No-till NEWARK, Del. - No tillage has received top i Silling for some tune as an I energy-saving way to grow field crops. It’s also time saving, and has the potential to increase yields. Now a-researcher at the University of Delaware’s Agricultural Experiment WAREHOUSE SPEC! Quantities Limited While Warehouse Supply Lasts MIX-MILL ROAST-A-TRON List $5866 SPECIAL *3900 40' HIGH MIX-MILL HICAP ELEVATOR Includes 5 HP motor, 5 foot swing-a-way hopper with 1 HP motor 19' CROSS BALE CONVEYOR *149 120 Bu. MIXER-BLENDER '--J j ,**„ AUGER BOX / rv J With 8 foot ««.K, i <&&}T , vertical unloading ZZ L_ auger for mixing \vC nU and delivering feed \ “ *2048 _ _ IN DOOR GRAIN BINS • 27 foot diameter 6547 Bu. ... with in & outside ladders * 1250 • 9 foot diameter 400 Bu •201 Call or write for quotation on complete gram handling drying and storage system teed grinding mixing and processing systems bulk tank metering weighing and han dlmg equipment ★ Top Pa. Distributor for 1977. 78 & 79 awarded by G.S.I. MARTIN DISTRIBUTORS, INC. 520 PRESCOTT RD.. LEBANON, PA 17042 PHONE: 717-866-4906 or 866-4555 seen as great soil builder Station reports another important benefit from no till: soil improvement. Results of field penments at the Delaware research station show that no-till increases organic matter vn the soil, conserves moisture, and raises the nutrient-holding capacity of *1854 soils. University agronomist William Mitchell has studied fourteen pairs of farms (tillage vs. no-tillage) m continuous com production from one to eight years, with a broad range of soil types. His tests confirm that no-till is a valuable soil builder. ex- A buildup of organic matter or humus under no tillage was clearly evident in test fields, reports Mitchell. It was most apparent in soil depths up to three inches. But in some cases, it reached depths of nine inches. In creases in humus ranged from zero for some reduced tillage (chisel plowed) fields to almost SO percent for fields which had been in no tillage for seven to eight years. “This buildup m organic matter explains the higher EXTRA WINTER DISCOUNT 100/ m GRAIN BINS iL /O Ends November 25, 1980 This extra discount on drying and storage bins and some related equipment is in addition to our low F. 0.8. Factory Discount prices. Order Now and save an extra 12% plus another 10% for investment Credit. Delivery can be scheduled up to June 30. Call Collect NOW and Order. _ j2j COMPLETE GRAIN STORAGE SYSTEM™* 32V. Includes bin aeration tan transition channel lok sub floor panels humidistat w/cord and thermometer 8' unloading auger w/center well and intermediate well totally enclosed motor w/dnve Kit and guard control rods and freight ■" Based on 48x9 ring bin yield potential of no-tillage fields,” he says. Mitchell’s studies show that nutrient exchange capacity is higher with no tillage, and leaching of nutrients is reduced. The added nutrient holding capacity (or cation exchange capacity) of soils in no-till fields comes from the accumulation of organic matter in them, explains the agronomist. This increased nutrient-holding capacity minimizes the leaching of such nutrients as calcium, magnesium and potassium. Soil in the average no tillage field in the Delaware study had 21 percent more exchange capacity than soil in tilled fields, he reports. Some long-range no-tillage fields had 55 percent more exchange capacity. "f s f V GRAIN J 131 CfYia storage!' |s 26*r. K Lancaster Farming, Saturday, Novembers, 1980—023 •This highly desirable change in soil activity generally extended to a depth of six inches, in con trast to organic matter accumulation which was concentrated in the top three inches of soil,” he says. There was evidence that accumulated organic matter under no-till effectively reduced potassium leaching. Soil samples from notillage fields contained 30 percent more potassium than those from plowed fields. In one case, where 200 pounds of potash had been broadcast annually since 1972, there, was 60 percent more potassium in the three-inch soil depth under no-till than in soil samples from plowed land. Samples taken from a loamy sand soil routinely cultivated showed a dramatic rate of potassium leaching in a single season under irrigation and heavy rainfall. Under the same conditions without tillage, there was no evidence of leaching. A comparison of soil samples from con ventionally tilled fields with those from no-till fields under rye, vetch and com residue covers showed organic matter levels ranging from 1.47 percent DON'T BE SLOW Call Now To Place Your CLASSIFIED AD Ph; 717-394.3047 or 717-626-1164 } NCLUPES; • Roof Ladder • Outside Ladder • Inside Ladder • Safety Ring • Large Fill Hole • Manhole • 2-ring Door • Base Angle • Bolts & Nuts • Caulking • Hardware (conventional tillage), to 1.93 (rye cover), 2.13 (vetch cover) and 1.83 (com residue cover) after seven yean. Assuming a five percent nitrogen level, this organic matter contained about 735 pounds of nitrogen per acre for conventional tilLage, 965 pounds for no-till with rye cover, 1,065 pounds for no-till with vetch, and 915 pounds for no-till with com residue as a cover. Mitchell also found that no-till cover crops acted like pumps, bringing phosphorus, ' potassium, boron, manganese, and zinc from deep in the soil and concentrating them in the topsoil layer where they were readily available to com plants. For example, potassium in the top nine inches of soil under full tillage tested at 189 pounds per acre. No tillage without a cover crop raised the K level to 231 pounds, thanks to ac cumulated organic matter and reduced leaching. When rye and vetch covers were added, K accumulated to a high of 292 pounds. The scientist found similar nutrient accumulations in the topsoil with other elements, especially in the case of boron, a highly teachable nutrient. 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