Abstract
The biopolymer Agar Agar, derived from red algea belonging to Rhodophaceae, was tried as a gel soil conditioner. Four greenhouse ex-periments were conducted for this purpose during the period from 1992 to 1994. Results obtained in this study show that seed soaking method could have a promising effect, as: 1: Soaking wheat seeds in Agar solution of 0.2 % significantly in-creased dry weight of plants grown on sandy soils by about 73 % over that obtained from control. A significant considerable enhancement ef-fect 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, micronutrients or their combina-tion in clayey soil. 2: Soaking cotton seeds in Agar solution of 0.2 % significantly in-creased the response of seed cotton yield to N fertilizer in clayey soil. 3: Soaking wheat seeds in Agar solution of 0.1% increased the ef-ficiency of the biofertilizer Cerealin with wheat plants grown on sandy and calcareous soils, as their dry weight increased by 18% and 25% re-spectively over that obtained from Cerealin alone. On the other hand, application of Agar solution to a calcareous soil as anticrusting agent at the rate equivalent 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 that should be used with Agar, a result of economical importance.
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Claims 9
Claim · model-written summary
Soaking wheat seeds in 0.2% agar increased dry weight of plants on sandy soils by about 73% over the control.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- Soaking wheat seeds in Agar solution of 0.2 %e1
- Outcome
- dry weight of plantse1
- Direction
- in-creasede1
- Value
- 73 %e1
- Comparator
- controle1
- Setting
- sandy soilse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Soaking wheat seeds in Agar solution of 0.2 % significantly in-creased dry weight of plants grown on sandy soils by about 73 % over that obtained from control”
Claim · model-written summary
Combining 0.2% agar seed soaking with Fe, Mn and Zn chelates enhanced dry weight by 129% over the control.
- Taxon
- wheatTriticum aestivume1
- Treatment
- combination with the three microelements Fe, Mn and Zn at 0.2% of each in chelated forme2
- Outcome
- dry weighte1
- Direction
- enhancemente2
- Value
- 129%e2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Soaking wheat seeds in Agar solution of 0.2 % significantly in-creased dry weight of plants grown on sandy soils by about 73 % over that obtained from control”
e2“A significant considerable enhancement ef-fect for its combination with the three microelements Fe, Mn and Zn at 0.2% of each in chelated form was obtained (129% over control)”
Claim · model-written summary
Micronutrients alone gave little response in wheat.
- Taxon
- wheatTriticum aestivume1
- Treatment
- these nutrients alonee2
- Outcome
- responsee2
- Direction
- littlee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Soaking wheat seeds in Agar solution of 0.2 % significantly in-creased dry weight of plants grown on sandy soils by about 73 % over that obtained from control”
e2“A significant considerable enhancement ef-fect 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”
Claim · model-written summary
Agar, micronutrients or their combination gave a relatively slight response in clayey soil.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Agar, micronutrients or their combina-tione3
- Outcome
- responsee3
- Direction
- slighte3
- Qualifier
- relativelye3
- Setting
- clayey soile3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Soaking wheat seeds in Agar solution of 0.2 % significantly in-creased dry weight of plants grown on sandy soils by about 73 % over that obtained from control”
e3“However, there was a relatively slight response to either Agar, micronutrients or their combina-tion in clayey soil”
Claim · model-written summary
Soaking cotton seeds in 0.2% agar significantly increased the response of seed cotton yield to N fertilizer in clayey soil.
- Taxon
- cotton
Gossypium hirsutume4 - Treatment
- Soaking cotton seeds in Agar solution of 0.2 %e4
- Outcome
- response of seed cotton yield to N fertilizere4
- Direction
- in-creasede4
- Setting
- clayey soile4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Soaking cotton seeds in Agar solution of 0.2 % significantly in-creased the response of seed cotton yield to N fertilizer in clayey soil”
Claim · model-written summary
Soaking wheat seeds in 0.1% agar increased dry weight by 18% over Cerealin alone on sandy and calcareous soils.
- Taxon
- wheatTriticum aestivume5
- Treatment
- Soaking wheat seeds in Agar solution of 0.1%e5
- Outcome
- dry weighte5
- Direction
- increasede5
- Value
- 18%e5
- Comparator
- Cerealin alonee5
- Setting
- sandy and calcareous soilse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Soaking wheat seeds in Agar solution of 0.1% increased the ef-ficiency of the biofertilizer Cerealin with wheat plants grown on sandy and calcareous soils, as their dry weight increased by 18% and 25% re-spectively over that obtained from Cerealin alone”
Claim · model-written summary
Soaking wheat seeds in 0.1% agar increased dry weight by 25% over Cerealin alone on sandy and calcareous soils.
- Taxon
- wheatTriticum aestivume5
- Treatment
- Soaking wheat seeds in Agar solution of 0.1%e5
- Outcome
- dry weighte5
- Direction
- increasede5
- Value
- 25%e5
- Comparator
- Cerealin alonee5
- Setting
- sandy and calcareous soilse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Soaking wheat seeds in Agar solution of 0.1% increased the ef-ficiency of the biofertilizer Cerealin with wheat plants grown on sandy and calcareous soils, as their dry weight increased by 18% and 25% re-spectively over that obtained from Cerealin alone”
Claim · model-written summary
Agar solution at 0.025% of soil weight applied to calcareous soil slightly improved sudan grass yield.
- Taxon
- sudan grass
Sorghum ×drummondiie6 - Treatment
- application of Agar solution to a calcareous soil as anticrusting agent at the rate equivalent to 0.025 % of soil weighte6
- Outcome
- yielde6
- Direction
- improvede6
- Qualifier
- slightlye6
- Setting
- calcareous soile6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“application of Agar solution to a calcareous soil as anticrusting agent at the rate equivalent to 0.025 % of soil weight, slightly improved the yield of sudan grass”
Claim · model-written summary
Agar at 0.05% of soil weight depressed sudan grass yield relative to the 0.025% rate.
- Taxon
- sudan grassSorghum ×drummondiie6
- Treatment
- Increasing such rate to 0.05%e7
- Outcome
- yielde7
- Direction
- depressede7
- Comparator
- 0.025 %e6
- Setting
- calcareous soile6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“application of Agar solution to a calcareous soil as anticrusting agent at the rate equivalent to 0.025 % of soil weight, slightly improved the yield of sudan grass”
e7“Increasing such rate to 0.05% depressed the yield”
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