| Titles |
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English :
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Interaction effect between phosphorus and selenium on their availability in soil and contents in soybean plants grown on alluvial clayey soil
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Arabic :
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تأثير التفاعل بين الفوسفور والسيلينيوم علي تيسرهما في التربة ومحتواهما في نباتات فول الصويا النامية في تربة رسوبية طينية
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| Abstract |
A greenhouse trial was carried out using an alluvial clayey composite soil sample as growth media for soybean plants (Giza, 22) to study the interaction effect between P and Se on their availability in soil and contents in soybean plants. The Se was applied at rates of 0, 0.5, 1.0, 5, 10, 20 and 40 mg kg-1 soil as sodium selenate. Phosphorus was added at rates of 0, 50, 100 and 150 mg kg-1 soil as potassium dihydrogen phosphate. During growth season, the soil samples were taken from rhizosphere area at periods of 15, 30, 45 and 60 days to assess the status of Se and P under rhizosphere conditions.
The main results revealed that :
• The dry matter yield of soybean plants was significantly and negatively affected with increasing rates of Se addition, irrespective of P application. Each of 1.0 mg Se addition over 0 treatment caused a decrease in D.M yield of soybean plants by 0.086 g. In absence of Se application, the dry matter production of soybean plants was positively but insignificantly affected as the rates of phosphorus application increased.
• Selenium concentration in soybean plants increased significantly as the application rates of Se and P increased, but this an increase was not significant with P addition.
• Either phosphorus or selenium application resulted in a significant increase in P concentration of soybean plants .
• Increasing rates of either selenium or phosphorus addition to the soil produced a significant increase in Se- uptake by soybean plants.
• P-uptake by soybean plants was significantly but negatively affected with increasing levels of applied Se in absence of P treatments, while application of P to the soil yielded a positive significance correlation with P- uptake by soybean plants.
• Soil available Se was significantly increased as the levels of selenium and phosphorus increased. The highest increase in soil available Se was occurred during the first period of incubation (15 days) where it amounted 35.3 and 1308%, as compared with P0 and Se0 treatments, respectively. However, soil available Se was significantly reduced with prolonging the incubation time.
• Soil available P was markedly increased with increasing the application rates of P and Se, but it decreased as the incubation period increased. The first rate of P increased the available P by 18% and the second one caused 8% increase over the first rate, while application of the third dose of P yielded 7% over the second one
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| Publication year |
2004
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| Pages |
2075-2088
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| Availability location |
Soils, Water and Environment Research Institute, ARC
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| Availability number |
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| Country |
Egypt
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| City |
Benha
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| Publisher |
Name:
Faculty Of Agriculture, Moshtohor, Benha University
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| serial title |
Annals Of Agricultural Science, Moshtohor
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| Volume |
42
. 4
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| Department |
Soil Physics and Chemistry
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| Author(s) from ARC |
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| Agris Categories |
Soil chemistry and physics
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AGROVOC
TERMS |
Clay soils.
Phosphorus.
Selenium.
Soybeans.
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| Publication Type |
Journal
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