OF THE UNIVERSITY Of ILLINIS 630.7 X16L 00. AGRICL/LTt/wr NON CIRCULATING CHECK FOR UNBOUND CIRCULATING COPY GRAIN SORGHUMS 1958 Performance in Illinois By C. N. Hittle G. E. McKibben D. R. Browning Bulletin 643 UNIVERSITY OF ILLINOIS AGRICULTURAL EXPERIMENT STATION BULLETIN No. 643 [April, EXTENSIVE TESTING OF GRAIN SORGHUM hybrids and varieties was started in Illinois in 1956 as a result of increased interest in sorghums among Illinois growers. This bulletin reports the results of the 1958 tests. Results of the 1956 and 1957 trials were reported in mimeographs AG1738 and AG1785 of the Department of Agronomy. The 1958 tests were carried on at seven widely separated locations in the state (Table 1). Twenty-eight sorghum hybrids and nine sor- ghum varieties were tested. In each field three corn hybrids adapted to the area were grown for comparison. The seed for the tests was sup- plied by both agricultural experiment stations and commercial seed producers (Table 2). The tests were supported in part by an entry fee for each commercial entry. Location of 1958 test fields. The east-central test was actually nearer Champaign than Urbana. This bulletin was prepared by C. N. Hittle, Associate Professor of Agron- omy; G. E. McKibben, Associate Professor of Agricultural Research and Extension; and D. R. Browning, Research Associate in Agronomy. Thanks are due W. C. Jacob and R. D. Seif for processing the data and to O. W. Pile for his help in planting, harvesting, and threshing. Thanks are also due H. J. Schultz and Robert Schultz, Champaign, Julius Frye, Havana, and George Brokaw, Biggsville, for their assistance in the tests. For general information about grain sorghums for Illinois farmers, see Circular 774, "Grain Sorghums in Illinois." 7959] GRAIN SORGHUM PERFORMANCE TESTS T3 (U T3 CO ? 4) -g - T? c *> cd CO o o Q Q o to 3 >i i-. to A O >J3 i2 ,_ cu o T) >. g J3 J3 _- $> rtrt % Q s*s CJ u c^ CO ^ bo C > "OT to bfl 4* ^0 4* bo O J3 cd 4) o 3 VI *-> ^ OT C > ^ w C OT " a 2 c O ^ j* ^ > -2 ? ^ ? \ Nff^ a] - *J 1 *"N U IO CN es2 CN^ ~s III II o CN o 6 CN C JJJ3 00 Sa '"b U iO u > '"b ^lo ^"Oi Tj* CS ^ CN *CN CN CN ! cs CN '-' CN *^ o? 1 1 c c ^. o c o ioil productic potential Very high Very low SO X Moderatel: low o >-) M J3 U Moderate!] low ^ j c HH E cd e ! i 1 g cd 13 s *-> 3 Il i i bo bt CO bo U o 1 1 cd El U G 3 Q cd cd H o II 4) o.i KO oopera 1 u * .2 o 3 E" cd X c 5 H ^c u C C U x _o 2 "o 5_M o en rt fe 2 'S "3'cO _c a 4) 0) tn 'c |3 B 1 Schultz and Robert Sci les southwest of Cham 8 1 CN g 2 . cd 1 E" U cd cd^ sl 4) .., M O >erative Agronomy Res t Carbondale b c V I H Q, C/3 C hern Illinois Experime mstown Experiment F inches apart. is University and Univ 35 1? Jl as 1 O o n <* o pg ? c OJ3 g a o a| c 3 O O 'cd a 1 O c o cd Renders- Jackson S o a, DeKalb Fayette J> BULLETIN No. 643 Table 2. Entries for 1958 Performance Tests [April, Hybrid or variety Entered by Sorghum varieties Combine 7078, Combine Kafir 60. Hegari, Martin, Midland, Plainsman, Redbine 60, Reliance, Westland Sorghum hybrids RS 590, Texas 601, RS 610, Texas 611, Texas 620, RS 630. Texas 640, Texas 645. RS 650, Texas 660 RS608 RS501 AMAK R-10, AMAK R-12 DeKalb C44a, DeKalb D50a, DeKalb E56a, DeKalb Exp. 1, DeKalb Exp. 2 NK 135, NK 140, NK 220, NK 230, NK3000 P.A.G. 425-S, P.A.G. 435-S. P.A.G. 515-S. P.A.G. 605-S Corn hybrids U.S. 13, AES 702, AES 805, 111. 