| Titles |
|
English :
|
The biopolymer, Agar Agar, as a soil conditioner
Part I : Greenhous experiments
|
|
Arabic :
|
استخدام البوليمر الحيوي، آجار آجا كمحسن للتربة
الجزء الأول - تجارب الأصص في الصوبة
|
|
| Abstract |
The biopolymer Agar Agar (Agar), derived from red algea belonging to Rhodophaceae, was tried as a gel soil conditioner. Four green experiments were condnducted for this purpose during the period from 1992 to 1994. Results obtained in this study show, that using Agar by seed soaking method could have a promising effect, as:
1: Soaking wheat seeds in Agar solution of 0.2 % significantly increased dry weight of plants grown in sandy soils by about 73 % over that obtained from control. A. significant considerable enhancent for its combination with the three microelements Fe, Mn and Zn at 0.2 % of each in chelated form was obtained (129% over control), while the response to these nutrients alone was little. However, there was a relatively slight response to either Agar, or micronutrients or their combination in clayey soil.
2: Soaking cotton seeds in Agar solution of 0.2 % significantly increased the respone of seed cotton yield to N fertilizer in clayey soil.
3: Soaking wheat seeds in Agar solution of 0.1% increased the efficiency of the biofertilizer cerealin in wheat plants grown in sandy and calcareous soils, as their dry weight increased by 18% and 25% respectively over that obtained from cerealin alone.
On the other hand, application of Agar solution to a calcareous soil as anticrusting agent at the rate equvalent to 0.025 % of soil weight, slightly improved the yield of sudan grass. Increasing such rate to 0.05% depressed the yield, indicating that these rates were much higher than should be used with Agar, a result of ecomical importance.
|
| Publication year |
2002
|
| Pages |
1-12
|
| Availability location |
(معهد بحوث الاراضى والمياه والبيئة)Agriculture Research Center
|
| Availability number |
|
| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
|
| City |
Giza,
|
| serial title |
Egypt. J. Agric. Res.,
|
| Department |
Sandy and Calcareous Soils Research
|
| Author(s) from ARC |
|
| Agris Categories |
Soil erosion, conservation and reclamation
|
AGROVOC
TERMS |
Agar.
Calcareous soils.
Sandy soils.
Soil conditioners.
Sorghum arundinaceum.
Wheats.
|
| Publication Type |
Journal
|