Document Details


Title:
FALLOUT RADIATION EFFECTS ON LIVESTOCK PART A AND FOOD CROPS PART B ANNUAL REPORT NOVEMBER 1, 1968 TO OCTOBER 31, 1969
Subject Terms:
FALLOUT; CATTLE; CROPS; CIVIL DEFENSE; YTTRIUM 90; CERIUM 144; PRASEODYMIUM 144; ANIMALS; STRONTIUM 90; GRAPHS; ZINC 65; SELENIUM 75; MANGANESE 54; IRON 59; COBALT 60
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1970 Dec 31
Declassification Status:
Unknown
Document Pages:
0079
Accession Number:
NV0060492
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
SHEEP FED YTTRIUM-90-LABELED FALLOUT SIMULANT AT THE RATE OF 2.5 MILLI CI/KG TO SIMULATE 7 PERCENT FORAGE RETENTION DEVELOPED ANOREXIA, DIARR HEA, AND WEIGHT LOSS. FEED INTAKE OF THE SURVIVORS USUALLY RETURNED T O NORMAL WITHIN 60 DAYS. BETA IRRADIATION OF 57,000 RADS TO THE DORSU M OF SHEEP, EQUIVALENT TO 12 PERCENT OF THE BODY SURFACE, SEVERELY AFF ECTED THE SKIN AND REDUCED BODY WEIGHT BY 15 PERCENT WITH NO REDUCTION IN FEED INTAKE. WHOLE-BODY GAMMA IRRADIATION OF 240 R AT 1 R/MIN AFF ECTED ONLY THE PLATELETS AND WHITE BLOOD CELLS WITH NO MORTALITIES. T HESE THREE TYPES OF IRRADIATION GIVEN SINGLY HAD LITTLE EFFECT ON MORT ALITY BUT WHEN THE THREE WERE COMBINED, 4 OF 8 SHEEP DIED WITHIN 60 DA YS. IN ADDITION TO MORTALITY LOSSES THE LOSS OF WEIGHT WOULD SEVERELY AFFECT THE PRODUCTIVITY OF ANIMALS EXPOSED TO THESE LEVELS OF FALLOUT . PRELIMINARY DATA ON CATTLE INDICATE THAT THE COMBINED RADIATION INS ULTS WOULD BE MORE DETRIMENTAL TO CATTLE THAN TO SHEEP. GAMMA RAY SEN SITIVITY FOR MAJOR CROPS WAS AS FOLLOWS: WINTER BARLEY = WINTER WHEAT LESS THAN CORN LESS THAN SOYBEAN LESS THAN RICE. SEEDLINGS OF BARLEY AND WHEAT WILL TOLERATE APPROXIMATELY 1 KR, CORN APPROXIMATELY 2 KR, S OYBEAN APPROXIMATELY 4 KR, AND RICE APPROXIMATELY 25 KR. MAXIMUM YIEL D REDUCTION OCCURRED IN CORN IRRADIATED FROM 14 TO 48 DAI (DAYS AFTER EMERGENCE), IN WINTER BARLEY FROM 175 TO 200 DAE, AND IN WINTER WHEAT FROM 150 TO 200 DAE. YIELD REDUCTION IN SOYBEAN WAS MAXIMAL AT EARLY SEEDLING STAGES AND DURING EARLY BLOOM. IN THE MONOCOTYLEDONOUS PLANT S SENSITIVITY TO GAMMA RAYS IS GREATEST DURING THE PERIOD OF APICAL TR ANSITION AND EXTENDS THROUGH THE PERIOD OF REPRODUCTIVE PRIMORDIAL DEV ELOPMENT. IN THE ONE DICOTYLEDONOUS SPECIES STUDIED, RADIOSENSITIVITY WAS RELATED TO THE EARLY POSTEMERGENCE STAGE AND DURING THE PERIOD OF EARLY BLOOM.


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