\ WOOSTER, Ohio Soybean and com growers have enough to worry about with wet weather and late plantings, but another pest may also be looming on the hori zon. Ohio State University’s Ron Hammond has been studying seedcom maggot damage to soy beans and he says although infes tation isn’t a major threat to Ohio fanners, it isn’t a minor one, either. Hammond, a researcher at the Ohio Agricultural Research and Development Center’s Wooster campus, said the seedcom maggot damages the plants by feeding on the cotelydons the seed lobe or primary leaf and actually destroying the plant. The maggot also likes to feed on the soybean plumule, or the growing tip, re sulting in a plant with two main branches. These plants are known as Y-plants or snakeheads. Y plants will not grow as vigorously as normal plants. “Either of these types of injury will result in yield loss,” Ham mond said. “Also, if the plant stand is poor, a grower can end up with poor weed control due to a lack of soybeans that will out compete weeds.” Hammond has seen fields with over SO percent stand reduction because of this insect. Normally, stand reductions are prevented m Brillion m i. ' d When You Buy A J 32551 You Get The Best r COMPACTION COMMANDERS ] NO-TILL RIPPER/DEEP RIPPER - 3-5-7 Shanks | Bullion introduces m » their new * M Jf- W ' f Compaction Commander... designed M V 1 I %(4l to break up hard- 111 W pan and compac- J tion as deep as 20". The standard V-shaped alloy point and wear strip leaves residue on the surface with minimal soil disturbance. Auto-rest shanks with 20' of trip height allows for non-stop tillage. Parabolic shanks lift and fracture the soil. 39" of underframe clearance assures trouble free operation even in heavy .residue. W LANDCOMMANDERS] 3-5-7-9-11-13 Shanks I The front disc gang has 22” x 1/4” disc blades on 15” spacings. They are designed to cut residue and work the ground to a depth of 6”. The Landcommander has the ability to till from 8” to 20” deep. The rear disc gang has 20” x 7 ga. disc blades on 7.5 spacing. The 6”x4” mainframe is designed to handle the stress from the deep till shanks and disc gangs. Cover Crops with seed treatments. Hammond has been experi menting with no-till methods to combat seedcom maggot infesta tions. While it was once thought that no-till increases seedcom maggots, that’s not the case. Ham mond said. “Seedcom maggot damage in crease when a green, living cover such as alfalfa, a grass cover crop like rye or wheat, or heavy weed growth is incorporated in the field. No-till does not increase the prob lem according to all of our work.” Problems are limited to those growers who use a type of green, living cover crop which is incor porated into spring soils. “If they choose to leave the cover on the soil surface and kill it with herbi cides, they shouldn’t have a problem.” Hammond knows of growers who have plowed or disliked a cover crop, and then had poor stands. By the time they became aware of the problem, most mag gots would have pupated and adults would have emerged, resulting in crop loss. The chal lenge is that farmers rarely think damage is caused by seedcom maggots. Their first thought is a seed disease or planting problem. “A majority of Ohio growers don’t employ such covers in their fields,” Hammond said, “so the insect shouldn’t be considered a May Keep Pests Undercover major concern. However, if alternative management practices require cover crops and growers begin to incorporate those into the soil, I would expect the problem to increase.” By the time seedcom maggot damage is discovered, nothing can be done. A seedcom maggot prob lem has to be anticipated and man agement tactics employed at planting time. A seed treatment is the first choice; however, there are alternative