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All Journal Biodiversitas Journal of Biological Diversity
NURHENI WIJAYANTO
Department of Silviculture, Faculty of Forestry, Institut Pertanian Bogor. Jl. Ulin, Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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The growth and rooting dimensions of the Local and Solomon Albizia in the agroforestry system NIKMATUL AZIZAH; NURHENI WIJAYANTO; DESTA WIRNAS
Biodiversitas Journal of Biological Diversity Vol. 20 No. 10 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d201034

Abstract

Abstract. Azizah N, Wijayanto N, Wirnas D. 2019. The growth and rooting dimensions of the Local and Solomon Albizia in the agroforestry system. Biodiversitas 20: 3018-3023. Albizia (Falcataria moluccana (Miq.) Barneby & J.W.Grimes) is one of the leguminous plants that has a fast-growing character and profitable wood. Some types of albizia such as local albizia and Solomon albizia are cultivated by the community. Albizia planting can be integrated with crops such as upland paddy in agroforestry systems. Research on albizia planted in the agroforestry system was conducted to analyze the growth and root dimensions. This research was conducted for six months at the Cikabayan Field, Faculty of Forestry, IPB University, Bogor, West Java. This study was composed of two activities, those : (i) analyzing the effect of the albizia provenance on the growth of diameter, height, and canopy area, (ii) analyzing the root dimensions in agroforestry systems. The results showed that the albizia provenance had significant effect fo diameter, height, canopy area, and root length variable. F1 Solomon albizia has the best growth in all measured variables. F1 Solomon albizia has differed significantly with F2 Solomon and local albizia.
Growth of three types of sengon (Paraserianthes spp.) in varying planting spaces in agroforestry system Frisilia Sopacua; NURHENI WIJAYANTO; DESTA WIRNAS
Biodiversitas Journal of Biological Diversity Vol. 22 No. 10 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d221035

Abstract

Abstract. Sopacua F, Wijayanto N, Wirnas D. 2021. Growth of three types of sengon (Paraserianthes spp.) in varying planting spaces in agroforestry system. Biodiversitas 22: 4423-4430. Sengon (Paraserianthes spp.) is a fast-growing tree species that is commonly cultivated in the agroforestry system by communities in Indonesia, mainly on Java Island. Among several types of sengon, Solomon sengon is currently gaining popularity due to the fast growth in height and stem diameter. Nonetheless, the spacing layout of selected sengon types is unclear, including Solomon sengon, which yields more optimal growth. This study aimed to examine the growth of three sengon types (i.e., Solomon F2, Solomon F1, and local Kendal) in three spacing patterns, namely 1.5x1.5m, 3x1.5m, and 3x3m. This research was conducted from October 2019 to January 2020 (three months) in the Cikabayan Forest, Bogor Agricultural University, Bogor, West Java. The parameters of sengon growth observed were plant height, height growth rate, stem diameter, stem diameter growth rate, tree volume, and canopy area. Data analysis was performed using ANOVA and continued with Duncan's. The results showed that all types of sengon had optimal growth in the agroforestry system at various spacings. The growth of Solomon F2 adapted well to denser spacings (1.5x1.5m and 1.5x3m) with the highest averages in plant height, stem diameter, volume, and canopy area of ??10.50 m, 8.65 cm, 0.36 m3, and 5.39 m2. Local Kendal had optimal growth at a wider spacing (3x3m) with the highest average stem diameter, volume, and canopy area of ??8.96 cm, 0.043 m3, and 1063 m2. While Solomon F1 adapted well to the three spacings with the highest average in plant height, the growth rate of plant height, stem diameter, volume, and canopy area of ??10.05 m, 1.54 m, 8.59 cm, 0.042 m2, and 2075.30 m2. In general, it can be concluded that the Solomon F1 sengon can adapt well to narrow distances or wide distances. While Solomon F2 is more recommended to be planted at a narrower distance and Kendal local sengon is more recommended to be planted at a wider distance to get optimal growth.
An evaluation of an agroforestry system with 2-year-old sengon (Paraserianthes falcataria) and shade-tolerant upland rice SAHIDA HAURANI TSANIYA; NURHENI WIJAYANTO; DESTA WIRNAS
Biodiversitas Journal of Biological Diversity Vol. 23 No. 2 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230261

