Abstract
Abstract. Pujisiswanto H, Mar’ah DL, Sriyani N, Yusnita, Evizal R. 2022. Effectivity of soap nuts extract (Sapindus rarak) as bioherbicide toward the growth of Leptochloa chinensis and Fimbristylis milacea. Biodiversitas 23: 1222-1230. Fimbristylis miliaceae and Leptochloa chinensis weeds were grown predominantly in rice fields which cause a decrease in production yields of up to 36%-43%. The aim of this experiment was to evaluate the method of extractions and find the best concentration of Sapindus rarak by Aqueous and methanol extracts against the growth of F. miliacea and L. chinensis, which do not reduce the growth of rice. Two experiments were arranged for this research; the first was bioassay tests of weed growth of F. miliaceae and L. chinensis at the greenhouse, which were applied by aqueous and methanol S. rarak extracts. It was carried out using a randomized block design in factorial (2x5). The second experiment was the rice growth toxicity test which was applied S. rarak extracted by aqueous and methanol, analyzed to single factor randomized design with various concentrations. The results showed that the application of S. rarak extracted by aqueous and methanol was able to inhibit the growth of L. chinensis and F. mileacea weeds at a concentration of 25%, 50% and 75%. The application of S. rarak extracted by aqueous did not affect rice growth, whereas S. rarak extracted by methanol inhibited rice height and stover weight at a concentration of 75%, but did not inhibit root length growth and leaf number.
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Claims 8
Claim · model-written summary
Aqueous soap nut extract inhibited L. chinensis growth at 25%, 50% and 75%.
- Taxon
- rice
Oryza sativae1 - Treatment
- S. rarak extracted by aqueouse0
- Interactor
- L. chinensis
Dinebra chinensise0weed - Outcome
- growth of L. chinensise0
- Direction
- inhibite0
- Qualifier
- 25%, 50% and 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the application of S. rarak extracted by aqueous and methanol was able to inhibit the growth of L. chinensis and F. mileacea weeds at a concentration of 25%, 50% and 75%.”
e1“rice fields”
Claim · model-written summary
Methanol soap nut extract inhibited L. chinensis growth at 25%, 50% and 75%.
- Taxon
- riceOryza sativae1
- Treatment
- methanole0
- Interactor
- L. chinensisDinebra chinensise0weed
- Outcome
- growth of L. chinensise0
- Direction
- inhibite0
- Qualifier
- 25%, 50% and 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the application of S. rarak extracted by aqueous and methanol was able to inhibit the growth of L. chinensis and F. mileacea weeds at a concentration of 25%, 50% and 75%.”
e1“rice fields”
Claim · model-written summary
Aqueous soap nut extract inhibited F. mileacea growth at 25%, 50% and 75%.
- Taxon
- riceOryza sativae1
- Treatment
- S. rarak extracted by aqueouse0
- Interactor
- F. mileaceae0weed
- Outcome
- F. mileacea weedse0
- Direction
- inhibite0
- Qualifier
- 25%, 50% and 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the application of S. rarak extracted by aqueous and methanol was able to inhibit the growth of L. chinensis and F. mileacea weeds at a concentration of 25%, 50% and 75%.”
e1“rice fields”
Claim · model-written summary
Methanol soap nut extract inhibited F. mileacea growth at 25%, 50% and 75%.
- Taxon
- riceOryza sativae1
- Treatment
- methanole0
- Interactor
- F. mileaceae0weed
- Outcome
- F. mileacea weedse0
- Direction
- inhibite0
- Qualifier
- 25%, 50% and 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the application of S. rarak extracted by aqueous and methanol was able to inhibit the growth of L. chinensis and F. mileacea weeds at a concentration of 25%, 50% and 75%.”
e1“rice fields”
Claim · model-written summary
Aqueous soap nut extract did not affect rice growth.
- Taxon
- riceOryza sativae0
- Treatment
- S. rarak extracted by aqueouse0
- Outcome
- rice growthe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of S. rarak extracted by aqueous did not affect rice growth”
Claim · model-written summary
Methanol soap nut extract at 75% inhibited rice height.
- Taxon
- riceOryza sativae0
- Treatment
- S. rarak extracted by methanole0
- Outcome
- rice heighte0
- Direction
- inhibitede0
- Qualifier
- 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. rarak extracted by methanol inhibited rice height and stover weight at a concentration of 75%”
Claim · model-written summary
Methanol soap nut extract at 75% inhibited rice stover weight.
- Taxon
- riceOryza sativae0
- Treatment
- S. rarak extracted by methanole0
- Outcome
- stover weighte0
- Direction
- inhibitede0
- Qualifier
- 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. rarak extracted by methanol inhibited rice height and stover weight at a concentration of 75%”
Claim · model-written summary
Methanol soap nut extract did not inhibit rice root length and leaf number.
- Taxon
- riceOryza sativae0
- Treatment
- S. rarak extracted by methanole0
- Outcome
- root length growth and leaf numbere0
- Direction
- did not inhibite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. rarak extracted by methanol inhibited rice height and stover weight at a concentration of 75%, but did not inhibit root length growth and leaf number.”
The same questions in other papers
methanol · growth · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.