206)XOh4C] B47 107 110 91 Average 98 C Single crosses 41 42 M14XWF9 99 26 26 26 73 77 75 99 98 98 88 76 82 33 36 34 2 1 WF9XOh51A 92 Average 96 D Double crosses 18 43 44 45 49 48 47 46 111. 3159 120 27 28 30 29 27 29 28 28 28 76 77 75 74 73 71 67 67 72 98 93 98 97 99 97 100 95 97 95 93 93 87 97 92 93 94 93 39 42 35 41 37 43 42 39 40 2 2 2 2 2 1 2 2 111. 1277. 120 111. 1559B 112 111. 1969 107 AES 610 104 111. 3059. . 99 111. 3058 96 111.3057 95 Average . . . . 107 1958} EXPERIMENTAL CORN HYBRIDS 15 Table 4. SINGLE AND DOUBLE CROSSES OF ILLINOIS 1277 MATURITY Tested in Northern Illinois, 1957 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Smut A Single crosses bu. perct. perct. perct. perct. in. perct. i M14XR113 108 28 78 98 94 33 2 M14XR165 91 29 80 56 81 38 a M14XR168 114 24 77 93 94 37 4 M14XR172 114 25 77 100 96 39 5 M14XWF9 106 27 76 97 90 34 6 M14XL12 107 25 77 99 98 44 7 M14XB14 130 24 80 99 91 34 8 M14XOh43 112 26 77 100 95 29 9 M14XW64A 101 26 77 100 95 33 7 12 R113XR165 110 29 74 77 91 42 13 R113XR168.. 104 25 74 99 93 42 1 14 R113XR172 100 28 64 100 99 43 1 IS R113XWF9 104 26 73 100 81 39 16 R113XL12 108 29 74 100 93 48 1 17 R113XB14 119 24 76 100 92 45 1 18 R113XOh43 118 32 74 99 96 38 19 R113XW64A 98 26 71 99 95 38 1 23 R165XR168 , 101 26 75 88 85 43 24 R165XR172 107 30 75 94 97 44 1 25 R165XWF9 121 28 78 88 93 40 26 R165XL12 88 36 69 30 98 50 3 27 R165XB14 119 26 77 92 94 40 28 R165XOh43 116 34 78 96 93 36 29 R165XW64A 103 30 75 74 93 36 1 34 R168XR172 73 27 72 98 99 40 35 R168XWF9 108 24 78 99 84 41 1 36 R168XL12 113 29 77 98 97 50 1 37 R168XB14 105 24 78 99 90 44 38 R168XOh43 104 28 75 98 98 39 39 R168XVV64A 98 23 72 99 95 38 2 45 R172XWF9... 112 29 76 99 92 40 1 46 R172XL12... 99 30 70 100 93 45 47 R172XB14 117 28 77 100 99 45 48 R172XOh43 Ill 34 77 100 93 38 49 R172XW64A 106 27 79 100 94 38 56 WF9XL12... 89 34 69 97 92 47 1 57 WF9XB14 113 25 78 100 83 42 58 WF9XOh43 110 32 77 100 92 35 1 59 WF9XW64A 65 30 68 91 92 31 2 67 L12XB14 108 30 79 99 85 54 68 Ll2XOh43... 120 35 78 100 97 45 69 L12XW64A 112 29 75 94 96 44 3 78 B14XOh43 134 31 77 100 97 37 79 B14XW64A 123 22 79 100 97 39 1 89 Oh43XW64A 117 26 77 100 95 30 1 Average 107 28 75 94 93 40 1 B Double crosses 91 111. 1277. . 121 28 78 96 95 41 1 93 111. 1863 113 33 76 99 94 35 1 90 AES610 108 26 74 98 97 34 3 92 111. 1555A 107 23 79 94 84 42 1 Average 112 28 77 97 92 38 2 16 BULLETIN No. 623 [January, Table 5. INBRED LINES OF ILLINOIS 1277 MATURITY Tested in Northern Illinois, 1957 (Data in boldface were not statistically different from the best performance for that characteristic) Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Smut 1 2 3 4 5 6 7 8 9 10 R165 bu. 48 perct. 36 29 23 27 34 21 25 25 34 40 29 perct. 66 78 67 78 64 62 74 49 48 56 64 perct. 55 100 96 100 89 98 94 100 99 97 93 perct. 