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MONDAY, MAY 21, 1951 «HE DAILY TIMES-GAZETTE PACE FIFTEEN Rl Authorities Study Potato Fertilizers Ottawa -- Fertilizer formulae studies have been conducted with the potato crop for periods rang- ing up to eleven years on Illustra- tion Stations in potato growing areas of Eastern Canada. This work has been largely concentrated on the Fort William and Kenora stations in Ontario, the Peribonca and Luce- ville stations in Quebec, the East Centreville and St. Quentin stations in New Brunswick, and the New London station in Prince Edward Island, The studies conducted on these station farms were designed to test the value of manure and of chemical fertilizers carrying vari- ous levels of nitrogen, phosphorus, and potash both singly and com- bined, and when used as a supple- ment to farmyard manure or as a straight fertilizer application. Man- ure was applied in the fall preced- ing the potato crop at a uniform rate of approximately 10 tons per acre and the fertilizers were ap- plied broad-cast in the spring. In these experiments the various levels of nitrogen were represented by such formulae as 3-8-5, 6-8-5, and 9-8-5; of phosphorus by such as 3-8-5, 3-12-5, and 3-16-5; and of 'potash by such as 3-8-5, 3-8-10, and 8-8-15. The uniform rate of applica- tion used in different tests was 2,000 lb. per acre at East Centre- ville, 1,500 lb. per acre at New London and St. Quentin, 1,000 1b. per acre of Luceville, Fort William and Kenora and 600 1b. per acre at Peribonca. To assess the value of the various treatments the yield of marketable potatoes was determined through harvesting each plot individually. The results of these experiments to date, says R. R. Cairns, Illustration Stations Division, Central Experi- / mental Farm, Ottawa, indicate that wide variation exists in the fertility requirements of the soils on these various station farms. The application of manure through a three year period gave an average yield increase of 53.1 bushels per acre at New London. The crop response to manure at Luceville has been negligible during the three years of testing. Increases as high as 159 bushels per acre have been obtained from 24 ton per acre manure applications at Peribonca in tests conducted over the past 11 years. At East Centreville a 43.2 bushel increase has resulted from ten ton applications of manure through a six-year period. Manure increased the yield of marketable potatoes 104.1 bushels per acre at Kenora on the average of 1949-50 results and 25.6 bushels in 1950 at Fort William, Manure was not test- ed at St. Quentin. The results obtained at New Lon- don indicate that a fertilizer high in nitrogen and potash and medium in phosphorus is required to pro- duce a good potato crop. On the tation with soothing Cuticura Ointment, Contains scientific medicinal ingredients. Buy at druggist today. At a ceremony in the New York Naval Yard in Brooklyn, Italian and officers stand at attention in front of two destroyers being turned over to the Italian Navy. Reviewing the men are Lt.-Comdr. Vittorio Savarese (left) of the Italian Navy and Capt. David D. Hawkins of the New York aval Shipyard. cause it leads to the flying wing. The advantage in load or range to be derived from 'the flying wing cannot apparently be realized in an aeroplane of loaded weight of less than about 150,000 lbs., but at that weight and above there is said to be an improvement of about 16 per cent in range as compared with an orthodox aeroplane of com- parable weight and power. There is, nevertheless, a chance that an important advance in speed for smaller aircraft can be gained with the delta wing and that, in turn, will represent an economy. The Lgas turbine remains relatively heavy on fuel only so long as speeds re- main comparatively low. At supersonic speeds the fuel consumption of the gas turbine will begin to compare will with con- sumption rates of other types of engine. The gas turbine is ex- pected to advance a long way in supersonic speeds. known, but the designers believe it will not meet any insuperable How far is not. difficulty up to a speed of about 1,700 mph. At that speed, the heat of incoming air may make the ad- dition of further speed impossible; but there may be unforseen de- velopments before then. The pres- ent British experiment in triangu- lar wings can be taken as a serious effort towards the practical use of supersonic speeds and other full- scale contributions to the program can be expected, Want to buy, sell or trade -- A classified ad and the deal is made. 400 Military Items Said Standardized Washington, May 21--(AP)--The United States, Canada and Britain have reached some degree of stan- dardization on about 400 items. of military equipment, including sparkplugs, fuel