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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - June 26, 1973, Lethbridge, Alberta 2O THE LETHBRIDGE HERALD Tuesday, 26, 1973. Russian legumes prosper A Russian variety of legume brought to Canada more than 40 years ago is showing prom- ise as a new perennial forage crop, say two scientists at the Lethbridge Research Station. "We expect Oxley cicer milk- vetch to be grown mainly for pasture, but it has potential as a hay said Alex John- ston and Sylvester Smoliak. The crop performs well in poor, infertile soils, is useful in preventing erosion and is palat- able to both cattle and sheep. "Cicer milkvetch begins to grow about three weeks after alfalfa, but remains green much later. The hay is similar in protein content but higher in digestibility of dry matter and said Mr. Johnston. "Cicer milkvetch has not caused bloat in experimental animals although it contains a protein also found in alfalfa which has been linked with said Mr. Smoliak. The new crop is more diffi- cult to establish than alfalfa or sainfoin. Growth is restricted when temperatures drop below 68 degrees F. in the early stages V-3 seedlings develop best at temperatures near 80 degrees P. "When we grow the new crop mixed with grass we obtain the Alberta Home Insulation 324 14th St. S. Lethbridge P. A. Ross Phone 327-6386 We specialize in insulallng older existing buildings and hornet. Serving Southern Alberta and B C. for 25 Years best results when the seed is sown in alternate rows with said Mr. Johnston. "Over a four-year period, cicer milkvetch with Russian wildrye or crested wheatgrass yielded about 2.8 tons of hay per acre and about 1.8 tons when grown alone. Alfalfa alone produced about 3.2 tons of hay per acre." At one site the new crop yielded as much as 4.7 tons of hay per acre; however, the av- erage yield was between two and three tons per acre, Mr. Smoliak says. "Occasionally cicer milk- vetch outyielded alfalfa, espe- cially when alfalfa suffered pocket gopher he said. "Germmation of cicer milk- vetch is often poor because of the high hardseed content. Theiefore, we scarify or scratch the seed coat to permit air and moisture penetration. The seed must also be treated with an Astragalus bacterial Mr. Smoliak said. The variety Oxley was li- censed for sale in Canada in 1971 and seed released to the Canadian Forage Seed Project for increase and distribution. TRACTORS 5020, dual wheels, cab, dual hyd. 4020, 18-4-34, cab, piston sleeve kit 1-JD 4010 RC diesel, P-S kit 1-JD 3010 RC diesel P-S kit 1-JD 83O, 18-4-34 1-JD 830, 18-4-34 1-JD R Diesel 1-JD G RC gas 1-Case 1030, cab, dual hyd., PTO, tires 1-Case 1030, cab, dual hyd., PTO, 30" tires, new P-S kit A row crop M row crop, hyd. wide P up, new P-S kit 1-IHC 706, cab, overhauled motor, 7OO D tires 1-IHC 806, cab, dual RC tires, PTO, tr. overhauled t-MM G1000, cab, new cab cooler, overhauled D., NS rings, PT 1-Versatile 1OOO FWD, cab, hyd. 1-MF Super 95, cab, PS, fair tires 1-MH 555 gas, good tires, hyd. 1-AC XT-90 W-HD loader HARVESTING AND BALING BALERS 214T baler w-hyd. tension 1-NH 271 haylmer 12 baler engine 1-JD 24T baler SWATHERS 1-JD 190 type 1-JD 290 pull type 1-JD 215 SP 16' 1-JD 780 SP 15' 1970 1-IHC 161 SP 16' COMBINES 1-JD 95 hi-profile, 18' table, PS, elec. control 1-JD 95 lo-profile, 16' table, PS, re- built engine, chopper 1-MF 510, cab, chopper, spreader, pickup 1-JD 55 630 Canadian spec. MISCELLANEOUS MACHINERY Melroe 35' hyd harrow 14' pickup reel 18' pickup reel Edwards 28' rodweeder JD 1200 16' tiller Morris B2-36 rodweeder multiplex Noble 14' blada Mayrath auger, less motor 1-Heath Beet Topper on loader, grapple fork, wide bucket loader 1-JD 228F chisel plow, wing lift 1-JD Beet Thinner 4 R PM 1-JD Beet Thinner 6R FM GREEN POWER LTD. BURDETT Phone 833-3811 TABER Phone 223-2139 APHID VIRUS CAN HURT CROPS By DR. A. M. HARPER Entomologist Lethbridge Research Station In Southern Alberta there are three main species of aphids on grain; the English grain aphid, the oat bird-cherry aphid, and the corn leaf aphid. These aphids may cause damage to the plants by direct feeding but they usually cause most damage by transmitting a virus that causes a disease called red leaf in oats and yel- low dwarf in barley. The occurrence and intensity of the disease depends on the factors that influence the build up of populations of aphids. Damage caused by the virus depends on the age of the plants when they become in- fected; young are the most severely damaged. NOT HIGH Because populations of these aphids usually do not reach high levels in Alberta until late in the growing season, the crops that are most severely damaged are oats and barley planted in late July for fall pas- ture. Damage occurs mainly in the area east of the foothills be- tween Calgary and Fort Mac- leod. Barley yellow dwarf and oat red leaf were more severe on barley and oat cover crops in Southern Alberta in 1972 than at any time since surveys started in 1969. At the Lethbridge Research Station there have been at- tempts to find how much dam- age the aphids and the virus cause to oats and barley. Li greenhouse experiments where moist u r e, temperature, soil fertility, and seeding rate were kept uniform, oat bird- cherry aphids carrying the vi- rus reduced the forage dry weight of Victory oats by 66 per cent and Betzes barley by 55 per cent. JThe affected oats were snorter and with narrow- er leaves. The barley was also shorter and had fewer steins. In the Claresholm area in 1972, the virus transmitted by the English grain aphid re- duced the yield of Grizzly oats by 14 per cent. In the same area, the corn leaf aphid, which prefers barley over oats, trans- mitted the virus to 100 per cent of the barley but to only 39 per cent of the oats. The forage yield of the barley was 34 per cent less than that of the oats. Infested In most years, English grain aphids occur in varying num- bers on heads of ripening wheat. Control of these aphids has not been considered neces- sary because the populations, which are usually low, de- crease rapidly as the grain ripens. In 1972, however, a field of soft white wheat in the milk and early dough stage was found to be infested with up to 300 grain aphids per head. This high population provided the opportunity to study their ef- fect on yield. Experimental plots of the in- fested wheat were sprayed win an insecticide that controlled the aphids and other plots were left unsprayed. Although the aphid population in the un- sprayed plots dropped to near zero within 10 days, it was found that the kernel weight of the harvested gram was eight per cent lower than in the plots where the aphids had been con- trolled. If a heavy infestation ap- pears on wheat heads prior to the early dough stage, control should be considered. STOCK RACKS Easy loading and unloading. Approximate weight, 450 Ifai. One man can put them on and off in 3 minutes. No hold downs required. This rack features two-way patented tail gate. Opens right or left on swing principle and has lift gate for ease in chute loading or unloading. A rancher's best friend. Available at all Southern Alberta Co-op Stores GERRY'S TRADING POST, FORT MACLEOD VERN ARNOLD, FOREMOST and at the plant CLINT'S EQUIPMENT, CARDSTON CLINT'S EQUIPMENT LIMITED IN CANADA BY CANADIANS" CARDSTON, Alberta Phone 653-3534 ;