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Gordon Arrowsmith, one of à- ' 118VI 1VUI uttu - - association with John Fletcher of the Town of Newcastle, seven top referees i Canada, was BiiBramah's Ontairio Port Ryerse is a place of quiet charm, nestled i along Lake Erie's north shore.- Theres a little white church and a general store and somne nice houses. Thats about ail there is on main street. But up on a hill overlooking the village is a big greenhouse complex that Was the first i the country 10 use "bio-mass" heaig i growig greenhouse vegetables. That's iisig natural substances like corn cobs, peanut shelîs, sawdust and such to heat the 28,000 square feet under glass. Farmer Dave Smith of whats called Ryerse Farm Market began usig die organic fuel 10Oyears ago. Sice then, hundreds of agricultural students have corne 10 see iî in action. Smith doesnt have any hi-tech equipment. The heatig machinery was made right at the farm. If '.omething goes wrong, theres no- service company to fix it. He has t0 figure it ont himself. It looks somewhat primitive but it sure works. The organic material gathered for fuel is first screened to remove rocks and so forth. Then il goes to a revolving hopper which creates a , -is,ý. that's taken by an elevator over to a fiery'furnace. The heat joes to a large boiler and the steamn pressured mbt pipes that run tliroughout the hot houses. The vegetables, mostly tomatoes and lettuce, are grown hydroponicalIly. That is, in water. There's flot a scrap of earth in the whole complex. The tommtes are red, round and juicy, and there is a greenhouse of what Dave calîs' "livig lettuce". Itfs pulled up fromn the watery bed, roots and all, put i packages, shipped and will sîay fresh for nine days. Dave began recycling for heat for several reasons. "Farmers traditionally have had to -be very efficient and conscious of the environmient because it's their livelihood,' he said. "And it makes sense thal a source of heat cornes from a renewable resource. 3esides, when you operate year- round as we do, you have 10 think of fuel economy." Dave took us mbt one greenhouse he calîs his "foolin' around house." It's experimental. When we wçre there, he was trying to grow beans using hydroponic methods. The students who visit are interested in ail of the farms experimental features. "But leî's face il," smiles Dave, "it's mainly because of the heat." Walleye spawning in the Kawartha Lakes When water temperatures start 10icrease and ice begins to leave the lakes in late March and April, it's walleye spawning limne in the Kawarthas. Walleye, also known as yellow pickerel, use both fast-water areas and shoreline shoals in most lakes in this area. For example, some fish from Pigeon, Buckhomn, and Chemung Lakes spawn on the rock rubble below the dam in Bobcaygeon,-while others use rubble areas along the east shore of Chemungor in the north end of Pigeon. BaIsarn Lake walleye make extensive use of shoreline rubble scattered around the lake, but spawn as well at the fasî-water area downstreamn of the dam at Coboconk. There are several spawning shoals a"round the shoreline and off the islands of Rice Lake, but many waileye in this lake spawn in the turbulent waters below the dam at Lock 19 in Peterborough. Thie large population of walleye in Lake Scugog use shoreline shoals exclusively as there are no fasî-water areas present ithe lake. Walleye migrate long distances t0 spawning areas. Three fish followed in a radio-tracking study moved 14 kilometers from Buckhorn Lake.10 Bobcaygeon. One of these fish only stayed one day before returning 10 Buckhorn Lake twith a return travel timne of less than a day and a haîf. In the same study, a walleye that was radio-tagged i Pigeon Lake swamn to the fast-water area at Bobcaygeon but left after two days and moved il kilometers to the Squaw River. The Rice Lake walleye which spawn at Lock 19 i Peterborough make a 32 kilomneter journey up the Otonabee River from the lake, and then mnake the same journey in reverse after the spawning season is complete. In lakes with walleye that spawn ai both fast-water and shoreline shoals, spawning occurs first along the shorelines where the water temperatures warms early. Almost, as soon as ice starts to leave the lake edge, and after the temperatures reach approximately 5 degrees C (41 degrees F) walleye begin 10 spawn in the band of rubble along the shore. Spawning i fast-water areas such as those downstreamn from damns starîs one or two weeks later, once water temperatures in the flowing water have warmed. It also appears that shoreline shoal spawners use shoals each year, and that fast-water spawners are loyal 10 the fast-water. Fish using fast-water areas do not spawn on shoals, and conversely shoal spawners do flot use fast- water. Walleye deposit eggs in the spaces between rocks in areas of rubble and coarse gravel. Eggs incubate for 12 10 18 days, depending on the water temperature. Afîer hatching, the walleyefry swim up out of the rubble and are carried downstreamn by the flowing water i fast-water areas, or out into the lake by wave action at shorelie spawning sites. The fry feed on their yolk sac for several days before starting to prey on the tiny invertebrates found in the water column of lakes and nivers. Male waileye in the Kawarthas mature beginning at three or four years of age, and most fish observed spawning are beîween six and eight years old. The average weight of spawning maies is 750 gramns (1.7 pounds). The larger, faster growing femnales don't start 10 mature until they are four 10 five, and the average age of spawning femnales is also between seven and nine years. Most spawning females weight approximatelv 1300 grams Orono Weekly Times, Wednesday, May 1, 1991-13 (2.9 pouinds) and proQuùçe 80,N0Q to 160,000 eggs. With such a high number of eggs produced by each femnale walleye, the estimnated «Îir W~btb potential egg deposition at a popular spawnilg site such as Lock 19 in Peterborough can be greater than 500 million eggs in somne years. During and after spawning, walleye eggs and fry are completely lsac pin dependent on the characteristics of applications for the spawning material for their HAIRSTYLIST survival. In order to maintain theatorlcin healthy, naturally reproducing torlcin walleye populations we have i the Main St., Orono Kawarthas, it is essential that this 983-5333 crilical habitat be protected. The areas of rock rubble and coarse gravel i the fast-water areas and around the shorelines of the ____________ Kawartha Lakes are crucial for the survival of walleye, which are the Control you most sought-after gamne fish in Ontario. Successful natural cndeedon reproduction will ensure the future of the, walleye fishery in the Kawarthas. For ibore information contact: Kawartha Lakes Fisheries Assessment Unit, Ontario Minstr Weed Spraying of Natural Resources, Lindsay - Fob Grass District, phone 705-324-6121. -Inet Spaing Millbrook Provincial -PIug Coraeration Fishing Area Stocklng The Millbrook Provincial Program available Fishing Area ponds will again be for the season. stocked with catchable rainbow trout for the opening of troul See the Difference season, April 27th. The ponds will Quality Makes! be stocked on a weely basis from the opening until mid-June. Approximately 2,500 trout wil be stocked in total. Funding for this project is provided lhrough the resident sport fish licensing program. Anglers are remninded that the daly linit is 5 flsh per person and 983-5598 anglers fromn the ages of 18 to 64 (rnNwate years of age require a sport fish (rnNwate licence. ORONO FUEL & LUMBER LIMITED P.O. Box 180, Station Street Orono, Ontario LOB 1 MO ALISTAIR ROZARIO FREE ESTIMATES Teiephone: (416> 983-9167 Residence: (416) 983-5344 C H RUS Div. of M.C. Equip ment Carpet Cleaning Services 34.9 Iprofessî0nall Stem Iean Uivingmom Diningroom -Scotchguard and Car Interior Steam Cleaning available -Stairs $1 .00 per stop -Upholstoring Cleaning For A Freo Estimate Cali Oshawa 576-3328 W. Accept VISA