94 93 86 68 84 93 75 77 91 66 83 in. 31 33 23 24 29 36 24 27 34 36 30 perct. 1 1 2 3 1 2 1 1 R172 47 W64A 44 Oh43 41 WF9 38 R168 35 M14 33 R113 27 B14 24 L12 20 36 1958} EXPERIMENTAL CORN HYBRIDS 17 Table 6. DOUBLE CROSSES OF ILLINOIS 21 MATURITY Tested in North-Central Illinois, 1955-1957 (Data in boldface were not statistically different from the best performance for that characteristic) Rank A Mois- in Entry , ]d ture in yield yle1 ' grain Shell- ing Erect plants Stand Ear height Dropped ears Smut A Three-year averages, 1955-1957 bu. perct. perct. perct. perct. in. perct. perct. 1 111.274-1 105 20 81 84 96 44 2 111. 972A-1 105 21 79 85 97 44 1 3 AES 806 103 23 79 87 95 39 4 4 111. 1332 103 20 81 86 98 43 2 5 111. 1912 103 21 80 82 94 43 3 6 111. 1280 102 19 81 85 96 40 4 7 111. 1919 101 21 80 84 95 43 2 8 AES 805 100 22 78 88 95 41 2 9 111. 1760 100 22 79 83 96 39 3 10 111. 1916 100 20 80 82 93 44 3 11 111. 1511. . 99 21 80 86 96 44 2 12 111. 1570 99 21 78 82 96 44 2 13 111. 1875 99 22 78 89 91 45 6 14 111. 1575 98 21 80 85 97 38 5 15 111. 1831 98 22 80 90 95 37 1 16 111. 1913. . 98 20 81 82 93 43 5 17 111. 1917 98 21 80 76 91 44 2 18 111. 1868 95 22 79 95 93 39 2 19 111. 1819 94 19 80 84 89 39 1 20 111. 1863 94 20 81 95 94 34 1 21 AES 702 ... 93 20 79 88 91 41 2 22 111. 1277 93 20 82 87 95 39 1 23 111. 21 92 21 81 86 95 41 1 24 111. 1555A 92 17 80 89 95 38 2 25 Iowa 4297 92 20 79 87 98 39 1 26 111. 1560A. . . 91 18 82 91 96 38 1 27 111. 1814 90 22 79 94 91 37 1 28 111. 1873 90 20 78 92 94 37 2 29 111. 2247W 86 21 77 86 95 40 3 Average. 97 21 80 87 94 41 2 B Two-year averages, 1956-1957 1 AES 805 ... 125 20 81 84 96 46 1 2 2 111. 972A-1 125 18 81 82 97 49 1 2 3 111. 1971 124 18 84 83 99 46 2 4 111. 274-1 122 18 82 78 95 48 1 5 111. 1912 122 20 81 75 93 48 4 4 6 111. 1970. . 122 18 84 79 98 46 7 AES 806 120 21 80 85 93 43 4 1 8 111. 1280 119 17 82 78 96 45 6 3 9 111. 1332 119 18 82 84 98 48 2 1 10 111. 1511 119 18 82 80 96 49 3 11 111. 1575. . 119 18 82 82 97 42 6 2 12 111. 1760 119 19 81 76 95 44 3 7 13 111. 1570 118 19 80 76 96 48 3 3 14 111. 1919 118 20 81 78 93 48 2 4 15 111. 1921 118 21 80 93 92 46 1 1 16 111. 1928. . 118 22 80 88 94 50 2 4 17 111. 1968 118 18 82 83 92 48 1 18 111. 1972 118 18 83 82 97 46 3 19 111. 1973 118 19 82 76 97 46 1 2 20 Nebr. 1924 117 18 82 90 97 45 2 2 21 111. 1831. . 116 20 82 88 94 41 1 3 22 111. 1875 116 20 80 86 90 50 8 2 23 111. 1966 116 19 82 86 92 44 1 24 111. 1969 116 18 82 94 94 45 2 25 111. 1277 114 18 84 84 95 42 2 (Table is continued on next page) 18 BULLETIN No. 623 [January, Table 6. Continued Rank A in Entry "v^j yield Mois- shell ture in : grain Erect plants Stand Ear height Droppec >s, B Two-year averages, 1956-1957 Concluded bu. perct perct. perct. perct. in. perct. perct. 26 111. 1916 114 18 81 75 92 50 4 3 27 Iowa 4809 114 18 80 95 94 43 1 1 28 111. 1913 113 18 82 75 92 48 6 29 111. 