WATER QUALITY AFFECTS CALCIUM AND MAGNESIUM REQUIREMENTS FOR AZALEA GROWING MEDIUM

Autor:	D. A. Wall, E. W. Bush, M. L. Robbins
Rok vydání:	1991
Předmět:	Agronomy chemistry Magnesium fungi Environmental science chemistry.chemical_element Water quality Horticulture Calcium Azalea
Zdroj:	HortScience. 26:496c-496
ISSN:	2327-9834 0018-5345
Popis:	Calcium and magnesium medium requirements were investigated for the production of container-grown `Formosa' azalea irrigated with filtered and unfiltered deep well water. Four inch `Formosa' azalea plants were planted into 3.8 liter containers filled with an amended 4:1(v,v) pinebark:sand growing medium. Calcium and magnesium treatments were supplied by either dolomitic lime or gypsum + epsom salt at three rates. Plants irrigated with good quality water produced excellent quality plants regardless of Ca/Mg treatment. Alkaline well water containing moderate sodium levels inhibited azalea root growth. Medium amended with gypsum + epsom salt produced significantly better quality plants than did medium with dolomitic lime during 157 days of deep well irrigation. Medium pH and Na levels were significantly higher in the control treatment than in the filtered well water treatment. Growth effects of calcium and magnesium treatments were dependent upon water quality and time length of treatment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8eb09f0693d393e43ca9406dbe94d220 https://doi.org/10.21273/hortsci.26.5.496c Zobrazit plný text záznamu