Effect of artificial rain water pH and calcium concentration on the calcium and potassium in apple leaves
Trees of seedling apple (Malus domesticas borkh.) received 2.5 cm of artificial rain at pH 3.3 or 4.2, each with 0.4 or 1.4 mg Ca/liter of rain water during 7-hour periods. In the early summer period (June 19-July 10) artificial rain reduced Ca in apple leaves, but there were no significant differences due to pH or Ca concentration in the rain. Ca losses during rain treatment appeared to be recovered during 1 week holding periods after treatment. In the autumn period (September 25-October 16) the reduction in leaf Ca was greatest wih low pH, low Ca rain and least with high pH, high Ca rain, which increased Ca in the leaves. K in the leaves was reduced more than Ca, but was not affected by pH or Ca in the rain during either period of observation.
- OSTI ID:
- 5774252
- Journal Information:
- HortScience; (United States), Journal Name: HortScience; (United States) Vol. 14:6; ISSN HJHSA
- Country of Publication:
- United States
- Language:
- English
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Effects of acid rain on apple tree productivity and fruit quality
Related Subjects
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54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
ALKALI METALS
ALKALINE EARTH METALS
APPLES
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL EFFECTS
CALCIUM
ECOLOGICAL CONCENTRATION
ELEMENTS
FOLIAR UPTAKE
FOOD
FRUIT TREES
FRUITS
HYDROGEN COMPOUNDS
LEAVES
METABOLISM
METALS
NUTRIENTS
OXYGEN COMPOUNDS
PH VALUE
PLANTS
POLLUTION
POTASSIUM
RAIN
RAIN WATER
SIMULATION
TREES
UPTAKE
WATER
WATER POLLUTION