bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preliminary assessment of ironwood (Eusideroxylon zwageri Teijsm. & Binnend.) stand on the KPPN Bulian of the District VIII of PT. Wirakarya Sakti, Jambi as seed source candidate
Authors: Prastyono  , Haryjanto L , Putri A I , Herawan T , Fauzi M A , Izudin E , Setiawan A , Suprihati  , Hartono R , Priatna D , Agusta C , Hardoko T , Rahman E , Suharyanto  
Published: November 2021

Abstract
Ironwood (Eusideroxylon zwageri) is one of Indonesia’s most economically valuable timber tree species and was listed as Vulnerable in 1998 by the IUCN. To support conservation activities and establish E. zwageri’s plantation, good quality planting stocks should be collected from specific seed sources. Currently, there is only one ironwood seed source in Sumatra that has been registered. This study aimed to assess the potential for an ironwood stand on the KPPN Bulian of the District VIII of PT. Wirakarya Sakti is to be proposed as a seed source. The assessment was conducted on July 2020 by a 100% inventory of ironwood trees in the area of 43 ha. Every individual tree and copy of ironwood was measured for its stem diameter and tree height and observed for its health, flowers, fruits, and seedlings in the ground. In total, 1,029 individual trees, copies and seedlings were recorded. Among them, 116 trees were found to have young fruits and seedlings emergence in the forest floor. Generally, the ironwood stand is sound and meets the criteria to be registered as an identified seed stand of ironwood.
Integrated disease management to control gall rust disease on the seedling and sapling of Falcataria moluccana
Authors: Lelana N E , Darmawan U W , Anggraeni I , Astanti F E , Rosalinda M D 
Published: November 2021

Abstract
Several control methods have been developed to control the disease caused by Uromycladium falcatariae. However, it is still used a single approach that may not receive satisfactory results. This study applied integrated disease management that consisted of physical, chemical, and biological approaches to reduce gall rust disease incidence. In the nursery, the control methods used were selecting nursery location, applying the biological agent Trichoderma sp, and regular spraying with fungicides. Meanwhile, after planting, the control methods used were regularly spraying with fungicides, pruning the infected tissues, and fertilizer application. Three active ingredients were used for fungicide application: tebuconazole, a mixture of azoxystrobin and difenoconazole, and tribasic copper sulfate. The result showed no gall rust disease incidence in the seedling until it was ready for planting (4 months old). In addition, the application also gave positive results on seedling growth performance compared to the control. After planting, the incidence of gall rust disease can be reduced between 16.5-32.5% when the saplings were three months old and 14.3-26.3% when the saplings were ten months old. Fungicide with the active ingredient, a mixture of azoxystrobin and difenoconazole, showed more effective protection against gall rust disease infection compared to other active ingredients.
Farming competence of farmer in peatland management: Case in Rasau Jaya Dua Village, West Kalimantan Province
Authors: Sanudin  , Widyaningsih T S , Fauziyah E 
Published: November 2021

Abstract
The local community has managed peatlands for a long time with various commodities and levels of management. The success of farming in peatland requires the seriousness of farmers and proper land management to produce peatland’s high productivity and sustainability, including farmer’s competence. The research aims to analyze farmers’ competence in peatland farming and identify factors that influence farmers’ competence in peatland management. The research was conducted from August to October 2017 in Rasau Jaya Dua Village, Kubu Raya District, West Kalimantan. The selection of 48 respondents was made by a simple random sampling method. Primary data, including characteristics of respondents and farmer’s competence in peatland management, were collected through interviews using questionnaires and field observations. Data were analyzed qualitatively and quantitatively using the correlation test of Rank Spearman. The results showed that the farmers’ competence level in peatland farming in Rasau Jaya Dua Village was moderate. Factors that must be considered to develop the farming competence in peatland are age, motivation, and interaction with extension workers. Increasing the farming competence of farmers in peatland management can be achieved through improving the interaction between farmers and extension workers.
Integrating issues of biodiversity and climate change to achieve sustainable forest management: A case of Mbeliling landscape, Flores
Authors: Adinugroho W C , Krisnawati H , Imanuddin R , Ayat A , Wirastami L A , Kusmana C 
Published: November 2021

