SWRHL-117r AGRONOMIC ASPECTS OF THE EXPERIMENTAL DAIRY FARM - 1970 by Edgar M. Daley Radiological Research Program Western Environmental Research Laboratory ENVIRONMENTAL PROTECTION AGENCY Published March 1972 This research was performed as a part of the Radiation Effects Program and was supported by the U. S. ATOMIC ENERGY COMMISSION under a Memorandum of Understanding No. SF 54 373. ------- This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Atomic Energy Commission, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately-owned rights. Available from the National Technical Information Service, U. S. Department of Commerce, Springfield, VA. 22151 Price: paper copy-$3.00; microfiche-$.95 ------- SWRHL-117r AGRONOMIC ASPECTS OF THE EXPERIMENTAL DAIRY FARM - 1970 by Edgar M. Daley Radiological Research Program Western Environmental Research Laboratory ENVIRONMENTAL PROTECTION AGENCY Published March 1972 This research was performed as a part of the Radiation Effects Program and was supported by the U. S. ATOMIC ENERGY COMMISSION under a Memorandum of Understanding No. SF 54 373. ------- ABSTRACT This is an annual report on the agronomy practices of the experimental dairy farm at the Nevada Test Site. The report includes a narrative report and accompanying tables on irrigation, fertilization, and crop production during 1970. ------- TABLE OF CONTENTS Page ABSTRACT 1 LIST OF FIGURES Hi INTRODUCTION , 1 IRRIGATION 3 FERTILIZATION 5 AGRONOMY PRACTICES . 6 a. Land Preparation and Seeding 6 b. Harvesting 6 c. Weed Control 7 IODINE EXPERIMENTS 9 MICROPLOTS " 10 COMPARISON OF SURROUNDING 11 REFERENCES 12 APPENDICES 13 DISTRIBUTION 11 ------- LIST OF FIGURES FIGURE Page 1. Location of Environmental Protection 2 Agency Facilities on the Nevada Test Site 2. Gallons of Water Applied - 1969 and 1970 4 111 ------- INTRODUCTION The Western Environmental Research Laboratory of the Environmental Protection Agency maintains an experimental research farm on the Nevada Test Site. The farm is located approximately 110 miles north of Las Vegas in Area 15 of the Nevada Test Site (see Figure 1), and is situated in a high desert valley (4,500 feet elevation). The soil is a coarse, gravelly, sandy loam with cobbles intermixed, and has a pH of approximately 8.3. Physical description and history of (1 2) the farmstead are covered in the previous reportsv ' . This is a continuing report of the agronomy practices of the experimental farm for the year 1970. It is compiled from monthly reports that are written from daily records kept by the Crop Research Helpers. These records document the practices on the farm and supply information that can be used in support of controlled release experiments or in "Ad Hoc" studies that are mounted following any accidental releases from an under- ground test or releases from reactor testing conducted at the Nuclear Reactor Development Station. ------- EXPERIMENTAL FARM NUCLEAR ROCKET DEVELOPMENT STATION I NRDS BUFFER I ZONE 5 10 SCALE IN MILES Figure 1. Location of Environmental Protection Aqencv facilities on the Nevada Test Site. ------- IRRIGATION The irrigation season runs from April through October. The total amount of water applied was 84.8 acre feet (325,850 gallons or 1,205,645 liters equals one acre foot) with an average of 5.3 acre feet per land. A land is the area between two irrigation laterals and is approximately one acre. The amounts of water applied to each land each month are shown in Appendix I. During 1969, 84.4 acre feet of water with an average of 5.2 acre feet of water per land was used. The irrigation period for 1969 and 1970 was applied in the same amounts^ . Figure 2 shows a comparison between 1969 and 1970 by months. During the past three years the amount of irrigation water applied per acre has been approximately the same each year. In 1968 5.8 acre feet were applied, in 1969 5.2 acre feet were applied, and in 1970 5.3 acre feet per acre were applied