for positive disease control on potatoes, tomatoes and other vegetables You’re always ng/i£ when you rely on Du Pont “Manzate” D because it: □ Gives positive protection against a wide range of diseases. □Protects crops through rainy and humid infection periods. □ May be used with many of the commonly-used pesticides. □ Won’t damage plants when applied at short intervals according to directions. □ Won’t'clog spray nozzles or corrode equipment. □ Has small particles which make better contact with disease organisms. O toeadilymixes-With water...aneasy to use wettabfe powder." Be right always Order your supply of DuvPont ‘ Manzate'’ D from ' yoi;r local dealer today, or for more information write; Du Pont, Industrial and Biochemicals Dept, Room N-2439, Wilmington, Delaware 19895. . „ With »n> chemical, follow labeling instructions and Minings carefully. i - . Unfitted Legume For Cattle Feed Studied Recent Agriculture Re search Service trials suggest that unwilted legume silage would be a good cattle feed ,—if a substitute for wilting could be found to make the silage more palatable. Dairymen know cattle do poorly on unwilted legume silage because they won’t eat nearly as much of it as of other feeds, A'RS says. How ever, if a farmer didn’t have to wilt his forage after mow ing he’d save time and elim inate the risk ot damage from rain. Dairy cattle nutritionist D. R. Waldo found in tests at Belt&ville, Md., that cattle got as much nutrition per pound of dry matter from unwilled ’silage as shey did from field-cured hay. He eliminated through research the possibility that * slower passage of feed through the digestive tract causes cattle to eat less unwilled silage. He concluded that this low er consurtvption must be be cause unwilted silage isn’t palatable. But wily" is it less palata ble? Is rt because of the for- Lancaster Farming, Saturday, May 14, 1966 Management Ability Seen Biggest Single Factor In Farmer’s Success The ability to manage Is ‘pecialist .it the Unhorsltv of more important in determin- Delawnie “There is little ing a farmer's success than doubt about the tact Hint the the size of his farm or qual- leal rtilleience between the tty of land or type of enter- su'cesslul and the ni.uginal prise, according to W. T, Me- businessman be it tanner Allister, farm management Continued on Page 2,!) motion of amines and alde hydes— chemicals sometimes found as byproducts of un wilted silage—during fermen tation in the silo? Reseaich at other stations suggests this possibility, but it hasn’t established whether the for mation of these chemicals is the only, or even the main reason, for the low palatabil ity of unwilled silage. ‘So far, attempits to pre vent these chemical byprod ucts, from forming by mixing additives with silage at the time of ensiling haven’t been successful. Scientists thuik, however, that the use of ad ditives may yield good re sults eventually. This ap proach is being followed by ,s* V s A . 5 *4 s •ta u s •** Bottei Things tor Hetfer 1 i\mg .through Chemistry AR'S and in other reseaich in all major silage pi educing count) les Waldo’s trials followed woik dond several years ago by ARS nutritionists J W. Thomas Thomas lan tests with unwilted silage and dis proved the possibility that its bulk, caused by its high, water content, might make it difficult tor cattle to consume it in large enough quanti ties He soaked hay in water until it w r as as wet as unwilt ed silage, then compaied the intake of the two teeds. Cat tle ate the wet hay more readily than t'he silage, show ing that high water content itself was not responsible tor the low intake ot the silage. For his own comp'ansons, Waldo used two~ gioups of heifers. Heifei s in one group were ted good quality legume torage put into a silo with out wilting Those in the oth er group re'cened hay cut from, the same field Thus, the nutritionist was able to compare digestion ot high moisture toiage to that of forage trom which most of the moisture had been re moved xfM «. s / Waldo completely emptied the rumens ot heiteis ted the tu’o lations and calculat ed the gioss wet and diy weight of the 'contents He tound the iimnen load of sil age-ted heifeis consideiably lighter, showing that they weie not overstiaimng the capacities ot then mmens. Other data showed that heif ers on silage drank less wa ter, partially compensating for the high watei content of their teed ss-A'' l V < PC A '&*> This finding still lett the possibility that digestion of silage is inefficient and that it stays in the rumen longer, showing the overall piogiess of feed through the animal. No su'ch slowdown proied to exist. When he measuied the flow of feed into the lumen against the level ot feed le maining there, Waldo found that silage passed thi ough the rumen as tast as hay, or faster Next, he cheeked the pos sibility that digestion might be less complete because tei nientation in the silo had al. teied the digestibility ot the silage. The ette'ct ot silo tei men tation proved to be measui able, but only foi one fibei—• hemi'cellulose Since hemicel lulose forms only a small per centage ot legume toiage, the net eitect on digestibility is small. Then, Waldo looked bevond the lumen, -where the capa city ot the digestive tiact is nvuch lower His reseaicli showed that Ireiteis on hay passed moie feces pei day than those on silage, indicat ing that the digestive tract of silage-fed heiters must be unrestricted fact, used below capacity. Waldo found that eneigy furnished per pound of dry matter was the same tor both fonpa of -fped: Nitrogen derived from silage ,was slightly less per pound of feed, bht enough to support a goo'd growth rate. 17
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