pH optima for crop growth - Results of a flowing solution culture experiment with six species

Islam A.K.M.S., Edwards D.G. and Asher C.J. (1980) pH optima for crop growth - Results of a flowing solution culture experiment with six species. Plant and Soil, 54 3: 339-357. doi:10.1007/BF02181830


Author Islam A.K.M.S.
Edwards D.G.
Asher C.J.
Title pH optima for crop growth - Results of a flowing solution culture experiment with six species
Journal name Plant and Soil   Check publisher's open access policy
ISSN 0032-079X
Publication date 1980-01-01
Sub-type Article (original research)
DOI 10.1007/BF02181830
Open Access Status
Volume 54
Issue 3
Start page 339
End page 357
Total pages 19
Publisher Martinus Nijhoff, The Hague/Kluwer Academic Publishers
Subject 1111 Nutrition and Dietetics
1110 Nursing
1102 Cardiovascular Medicine and Haematology
Abstract Ginger, cassava, maize, wheat, french bean and tomato were grown for periods up to six weeks in continuously flowing nutrient solutions at seven constant pH values ranging from 3.3 to 8.5. All species achieved maximum or near-maximum growth in the pH range 5.5 to 6.5. However, there were substantial differences in the ability of species to grow outside this range. Ginger and cassava were the most tolerant species to low solution pH, while ginger and tomato were the only species to show no yield depression at the highest solution pH. Roots of all species at pH 3.3 and some species at pH 4.0 exhibited symptoms of hydrogen ion injury. In addition, the concentrations of magnesium in the tops of all six species, of nitrogen in the tops of tomato and cassava, and of manganese in the tops of maize at these pH values were inadequate for optimal growth. Growth depression at high solution pH was associated with iron deficiency in maize and wheat and with nitrogen and/or copper deficiency in cassava. The relevance of the present results to crop growth under field conditions is discussed. The complex interplay of plant and soil characteristics militates against precise definition of an optimum pH range for the growth of a particular crop unless the soil is also specified.
Keyword Calcium
Cassava
Chemical composition
Control of solution pH
Copper
Flowing solution culture
French bean
Ginger
Hydrogen ion injury
Magnesium
Maize
Manganese
Nitrogen
Optimum pH range
pH
Plant growth
Root weight ratio
Tomato
Wheat
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 06 Sep 2016, 12:02:40 EST by System User