for an average of 5.4 acre feet per acre. ------- 6.OO* n> ro JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1969 GALLONS OF WATER APPLIED JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1970 ------- FERTILIZATION The two fertilizers used during 1970 were ammonium sulfate 21-0-0 and trebel superphosphate 0-45-0. Phosphorus was applied to the alfalfa in March at the rate of 144 pounds PgOg per acre (63.4 pounds of P/acre). The two grass and legume lands, 10 and 14, had 36 pounds P20^ per acre (15.8 pounds of P/acre) during the year. Lands 10 and 14 had applications of 96 pounds N and 80 pounds N, respective- ly. These amounts were made in two applications. Lands 15 and 16 had applications of 42 pounds N and 36 pounds P205 (15.8 pounds P) and Land 17 received 16 pounds N during April. Preplant applications of nitrogen and phosphorus were made on the small grain in October. Lands 15 and 16 each had an application of 73 pounds N per acre and 36 pounds P205 per acre (15.8 pounds of P/acre), Land 17 had 21 pounds N per acre and 18 pounds PgOg per acre (7.9 pounds of P/acre). The nutrients and the amounts applied to each land are shown in Appendix II. ------- AGRONOMY PRACTICES A. Land Preparation and Seeding Lands 15, 16, and 17 were enisled to a depth of 12-14 inches, disced and spike-tooth harrowed and leveled with a drag float to prepare seed beds for rye grain. Preplant fertilizer was applied in October. The amounts and types have been covered under fertili- zation. On October 9, Secale cereale, Elbon variety rye was planted. Excellent germination occurred and a thick stand was established. The rate of seeding was 100 pounds to the acre. B. Harvesting The rye grain was green chopped on March 27. This is the earliest that green chopping has occurred at the experimental farm in five years of harvesting green feed. The small grain that was utilized for green chop was Elbon rye. This is a winter hardy variety that has been used for the last four years. Harvesting of alfalfa green chop began on April 17 and continued through November 3. The harvesting season lasted a total of 221 days with production of 171.1 tons (10.7 tons per acre or 1548.4 pounds per day wet weight) on 16 acres. Appendix III shows the green chop produced during the 6 ------- months on each land. Hay production was lower this year than the preceeding year in spite of the long growing season, it was not a year conducive to alfalfa production. The average was 2.36 cuttings per acre. In previous years there were four to five cuttings. The hay produced was of excellent quality, grade U. S. No. 1 leafy alfalfa hay. Appendix IV shows the hay production per month from the hay production lands. t> The amount of hay produced was 47.2 tons on 11 acres with an average of 4.3 tons per acre. Of the 14 acres of alfalfa, 3 were utilized only for green chop and the other 11 acres were utilized for both hay and green chop. The hay is produced from stands that are four to five years old. The stands are thick and show no signs of thinning out. The alfalfa that is grown is Medicago sativa, Lahonton variety. C. Weed Control Both chemical and mechanical means were employed in the control of weeds. The mechanical control in the noncrop areas consisted of uprooting the growing weeds with a rear-mounted blade on a tractor. This was done when the weeds were two to six inches high. This method has to be repeated a number of times during the season. Two herbicides were used on the vegetable plots in the microplots. These were preplant EPTC (Eptam) ethyl di-n-propyl thiol carbomate, a selective 7 ------- herbicide and DCPA (Dacthal), a phthalic compound dimethyl ester of tetra chlorotere-phthalic acid. The herbicides gave good weed control during the season. Some hand hoeing was required in the microplots as barn yard manure had been applied to these plots in previous years which resulted in a weed infestation. During this season no manure