Abstract
Biodiversity and climate change are interrelated, so a coordinated approach is needed to cover it by focusing on how landscapes provide many benefits. The Mbeliling landscape, Flores is the smallest management unit in an ecological perspective, essential for the conservation and preservation of biodiversity, especially for the endemic birds of Flores. Efforts to preserve biodiversity are also expected to contribute to climate change mitigation and adaptation. The study aims to produce data and information on biodiversity and potential carbon stocks at the land cover of the Mbeliling landscape. Desk study and field survey were used to answer research questions. The Mbeliling landscape has eight types of tree vegetation land cover that can serve as carbon sinks and the habitat for four species of Flores endemic birds. Approximately 139 species of vegetation with the total carbon stocks could potentially absorb the carbon dioxide in the atmosphere of ± 103.63 Mt CO2-e. The type of land cover significantly influences carbon stocks. The land cover with forest category in the Mbeliling landscape has the most extensive carbon stock among other land cover types. This result can be used as a reference in managing the Mbeliling landscape in integrating efforts to conserve biodiversity and mitigate climate change through the REDD+ scheme.
The effect of feeding various species of mulberry (Morus spp.) on the growth of silkworm and quality of cocoon hybrid BS 09
Authors: Andadari L , Minarningsih  , Suwandi  
Published: November 2021

Abstract
Hybrid silkworm varieties, mulberry species, environmental factors, and rearing factors are essential for the cocoons’ quality. The species of silkworm feeding is a key factor in the sericulture industry, so the suitability of mulberry species for each silkworm hybrid species needs to be known. This study aimed to determine the effect of mulberry species on silkworm growth and quality of cocoons BS 09. The research method used was a randomized block design with four species of mulberry: Morus bombycis var Lembang, M. cathayana, M. multicaulis, and M. alba var Kanva 2 and one control species (mixed mulberry species). The research was carried out at Dramaga Research Forest, Bogor Regency. The determined parameters were the percentage of rearing, larva weight, cocoon weight, cocoon shell weight, and percentage of cocoon shell. The experiment results showed that the percentage of rearing was 97.5%-100% for all species of mulberry. The best result of the cocoon weight was feed treatment of M. multicaulis (1.89 g), but it was not significant with feed treatment of M. bombycis var Lembang or M. cathayana or M. alba var Kanva 2. M. cathayana feed treatments give the best results for the cocoon shell weight (0.44 gram) and percentage of cocoon shell (22.82%).
Genetic diversity of Pericopsis mooniana from South Kalimantan based on Random Amplified Polymorphism DNA (RAPD) Markers
Authors: Yuskianti V , Sulistyawati P 
Published: November 2021

Abstract
The genetic diversity and relationship of Pericopsis mooniana collected from Pulau Laut, South Kalimantan, was analyzed using RAPD markers. Currently, the natural distribution of P. mooniana in Pulau Laut no longer exists. Instead, PT Inhutani II, as the concession holder in the area, had collected the remaining P.mooniana and planted it in the seed orchard, arboretum, or around PT Inhutani’s mess/office. Forty-two samples from four locations: mess/residential house (3), seed orchard (33), arboretum (3), and PT Inhutani II Unit Stagen (3) were analyzed using seven RAPD primers. Our study showed that the total genetic diversity of all populations was low (He = 0.191 ± 0.013). P. mooniana collected from seed orchards had the highest diversity (He = 0.289 ± 0.021), while the lowest was from mess/residential houses (He = 0.134 ± 0.025). The genetic relationship data indicated the possibility that P. mooniana from mess/residential house, arboretum, and seed orchard may come from the same origin. These results can be used to support the development of ex-situ conservation plots to avoid inbreeding depression. At the same time, the genetic diversity will be helpful in its conservation and further utilization, such as establishing the plantations to reduce the pressure of the species in nature and provide valuable timber production in Indonesia.
Indicator for peat natural recovery in Sebangau National Park in Central Kalimantan, Indonesia
Authors: Setyawati T , Julianti N , Pratiwi  , Mulyanto B , Subiakto A 
Published: November 2021

