LEAF ANATOMICAL AND NUTRIENT CONCENTRATION RESPONSES TO NITROGEN AND SULFUR APPLICATIONS IN POINSETTIA

Autor:	M. Elizabeth Conley, Ellen T. Paparozzi, Walter W. Stroup
Rok vydání:	2002
Předmět:	chemistry.chemical_classification biology Physiology chemistry.chemical_element engineering.material biology.organism_classification Sulfur Nitrogen Green leaf Horticulture Human fertilization Nutrient chemistry Botany engineering Fertilizer Essential nutrient Agronomy and Crop Science Poinsettia
Zdroj:	Journal of Plant Nutrition. 25:1773-1791
ISSN:	1532-4087 0190-4167
DOI:	10.1081/pln-120006057
Popis:	Today the many varieties of poinsettia available for production-dates printpubdate="07/01/2002" are typically designated as one of two types: dark leaf vs. green leaf/light leaf types. Research has shown that dark leaf varieties require less fertilizer than green leaf types. The objectives of this research were to evaluate the effect of varying nitrogen (N) and sulfur (S) fertilizer applications on leaf anatomy, essential nutrient elements, and the growth and development of a dark leaf variety of poinsettia. Vegetative “Freedom Red” poinsettias were grown in a soilless mix following a typical production-dates printpubdate="07/01/2002" schedule except for fertilization. Plants received N at 50, 100, 200, or 275 mg L−1 in combination with S at 0, 12.5, or 25 mg L−1. Visual observations of plants indicated that “Freedom Red” poinsettia responded differently to various application rates of N and S. Plants inferior in size, form, and color were produced when S was applied at rates of 0 mg L−1 in combi...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5a7f04acd5de2f763b84928816ed899a https://doi.org/10.1081/pln-120006057 Zobrazit plný text záznamu