was added and the plots are being cleaned of weeds. Along the irriga- tion laterals and fence rows chemical weed control was used. The chemicals used during 1970 were Rad-E-Cate (Cacodylic acid), Paraquat « (Dimethyl-bipyridyliumion), 2-4 Dichlorophenoxyacetic acid and diesel fuel oil. Only weed free seed is sown on the farm which keeps down the introduction of noxious weeds. None of the hard-to- control weeds such as Russian knapweed, Canadian thistle or bindweed are present. The three small grain lands, 15, 16, and 17, that were in summer fallow were disced three times during the summer to control the weeds. During the 1970 season no infestations of harmful insects occurred and no chemical insect control methods were required in the crop production area of the experimental farm. 8 < ------- IODINE EXPERIMENTS Project Washout was conducted on September 29, 1970. Land 5 was utilized for the experiment. The primary purpose of this project was to study, under controlled conditions, the efficiency of the washout process for removal of iodine in various forms by various intensities of rain. Dry I labeled diatomaceous earth and elemental iodine were generated to pass over experi- mental plots of growing alfalfa. A precipitation was generated over certain of these plots during the aerosol passage. Contamination levels, precipitation levels, size distribution of the aerosol particulates, as well as the precipitation droplets, and the deposition parameters were determined. Two groups of three cows each were used. One group was fed green chop harvested from the washout plot and one fed dry contaminated green chop to determine the milk secretion parameters. A third group, the control, was fed noncontaminated green chop. Included in this experiment was a determination of the relative T ^ in plants between the dry and washout situations. The data from this study will be used with those of previous t projects of this series as input to an exposure-dose model for the radio- iodines. Project Washout was the only experiment conducted during 1970 that utilized forage produced on the farm for other than routine feeding operations. ------- MICROPLOTS The existing irrigation system was taken out. The portable aluminum irrigation system was replaced with permanent main lines and laterals. Rain Bird "35A" adjustable heads, capable of delivering 7.5 gallons per minute at 50 PSI were installed on the laterals. By installing a bypass and hooking on to the microplots main line, it was possible to utilize the main field irrigation pump to deliver the water to the microplots. The new system gives more efficient utilization of water, time, and labor. The microplots were chisled to a depth of 12-14 inches to break up a hard pan that had developed, the field was cross disced four times then disced and spike-tooth harrowed to form a good seed bed for the small grains and vegetables that were planted. Pre-emergence herbicides were used on the vegetables. Eptam was used on the beets, peas, and black-eyed peas. Dacthal was used on Swiss chard, head lettuce, onions, and watermelons. The Eptam seemed to have ah effect on the red beets in that the beets germinated, emerged and died. The dying back appeared to be similar to "damping off" so it was not positive that the losses of the beets were due to the herbicides. Damping off is a disease of seeds or young seedlings caused by fungi. Wheat was planted on May 14. Ramona 50 was the variety planted. The wheat was harvested in August with a yield of 42 bushels (2,520 pounds) per acre. 10 ------- A higher yield probably would have been realized had the wheat been planted earlier. The alfalfa in the microplots was utilized for green chop. Samples of the grain and vegetables grown on the microplots were taken and analyzed for tritium concentration. The analytical results are shown in Appendix V. COMPARISON OF SURROUNDING AREAS The amount of green chop produced in the Moapa Valley