1332. 111. 1851 Illinois Agricultural Experiment Station Illinois Agricultural Experiment Station (seed furnished by Texas Agricultural Experiment Station Substation No. 12) Illinois Agricultural Experiment Station (seed furnished by Nebraska and Texas Agricultural Experiment Stations) Illinois Agricultural Experiment Station (seed furnished by Nebraska Agricultural Experiment Station) AMAK, Inc. sponsored by Asgrow Texas Company, Advance Seed and Grain Company, and J. R. McNeill DeKalb Agricultural Association, Inc. Northrup, King and Company Pfister Associated , Growers, Inc. Illinois Agricultural Experiment Station Data for only five of the fields are reported here. One field was not harvested for yield because many varieties did not mature, and another because of poor stand. Growing Conditions An abundance of moisture during the 1958 growing season (Table 3) provided generally favorable conditions for corn but not always for the sorghums. The stand at the Brownstown field in Fayette county was poor as a result of excessive moisture soon after planting, which apparently caused seed and seedling rot. This field was not harvested for yield. Temperatures below normal and excessive moisture at Champaign apparently reduced emergence and caused slow estab- lishment of entries. At DeKalb in northern Illinois, moisture was limited at the time of planting, emergence was slow, and the sorghums were slow in becom- ing established. Many of the entries had not reached maturity by the time of the first frost, on October 1, and so the field was not harvested for yield. The cool temperatures and reduced sunlight which prevailed during much of June, July, and August in 1958 undoubtedly delayed blooming at some locations. At Champaign the average number of days to reach mid-bloom was 84 in 1958 compared with 61 in 1957. At Carbon- 1959} GRAIN SORGHUM PERFORMANCE TESTS Table 3. 1958 Rainfall Data From Weather Stations Near or at Locations of Trials Weather Precipitation County station location May June July Aug. Sept. Oct. Six- month total in. in. in. in. in. in. in. Champaign Urbana 4.29 7.50 7. 17 3 .27 2 .84 .42 25.49 Mason Havana 1.00 5.68 8 02 1 .89 I .91 1.59 20.09 Henderson Gladstone Dam 3.98 7.34 6 02 3 .26 3 .02 1.15 24.77 Jackson Agronomy Research 4.34 4.94 10. 