Abstract
Most of the existing peatland area in Indonesia is degraded mainly due to human activities. This, in association with the construction of drainage canals, resulted in a lower water table compared to its natural condition, causing many changes. Although the criteria for damage and recovery have already been articulated into several existing regulations, yet the indicators for recovery have not been widely studied. For effective restoration, managers need to have basic data related to the initial condition of damaged areas or at least have data on areas that are able to recover naturally without human assistance. Random sampling was used to collect field data on vegetation structure and composition, including direct interviews with the resource persons. Observations made in several locations within the Sebangau National Park indicated that some areas are recovering naturally and relatively fast, although some are not. During 2017 forest fires, only 98.03 ha or burned areas were recorded. This can be seen from the species composition and the vegetation structure covering the studied area. Conditions in the field indicate that all peat forests have been fragmented through the existence of canals which are used for various activities.
Ecological risk assessment of potentially invasive alien plant species in Cibodas Biosphere Reserve, West Java, Indonesia
Authors: Handayani A , Junaedi D I , Zuhud E A M 
Published: November 2021

AbstractMore than 80 potentially invasive plant species have spread throughout the Cibodas Biosphere Reserve, Indonesia. Recently, research has shown that the surrounding community utilizes more than 50% of these species. Although this utilization provides social and economic benefits, it threatens the Cibodas Biosphere Reserve core zone ecologically. Therefore, this study conducted a risk assessment to determine the invasiveness level of utilized plant species. The evaluation was performed using Hawaii and Pacific Weed Risk Assessment (WRA) scheme. The results show that almost all the potentially invasive plant species are high risk, with scores ranging from 10 to 26, except forFragaria vescaandMentha arvensis. The highest WRA score was obtained forLantana camaraand followed byAustroeupatorium inulifolium,Cobaea scandens,Mikania cordata, Sonchus asper,Clidemia hirta,Piper aduncum,Sonchus arvensis, Cestrum aurantiacum,Dracaena fragrans,Passiflora ligularis,Podachaenium eminens,Thunbergia coccinea, andWedelia trilobata. As most of these species were herbaceous plants obtained from cultivated areas, the risk of invasion into the core zone is low. Based on the findings, the recommended management option to control these species is harvesting, accompanied by containment. Through this method, the community can continue to use the species while controlling the population, thereby limiting their spread.
Alleviating peatland fire risk using water management trinity and community involvement
Authors: Fawzi N I , Qurani I Z , Darajat R 
Published: November 2021

AbstractConventionally, agriculture in peatland requires soil drainage to enable the crops to grow. This often results in being over-drained and makes it vulnerable to fires. The risk can be contained by applying water management trinity (WMT), which creates canals for water regulation and reservoirs instead of drainage. This study aimed to examine, elaborate, and validate the WMT effect and community involvement in minimizing fire risk in peatland. We collected water table depth every two weeks from 1 April 2017 to 31 December 2020 in a coconut plantation under WMT and employed Focus Groups Discussions (FGD) in five villages in Pulau Burung District, Indragiri Hilir Regency, Riau. The result showed that the existence of WMT for more than three decades has successfully maintained water table depth between 30 and 70 cm that is influenced by seasons. The fire occurrence based on the FGD interview has been validated with hotspot data from NASA’s FIRMS. This research also employed SWOT analysis to examine the local fire mitigation strategy. The progress in lowering fire incidents and risk should be intervened with finding long-term solutions to increase farmers’ capability on sustainable agriculture. Our finding reveals that the main strength in lowering fire risk is people’s awareness in every village on the negative impact of land burning, along with the existence of WMT.
Agroforestry development in Lake Toba catchment area: Farmer’s perception and interest
Authors: Dewi R , Darwo  , Yeni I , Andadari L , Bogidarmanti R 
Published: November 2021

AbstractThe Lake Toba Catchment Area (LTCA) has degraded due to a lack of implementation of conservation principles. Agroforestry is one of the land-use techniques with a conservation approach. Agroforestry development in LTCA should be supported by stakeholders, especially farmers. Farmers’ support will be formed if they have a good perception and interest in developing the agroforestry systems. The study aims to determine farmers’ characteristics, perceptions, and interests in agroforestry development in LTCA. The study was conducted from July until August 2019 at Simalungun Regency, North Sumatra Province. Data were collected through semi-structured interviews using a questionnaire with 30 respondents. Measurement of farmers’ perception and interest use a Likert scale. The data were then analyzed descriptively. The results showed that the farmers’ age is dominated by the productive phase (30-50 years old); they are only completed elementary schools, with average landholding was <0.3 ha, and farming experience >10 years. Farmers’ perceptions and interests in agroforestry development in LTCA are in good categories, each with a score of 4.18. These perceptions and interests of farmers are supporting factors that would positively impact the development of sustainable agroforestry in LTCA.
The growth performance of dipterocarps species and understorey diversity in the Gunung Dahu Research Forest, Leuwiliang, Bogor
Authors: Fambayun R A , Istomo  , Ramadhan D E 
Published: November 2021

