Soil-pot tests with iron-deficiency susceptible soybeans and other plants to determine effectiveness of iron chelates in plant nutrition

Journal Article · Thu Jan 01 04:00:00 EST 1976 · Commun. Soil Sci. Plant Anal.; (United States)

DOI:https://doi.org/10.1080/00103627609366605· OSTI ID:7347551

Wallace, A; Mueller, R T; Alexander, G V

The Fe-inefficient PI54619-5-1 soybean (Glycine max L.) is useful in the assessment of effectiveness of Fe-containing chemicals for the correction of Fe deficiency in plants. For routine tests, germinated seedlings are transferred to 500-g quantities of a calcareous soil and the Fe amendments are added in soluble form. Most information is obtained when soils of two different pH values are used such as pH 7.3 and 8.2 each /sup +/- 0.3. Nitrogen at 100 to 200 ppM of soil and as NH/sub 4/NO/sub 3/ is also applied. Responses are apparent within 3 to 5 days and leaf analyses are made after about 2 weeks. The addition of 1/2 percent MgCO/sub 3/ or less with thorough mixing into noncalcareous soil has resulted in Fe deficiency not only for this soybean variety, but also for other plant species. An experiment of six replications x 2 soil pH x 7 treatments = 84 pots allows for reasonable statistical evaluations of yields and mineral composition of leaves. A visual comparison of leaf color is recorded and yields of shoots are determined. Analytical data for micronutrients and P, K, Ca, Mg, and Na are obtained by emission spectrography and these are useful in the interpretation of results when computed upon both a percent of dry weight or per plant basis. Useful compounds are effective at 2 ppM Fe or less in the soil. Tests with bush beans (Phaseolus vulgaris L. var Improved Tendergreen) which are efficient in Fe uptake are useful also because comparison can be made without complications due to differences in plant yields.

• Research Organization: Univ. of California, Los Angeles
• OSTI ID: 7347551
• Journal Information: Commun. Soil Sci. Plant Anal.; (United States), Journal Name: Commun. Soil Sci. Plant Anal.; (United States) Vol. 7:1; ISSN CSOSA
• Country of Publication: United States
• Language: English

Related Subjects

553000* -- Agriculture & Food Technology
60 APPLIED LIFE SCIENCES
BIOLOGICAL EFFECTS
BIOMASS
CHELATES
COMPLEXES
ELEMENTS
ENERGY SOURCES
FOOD
IRON
IRON COMPLEXES
LEGUMINOSAE
METALS
NUTRITION
NUTRITIONAL DEFICIENCY
PH VALUE
PHASEOLUS
PLANTS
RENEWABLE ENERGY SOURCES
SEEDLINGS
SOILS
SOYBEANS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
VEGETABLES