Written in English
|Statement||by Zhongyan Lin|
|The Physical Object|
|Pagination||xiii, 137 leaves :|
|Number of Pages||137|
Aluminum effect on growth of citrus roots in solution and soil systems. By Zhongyan Lin. Abstract (Thesis) Thesis (Ph. D.)--University of Florida, (Bibliography) Includes bibliographical references (leaves )(Statement of Responsibility) by Zhongyan LinAuthor: Zhongyan Lin. Low pH and high Al concentration are the factors contributing to poor citrus growth and shortened lifespan of trees (Lin and Myhre, ). Although the effects of Al on mineral nutrient (Lin and Myhre, b) and CO 2 assimilation (Pereira et al., ; Chen et al., ) of citrus have been investigated by a few researchers, very Cited by: 1. Introduction. Aluminum (Al) is a light metal that makes up 7% of the earth’s crust, occurring as a harmless oxide and aluminosilicate. However, when in acid mineral soils (especially pH soil solution and becomes toxic to sensitive plants (Bennet et al., , Poschenrieder et al., ).It usually contaminates the soil, water and food chains from sources such as food. The size of a citrus tree is linked to the size of its root system. Larger, more vigorous root systems can support more shoots. Conversely, more shoots grow in response to root system growth as supported through photosynthesis. When the root system is damaged or diseased, leaves fall off the citrus tree.
Aluminum in higher concentration may affect the growth of root and had a tillage pan and which had high soil aluminum at depths >15 cm. in solution decreased the root to shoot ratio of. Aluminum (Al) toxicity in acidic soils is a global agricultural problem that limits crop productivity through the inhibition of root growth. However, poor management associated with the application of soil acidity amendments such as lime (CaCO3) in certain crop types can pose a threat to low-input farming practices. Accordingly, it is important to develop appropriate techniques for the. Sometimes, citrus leaves will curl when there’s extreme weather conditions, such as heat, cold and wind, so check the soil to be sure! Citrus in Pots and Containers. If a citrus tree is not in the ground but in a pot, then there should be no problem with root rot, as pots have drainage holes, unless the pot is sitting in a tray of water!!! ‘Sour pummelo’ (Citrus grandis) and ‘Xuegan’ (C. sinensis) seedlings were irrigated for 18 weeks with nutrient solution containing 0 (−Al) and mM AlCl 3 6H 2 O (+Al) × 0, 50 and μM KH 2 PO 4.C. sinensis was more tolerant to aluminum (Al) than C. orus (P) alleviated the toxic effects of Al on seedlings. Under Al stress, P increased root Al, but decreased.
Explore the latest full-text research PDFs, articles, conference papers, preprints and more on ALUMINUM TOXICITY. Find methods information, sources, references or conduct a . As soil pH decreases, nutrients, such as phosphorus, usually decrease in plant availability because of precipitate reactions with iron and aluminum. However, plants can affect their micro-environment and are often found to grow well over a range of soil pH. This range of successful growth is . Aluminum toxicity limits plant growth mainly through its adverse effects on root growth and development. Under acidic soil conditions, active, phytotoxic forms of Al are released to the soil solution to levels that can inhibit root growth and damage roots (Foy, , ; Delhaize et al., a). The mechanistic basis for Al toxicity effects on root growth is still a matter of speculation, but it almost certainly involves decreased cell division at the root apex. In this series of experiments, we attempt to determine whether Al enters meristematic cells and binds to nuclei when roots are exposed to a low Al 3+ activity in solution.