79 5 .09 2 .40 1.89 29.45 Center, Carbondale Pope Dixon Springs 3.55 4.76 14 25 3 .21 2 .73 1.14 29.64 Experiment Station DeKalb Northern Illinois 2.74 6.38 5 69 3 .81 1 .26 2.39 22.27 Experiment Field Fayette Brownstown Experi- 3.25 3.45 10 ,29 1 .57 3 .22 1.86 23.64 ment Field dale in Jackson county, days to mid-bloom stage averaged 72 in 1958 and 62 in 1957. Planting and Harvesting The experimental design used was a 6 X 7 rectangular lattice with three replications, except at DeKalb where a randomized block design with three replications was used. All trials were planted with a hand seeder in 40-inch rows at the calibrated rate of 8 seeds per foot. Stands were not thinned. Only those portions of the rows with adequate and uniform stands were harvested for yield data. Sorghum heads were harvested by hand. Heads from each plot were dried artificially to approximately 10 to 12 percent moisture, threshed by a Vogel nursery thresher, and cleaned by a fan. Results Data for 1958 and for summaries for 1956, 1957, and 1958 are presented in Tables 4 through 8. Three-year averages are, of course, more reliable than results for only one year. The fact that an entry does not appear in the summary, however, does not mean it is inferior; its absence merely indicates that it was not tested for all three seasons. Yields. All yields, including corn yields, were adjusted to 13 per- cent moisture and 56 pounds per bushel. Average yields for sorghum hybrids in 1958 were about 40 percent above those for the varieties. In most trials, the hybrid sorghums did not yield as well as corn. It is not expected that existing sorghum 6 BULLETIN No. 643 [April, hybrids will yield better than corn under conditions favorable for corn. The sorghums are more likely to be grown on drouthy soils, such as the sands and claypans, where reduced corn yields can be expected, espe- cially in a dry year. In Mason county on Dune sand, the sorghums had an advantage and yielded better than the corn. Sorghums are also likely to be grown when late plantings are necessary. Maturity. A good measure of relative maturity of the different entries is the number of days to bloom, considered to be when 50 per- cent of the head has flowered. In 1958 there was a difference of 12 and 13 days between the time of flowering of the earliest and latest varieties in Champaign and Jackson counties respectively. In years when blooming is not delayed as it was in 1958, the difference approximates 17 days. In northern Illinois, only the earliest-maturing varieties and hybrids can be expected to reach maturity before frost. In central and southern Illinois, medium- and late-maturing varieties should be grown because of their greater yield. Test weight. The test weight, or weight per bushel, is one of the quality factors used in determining the grade that is assigned in com- mercial marketing of grain. Entries in these trials did not differ greatly in this characteristic. Head exsertion. Head exsertion is the distance from the top leaf (flag leaf) to the base of the head. Sorghums with good head exser- tion are more easily combined because less plant material passes through the combine. The range among entries for head exsertion is usually about 6 inches; in the Illinois trials, most hybrids exceeded the varieties in this characteristic. Lodging. Plants were considered lodged when they inclined more than 45 degrees. In the 1958 trials, there was little lodging and no important difference among entries, so the data are not reported here. Height. Height is measured from the ground level to the top of the plant. Shorter varieties and hybrids are easier to combine. In the 1958 trials, in Champaign county, entries ranged from 46 to 72 inches in height; in Jackson, from 47 to 75; in Pope, from 47 to 76; and in Mason county, on Dune sand where moisture is more limited, the range was from 32 to 55 inches. 