OCR Text |
Show Control Of Dodder Demonstrations Organized In Duchesne County; Alfalfa Seeds Are Areas Affected Six dodder control demon-1 strations have been established in Duchesne County, repousl Louis A. Jensen, county agent. In cooperation with Dr. F. L. Timmons, federal collaborator. Bureau of Plant Industry, Soils and Agricultural Engineering, and Glenn Baird, Extension Service Ser-vice agronomist, these demonstrations demon-strations were conducted at the farms of Tom Shisler. east of Roosevelt; Smith Johnson, Nortn Myton Bench; Louis Hardinger, South Myton Bench; Frank Monks, South Myton Bench; Nathan Na-than Allen, Pleasant Valley; and Howard Roberts, Pleasant Valley. Val-ley. The following treatments were included at each place: 60 gallons gal-lons of Richfield Weedkiller 'A' per acre; 120 gallons of Richfield Rich-field Weedkiller 'A' per acre: 120 gallons of number three stove oil per acre; 1-10 mix of Wasco Herbicide Concentrate per acre; 1-20 mix of Wasco Herbicide Concentrate per acre; and a formulation of Di-nitro in oil. Each treatment was applied on two plots 272 feet by 10 feet, with a check plot 5 feet wide between each treatment. Each cooperator pays for the cost of the chemical used. These plots will be observed closely to determine the cheapest and most effective material for Dodder Dod-der control. Dodder is a small weed which is becoming very prevalent in the alfalfa seed fields in Duchesne Du-chesne County. It is an annual plant germinating in the spring from seed produced the previous year. After it gets a few inches high, it attaches itself to the alfalfa stem growing nearby, severs its connections with its own root and lives from the nourishment obtained from the alfalfa plant, preventing it from making normal growth or producing pro-ducing seed. Infestation of Dodder is becoming be-coming so' serious in this area that in some cases alfalfa seed taken to the cleaning plants last fall had as low as 25 per cent alfalfa seed with most of the other 75 per cent being Dodder seed, Mr. Jensen said. Date , of spraying on these plots was June 20 to 23. A tour to these experimental areas was conducted the forepart of July to observe the results of the spraying. Another such tour is scheduled during August. Where the spraying was done within a few days after the hay was cut, the new growth of alfalfa was retarded slightly and as almost comparable in growth to the un-sprayed un-sprayed plots, reports Mr. Jensen. |