methods to insecticide seed treatments. Hammond A LESSON WELL LEARNED... LANCASTER FARMING’S CLASSIFIED ADS GET RESULTS! ADAMSTOWN Adamstown Equip. Inc. ALLENTOWN Lehigh Ag Equipment BECHTELSVILLE Miller Equip. Co. CARLISLE Gutshall's, Inc. CENTRE HALL Dunkle & Grieb, Inc. CRESSON & BELLWOOD Hines Equipment, Inc. DOVER George N. Gross, Inc. EASTON Geo. V. Seiple ELIZABETHTOWN Messick Farm Equipment Co. INTERCOURSE C.B. Hoober & Son GREENCASTLE Meyers Implement GREENSBURG J&M Machinery Co. LEBANON Umberger’s of Fontana LOYSVILLE Gutshall's, Inc. OAKLAND MILLS Peoples Sales & Service OLEY Pikeville Equipment, Inc. QUARRYVILLE Grumelli Farm Service TAMAQUA Charles Snyder, Inc. WATSONTOWN Deerfield Ag & Turf Center, Inc. | Maryland | RISING SUN Ag Industrial Equipment | New Jersey \ BRIDGETON Leslie Fogg ELMER Pole Tavern Equip. Sales Corp | Virginia | HARRISONBURG Rockingham New Holland, Inc. recommends waiting two to three weeks after tillage until 2SO heat units have accumulated. Maggots are attracted to the tilled cover crop to lay eggs, so the population begins at the time of tillage. “You can follow its develop ment with heat units. At 2SO, most insects will begin pupating, a stage when they no longer feed. After accumulating 250 heat units since tillage, the grower should be at a time when it would be safe to plant.” Heat units ate accumulated by LAND PRIDE THE POWER PACKAGE POWERED RAKES • 72" and 96” models available • 20 degree left or right angling capabilities • Optional Danish Tine Kit with staggered rows • Heavy-duty gauge wheels with sealant • Heat treated material control blade The Land Pride family... quality from the ground up. Pennsylvania Betts Equipment 3139 Windy Bush Road,Rt 232 New Hope, PA 18938 215-598-7501 C.B. Hoober & Son, Inc. Main Street Intercourse, PA 17534 717-768-8231 C.B. Hoober & Son, Inc. East Main Street McAlisterville, PA 17049 717-463-2191 Deerfield Ag & Turf Center, Inc. RR 2 Box 212 Watsontown, PA 17777 717-538-3557 Detlan Equipment, Inc. 141 East Mam St. Silverdale, PA 18962 215-257-5177 Dunkle & Grieb, Inc. RR 2, Box 14 Centre Hall, PA 16828 814-364-1421 Rodio Tractor Sales North White Horse Pike Hammonton, N.J 08037 609-561-0141 Warren County Service Center adding the maximum and mini mum air temperatures in Celsius from the previous day, dividing by two, and subtracting the base temperature. The base tempera ture for seedcom maggots is 3.9 degrees Celsius. For more information on pro tecting crops from seedcom mag gots, contact Ron Hammond, Department of Entomology, Ohio Agricultural Research and Devel opment Center, 1680 Medison Avenue, Wooster, Ohio 44691, or call (330) 263-3727. Eckroth Bros Farm Equipment Rd 2, Box 24A New Ringold, PA 17960 717-943-2131 Eckroth Equipment Co. 4910 Kernsville Rd. Orefield, PA 18069 610-366-2095 Hines Equipment RT. 220. Belwood, PA 814-742-8171 Keller Brothers R 7 Box 405 Lebanon, PA 17042 717-949-6501 1950 Fruitville Pike Lancaster, PA 17601 717-569-2500 M.S. Yearsly & Sons West Chester, PA 610-696-2990 Marshall Machinery, Inc. Route 652 Honesdale, PA 18431 717-729-7117 Frank Rymon & Sons, Inc. RD 3, Box 355 Washington, N.J. 07882 908-689-1464 228 Route 94 Blalrtown, N.J. 906-362-6919 Nicarry Equipment Co. RD 2, Rt. 61. 3 Miles S. of Leesport, Reading, PA 610-926-2441 Norman D. Clark & Son, Inc. Honey Grove, PA 717-734-3682 Pikeville Equipment Inc. RD 2, Oysterdale Road Oley, PA 19547 610-927-6277 Stoltzfus Farm Service Cochranville, PA 610-593-2407 Stouffer Bros Inc. 1066 Lincoln Way West Chambersburg, PA 17201 717-263-8424 Thomas L. Dunlap Rt. 220, Main St Exit Jersey Shore, PA 17740 717-398-1391 Tractor Parts Co. 335 Central Road Bloomsburg, PA 17815 717-784-0250
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