1959] GRAIN SORGHUM PERFORMANCE TESTS 7 Silage. Grain sorghums can be made into silage but can be expected to yield less than forage sorghums. For the past three years at Dixon Springs, grain sorghums averaged 9.7 tons of silage an acre, while forage sorghums averaged 14.1 tons and corn 12.6 tons. In 1958 all silage yields at Dixon Springs were lower than for the two previous years. Interpreting Yield Differences in the Tables Entries are ranked in the order of yield, but it should be remem- bered that small differences do not necessarily indicate that one hybrid or variety is inherently superior to another. To find whether a variety is significantly different from another in yield, it is necessary to ex- amine the column immediately to the right of the yield, which indicates the shortest significant ranges. 1 Entries included in the same line are not significantly different from each other, and those not included in the same line are significantly different. Shortest significant ranges have also been calculated for the char- acteristics other than yield. They are not included here, but may be obtained by writing to the Department of Agronomy, University of Illinois, Urbana. 1 These ranges have been computed in accordance with Duncan's "Multiple Range Test." See D. B. Duncan, "Multiple Range and Multiple F Tests," Bio- metrics 11 (1), 1-43. 1955. Table 4. East-Central Illinois, Champaign County Rank in yield Hybrid or variety Yield at 13% mois- ture Shortest significant ranges* Test weight Plant height Head exser- tion Days to bloom bu/acre Ib. 1958 RESULTS 1 U.S. 13 (corn) 129 58 107 2 AES 702 (corn) 127 58 101 3 111. 1332 (corn) 119 58 100 4 DeKalb DSOa Ill 57 69 10 81 5 Texas 601 110 57 62 9 84 6 RS 610 . 110 56 62 10 83 7 Texas 620 105 58 64 8 82 8 Texas 611 104 56 65 9 84 9 P.A.G. 435-S . ... 101 59 55 8 83 10 AMAK R-10 101 55 56 11 84 11 RS 501 100 56 72 8 78 12 RS 608 . 99 56 58 10 83 13 Texas 660 99 58 63 10 84 14 DeKalb C44a 98 54 52 8 82 15 RS 630 . 97 54 61 6 84 16 AMAK R-12 97 55 60 8 85 17 DeKalb E56a 97 56 60 9 84 18 P.A.G. 605-S 96 57 64 9 85 19 DeKalb Exp. 1 95 i 57 67 9 85 20 P.A.G. 515-S 94 54 64 7 86 21 RS 590 93 56 59 9 85 22 P.A.G. 425-S . ... 93 57 59 10 82 23 NK 230 88 55 57 9 85 24 NK 135 86 56 65 10 79 25 Texas 640 . . 86 52 49 8 85 26 RS 650 85 56 56 8 85 27 NK 140 85 56 60 8 86 28 DeKalb Exp. 2 84 54 55 9 86 29 Texas 645 . 80 52 48 6 85 30 Hegari (variety) 79 56 68 7 78 31 NK 220 79 56 58 9 87 32 NK3000 78 55 61 10 80 33 Westland (variety) 78 55 46 5 87 34 Martin (variety) 76 57 57 8 88 35 Midland (variety) . 74 57 63 6 84 36 Redbine 60 (variety) 73 56 61 8 86 37 Combine 7078 (variety). ... 