Abstract

Abstract. Tsaniya SH, Wijayanto N, Wirnas D. 2022. An evaluation of an agroforestry system with 2-year-old sengon (Paraserianthes falcataria) and shade-tolerant upland rice. Biodiversitas 23: 1159-1166. Sengon is tree species that is often cultivated with upland rice in agroforestry systems. The main obstacle of rice development in agroforestry systems are competition between plants for sunlight and nutrients. 2-year-old sengon has a wider canopy and longer roots, increasing competition between sengon and rice. Planting upland rice in this condition requires strategies, such as selecting shade-tolerant rice varieties and rice plantations inside bamboo. This study aimed to evaluate the agroforestry system of sengon and shade-tolerant upland rice when the sengon plants were two years old and evaluate the effectiveness of using bamboo to reduce the competition between sengon and upland rice. This research was conducted from November 2020 to April 2021 in the Cikabayan Forest, IPB University, Bogor, West Java. This study one-factor completely randomized design to analyze the growth of sengon provenances and a three-factor completely randomized design with three replications to analyze the growth and yield of rice. The first factor was the cultivation system (Solomon F1 agroforestry, Solomon F2 agroforestry, local sengon agroforestry, and rice monoculture), the second factor was the planting method (using bamboo and without bamboo), and the third factor was rice varieties (Rindang 1 Agritan and Rindang 2 Agritan). The results showed that Solomon and local sengon in this study had a growth that was not significantly different and had low diversity. The results also showed that 2-year-old sengon spacing 3 m x 1.5 m caused great shade and high competition, leading to low rice yields.
The diversity, ethnobotany and nutrient contents of Dioscorea for post-disaster food security in Lombok, Indonesia INDRIYATNO INDRIYATNO; NURHENI WIJAYANTO; IRMANIDA BATUBARA; SUPRIYANTO SUPRIYANTO
Biodiversitas Journal of Biological Diversity Vol. 25 No. 2 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250214

Abstract

Abstract. Indriyatno, Wijayanto N, Batubara I, Supriyanto. 2024. The diversity, ethnobotany and nutrient contents of Dioscorea for post-disaster food security in Lombok, Indonesia. Biodiversitas 25: 553-564. Earthquakes caused damage to infrastructure, houses, and roads in Lombok in 2018. After the earthquake, there was a shortage of food. Adaptation to address food shortage can be overcome by using local food sources, including those from the Dioscorea genus. The study aims to analyze the diversity and distribution, ethnobotany and nutrient contents of the Dioscorea genus in Lombok Island. Botanical explorations were conducted to identify the intraspecific varieties in the form of local types/names complemented with ethnobotanical study through structured interviews. The nutrient contents were determined using a standardized method in proximate analysis. The study found 12 local types of Dioscorea belonging to four species which are used by the community for adaptation after earthquake disaster, namely: D. bulbifera (kentang), D. bulbifera (engal), D. alata (uwi sawa), D. alata (lami), D. alata (uwi kuning ampenan), D. alata (uwi putih ampenan), D. alata (uwi ungu dara kunci), D. alata (uwi putih batu layar), D. alata (uwi ungu batu layar), D. esculenta var. apiculata (surak), D. esculenta var. spinosa (gembili) and D. pentaphylla (buyut). The highest diversity of Dioscorea is found in climate type C3 (8 local types), followed by climate type E (5 local types), climate type D4 (4 local types), climate type B2 (3 local types), and climate type C2 and D3 (1 local type). The local community utilizes the Dioscorea genus in several cultural events including when celebrating the Prophet Muhammad's birthday. The nutritional value of Dioscorea genus is high due to its carbohydrate content (66,09-76,96%), protein content (3.79­-10.84%), fat content (1.70-9.58 %) and fiber content (0.32-6.81%). This study shows the potential of Dioscorea to be used as food sources that are cheap, easy to grow, and more adaptive to different environmental conditions to help post-earthquake communities.
Co-Authors DESTA WIRNAS Frisilia Sopacua INDRIYATNO INDRIYATNO IRMANIDA BATUBARA NIKMATUL AZIZAH SAHIDA HAURANI TSANIYA SUPRIYANTO SUPRIYANTO