and lubricants and voltage systems, it was reported Saturday. It is not the purpose of the pro- 7 ; gram to have identical weapons, a spokesman said, explaining that this is frequently not feasible due to differences in availability of ma- terials, manufacturing conditions and other factors, ; New Delhi, May 21--(AP)--Auth- oritative sources said Saturday Ine dia is "unlikely" to send troops te Korea. They gave this reply in re- sponse to reports published here that the United States has again requested India to do so. ~--Central Press Canadian, Britain Tries Wings to Boost Speed Of Her Jet Aircraft Triangular By E. COLSTON SHEPHERD Four jet aircraft with wings of triangular shape have now flown in England. They are essential- ly experimental. The three latest are single engine and single seat aircraft. The last to appear came quite recently from the Fairey Com- pany together with an announce- ment that wind tunnel investiga- tions had also been made by the company into all forms of the swept-wing, including "sweep-for- ward and sweep-back and com- pound M and W plan forms." The degree of sweep-back in the latest airplane is large. It amounts to 48 degrees which is much more drastic than the amount of sweep- Bt. Quentin station the most desir- able formula is one providing me- dium amounts of nitrogen and phosphorus and liberal quantities of potash. At East Centreville the re- quirements for nitrogen and potash are relatively low while a high phosphorus fertilizer formula gives the best results. On the sandy loam soils of the Peribonca station a fertilizer formula high in nitrogen, medium in phosphorus and potash is indicated, A formula providing moderate levels of all three ele- ments has given the best results at Luceville and Kenora. At Fort Wil- liam phosphorus give the greatest yield response, small amounts of nitrogen and potash being required. In general the response of pota- toes to fertilizer formulae was simi- lar with and without manure, but the requirement was somewhat re- duced where manure was applied. The use of strawy manure increases the need of nitrogen. For mileage 1 switched to £€ss0 extra Fill your tank with "up-to-date Esso Extra; Take your car out on the road. See for yourself its better all-round performance. Esso Extra is continually being improved to give the best balanced combination of smooth flowing power, lively acceleration and protection against engine ping and vapor-lock. For more happy motoring, switch to Esso Extra and you're always ahead! Ld the sign that says 3 to stop for guaranteed tire life with the famous Atlas Writ- ten Guarantees that's honored by over 38,000 dealers in Canada and the U.S. minum motor oil that meets' all car manufac- turers' specifications for correct lubri- cation. A detergent motor oil that not only lubricates but cleans! engine protection with Marvelube -- the pre- happy motoring with Imperial Esso Road Maps, and Imperial Esso Touring Service that routes you anywhere. Both are yours for the asking. [MORE Imperial" Esso dealers. Drop in at the Esso sign any time to have radiator and tire pres- sure checked or for any of the other services your cat may need. of the services you want await you at yout a back allowed in prototype fighters produced so far in England and the U.S.A. It also greatly exceeds the degree of sweep-back used in the first of these delta wing air- craft to appear in Britain -- the Armstrong Whitworth 52, a two-jet type with the gas turbines buried in the Wings. All these aircraft mark the steps in areonautical design aimed at making full use of the immense power which will eventually be put at the service of the aeroplane by the gas turbine in the next few years. In the U.S.A. already big contracts have been placed for the manufacture of a British gas tur- bine, the Armstrong Siddeley Sap- phire, which yields 7,200 lbs of static thrust and is expected in the course of development to give much more. Even at its present rating, it is more powerful than the aver- age rocket motor used in experi- mental aircraft. It also affords a much longer duration than the 3 to 5 minutes of the rocket. With the new generation of gas tur- bines, of which the Rolls Royce Avon and the Sapphire are leading examples, sustained flight at sup- ersonic speeds become possible; and the airframe designer has to find the best way of achieving it. Clumsy and Costly To say that supersonic flight has been accomplished is not to say that a means of giving it practical ap- plication has been found. It has so far been achieved mainly by rocket aircraft launched at great height from a parent airplane. The method is clumsy and costly. What is wanted is an aeroplane which can take off' normally from the earth | and accelerate through that diffi- | cult speed band