70 38 Combine Kafir 60 (variety) 59 39 Plainsman (variety) 53 52 46 5 85 56 60 5 86 52 53 7 90 40 Reliance (variety) 42 55 55 8 78 Av. all entries 91 56 62 8 84 Av. 3 corn hybrids 125 58 103 Av. 28 sorghum hybrids. ... 95 Av. 9 sorghum varieties. ... 67 56 60 9 84 55 57 7 85 SUMMARY: 1956-1958 OR 1957-1958 AVERAGES 1 DeKalb DSOa (1956- 1958) 114 (1956- 1958) 59 (1956- 1958) 62 (1957- 1958) 10 (1957- 1958) 70 2 ^ Corn (av. of 3 hybrids) .... RS 610 113 112 58 57 110 60 9 71 4 Texas 620 109 59 62 8 72 S Texas 601 ... 108 59 58 8 72 6 Texas 660 104 58 61 8 74 7 Texas 611 103 58 60 7 72 8 DeKalb E56a 103 58 60 8 72 9 RS 501 101 58 69 8 66 10 RS 650 . . 101 58 55 7 74 11 RS 590 100 58 59 8 72 f Hegari (variety) 100 58 71 5 76 n Redbine 60 (variety) 90 57 58 7 73 14 Martin (variety) 86 59 57 8 75 15 16 17 Combine 7078 (variety) .... Combine Kafir 60 (variety) 82 78 76 53 58 58 47 57 58 6 4 6 74 74 72 18 19 ">0 Plainsman (variety) Westland (variety) 75 74 55 55 58 56 51 48 55 6 5 8 78 76 65 Av. corn hybrids 113 58 110 Av. 10 sorghum hybrids. . . . Av. 9 sorghum varieties. . . . 106 80 58 57 61 56 8 6 72 74 a Entries included in the same line are not different from each other at the 5-percent level of significance. 1959} GRAIN SORGHUM PERFORMANCE TESTS Table 5. Central Illinois, Mason County Rank in yield Hybrid or variety Yield at 13% moisture Shortest significant ranges* Test weight Plant height bu/acre Ib. 1958 RESULTS 1 RS 630 58 2 RS650 54 3 RS610 52 4 DeKalbDSOa 52 5 NK230 52 6 Texas 620 51 7 RS 590 50 8 P.A.G. 425-S 47 9 Texas 645 46 10 AMAK R-12 44 11 NK3000 44 12 AMAK R-10 42 13 RS 608 42 14 Texas 611 41 15 DeKalb E56a 41 16 DeKalb Exp. 2 41 17 P.A.G. 515-S 40 18 P.A.G. 435-S 39 19 Combine Kafir 60 (variety) 37 20 Hegari (variety) 37 21 Texas 601 36 22 Texas 640 36 23 DeKalb C44a 35 24 Combine 7078 (variety) 35 25 Texas 660 35 26 NK 140 34 27 Westland (variety) 33 28 NK 135 33 29 DeKalb Exp. 1 32 30 Plainsman (variety) 28 31 U.S. 13 (corn) 27 32 NK220 26 33 Martin (variety) 25 34 RS 501 24 35 P.A.G. 605-S 24 36 Redbine 60 (variety) 24 37 A ES 702 (corn) 18 38 111. 1332 (corn) 18 Av. all entries 38 Av. 3 corn hybrids 21 Av, 28 sorghum hybrids 41 Av. 7 sorghum varieties 31 SUMMARY: 1956-1958 AVERAGES 1 RS 650. . . 63 2 DeKalbDSOa 62 3 RS 610 61 4 Combine Kafir 60 (variety) 55 5 RS 501 52 6 Hegari (variety) 51 7 Westland (variety) 47 8 Corn (av. of 3 hybrids) 46 Av. corn hybrids 46 Av. 4 sorghum hybrids 60 Av. 3 sorghum varieties 51 60 58 58 59 58 59 57 60 57 60 59 60 58 58 58 60 59 59 58 59 60 59 59 57 59 60 58 56 58 58 56 58 58 60 58 57 56 56 58 56 59 58 58 57 58 5') 58 57 58 56 50 58 58 48 42 47 55 45 45 50 41 43 48 48 42 44 48 50 44 46 42 45 49 43 36 45 32 48 47 42 52 48 41 60 46 44 50 48 44 53 51 46 55 46 42 39 49 43 42 47 50 39 48 48 44 44 a Entries included in the same line are not different from each other at the 5-percent level of significance. 10 BULLETIN No. 643 [April, Table 6. West-Central Illinois, Henderson County Rank in yield Hybrid or variety Yield at 13% moisture Shortest significant ranges* Test weight Pro- tein bu/acre Ib. perct. 