during 1970 from an October 1 planting is: oats, 4.5 tons; barley, 5 tons; and wheat, 5.3 tons. Yield of green chop is expressed in tons per acre dry matter, as the dry weight is approximately 30% of the wet weight. A conversion of the 10.7 tons per acre wet weight gives the average dry weight of the green chop produced on the experimental farm as 3.6 tons per acre, this includes both alfalfa and small grain green chop. ' Alfalfa hay production in Southern Nevada averaged 8 tons per acre produced in six cuttings. Lahontan variety yielded 7 tons at Reno in 4 cuttings. This variety is the one that is grown at the experimental farm. Lahontan alfalfa at Knoll Creek, Elko County, Nevada (elevation 5,600 feet) during a three-year period averaged 3.1 tons per acre on three cuttings. The alfalfa production at the farm was 4.3 tons per acre on 2.4 cuttings per acre.'5'6' Farming operations at the experimental farm follow as closely as possible the recommended practices of commercial farm operations in Nevada and surrounding areas, n ------- REFERENCES 1. Daley, E. M. and D. D. Smith. Agronomic Aspects of the Experimental Dairy Farm - January 1966 - December 1968. SWRHL-63r. August 1969. 2. Douglas, R. L. Status of the Nevada Test Site Experimental Farm - Summary Report July 1964 - December 1965. SWRHL-36r. January 1967. 3. Daley, E. M. Agronomic Aspects of the Experimental Dairy Farm During 1969. SWRHL-104r. July 1971. 4. Rotison, G. D., T. A. Reeve, and H. R. Guenthner. Winter Green Chop Forage in Southern Nevada. Cooperation Extension Service, Max C. Fleischmann College of Agriculture, University of Nevada, Reno, August 1970. 5. Robison, G. D., 0. J. Hunt, B. B. Taylor, R. W. Lauderdale, and W. H. Arnett. Alfalfa Varieties and Management of Nevada, C104. Cooperative Extension Service, Max C. Fleischmann College of Agriculture, University of Nevada, Reno. pp. 2-6. April 1970. 6. Progress Report 1967-68, R38. Research Divison of Plant, Soil and Water Science. Max C. Fleischmann College of Agriculture, University of Nevada, Reno. pp. 3-10. February 1968. 12 ------- APPENDICES APPENDIX Page I. Tabulation of Monthly Irrigation 13 II. Tabulation of Fertilizer Applied to Each Land 14 III. Green Chop Production for 1970 by Lands 15 IV. Hay Production for 1970 by Lands 16 V. Average Tritium Activity in the Free Water of 17 Crops Grown on the Area 15 Experimental Farm Microplots May - August 1970 ------- APPENDIX I. Tabulation of Monthly Irrigation Irrigation: The amounts of water and the totals per month per land are expressed in acre inches of water (27,154 gallons per acre per land). Totals for the year for each land are shown in both acre inches of water and acre feet (325,850 gallons per acre feet). Lands Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 1.29 3.18 9.59 18.43 18.36 10.41 15.26 14.23 2 1.29 3.18 5.07 14.69 11.49 11.82 13.02 9.17 4.14 3 1.29 3.18 5.07 9.27 11.89 11.82 10.09 8.64 4.14 4 1.29 3.18 6.65 9.12 9.33 13.00 7.77 8.64 2.00 5 1.29 3.18 6.65 9.12 12.34 13.00 7.77 16.52 2.00 6 4.61 2.81 1.58 11.92 16.79 13.00 6.85 13.65 2.00 7 6.26 6.26 1.58 10.96 15.33 12.84 6.85 13.93 3.91 8 4.61 4.61 1.58 10.96 15.12 12.42 10.33 10.66 3.91 9 10 4.61 4.61 4.61 4.61 1.02 3.19 7.69 14.35 11.79 9.55 12.42 13.19 8.26 9.44 15.28 14.83 1.77 1.77 11 1.65 1.65 3.19 12.37 11.84 6.96 7.19 13.01 1.77 12 1.65 1.65 3.19 10.25 14.73 5.67 10.14 6.34 5.79 13 1.65 5.83 3.19 7.50 14.35 5.67 7.19 8.71 4.95 1.27 14 0.76 1.91 4.36 2.32 7.50 11.47 6.84 8.96 11.82 4.95 1.27 15 0.76 0.25 4.36 2.32 2.38 1.76 .7,23 4.95 1.27 16 0.76 0.25 0.73 2.32 2.38 1.76 7.23 4.95 1.27 Acre/ 90.75 73.87 65.39 60.98 71.87 73.05 73.06 72.40 67713 75.22 63.07 62.85 60.31 62.16 25.28 21.65 Inch Acre/ 7.56 6.15 5.44 5.08 5.98 6.08 6.08 6.03 5.59 6.26 5.25 5.23 5.02 5.18 2.10 1.80 Feet 84.83 acre feet - average 5.30 acre/feet 1019.04 acre inches - average 63.69 acre/inches ------- APPENDIX II. Tabulation of Fertilizer Applied to Each Land