Interactive effects of sodium chloride, sodium sulfate, calcium sulfate, and calcium chloride on snapbean growth, photosynthesis, and ion uptake

Autor:	J. J. Jurinak, S. Awada, W. F. Campbell, M. A. Khan, Lynn M. Dudley
Rok vydání:	1995
Předmět:	Physiology Sodium fungi food and beverages chemistry.chemical_element Calcium Inorganic ions Chloride Salinity chemistry.chemical_compound chemistry Botany Sodium sulfate medicine Leaching (agriculture) Sulfate Agronomy and Crop Science medicine.drug Nuclear chemistry
Zdroj:	Journal of Plant Nutrition. 18:889-900
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904169509364946
Popis:	Excessive sodium (Na) accumulation in soil, which can be a problem for production agriculture in arid and semiarid regions, may be ameliorated by calcium (Ca). The mechanisms of Ca amelioration of Na stress in plants have received much more attention than has the effect of the anion of the Ca salt. Our objective was to determine the relative effects of the chloride (Cl‐) and sulfate (SO4 2‐) anions on Ca amelioration of Na stress. We exposed Phaseolus vulgaris L., cv. Contender seedlings growing in 1‐L styrofoam pots under greenhouse conditions to sodum chloride (NaCl) or sodium sulfate (Na2SO4) at concentrations of 0, 15, 30, 45, and 60 mmol/L combined with either 15 and 30 mmol/L of calcium sulfate (CaSO4) or calcium chloride (CaCl2). Plants in each styrofoam pot were irrigated with 300 mL of salt solution (leaching fraction = 0.25) every fourth day for four weeks. Increasing Na concentration decreased shoot dry weight, number and weight of pods, and number of nodules. The photo‐ synthesis rate...
Databáze:	OpenAIRE
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