1922 113 22 80 88 92 46 1 30 111. 1819 112 18 82 78 86 44 1 31 111. 1868. . 112 20 81 94 94 42 1 1 32 111. 1926 112 19 80 82 94 46 5 33 111. 1930 112 24 80 88 88 48 2 2 34 AES 702 Ill 18 80 84 88 44 35 111.21 Ill 18 83 81 93 45 2 36 111. 1917 111 20 81 68 92 50 3 4 37 Iowa 4297 110 18 82 84 99 44 2 38 Iowa 4879 110 18 80 96 90 42 2 1 39 111. 1863 109 18 82 94 94 38 1 2 40 111. 1560A 108 17 84 88 96 42 1 2 41 111. 1967 108 18 80 92 93 48 2 4 47. 111. 1873 107 18 80 90 92 42 2 43 111. 1927 107 20 78 89 90 45 3 44 111. 1902 106 17 82 71 92 44 3 45 111. 1555A 104 15 80 86 92 42 2 2 46 111. 1814.. 104 20 82 92 90 40 1 1 47 111. 1936 104 18 81 91 91 42 1 1 48 111. 2247 W 98 19 78 83 94 44 2 1 49 CB4726A 92 18 82 92 94 38 1 2 Average 114 19 81 84 94 45 2 2 C 1957 results (3 replications) 1 111.3026 127 23 79 85 96 36 2 111.3027 127 22 80 74 98 40 3 111.3040 127 20 79 59 97 46 1 4 111. 3042 127 23 77 92 87 44 5 111. 3033 126 19 79 74 98 38 3 6 111. 3023 A... 125 20 81 87 96 35 2 7 111. 3035 125 22 82 85 94 38 8 111.3037 125 21 80 72 92 43 2 9 111. 1970 123 21 83 63 98 43 10 111.3010 123 22 78 82 98 44 2 11 Iowa 4880 122 21 79 90 91 39 1 12 AES 805 121 23 78 79 93 43 2 13 111. 1332 121 21 79 76 99 43 1 14 111. 1971 121 22 82 71 98 43 1 15 111. 3032 121 20 78 89 95 39 2 16 111. 274-1 120 21 80 67 91 47 17 111. 972A-1 120 23 78 72 95 47 18 111.3019 120 21 80 88 95 42 1 19 111.3014 119 24 78 76 94 46 1 20 111. 3022 119 21 81 83 87 40 5 21 111. 3039 118 23 78 88 92 42 2 22 111. 1280 117 20 80 71 97 39 1 23 111. 1928 117 26 76 86 89 50 1 24 111.3020 117 21 79 87 99 38 25 111. 3029 117 21 77 88 88 38 26 111. 1511 116 21 79 74 93 45 27 111. 3021 116 24 78 93 93 40 o 28 111.21 115 23 80 79 88 44 1 29 111. 3012 115 23 79 75 91 42 3 30 111.3017 115 23 79 91 95 39 3 31 111.3160. . 115 22 80 92 94 40 I 32 111. 1575 114 20 80 71 94 38 1 33 111. 1760 114 22 79 69 92 39 4 34 111. 1973 114 23 79 64 95 45 3 35 111. 3043 114 20 81 92 93 41 36 111. 3030 . . 113 24 78 95 96 39 37 111.3034 113 22 80 82 91 36 1 (Table is concluded on next page) 1958] EXPERIMENTAL CORN HYBRIDS 19 Table 6. Concluded Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height "SB- _ C 1957 results (3 replications) Concluded bu. perct. perct. perct. perct. in. perct. Perct. 38 111. 3169C... 113 22 74 78 93 36 3 39 111. 1570 112 23 77 67 93 46 4 40 111.3013 112 25 77 68 95 46 41 111.3036. . 112 21 80 82 92 34 1 42 Nebr. 1924 112 21 80 83 94 44 2 43 AES806 Ill 24 78 76 87 38 1 44 111. 1912 Ill 25 78 67 89 46 2 45 111. 1966 Ill 22 80 77 87 40 1 46 111. 1968.. 111 20 80 76 88 45 1 47 111. 1972 Ill 22 81 74 96 43 3 48 111.3018 Ill 22 80 90 94 40 3 49 111.3025 Ill 24 80 89 95 40 50 111.3038 Ill 20 80 91 89 38 1 51 111. 3041 Ill 19 81 72 93 38 3 52 Iowa 4809 Ill 22 78 95 92 41 1 53 111. 1969 110 22 79 93 91 43 3 54 111.3045 110 20 81 96 89 40 55 111. 