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HomeMy WebLinkAboutThe Exeter Times-Advocate, 1977-02-03, Page 11Hwy. 7 ST. MARYS Elginfield ch Kintore Tho al R • • Truss P.O. BOX 69, THORNDALE PHONE — THORNDALE 461-0130 LONDON 455-5610 PETER DAVIS 455-8235 ROOF STRUCTURES OF ALL TYPES FARM • RESIDENTIAL* COMMERCIAL a Wellburn Bryanston _o ..c ARVA Ballymote wsseitairmweserisomr LONDON ROOF ROOF TRUSS Middlesex County Rd, 27 Thorndale • Hwy, 2 Thamesford Attend Huron Tractor Equipment Show & Farming Frontiers SEE New Tractors & Equipment On Display Inside Our Modern Building And Meet The "Equipment People" *2 FILMS SHOWINGS OF FARMING FRONTIERS *THE MOST OUTSTANDING FARM ORIENTED FILM PROGRAMME, *SEE THE LATEST IN AGRI- CULTURE DEVELOPMENT AT BIGGER, BETTER and MORE FUN "WE'LL SHOW YOU HOW" EXPO 77 ENJOY IT ALL AS OUR GUEST * Door Prizes * Free Lunch BRING THE FAMILY FOR A DAY OF FUN, FOOD and ENTERTAINMENT See the latest and greatest in new equipment from Allis Chalmers . see for yourself why Allis Chalmers is the rising power in farming. SPECIAL ADDED ATTRACTION See why western corn belt farmers have ordered over 1,000,000 bags of i!s PIONEER brand seed corn. Let Jim Bryan introduce you to new methods in corn cultivation. James B. Bryan, RR 6, St. Marys, 229-8813. KIRKTON-WOODHAM COMMUNITY CENTRE FEBRUARY 17 8 p.m. 11:c MEMOVE.41. Please attend and bring the whole family E..+. air" FARM EQUIPMENT LTD. ST. MARYS 2844650 JAMES ST. S. Times-Advocate, February 3, 1977 Pap 11 Study reveals ozone level in Huron very high By D. P. ORNIROD Department of Horticultural Science , University of Guelph D. P. Ormrod, of the depart- ment of Horticultural Science at the University of Guelph, has released the findings of a test program conducted last summer to determine the degree of ozone damage which can be expected to be sustained to crops in Huron County, According to Mr, Ormrod, sen- sitive crops such as white bean, snap bean, radish, sweet corn, potato, soybean and onion "would be expected to be injured by ozone episodes". "There is little doubt," the report notes, "that ozone concen- trations in Huron County are quite frequently higher than the threshold for crop plant damage," Last summer's program was carried out using tobacco plants as the test case. Seed of four tobacco cultivars, varying wide- jo Roll up your sleeve -1r to save a life... BE A BLOOD DONOR SAVE 60% Off Mfg. List During Our Mid41fintor FURNITURE SALE Yionthrons lend ( Gabian Stone Calcium Chloride in 100 pound bags Sand & Stone Gravel Stone for , Weeping Beds EARL LIPPERT TRUCKING LTD. Crediton 234-6382 ly in ozone sensitivity, were sown in flats in a growth chamber at Guelph, Seedlings were transplanted first to 10-cm pots. The cultivars used were Bel-W3 (super- sensitive to ozone), Bel-05 (sen- sitive to ozone), Bel-BT (intermediate sensitivity to ozone), and Delhi 34 (relatively tolerant of ozone). Three plants of each cultivar were planted at each of six sites in or near Huron County, on June 16, 1976. Ozone concentration was monitored at Kippen, by the Ridgetown College of Agricultural Technology, using a Mast ozone meter and recorder, from June 3 to September 12, 1976. The record chart was used to determine daily high and low ozone concentrations. A number of ozone episodes occurred dur- ing the recording period. There were 37 days with an ozone peak concentration of 8,0 pphm or higher. The principal episodes occurred in June, early July and late August. The period from July 27 to August 19 had low ozone levels except for August 3 and 4. The ozone analyzer records indicate that ozone in- jury to sensitive species would likely occur several times during the growing season in Huron County, four on July 29 or Aug. 11. Bel-BT was injured only at sites one to three but generally not at sites four to six. The tolerant Delhi 34 had slight in- jury on July 14 and 29 at site. • .. • 2 • 1 The substantial leaf injury oh June 30 was probably the result of elevated atmospheric Ozone concentrations which continued daily from June 23 to 30. The lower injury on Bel W-3 at all sites July 14 compared to June 30 was associated with generally much lower ozone levels during the previous 10 days. Many of the injured leaves present on June 30 would be dead or abscised by July 14 and would thus not be in- cluded in the damage estimate. Similarly leaf