Various ideas viewed at vegetable conference ByKENDACEBORRY HERSHEY - All aspects of vegetable growing were covered at the 1978 Pa. Vegetable Conference and Trade show held this week at the Hershey Motor Lodge and Convention Center in Dauphin County. Any sub ject from tomato processing to weed, disease, and insect control was covered in the three day conference. One subject of particular BEFORE YOU BUY - CONTACT US & GET FULL DETAILS ON THE WAY A THERMA*STOR WILL SAVE YOU MONEY. 20 mscoo*" THERM A 61 STOR CAN BE INSTALLED IN NON-ELECTRIC SYSTEMS ALSO. Model DlBOO Gal. Girton (2) Model D 2 500 Gal. Girtons, like new Model D 2 clean SHENK'S FARM SERVICE 501 E. Woods Drive Lititz, Pa. 17543 Bulk Tanks & Therma • Stor After 5 P.M. Call Titus Burkholder 717-859-1620 Our Service Trucks Are Radio Dispatched 24 HR. SERVICE OFFERED interest to those attending the convention was the agricultural use of sewage sludge, with the topic being discussed by Raymond Shipp, Extension agronomist of Penn State. Shipp stressed that if anyone uses sewage sludge for crop production, whether it be for corn or vegetables, they should first know the contents of the sewage sludge. Knowing exactly Girton, 400 Gal what is being put on the fields is very important, he added. A complete chemical analysis can be done at Penn State by the sewage sludge testing service, and anyone interested in having this done should contact their county agent. Cost for this service is $lOO per sample. There are many ad vantages to using sewage sludge, Shipp explamed. It contains essential plant ON THERMA*STOR TILL FEBRUARY 11 DUE TO THE HOSPITALIZATION OF OUR SALESMAN, TITUS BURKHOLDER USED TANKS Model O 600 Gal. Mueller with Mueller automatic washer & compressor Model 0 500 Gal. Mueller with automatic washer & comp ressor DATA FROM PP&L TEST RUN INDICATES SAVINGS ON ELECTRICITY! THERMA’STOR THE ENERGY SAVER. •Makes 50 Gallons Of Hot' Water At Up To 190 Degrees Every Time You Milk •Makes A Gallon Of 110 Degrees Water For Every Gallon Of Milk Cooled •Completely Eliminates Fan-Cooled Con densers • Has Stainless-Steel Heat- Exchanger And Storage Sections For Maximum Corrosion Protection K\ 600 Gal. Jamesway 500 Gal. Jamesway 500 Gal. Mojonnier nutrients. Sewage sludge is basically organic matter. When it is added to the soil, it is good for general soil tilth, and increases the water holding capacity of the ground. The soil structure is improved. The essential micro-nutrients are also contained in sewage sludge. These are the necessary elements needed by plants in very small amounts. There are disadvantages to using sewage sludge, too, Shipp continued. It contains heavy metals, and while some heavy metals are essential plant micro nutnents, others are not. However, all will persist, and build up in the soil, accumulating. Some heavy metals, such as cadmium, are not only non-essential but also highly toxic to animals and humans. These metals are taken up by plants quite readily, and thereby being incorporated into the food cham. Cadmium is unique and important to consider in the fact that very small amounts of it (one to two parts per million) can result m significant amounts of cadmium in plants grown on that soil. Whereas it takes from-10 to 70 parts per million in soil before cad mium becomes toxic to plants, plants growing in a Phone 717-626-1151 Lancaster Panning, saiuraay, Raymond Shipp soil amended with high cadmium-containing sludge represents a food chain contamination hazard. Yet those plants will show no toxic effects in yield production. Shipp stated that sewage sludge has been used on land for years, yet its contents have never been examined before. He believed that it will be used more in the future, as sewage can no longer be dumped m the ocean and land use becomes more necessary. The sludge NEW ALL STAINLESS RESERVE TANK ( '*% I' BOU-MATIC] FRA Series Vacuum Suppliers. The FRA Series supplier is a high-capacity, fast recovery unit designed to handle milking systems of all types and sizes. They provide smooth, constant air-flow, with sufficient vacuum reserve so necessary to proper milking efficiency. BOU-MATIC offers the FRA Series suppliers in two basic styles: As a pre-assembled, belt driven unit, mounted on a 30 gallon stainless steel reserve tank; or as a pre-assembled Direct Drive unit for use systems where a balance tank is installed. Either way, a BOU-MATIC FRA Supplier properly sized to your system requirements, will will prove a most profitable investment towards better milking for your cows. HOTO E. KREIDER CO. CARL SHIRK Cochranville, PA Lebanon, PA (215)932-4700 (717)274-1436 LAHWE FAHMSIHAD JONES DAIRY SERVICE AUTOMATION Lester Jones, Jr. Milton, PA Medford. NJ (717)437-2375 (609)267-5246 CLUGSTON IMPLEMENT SHENKS FARM SERVICE Chambersburg, PA Lititz, PA (717) 263-4103 (717) 626-1151 David S. Ross would be better to use, he added, if industry would remove the harmful elements before sending it to a sewage plant. This process is known as pretreatment. “I fmd it strange,” Shipp related. “On all chemicals, there are labels telling exactly what is m the mixture, and people are told to read those labels carefully before using. Sewage sludge, however, has no labels, and the use of it without knowing its contents is dangerous.” (Turn to Page 98)