3047 110 20 78 85 93 41 56 111. 3015A 109 22 76 86 100 41 57 111.3016 109 22 79 95 94 37 2 58 111.3024 109 22 77 96 94 40 3 59 CB4726A 109 21 80 87 94 35 60 111. 1831 108 23 79 80 89 37 2 61 111. 1921 108 26 77 92 84 45 1 62 111. 1916 107 23 78 71 86 47 2 63 111. 1926 107 24 77 73 93 43 64 111. 1277 106 22 81 80 92 40 1 65 111. 1930 106 30 78 86 82 46 1 66 111.3011. . 106 24 78 91 98 41 67 111. 3044 106 22 78 89 96 40 68 AES 702 104 21 77 71 83 40 69 111. 1560A 104 20 83 81 94 39 2 70 111. 1868 104 24 78 93 88 40 71 111. 1875 104 24 76 81 81 49 72 Iowa 4879 104 22 78 96 82 38 1 73 111. 1913 103 21 79 65 86 45 74 111. 1967 103 23 77 88 89 46 4 75 111. 1863 102 21 80 94 90 32 3 76 111. 1922. . 102 27 76 84 87 43 77 111.3124 102 21 79 91 88 42 1 78 111. 1919 101 24 78 66 91 46 5 79 111. 3048 101 20 80 92 80 43 80 111. 1902 100 20 79 65 87 41 3 81 111. 1917 100 24 77 59 86 49 1 82 Iowa 4297 98 22 80 75 98 41 3 83 111. 1927 93 24 76 84 81 43 84 111. 1819 92 22 78 62 72 41 85 111. 1873 91 23 77 82 86 39 86 111.3046.. 91 20 75 92 83 41 87 111. 1814 90 24 78 87 81 36 1 88 111. 1936 90 22 78 89 82 37 89 111. 1555A 88 18 73 75 86 39 1 90 111. 2247W 83 23 72 80 89 39 Average Ill 22 79 81 91 41 1 20 BULLETIN No. 623 [January, Table 7. SINGLE AND DOUBLE CROSSES OF ILLINOIS 21 MATURITY Tested in North-Central Illinois, 1957 (Data in boldface were not statistically different from the best performance for that characteristic) Code Entry Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Smut A Single crosses bu. perct. perct. perct. perct. in. perct. i Hy2XR109B 109 25 78 67 100 47 1 2 Hy2XR113 110 21 79 65 89 47 3 Hy2XR165 120 21 82 79 90 42 4 Hy2XR166 93 21 79 66 87 39 5 Hy2XR168 106 19 81 96 91 42 6 Hy2XR172 88 21 80 88 77 40 7 Hy2XWF9 114 22 81 85 90 40 8 Hy2XB14 118 22 82 87 87 43 1 9 Hy2XOh28 112 19 81 67 86 41 12 R109BXR113 101 22 78 82 89 37 13 R109BXR165 108 24 79 78 85 36 1 14 R109BXR166 98 24 80 92 94 34 1 15 R109BXR168 99 22 82 96 89 39 1 16 R109BXR172 90 23 75 81 95 38 1 17 R109BXWF9 109 23 77 96 84 34 18 R109BXB14 130 22 80 92 94 41 19 R109BXOh28 91 21 80 87 87 33 1 23 R113XR165 106 20 75 46 92 37 24 R113XR166 79 21 78 47 85 36 1 25 R113XR168 94 20 78 86 85 39 26 R113XR172 92 18 75 86 93 38 27 R113XWF9 93 19 79 83 78 32 28 R113XB14 115 19 81 93 93 40 1 29 R113XOH28 79 20 78 89 79 31 34 R165XR166 98 22 83 42 93 32 35 R165XR168 107 21 80 87 93 38 1 36 R165XR172 86 20 78 90 79 37 37 R165XWF9 116 20 81 72 93 34 38 R165XB14 117 21 81 85 90 38 1 39 R165XOK28 97 22 80 65 79 33 1 45 R166XR168 82 20 72 78 90 34 2 46 R166XR172 82 20 81 63 88 36 1 47 R166XWF9 99 20 83 64 89 32 1 48 R166XB14 114 19 82 81 100 38 49 R166XOH28 82 20 82 42 80 32 3 56 R168XR172 59 22 77 88 84 34 57 R168XWF9 108 21 80 96 94 37 58 R168XB14 Ill 18 82 95 88 40 1 59 R168XOh28 94 18 83 88 84 35 1 67 R172XWF9 109 21 80 95 88 36 68 R172XB14... 