Arsenical poisoning of fruit trees
There are a large number of fruit trees in the State which are suffering from an affection of the trunk and root. This trouble begins, in by far the greater number of cases, at the crown of the tree and subsequently involves both trunk and roots. The first marked symptom is an early ripening of the foilage usually followed by death about midsummer of the ensuing year. The crown of the tree is found to be girdled, the bark on portions of the trunk dead and sunken and most of the roots dead, their bark destroyed and the woody tissue discolored, usually a light shade of brown and sometimes exteriorly blackened. Soluble arsenical compounds will effect the destruction of the bark, the staining of the wood, the production of the so-called black heart and the speedy death of the tree. Arsenical sprays have been used in these orchards for a number of years. These arsenical compounds have accumulated in the soil. The insoluble arsenical compounds are being converted into soluble ones in the soil. The alkalies are the agents effeting the solution of the arsenic. By alkalies, is meant, sodic carbonate, sodic sulfate and sodic chloride. The lime salts, viz. the sulfate, gypsum, and the carbonate, do not effectively protect the arsenical compounds from the solvent action of the alkalies. Systemic poisoning may take place, by absorption of the arsenic with the nutritive solutions taken up by the feeding roots but the greater portion of the trouble appears to be from local irritant poisoning. The arsenical poisoning is, in many cases, complicated by lime poisoning. The arsenic in the arsenite of lime is more readily brought into solution than that of the lead arsenate. It is probable that the lime or marl in the soil and subsoil is also an agent acting conjointly with the arsenic in producing some of the trouble.
- OSTI ID:
- 7204841
- Journal Information:
- Colo., Agric. Exp. Stn., Tech. Bull.; (United States), Journal Name: Colo., Agric. Exp. Stn., Tech. Bull.; (United States) Vol. 131; ISSN CASTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
ALKALI METAL COMPOUNDS
APPLES
ARSENIC
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBONATES
CHLORIDES
CHLORINE COMPOUNDS
COLORADO
ELEMENTS
FEDERAL REGION VIII
FOOD
FRUIT TREES
FRUITS
HALIDES
HALOGEN COMPOUNDS
LAND POLLUTION
LEAVES
LIMING
NORTH AMERICA
OXYGEN COMPOUNDS
PEARS
PLANTS
POLLUTION
SEMIMETALS
SENSITIVITY
SODIUM CARBONATES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM SULFATES
SOILS
SOLUBILITY
SPRAYS
SULFATES
SULFUR COMPOUNDS
TOXICITY
TREES
USA