Fertilizer: Nitrogen applied is expressed in pounds of N. Phosphorus applied is expressed in both pounds P205 and pounds of phosphorus, the latter being in parentheses. Month Lands March 144#P205 144#P205 144#P205 144#P205 144#P205 144#P205 144#P205 (63.36#P) (63.36#P) 63.36#P) (63.36#P) (63.36#P) (63.36#P) (63.36#P) 8 144#P205 (63.36#P) 144#P205 (63.36#P) Month March Lands 10 48#N (15.84#P) 36#P20 11 12 144#P205 144#P205 (63.36#P) 13 14 15 16 144#P205 36#P205 (63.36#P) (15.84#P) 17 April June 48#N October 32#N 48#N 43#N 42#N 36#P2Og 36#P2Og (15.84IP) (15.84#P) 73#N 16#N 21 #N 73#N 36#P2°5 (15.84#P) (15.84#P) (7.92#P) ------- APPENDIX III. Green Chop Production for 1970 by Lands Green Chop: Tons per land (acre) Month Land 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Jan Feb Mar Apr* 1.60 4.60 2.60 1.80 7.00 May 8.60 7.20 3.70 2.10 2.50 Jun 3.50 7.20 7.00 Jul 2.70 4.50 6.30 4.50 Aug 3.60 3.15 6.30 5.40 3.60 3.15 Sep 1.80 4.50 0.90 2.70 3.60 3.60 2.70 2.70 2.70 4.50 Oct 1.50 3.60 4.50 3.30 0.90 0.90 0.90 0.90 3.60 0.90 0.90 Nov Dec 16 17 5.60 2.40 1.60 1.80 "OS- Iota! 171.10 tons - average 10.69 tons per acre Green chop started on March 27, 1970 through November 3, 1970. A growing period of 221 days. Total 342,200 pounds 1,548.41 pounds per day. ------- CT> APPENDIX IV. Hay Production for 1970 by Lands Hay Production: Tons per land (acre) Month Land 123456 Jan Feb Mar Apr May Jun Jul 2.65 2.82 1.65 Aug 1.50 1.40 1.38 Sep Oct Nov Dec 7 8 9 10 11 12 13 14 1.98 2.04 2.22 2.16 2.31 1.95 2.04 1.56 1.59 1.50 3.12 3.15 1.53 1.44 1.14 1.32 0.78 1.38 1.38 1.23 Total 4.15 4.22 Total = 47.22 tons Average =4.29 tons per acre Average cuttings 2.36 per acre 3.03 2.70 4.89 4.32 1.95 6.72 6.69 5.07 3.48 ------- APPENDIX V. Average Tritium Activity in the Free Water of Crops Grown on the Area 15 Experimental Farm Microplots - May - August 1970 Crop Collection Date pCi/ml Beans Beets (red) Black-eyed peas Corn (sweet) Lettuce Swiss chard Onions 5 August 1970 18 August 1970 18 August 1970 5 August 1970 5 August 1970 21 July 1970 18 August 1970 Whole 1.0 average of 3 Pods 3.2 average of 3 Tops 2.9 average of 3 Roots 1.9 average of 3 Average all parts 2.3 Whole 1.6 average of 3 Leaves 1.4 average of 3 Roots 1.4 average of 3 Average all parts 1.4 Whole Pods Tops Roots 1.9 average of 3 2.4 average of 3 1.9 average of 3 2.8 average of 3 Average all parts 2.3 Whole Ears Stalk and leaves Roots 3.4 average of 3 2.7 average of 3 1.2 average of 3 1.1 average of 3 Average all parts 2.1 Whole 1.3 average of 3 Leaves 1.3 average of 3 Roots 1.3 average of 3 Average all parts 1.3 Whole 1.7 average of 3 Tops 1.9 average of 3 Roots 1.5 average of 3 Average all parts 1.7 Whole 1.0 average of 3 Leaves 1.2 average of 3 Bulbs 1.0 average of 3 Average all parts 1.1 17 ------- APPENDIX V. Average Tritium Activity in the Free Water of Crops Grown on the Area 15 Experimental Farm Microplots - May - August 1970 cont'd pCi/ml Crop Collection Date Peas (green) Wheat 15 July 1970 Whole 3.0 average of 3 Pods 5.9 average of 3 Tops 4.5 average of 3 Roots 4.9 average of 3 Average all parts 4.6 Grain only 2.8 APPENDIX V. Average Tritium Activity in the Free Water of All Parts for the Various Crops Grown During 1969 and 1970 on the Microplots Crops 1970 Beans Beets Black-eyed peas Corn (sweet) Lettuce Swiss chard Onions Peas (green) Wheat pCi/ml 2.3 1.4 2.3 2.1 1.3 1.7 1.1 4.6 2.8 Crops ' pCi/ml 1969 Beans 7.1 Beets 1 .8 Not grown in 1969 18 ------- DISTRIBUTION 1 - 20 WERL, Las Vegas, Nevada 21 Robert E. Miller, Manager, NVOO/AEC, Las Vegas, Nevada 22 Robert H. Thalgott, NVOO/AEC, Las Vegas, Nevada 23 Thomas H. Blankenship, NVOO/AEC, Las Vegas, Nevada 24 Henry G. Vermillion, NVOO/AEC, Las Vegas, Nevada 25 Donald W. Hendricks, NVOO/AEC, Las Vegas, Nevada 26 Elwood M. Douthett, NVOO/AEC, Las Vegas, Nevada 27 Jared J. Davis, NVOO/AEC, Las Vegas, Nevada 28 Ernest D. Campbell, NVOO/AEC, Las Vegas, Nevada 29 - 30 Technical Library, NVOO/AEC, Las