near the speed of sound, giving the pilot full control at all speeds and carrying a load sufficient in the military or the commercial sense to make the flight worth while. Control is a necessary quality not only for the sake of safety but also for purposes of manoeuvre, whether these consist of dog fighting or of bomb aiming or of navigating, Of the loads that must be carried in bombers and fighters increasing in quantity and complexity each year, nothing need be said except that they are a constant embarrassment in an air- craft whose wings tend to get thinner and whose engines tend no longer to be hung outside the main structure. Sweeping back (or forward) the wings of the fast aeroplane is a device to reduce the drag without reducing the wing area. It means that less resistance is offered to the air but that no more life is de- manded of each square foot of the wings. It has another most im- portant function. As the wing's edge is not presented at right angles to the flow of the air, it is less apt to build up the pressure which causes the air to break away in shock waves 'at the speed of sound. It is therefore an aid to high speed. Up to the present, it has also been a menace to low speed flying. At low speed the cen- tral part of the wing has appeared to lose its lift first, whereas in nor- mal aircraft the tips stall first. Sweep-back has rightly been used with caution, and with extreme cau- tion in commercial aircraft. The Comet jet airliner, for instance, has its wing swept back only 22 de- grees, Two New Tasks Here then are two new tasks for the airframe designer. One is the task of securing control with an unfamiliar wing plan, and the oth- er is that of obtaining structure strong enough to withstand great stresses without being so heavy as to defeat its load-carrying capacity or the thinness desirable in the high speed wing. Tacked to these tasks are others of less basic im- portance but not less worrying. Cannon, for ekample, can no longer be set in the thin wing, partly be- cause there is no room for am- munition boxes, but particularly be- cause of the flexing of the wing which occurs under the heavy strains of high speed flight, Every- thing must go into the fuselage, in- cluding the engine and, possibly, guided missles. Further, the tail organs in their present form are becoming a nuisance. They have been raised high above the wing level to avoid buffeting or shroud- ing by the turbulent or deflected airflow from the wing. As the triangular wing can carry combined elevators and ailerons (called elevons) on its trailing edge IRSA SANNA Chrome wheel trim rings and whitewall tires optional at extra cost. The 's{ Mercury bas everything... to please the eye... to warm the heart The Mighty, Beautiful 1951 Mercury ; : its profile ; + » from the new massive bumper and grille to the flowing swept-back rear fenders reflects eye-pleasing beauties. The "studio-quiet" interior with the modern, long-wearing upholsteries, the distinctive instrument panel and pleasing appointments always arouse pride of ownership. Mercury provides both restful comfort and heart-warming performance. As you watch the miles go by it's obvious how seldom you say, "Fill her up". Mercury has other values + « « values your budget will appreciate year after. year. Try one drive, discover the true meaning of pleasant, economical motoring the Mercury way. There's PROVEN POWER in the MERCURY V-8 ENGINE - GRUELLING A. A. A. ECONOMY TEST WON BY MERCURY In 1950 and AGAIN in 1951, an American Mercury with Touch-O-Matic Overdrive won first honours in Class "C" in the 840 mile Mobilgas Economy Run, / conducted by the American Automobile Association. Virtually every kind of weather and road condition, ice-ridden mountain passes . . . sweltering sand-swept roads, put the car to the test. But still, the new 1951 Mercury delivered the best ton-mile gasoline economy of any car in its class. The up-to-the-minute power-packed Mercury 112 Hp, V-8 "Hi. Power Compression" engine is backed by 20 years' experience, of the world's largest manufacturer of V-type engines. This eager proven power plant provides flashing performance and exceptional economy. Your Mercury dealer will explain the many other features of the Mercury V-8 engine. "TOUCH-O-MATIC" OVERDRIVE (optional at extra cost) provides easier, more restful driving, soves up fo 20% on gasoline, cuts engine speed 24%. igkty, Sur Mortung FOR YOUR DEMONSTRATION DRIVE SEE YOUR MERCURY DEALER and perhaps can take rudders on the wing tips, it is a tempting de- | sign to develop. When aircraft of | bigger size are considered, it may North Oshawa be a highly profitable form be- Authorized Dealer BRAMLEY MOTOR SALES Dial 3-4675 Auiliorized Dealer WILLIAMS MOTOR SALES Queen St. -- Port Perry -- Phone 74