97 18 80 97 84 39 69 R172XOh28 86 18 75 77 88 38 3 78 WF9XB14 118 20 79 98 88 37 79 WF9XOH28 104 19 80 85 87 34 1 89 B14XOh28 120 21 80 92 82 35 1 Average 101 21 79 80 88 37 1 B Double crosses 90 AES 702 117 22 85 87 84 39 92 111. 1575 108 20 79 85 85 38 1 93 111. 1936 103 21 75 86 88 34 1 91 111. 21 97 22 78 70 87 41 1 Average 106 21 79 82 86 38 1 1958] EXPERIMENTAL CORN HYBRIDS Table 8. INBRED LINES OF ILLINOIS 21 MATURITY Tested in North-Central Illinois, 1957 (Data in boldface were not statistically different from the best performance for that characteristic) 21 Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect plants Stand Ear height Smut 1 2 3 4 5 6 7 8 9 10 WF9 bu. 49 perct. 19 20 17 21 24 25 18 28 19 25 22 perct. 73 76 69 68 75 58 67 69 68 53 68 perct. 85 93 67 100 92 40 95 78 100 78 83 perct. 87 79 79 84 84 86 80 76 70 86 81 in. 24 30 29 28 28 29 26 31 30 26 28 perct. 7 6 10 1 41 6 R168 43 Oh28 41 B14 40 R172 38 R165 . 38 R113 35 R109B 31 Hy2 31 R166 17 Average 36 Table 9. DOUBLE CROSSES OF ILLINOIS 1570 MATURITY Tested in Central Illinois (Field A), 1955-1957 (Data in boldface were not statistically different from the best performance for that characteristic) Rank in Entry yield Acre yield Mois- ture in grain Shell- ing Erect Stanf , Ear plants " J height Dropped Smut Half- silk A Three-year averages, 1955-1957 bu. perct. perct. perct. perct. in. perct. perct. days i 111. 1909. . 117 18 85 65 98 49 6 2 111. 1913 116 17 85 64 97 47 3 3 111. 1919 116 18 82 66 96 47 1 4 AES 806 114 21 82 70 98 44 5 5 111. 1916 114 18 84 70 98 48 4 6 111. 274-1 . . . 113 18 84 71 93 49 2 7 111. 972A-1 113 18 82 78 99 48 5 8 111. 1332 113 18 83 76 95 46 6 9 111. 1421 113 18 82 69 95 47 2 10 111. 1511 112 19 83 72 98 49 8 11 111. 1813. . 112 19 82 79 97 46 8 12 111. 1880 112 17 83 72 97 45 4 13 111. 1889 112 18 80 77 99 46 3 14 111. 1890 112 17 84 79 96 44 7 15 111. 1918 112 18 83 68 97 47 4 16 AES 805 111 18 83 80 97 47 5 17 111. 1912 109 19 84 59 95 47 4 18 U.S. 13 106 18 82 67 94 52 9 19 111. 1570 105 19 82 64 99 49 7 20 AES 808 104 17 84 69 97 43 3 21 111. 1767. . 104 18 80 74 95 45 5 22 111. 1777 103 18 82 69 97 45 3 23 111. 21 99 17 83 69 96 44 4 Average. . . . Ill 18 83 71 97 47 5 B Two-year averages, 1956-1957 i Ind. 5655 131 18 84 92 98 44 1 3 67 2 111. 1975 128 21 80 72 97 56 1 3 70 3 111. 1913 127 18 85 82 97 48 1 2 65 4 111. 1890 126 18 84 89 98 43 3 I 65 5 111. 1893 126 18 80 90 93 50 2 4 70 6 111. 1909. . 126 18 84 80 99 48 4 2 65 7 AES 805 124 19 82 90 96 46 2 2 66 8 AES 806 124 22 82 89 98 44 2 4 66 9 111. 1332 124 18 82 87 96 46 4 66 10 111. 1511 124 20 82 88 98 49 5 4 66 11 111. 1656. . 124 18 83 84 100 48 2 2 66 12 111. 1916 124 18 84 88 99 48 2 7 66 13 111. 1919 124 18 82 81 96 46 3 66 (Table is continued on next page) 22 BULLETIN No. 623 Table 9. Continued Rank in Entry yield Acre Mois - ^