Abstract
Ground cover crops play an important role in maintaining the ecological balance in oil palm plantations. Nephrolepis biserrata, as a cover crop species, has not been extensively studied, especially in relation to soil type and vegetation level. This study aimed to analyze the distribution and dominance of Nephrolepis biserrata in oil palm plantations on various soil and vegetation levels. This quantitative research was conducted in oil palm plantations in Central Kalimantan Province using a survey method with purposive sampling. Nine treatment combinations of three soil types (Histosols, Ultisols, and Spodosols) and three vegetation levels (low, medium, and high) were tested on 81 test plots. Data analysis includes diversity index (Ĥ), uniformity index (E), dominance index (C), importance value index (INP), and relative dominance (DR). The results of the research show that N. biserrata has good adaptability and dominance as a ground cover crop in the producing crop (TM) phase in oil palm plantations, especially on Spodosol-type soils. Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%). There are no cover crop species that dominate exclusively in all soil types (0.078-0.185). Ultisols have high cover crop diversity (3,107), whereas Spodosols (2,130) and Histosols (2,595) have medium diversity. Ageratum conyzoides (15.08%) and Paspalum dilatatum (10.06%) also had significant INP in all soil types. Different soil conditions influence the number of cover crop vegetation species and communities in oil palm plantations.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 14
Claim · model-written summary
N. biserrata adapted and dominated especially on Spodosols.
- Taxon
- N. biserrata
Nephrolepis biserratae0 - Outcome
- good adaptability and dominancee0
- Setting
- Spodosol-type soilse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N. biserrata has good adaptability and dominance as a ground cover crop in the producing crop (TM) phase in oil palm plantations, especially on Spodosol-type soils”
Claim · model-written summary
N. exaltata INP in Ultisols was 76.65%.
- Taxon
- Nephrolepis exaltata
Nephrolepis exaltatae0 - Outcome
- INPe0
- Value
- 76.65%e0
- Setting
- Ultisolse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%)”
Claim · model-written summary
N. biserrata INP in Ultisols was 7.64%.
- Taxon
- Nephrolepis biserrataNephrolepis biserratae0
- Outcome
- INPe0
- Value
- 7.64%e0
- Setting
- Ultisolse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%)”
Claim · model-written summary
N. exaltata INP in Spodosols was 48.03%.
- Taxon
- Nephrolepis exaltataNephrolepis exaltatae0
- Outcome
- INPe0
- Value
- 48.03%e0
- Setting
- Spodosolse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%)”
Claim · model-written summary
N. biserrata INP in Spodosols was 82.75%.
- Taxon
- Nephrolepis biserrataNephrolepis biserratae0
- Outcome
- INPe0
- Value
- 82.75%e0
- Setting
- Spodosolse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%)”
Claim · model-written summary
N. exaltata INP in Histosols was 61.34%.
- Taxon
- Nephrolepis exaltataNephrolepis exaltatae0
- Outcome
- INPe0
- Value
- 61.34%e0
- Setting
- Histosolse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%)”
Claim · model-written summary
N. biserrata INP in Histosols was 23.98%.
- Taxon
- Nephrolepis biserrataNephrolepis biserratae0
- Outcome
- INPe0
- Value
- 23.98%e0
- Setting
- Histosolse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nephrolepis exaltata and Nephrolepis biserrata showed the highest INP in Ultisols (76.65%; 7.64%), Spodosols (48.03%; 82.75%), and Histosols (61.34%; 23.98%)”
Claim · model-written summary
No cover crop dominated every soil type.
Not reportedDirection
Verbatim
e0“There are no cover crop species that dominate exclusively in all soil types (0.078-0.185)”
Claim · model-written summary
Ultisols had high cover crop diversity of 3,107.
Verbatim
e0“Ultisols have high cover crop diversity (3,107), whereas Spodosols (2,130) and Histosols (2,595) have medium diversity”
Claim · model-written summary
Spodosols had medium diversity of 2,130.
Verbatim
e0“Ultisols have high cover crop diversity (3,107), whereas Spodosols (2,130) and Histosols (2,595) have medium diversity”
Claim · model-written summary
Histosols had medium diversity of 2,595.
Verbatim
e0“Ultisols have high cover crop diversity (3,107), whereas Spodosols (2,130) and Histosols (2,595) have medium diversity”
Claim · model-written summary
Ageratum conyzoides had significant INP of 15.08%.
- Taxon
- Ageratum conyzoides
Ageratum conyzoidese0 - Outcome
- INPe0
- Value
- 15.08%e0
- Setting
- all soil typese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ageratum conyzoides (15.08%) and Paspalum dilatatum (10.06%) also had significant INP in all soil types”
Claim · model-written summary
Paspalum dilatatum had significant INP of 10.06%.
- Taxon
- Paspalum dilatatum
_Paspalum_dilatatum_inflorescences.jpg?width=60)
Paspalum dilatatume0 - Outcome
- INPe0
- Value
- 10.06%e0
- Setting
- all soil typese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Paspalum_dilatatum_inflorescences.jpg?width=500)
Verbatim
e0“Ageratum conyzoides (15.08%) and Paspalum dilatatum (10.06%) also had significant INP in all soil types”
Claim · model-written summary
Soil conditions influenced ground-cover species number and communities.
- Taxon
- cover crop vegetation speciese0
- Outcome
- number of cover crop vegetation species and communitiese0
- Setting
- oil palm plantationse0
Not reportedDirection
Verbatim
e0“Different soil conditions influence the number of cover crop vegetation species and communities in oil palm plantations”