Vegas, Nevada 31 Chief, NOB/DNA, NVOO/AEC, Las Vegas, Nevada 32 Joseph J. DiNunno, Office of Environmental Affairs, USAEC, Washington, D.C. 33 Martin B. Biles, DOS, USAEC, Washington, D.C. 34 Roy D. Maxwell, DOS, USAEC, Washington, D.C. 35 Assistant General Manager, DMA, USAEC, Washington, D.C. 36 Gordon C. Facer, DMA, USAEC, Washington, D.C. 37 John S. Kelly, DPNE, USAEC, Washington, D.C. 38 Fred J. Clark, Jr., DPNE, USAEC, Washington, D.C. 39 John R. Totter, DBM, USAEC, Washington, D.C. 40 John S. Kirby-Smith, DBM, USAEC, Washington, D.C. 41 L. Joe Deal, DBM, USAEC, Washington, D.C. 42 Charles L. Osterberg, DBM, USAEC, Washington, D.C. 43 Rudolf J. Engelmann, DBM, USAEC, Washington, D.C. 44 Philip W. Allen, ARL/NOAA, Las Vegas, Nevada 45 Gilbert J. Ferber, ARL/NOAA, Silver Spring, Maryland 46 Stanley M. Greenfield, Assistant Administrator for Research & Monitoring, EPA, Washington, D.C. 47 Acting Deputy Assistant Administrator for Radiation Programs, EPA, Rockville, Maryland 48 Paul C. Tompkins, Act. Dir., Div. of Criteria & Standards, Office of Radiation Programs, EPA, Rockville, Maryland 49 - 50 Charles L. Weaver, Act. Dir., Div. of Surveillance & Inspection, Office of Radiation Programs, EPA, Rockville, Maryland 51 Ernest D. Harward, Act. Dir., Div. of Technology Assessment, Office of Radiation Programs, EPA, Rockville, Maryland ------- Distribution (continued) 52 Acting Dir., Twinbrook Research Laboratory, EPA, Rockville, Maryland 53 Gordon Everett, Dir., Office of Technical Analysis, EPA, Washington, D.C. 54 Bernd Kahn, Chief, Radiochemistry & Nuclear Engineering, NERC, EPA, Cincinnati, Ohio 55 Regional Admin., Region IX, EPA, San Francisco, California 56 Eastern Environmental Radiation Laboratory, EPA, Montgomery, Alabama 57 William C. King, LLL, Mercury, Nevada 58 Bernard W. Shore, LLL, Livermore, California 59 James E. Carothers, LLL, Livermore, California 60 Roger E. Batzel, LLL, Livermore, California 61 Howard A. Tewes, LLL, Livermore, California 62 Lawrence S. Germain, LLL, Livermore, California 63 Paul L. Phelps, LLL, Livermore, California 64 William E. Ogle, LASL, Los Alamos, New Mexico 65 Harry J. Otway, LASL, Los Alamos, New Mexico 66 George E. Tucker, Sandia Laboratories, Albuquerque, New Mexico 67 Wright H. Langham, LASL, Los Alamos, New Mexico 68 Harry S. Jordan, LASL, Los Alamos, New Mexico 69 Arden E. Bicker, REECo., Mercury, Nevada 70 Clinton S. Maupin, REECo., Mercury, Nevada 71 Charles F. Bild, Sandia Laboratories, Albuquerque, New Mexico 72 Melvin L. Merritt, Sandia Laboratories, Albuquerque, New Mexico 73 Richard S. Davidson, Battelle Memorial Institute, Columbus, Ohio 74 R. Glen Fuller, Battelle Memorial Institute, Las Vegas, Nevada 75 Steven V. Kaye, Oak Ridge National Lab., Oak Ridge, Tennessee 76 Leo K. Bustad, University of California, Davis, California 77 Leonard A. Sagan, Palo Alto Medical Clinic, Palo Alto, California 78 Vincent Schultz, Washington State University, Pullman, Washington 79 Arthur Wallace, University of California, Los Angeles, California 80 Wesley E. Niles, University of Nevada, Las Vegas, Nevada 81 Robert C. Pendleton, University of Utah, Salt Lake City, Utah 82 William S. Twenhofel, U. S. Geological Survey, Denver, Colorado 83 Paul R. Fenske, Desert Research Institute, University of Nevada, Reno, Nevada 84 John M. Ward, President, Desert Research Institute, University of Nevada, Reno, Nevada 85 - 86 USAEC, Technical Information Center. Oak Ridge, Tennessee (for public availability) ------- Distribution (concluded) 87 Library, EPA, Waterside Mall, Washington, D.C. 88 D. S. Barth, Director, National Environmental Research Center, Research Triangle Park, North Carolina 89 Ferren Bunker, Clark County Cooperative Extension Service, Las Vegas, NV 90 Harold Guenther, Extension Agronomist, University of Nevada, Reno, NV. 91 Gayland Robinson, Superintendent, Logandale Experiment Station, University of Nevada, Logandale, Nv. ------- |