Sulfur effects on cotton cultivars grown in a greenhouse1

Autor:	Richard J. Mahler
Rok vydání:	1989
Předmět:	Inceptisol biology Physiology fungi food and beverages chemistry.chemical_element engineering.material biology.organism_classification Sulfur Fiber crop Horticulture chemistry Loam Botany Shoot engineering Dry matter Cultivar Agronomy and Crop Science Malvaceae
Zdroj:	Journal of Plant Nutrition. 12:187-206
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904168909363945
Popis:	Twenty cotton (Gossypium hirsutum L.) cultivars were grown for 60 days in a greenhouse on Keo silt loam soil (coarse‐silty, mixed, thermic Dystric Fluventic Eutrochrept) low in available sulfur (S). Sulfur (CaSO4.2H2O) was applied at rates equal to 0, 30 and 60 mg kg‐1 soil. Total dry matter of shoots, total S concentration in tissue, S uptake expressed in mg S plant‐1 and the N/S ratios were evaluated. The addition of S prevented S deficiency in the plants and significantly increased dry matter yields. Shoot weight increases of all cotton cultivars were associated with increased S concentration and S uptake, and a decrease in N/S ratios. Minimum S concentration and N/S ratio in cotton plants for maximum dry matter weights were 1.8 g S kg‐1 and 13.0, respectively.
Databáze:	OpenAIRE
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