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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - March 6, 1973, Lethbridge, Alberta 12 THE LETHBRIDGE HERALD Tue.doy, Morcti 6, Food booklets guide consumer to best value Agriculture Canada has sev- eral publications to help the consumer gel the best value for her food dollar. Available free from the Ag- riculture Canada Information Division, Ottawa KIA OC7, are: Your Food Dollar (No. Buy by Grade (No. Food Grading in Canada (No. and Farming ami Food Costs in Canada (Farm Letter No. Available from ilnfarnialUm Canada, 171 Slater St., Ottawa KIA OSS, or federal govern- ment bookstores across Canada is the Consumer Cost Calcula- tor, which sells for 75 cents. Farmers nitrogen By DIl. J. B. BOLE Plant nutritionist Research Station Concern about the acidifying effect of the ammonium forms of fertilizer nitrogen On soil is increasing in many agricultural CLEARING OUT FOR SPRING J.95 WOOLEN BONDED ACRYLICS T-SHIRT MATERIAL COURTELLES, FORTRELS, CR1MPKNITS, POLYESTER JERSEYS 408 5th St. 5. Phone 32A8877 STORES Corner 3rd Ave. and 8th St. S. Phone 327-8543 FRONT END ALIGNMENT Firestone Riding System ..Service specialists will carefully align both front wheels, plusclieck your balance, brakes, shook absorbers, battery and muffler. Torsion Bars and Air Conditioning Extra, LIFETIME SUPREME BATTERY Guaranteed until you trade your car! pondering soil effect areas m Canada. Fortunately, this concern is not likely to be justified in prairie soils. Nitrogen may be supplied to crops either as nitrate or as ammonium. Ammonia urea Mfi-0 0 and. ammonium sulfate (21-0-0) are, common fertilizer sources of nitrogen. Ammonium nitrate (34-0-0) supplies nitrogen In both forms. Fertilizers contain- ing only the nitrate form of nitrogen are not common in Western Canada. Microorganisms in the soil change ammonium nitrogen to nitrate nitrogen. The hydrogen ions released in the process c a u s e an increase in soil aciditv. This acidity is .mea- sured in terms of the hydrogen- ion concentration in the soil and is expressed as pH. A neutral soil has a pH value of 7. TjOwer values' indicate acid- ity; higher values indicate a ba- sic, or alkaline, condition. Even when ammonium is absorljed by plant roots tlic plant must give off hydrogen ions to main- tain its electrical balance. Ni- trate nitrogen docs not undergo a chemical trans formation that releases hydrogen and so does not increase soil acidity. When plants take up nil rates the soil pH increases. In humid regions acid soils develop independently of fertili- zer application. The acidity in- creases as the native lime is gradually leached from the soil profile and the protein from plants, animals, and animal wastes decomposes to form am- monium nitrogen, the effect be- ing the samp as when fertilizer ammonium is applied. Thus, the pH of the soil in the Peace Bivcr region if Al- berta ranges from 5.5 to G.5, wliereas in tire Edmonton-Cal- gary area it ranges from 6 to 7 and south of Calgary from 0.5 to 7.5. Alberta has five to 10 million acres of soils with a pH if less than 6, much of it in the Peace River region and east of Red Deer and some in isolated areas of the foothills and mountain regions. Adding lime to these soils would produce marked in- creases in yields of alfalfa smaller ones in less sensitive crops such as rape and barley. Unfortunately, tlie application of lime is not yet economically feasible in Alberta. At' the Lethbirdge Research Station we have found that pH may drop from 7.3 to 5 in the immediate vicinity of an am- monium fertilizer band. When 200 pounds of nitrogen per acre are applied the acid zone may extend two to three inches from the band. Higher rates can lead to a temporary acidification of the entire surface soil and would cause serious problems in soils with a pH ot 6.2 or lower. For- tunately, prairie contain native calcium carbon- ate (lime) to, neutralize any acidity. Their soil particles and organic have a.re- markable. capacity to absorb hydrogen'ions..-; We have riot found any differ- ences at LcthbrMge and other prairie locations in response to the various fertilizer nitrogen sources. The cost per unit of ni- trogen should be the factor gov- erning the form of nitrogen to use. Only where a soil test in- dicates that soil pH is below 6.2 s h o u 1 d a farmer consider paying a bonus for the nitrate form of nitrogen fertilizer. Pesticide research The method of pesticide ap- plication can be as important as the choice of the-chemical, what it does and where it ends up In the environment. Studies at the Saskatoon, Sask. Research Station arc con- centrating on studying methods of applying chemicals. The aim of the research Is to use as little herbicide as pos- sible, with all of it remaining in the target area a max- imum amount on the weeds and a minimum on the crop. EEEEK-K SAVINGS WERE NEVER GREATER ON THESE GOODWILL USED CARS AMD TRUCKS 1972 CHEV. 1MPALA 4 dr. sedan, Low, low miles I 1970 G.T.O. JUDGE [Lathed, 1969 CHEV. 'Vi-TON 350 V8, oulo, OOQQ radio, custom cob "T 7WV 1968 FORD RANCHWAGON V8, auto; P.S., P.E., 1967 G.M.C. V4-TON 6 cyl., 3 spd., radio 1966 CHEV 6 cyl., radio. MOTORCYCLE CLEARANCE NEW 1972 HODAKA SUPER RAT with light kit New CLEARING 1972 HODAKA SUPER RAT With light kit Slightly ujed...... B R SERVICE CARDSTON PHONE 653-3672 ;