Com Demonstration (Continued from Page 113) up with com yield increases ranging from 15 to 30 bushels to the acre. Test plot supervisors stuck a tire iron straight down into the soil to the soil to demonstrate ground com pactness in the sub-soiler test section. Where the ground had been loosened in the row, the iron was easily ENVIRONMENTAL CONTROL FOR POULTRY & LIVESTOCK BUILDINGS v *, ♦, a w v. #wyv <£*' Four basic components makeup of this system...the fan, the ini inlet power pack, and tt Coordinated, these f components can providi - -better-conversion-and-p< by removing stresses dui oxygen, excess humidit gases and temperature Whether you are updating an existing facility or building a new one, before you decide on an air system for your operation, call your local Chore-Time representative. RD4 EPHRATA, PA 17522 (FARMERSVILLE) sunk in to a depth of about a foot. Between rows, however, the soil was solid and difficult to penetrate. Since the test plot had received only four inches of rain from the May 10 planting date through August 15, researchers credited the innovative tillage method with maximum retention of the scarce Summer moisture. AIR INLETS Equip, Agri • SALES Conservationists estimate that the equivalent of six indies of topsoil on four million acres is lost an nually. Stressing the wise use of this precious resource, the plot supervisors set up side-by-side areas com paring Spring plowing, chisel plowing, disking and no-till. The Dekalb researchers recommend that the soil acidity level be as nearly correct as possible when planting no-tillage com, or herbicides will not perform INLET POWER PACK offers complete Inc. • INSTALLATION properly. Under a pH level of 6.5, some weeds, notably fall panicum grasses, will not be controlled. Volunteer com stalks remain a problem in no-till, too. One comparative test section depicted corn growing results from planting the seed at two depths; one plot was planted at one and one-half inch depth, while the other was put down three inches in the soil. The shallower planting was noticeably taller. : I*3 Hr $ ' "fi AIR SYSTEM : , f" control vS&i \ • SERVICE PHONE BUS. 717-354-4271 Lancaster Farming, Saturday. September 17. 1977 “This is our exotic plant breeding material," explained Dean Edwards, 1625 East Market Street, York, the regional manager for Dekalb Agßesearch, Inc. And, exotic it was, with plants ranging from 12 feet tail to knee high, some with striped leaves, some with six ears to the stalk, and some with all leaves but no ears. Specialists overseeing the planting depths urged far mers to contact their local weather bureaus and obtain the date of the last Spring frost for the past five years. Those dates should be averaged to obtain a general MEMO HAY, STRAW and EAR CORN SALE EVERY MONDAY AT 11AM. EVERY WEDNESDAY 12 00 NOON NEW HOLLAND SALES STABLES, INC Phone 717 354 4341 Lloyd H Kreider Auct city, stem of and lental CORNCRIBS-SALE PRICE 1205 Bu.-$655.00 F.O B. ZIMMERMAN ELEVATORS FOR CORN MILLER’S REPAIR WRDI, Bird-in-Hand, PA Gibbons Road Ph. 717-656-9013 frost-free date, and farmers are advised to then schedule com planting about two weeks ahead of that average. Another recom mendation was to insert thermometers at different levels of the soil early in the morning, and then compare the temperature differences at noon. Researchers see the main advantage of early planted com as hitting the most advantageous pollination period. According to tests, the longest day of the year is the most successful time for corn to pollinate. Late Summer weather usually becomes too hot and dry for the best results, as well as being a time of more con centrated insect in festations. (Continued on Page 114) 113