1958 RESULTS 1 U.S. 13 (corn) 132 2 AES 702 (corn) 126 3 111. 1332 (corn) 126 4 RS 610 124 5 AMAK R-12 122 6 DeKalb E56a 117 7 Texas 601 116 8 DeKalb DSOa 116 9 Texas 611 115 10 RS 590 113 11 Texas 620 Ill 12 DeKalb Exp. 1 Ill 13 RS650 110 14 Texas 660 108 15 AMAK R-10 106 16 P.A.G. 425-S 106 17 P.A.G. 515-S 105 18 P.A.G. 605-S 105 19 RS630 105 20 DeKalb C44a 104 21 P.A.G. 435-S 103 22 NK230 102 23 RS608 101 24 Martin (variety) 101 25 Texas 640 101 26 NK 3000 96 27 Plainsman (variety) 94 28 Redbine 60 (variety) 92 29 DeKalb Exp. 2 89 30 RS 501 87 31 Texas 645 86 32 Combine Kafir 60 (variety) ... 86 33 NK 220 86 34 NK 140 85 35 Combine 7078 (variety) 81 36 NK 135 80 37 Westland (variety) 77 38 Midland (variety) 75 39 Hegari (variety) 73 40 Reliance (variety) 43 Av. all entries 100 Av. 3 corn hybrids 128 Av. 28 sorghum hybrids 103 Av. 9 sorghum varieties 80 57 57 58 58 58 57 58 57 60 58 59 60 59 59 56 58 58 60 57 56 58 58 58 60 57 57 58 58 56 59 58 59 59 58 57 58 60 58 57 56 58 57 58 58 10.0 10.0 10.0 10.6 10.6 11.9 10.6 10.0 11.9 11.9 11.9 11.9 10.6 10.6 11.2 12.5 11.2 12.5 10.6 11.9 12.5 12.5 11.6 13.8 11.2 11.2 11.9 11.9 11.9 11.2 11.9 10.6 13.1 11.9 11.2 12.5 14.4 10.6 10.6 11.9 11.5 10.0 11.6 11.9 Entries included in the same line are not different from each other at the 5-percent level of significance. 1959] GRAIN SORGHUM PERFORMANCE TESTS 11 Table 7. Southern Illinois, Jackson County Rank in yield Hybrid or variety Yield at 13% moisture Shortest significant ranges* Test weight Plant height Head exser- tion Days to bloom bu/acre Ib. 1958 RESULTS 1 AES 805 (corn) 94 54 2 111. 1851 (corn) 86 54 3 111. 1332 (corn) 84 54 4 P.A.G. 435-S 69 57 56 13 70 5 Texas 640 68 56 52 13 72 6 AMAK R-12 65 55 61 12 73 7 P.A.G. 515-S. . 65 55 60 12 69 8 RS 610 63 57 60 14 70 9 NK 230 62 57 57 14 69 10 Texas 660 62 56 60 12 71 1 1 P. A.G. 605-S 61 55 56 13 72 12 RS 650 58 55 60 11 71 13 NK 220 ... ... 56 57 59 14 72 14 Texas 645 54 54 51 13 67 15 P.A.G. 425-S 54 58 50 12 69 16 RS 590. . . . 53 55 63 13 74 1 7 Texas 601 52 56 58 13 73 18 Texas 620 51 56 63 13 71 19 RS 501 . . 51 57 67 12 67 20 DeKalb C44a 51 55 57 9 75 21 RS 608 46 58 56 14 72 22 DeKalb D50a . . 46 58 73 12 73 23 DeKalb E56a 46 56 63 14 72 24 DeKalb Exp. 1 46 56 60 15 71 25 AMAK R-10 43 57 53 15 68 26 Combine Kafir 60 (variety) . . 43 27 Plainsman (variety) 43 28 Martin (variety) ... 42 49 62 8 78 54 55 12 77 57 61 11 76 29 DeKalb Exp. 2 41 56 53 11 70 30 Hegari (variety) 40 57 75 9 74 31 Westland (variety) . . 39 57 51 13 71 32 Reliance (variety) 38 55 54 9 65 33 Redbine 60 (variety) 38 55 59 13 72 34 RS 630 .34 55 62 10 73 35 Midland (variety) 33 51 58 9 76 36 Combine 7078 (variety) 31 37 Texas 611 29 53 47 11 73 51 68 14 76 Av. all entries 52 55 59 12 72 Av. 3 corn hybrids 88 Av. 25 sorghum hybrids 53 Av. 9 sorghum varieties 39 54 56 59 13 71 54 58 11 74 SUMMARY: 1956-1958 OR 1957-1958 (1956- (1956- (1957- (1957- 1958) 1958) 1958) 1958) 1 Corn (av. of 3 hybrids) 86 78 ? RS 610 75 54 10 65 ^ Texas 620. . . 