injury on July 29 and August 11 was less than on June 30 as was ozone concentra- tion during the previous 10 days. Tobacco plants were effective monitors of ozone concentrations at six sites in Huron County in 1976. Leaf injury on sensitive cultivars was consistent with ozone concentrations obtained by an instrumental method. Based on the response of Bel-W3 tobac- co, ozone levels considerable from time to time and rather un- iform throughout the country. However, the less sensitive cultivar Bel-05 had more injury at some sites than at others. Such differential injury responses may indicate a stronger interaction of microclimate at a particular site with ozone-induced leaf injury in this cultivar. Ozone concen- trations were not sufficient to in- jure substantially the more tolerant tobacco cultivars. The test plants were set out on the farms of Adrian Vos near -------- ."1 Blyth, John Hazlitt in Colborne Township, Phil Durand, north of Grand Bend, Harry Knip just over the county line in Middlesex County, ,,Bob Allen near Brucefield and Nick White near Sea forth, Tobacco plants at each site were evaluated for the specific symptoms of ozone-induced leaf injury every two weeks. Each leaf on each plant was individual- ly evaluated and the data averag- ed, New leaves were continuous- ly produced so new sets of leaves were generally evaluated each 2 weeks. Photographs of leaf in- jury were taken occasionally. Injury to the super-sensitive Bel- W3 was extensive and roughly similar at all sites, The moderately sensitive Bel-05 was injured most at site one on all sampling dates and least at site three on June 30 and July 14. According to Adrian Vos the majority of the ozone contamina- tion is crossing Lake Huron from the United States, the result of Plan bus to meeting The Ontario Plowmen's Association Convention will be held at the Royal York Hotel, Toronto, on February 14 and 15. A United Trails coach will leave from Habkirk's Depot, Seaforth, at 7:00 a.m. on Tues- day, February 15, If required, a second bus will leave Wingham at the same time. Anyone with an interest in travelling to the O.P.A. convention to support the Huron County delegation in their presentation, should contact Alex Chesney, RR 4, Seaforth, Robert Gibson, Gorrie, of the Agricultural Office, Clinton by February 10. Cost will include a banquet ticket ($7.00) each and $6.00 each, coach fare. The bus should return back to home base by 6:00 p.m. The International Plowing Match and Farm Machinery Demonstration will be held in Frontenac County near Kingston in 1977. In 1978, this great agricultural event will be staged at Jim Armstrong's and neighbouring farms, just east of Wingham on Highway 86, September 26 - 30. r•-• 110*31 „, 6 //,i9oodicinw to IrOPP Stee/ pollution in large center's of pop- ulation throughout Michigan State. Other tests, he explained, show that ozone does not drop over the water but begins coming back to the surface over land and is effecting a 200 miles wide area of Western Ontario .. . not only Huron but also the Counties of Perth and Middlesex. Mr. Vos also noted that, accor- ding to Norman Pearson, a professor at the University of Western Ontario and a planning consultant, the development of another nuclear power generating facility in Huron could be "the last drop in the pail ," "A report by Professor Pear- son indicates that if we got such a development it would mean 000 more people through the employees, their families and the support services and in=- dustries such a development would attract," Mr. Vos points out. "Every home, every car, and every person results in more ozone. Then we would really begin seeing crop damage." 6 11.• `,/ 111 ) ...,, ..------4/.. 4 . • ' ' ) • ' •.._,,, , ,Ir-a ,..41,:rF?.......197'..11b7.-*, lt, ' "14V `,7.ek ..i..." • ::. 5 Ps, *A ./' • / This sketch map of Huron County shows the six test sites where the effect of ozone contamination was measured on tobacco plants set out by D. P. Ormrod of the department of Horticultural Science at the University of Guelph. Number one is the farm of Adrian Vos near Blyth, two is the farm of John Hazlitt in Colborne Township, three is the farm of Phil Durand north of Grand Bend, four is the farm of Harry Knip just over the county line in Middlesex County, five is the farm of Bob Allen Near Brucefield and six the farm of Nick White near Seaforth.