Page 28—Corn Talk, Lancaster Farming, Saturday, April 17,1993 (DdDIN IMal (Continued from Page 26) three hybrids yielded one bushel more, seven bushels more and 17 bushels more, respectively. Older Row Width Studies Between 1974 and 1980, Pio neer agronomists conducted num erous studies comparing com in 38-inch vs. 30-inch rows. The re sults of many years and locations of data add more weight to the re cent findings in 20-inch vs. 30-inch rows. Corn Yields in 20- and 30-Inch Rows (Source: Illinois Agronomy Handbook 1991-1992) Plants/A 30 Inch Width 20 Inch Width 20.000 165 Bu/A 174 Bu/A 25.000 172 188 30.000 174 187 On the average, com in 30-inch rows yielded seven bushels per acre or five percent more than in 38-inch rows. This is almost iden tical to the difference between 20-inch and 30-inch rows in the 1991-1992 studies. Of 27 different environments, only one showed an advantage for 38-inch rows. Even »*’“ -ress locations showed a 4.3 peicv.it advantage for narrow rows in Pioneer testing. Results Of Illinois Studies Studies were conducted by the University of Illinois at three populations 20,000, 25,000, and 30,000 plants per acre. According to the Illinois Agronomy Handbook, most stud ies have shown yield increases of five to eight percent when rows are narrowed from 30 to 30 inch es. HARVEST VARIETY 7 WIDTH POPULATION 3733 15” 40,000 3733 30” 31,000 3751 15” 3751 30” 3527 15” 39.000 3527 30” 27.000 Although data for com silage in narrow rows is hard to come by, we did have a cooperator who planted three Pioneer varieties at 30-inch and 15-inch row spacings this past growing season. The 15-inch spacing was accom plished by doubling back with a 30-inch planter. Populations were targeted at 40,000 for the 15-inch spacing and 32,000 for the 30-inch spacing. Plant development was visually identical across row spac ings for the same hybrid, and for age analyses showed no signifi cant differences. As can be seen from the data, there was an average increase of 3.2 tons of silage for the 15-inch/40,000 population treat ment versus the 30-inch/32,000 treatment. Although the plot was not set up for rigorous statistical analysis, the results are nonethe less very encouraging. In summary, a number of stud ies support the yield advantage of growing com at high populations in narrow rows, and we can expect this practice to continue in the coming years. We still need to evaluate such factors as standability, disease and pest interactions, maturation and drydown rates, fertilization, and other relevant topics. MOISTURE 65.4% 66% Advantage 55.2% 58.1% Advantage 70.2 70.6 Advantage 40.000 29.000 Silage Yields TONS AT 65% 21.21 19.74 1.47 Ton/Acre 23.90 18.29 5.61 Ton/Acre 21.16 18.58 2.58 Ton/Acre CASE IH 7110-130 HP, 7120-150 HP 7130-170 HP 7140-195 HP 7150-215 HP wi Aui R CASE IH 5300 GRAIN DRILL • 20x6 • 24x6 With Heavy Duty Disc Openers And Press Wheels ATTENTION FARMERS: If Parts An Needed After Noun To Kttp You Going, Call Mitt At Home - 665*6772 thactors • Ford 4000 Tractor w/Loodor • Cm IH 7110 Tractor w/Cib, 520 Hre., Ilka Now • IH 706 Tractor • IH 574 Tractor w/2250 Loader • MF 1100 Tractor • JD 2550 Tractor • IH 1460 Tractor wtCab • IH 565 Tractor, Lika Now SKID LOADERS NH 77i Skid Loader NH 553 Skid loader w/ Bucket, 1480 Hre. NH Dl3O Bockhoe NH 325 Skid Loader • NH 1400 Hayblno, 300 Hre., Liltt Naur • NH 1498 Hayblm, 12 Ft. Haad, Cab 1 Air, Dltaal • NH 1495 Hayblna • NH 1469 Hayblna • NH 310 Balar w/Throwar • NH 269 Ralar w/Throwar • NH 575 lalar w/77 EJaetor CASE IH SKID STEER iNH 276 IZ w/Thrower * KaWuo •NH 651 Round Bal.r, Like . STSSTVESS Han-aiar. • NH653 Round Mor,Twin., N, " OW C#rnh, * d - Bate'Command , uu a** ** • “H » “t. Wlra Tio, Llke.^” 2 A NiW Qy| ‘jSISSSSi!!!Z -NH 1033 tato Wagon uu »alor wjhrower . NH M chopp(r ‘ S S S J? Ufld • NH 451 Slekl * Mower • NH« Btower, 1000 RPM >(2) , H 120 Forage Boxes, • IH 56 Blower ■«.< < Tnn e .„ •NH 461 Hayblno " 3 ’ l2 Ton G “ r •HHWHarblne 6WHMM • NH 4K Hayblno ■ NH 512 Spreader •NH 460 12 Ft Hydroewlng .NH 701 Spreader, Hyd. •NH 144 Windrow Invertor, Endgate, Top Beater Demo . NH 307 Slurry Spreader • Vleon Wheel Rake . NH 328 Spreader • NH 251 Rake •NH 860 Foraga Harvaatar „ . •NH 900 Harvaatar, Malal • Haybuatar 215 Rd. lala KSm-cSJ- C#n,rol, ■ •A 1350 Grind. r/Ml»r •IH 120 Slekla lar Mowar, 3 "/Sc'la. Pt • NH 357 GrlndarMlxar With Mnlcher Attachment - 23 Ft. CASE IH 3800 & 3900 DISC HARROW • Rock Hex Bearing Hangers • Hyd. Fold Wings The Deals Have Never Been Better! MODELS 1840. 1845 • Brllllon 5 Ft. Landtcipa • Wood* 84 Rotary Cottar • Buahhog 10 Ft. Rotary Mo war • Caaa IH SlOO Grain Drill, 20x1, Praia Whaala, Saadad 14 Acres • •rllllon 7 Shank Chlaal Plow • (2) trillion 5 R. Wing Packar •Millar II FL Okra Harrow, Hyd. Wing Fold • trillion 13 Ft Culllmulehor • AC 2(00 Hyd. Feld Dlae • White 54004 Row Air Plantar, Dry FortHbar • JO 1200 Grain Drill • trillion 131’ CuMpackor • trillion 11 FL Cultlpaekar • NH ODIN Offawt Dlak • AC II FL Wing Dlae Harrow • IH 370 Dlae Harrow •IH 7001 tottom Auto Raaot Plow planting » titj-ack
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