67 54 10 66 4 RS 650 67 52 8 66 S DeKalb DSOa 65 62 8 66 6 RS 590 65 55 10 67 7 Combine Kafir 60 (variety) . . 64 54 6 72 S RS 501 ... . 62 62 10 61 9 Texas 611 56 57 10 68 10 DeKalb E56a 55 51 8 68 11 Martin (variety) . 55 52 9 70 Av. corn hybrids 86 78 Av. 8 sorghum hybrids 64 56 9 66 Av. 2 sorghum varieties 60 53 8 71 Entries included in the same line are not different from each other at the 5-percent level of significance. 12 BULLETIN No. 643 Table 8. Southern Illinois, Pope County Rank in yield Hybrid or variety Yield at 13% mois- ture Shortest significant ranges* Grain mois- ture at time of frost Plant height Dry Silage Head matter of at exser- silage at 70% tion time of mois- harvest ture bu/acre perct. in. perct. T/acre 1958 RESULTS 1 AMAK R-10 46 2 RS610 39 3 AMAKR-12 39 4 Texas 640 35 5 P. A.G. 425-S 34 6 Texas 660 33 7 RS 608 32 8 111. 1332 (corn) 32 9 Texas 601 30 10 P.A.G. 515-S 29 11 P.A.G. 43S-S 29 12 Texas 611 29 13 AES 805 (corn) 28 14 Combine 7078 (variety) ... 27 15 111. 1851 (corn) 27 16 Texas 645 26 17 NK230 25 18 RS650 25 19 Westland (variety) 24 20 RS630 24 21 DeKalb Exp. 1 23 22 RS 501 22 23 Texas 620 21 24 DeKalb DSOa 20 25 RS590 20 26 DeKalb E56a 19 27 Hegari (variety) 17 28 DeKalb C44a 16 29 Combine Kafir 60 (variety) 16 30 P.A.G. 605-S 16 31 Martin (variety) 16 32 NK 220 15 33 Plainsman (variety) 15 34 DeKalb Exp. 2 15 35 Redbine 60 (variety) 13 36 Reliance (variety) 9 37 Midland (variety) 7 Av. all entries 24 Av. 3 corn hybrids 29 Av. 25 sorghum hybrids. . . 27 Av. 9 sorghum varieties. . . 16 19.3 20.3 22.3 22.6 19.6 21.3 21.6 20.0 23.0 23.0 20.3 22.6 24.6 25.6 25.6 24.6 20.6 21.6 20.3 27.0 21.0 20.6 22.4 25.0 22.6 22.3 19.3 26.6 28.3 21.3 22.5 22.0 30.3 23.0 19.6 17.0 23.0 22.4 23.4 22.2 23.0 59 61 60 51 57 63 58 93 59 59 55 62 98 48 99 53 57 54 50 58 63 64 59 68 61 60 76 53 56 60 55 53 47 53 56 55 56 61 97 58 55 9 9 8 10 8 9 9 9 9 8 10 7 9 8 9 8 8 Q 9 9 9 8 40.0 38.1 36.5 37.8 39.3 32.1 37.8 49.6 37.0 35.3 32.8 31.1 39.8 33.6 36.3 39.3 42.6 34.6 34.6 32.6 36.6 33.5 34.6 37.0 37.8 33.1 33.0 35.5 31.6 32.1 35.6 32.8 32.0 32.6 41.3 29.8 28.5 35.7 41.7 35.8 33.3 8.8 9.4 8.6 3.9 7.1 8.8 7.2 4.9 8.9 5.7 8.8 9.5 6.7 3.7 7.5 3.2 7.4 7.1 5.2 7.0 7.3 5.1 6.3 6.6 8.9 7.4 6.0 5.1 5.9 5.7 4.7 5.2 4.9 4.4 8.2 3.8 3.5 6.4 6.4 6.9 5.1 SUMMARY: 1956-1958 AVERAGES 1 RS610 70 2 RS650 64 3 DeKalb DSOa 61 4 Corn (av. of 3 hybrids) ... 57 5 RS 501 54 6 Texas 620 50 7 Hegari (variety) 50 8 RS590 47 9 Combine 7078 (variety) ... 47 10 Plainsman (variety) 44 11 Texas 611 43 12 Martin (variety) 43 13 Redbine 60 (variety) 41 14 Combine Kafir 60 (variety) 41 15 Midland (variety) 36 16 Westland (variety) 34 17 Reliance (variety) 26 Av. corn hybrids 57 Av. 7 sorghum hybrids 56 Av. 9 sorghum varieties. . . 40 55 52 63 99 62 57 67 55 44 45 57 49 53 52 53 45 53 99 57 51 11.6 10.1 11.4 12.6 11.1 11.2 10.4 11.2 8.0 9.8 10.0 9.4 9.6 9.3 9.6 7.0 5.8 12.6 10.9 8.8 Entries included in the same line are not different from each other at the 5-percent level of significance. Urbana, Illinois April, 1959 10M 4-59 68053 UNIVERSITY OF ILLINOIS-URBANA