Evaluation of sulfur containing amendments for soil crusting, seedling emergence of tomato and DTPA extractable micronutrients
Issue Date
1992Keywords
Agriculture, Agronomy.Advisor
Bohn, Hinrich L.Metadata
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The University of Arizona.Rights
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.Abstract
A greenhouse experiment was conducted to evaluate the effect of five amendments (H₂SO₄, Al₂(SO₄.18H₂O, FeSO₄.7H₂O, and CaS₅ and CaSO₄.2H₂O) on crust formation, seedling emergence, dry matter yield (DMY) of tomato and soil properties in a sodic soil from the Safford Agricultural Center. When applied in equivalent quantities (600 kg/ha S), sulfuric acid and Al-sulfate proved to be the best anti-crusting agents and gypsum the least. Tomato seedling emergence and DMY increased with addition of H₂SO₄ followed by gypsum. Sulfuric acid was superior in reducing ESP in 0-3 cm depth, while EC was increased with additions of all amendments. In 3-8 cm depth the amendments affected pH, EC and ESP less than at the 0-3 cm depth. DTPA extractable and plants concentrations of Zn, Fe and Mn significantly increased with the addition of various amendments, while Cu was not effected by any amendments.Type
textThesis-Reproduction (electronic)