AbstractDipterocarps species is the main species composes Gunung Dahu research forest. Habitat suitability and growth performance of a species are some factors considered in the species selection for forest establishment. The understorey in a forest community serves to protect soil from erosion. This research aimed is to analyze the growth performance of various Dipterocarpaceae species and study understorey diversity in the research area. The measurement was conducted in four species trial plots contain ten Dipterocarps species consist of five individuals per species per plot or 200 individuals in total. The growth performance of Dipterocarp species was analyzed using the current annual increment (CAI) and mean annual increment (MAI) methods. The understorey diversity was analyzed using the Shannon-Wiener Index. The result showed thatShorea johorensisobtained the highest CAI, 0.95 cm year−1, andShorea platycladosgot the highest MAI, 1.78 cm/year.S. platycladosandS. leprosulawere projected to reach <40 cm in diameter after they got 25 years. The Gunung Dahu research forest’s understorey was classified as moderate (1.68 - 2.33). The dominant understorey species, namelyOldenlandia auricularia, Neprolephis biserrate, Ottochloa nodosa,andGleichenia linearis.This study concluded that the growth performance of Dipterocarps species in the study area varied, and the understorey condition was classified as moderate, where its diversity has a positive correlation with the crown openness.
An initial study of woody-debris decomposition to reduce risk of repeated-fire incidence in tropical peatland ecosystem
Authors: Agustini L , Hakim S S , Faulina S A , Yuwati T W , Santosa P B , Tampubolon A P 
Published: November 2021

Abstract
As peatland ecosystems were formed from layered partially decomposed plant biomass, they were considered more vulnerable to fire, especially during extreme drought season. Woody debris accumulation in the field may increase the risk of peatland fire. In order to minimize the chance of repeated fire, an initial study on woody debris decomposition by employing a consortium of wood-decay microbes (consists of Scedosporium apiospermum, Pycnoporus sp., Pycnoporus sanguineus, and unidentified cellulolytic bacterial isolate) was conducted. Series of experiments of in vitro-, semi-controlled-, and field- conditions were carried out. After 12-weeks of incubation, the in vitro trial showed that all treatments on mineral-soil basal media were colonized by fungal mycelia, including the control. Meanwhile, the treatments on peat soil seem less supportive for fungal growth since only six out of ten treatments have been colonized by fungal mycelia. In semi-controlled conditions, effects of microbial inoculation showed questionable results as the trials were randomly occupied by Schizophylum commune, which was not included in the microbial inoculants. Un-clear effects of the microbial inoculants were also observed on the field trial as no significant difference of dry-weight loss between the inoculated woody logs and the un-inoculated control. Further comprehensive studies to reduce woody debris in peatland areas are required.
Controlling invasive alien species Vachellia nilotica with triclopyr herbicide in Baluran National Park
Authors: Irianto R S B , Garsetiasih R , Setyawati T , Wahono N D , Susilo A , Tjitrosoedirdjo S 
Published: November 2021

Abstract

Vachellia nilotica (Acacia nilotica), as an invasive alien species (IAS), was introduced to Baluran National Park from the Bogor Botanical Gardens in 1969. The purpose was for firebreak to prevent jumping fires from the savanna to the teak forests plantation. However, unexpectedly V. nilotica growth was uncontrollable and invaded the 6000 ha savanna. The rapid growth of this weed has killed the grass in the savanna leading to a decline in the Banteng population in Baluran National Park from 325 in 1998 to 22 in 2011. Since the 1980s, researche on V. nilotica control has been carried out by various universities and research institutions in Indonesia but has not yet obtained an effective and efficient control method. The study aimed to investigate the efficacy of herbicide with the active ingredient of triclopyr by stump brushing to control V. nilotica. Ten triclopyr herbicide concentrations with a solution of diesel and water were tested. The results showed that 1% triclopyr concentration in diesel oil could control 100% of V. nilotica weeds, while water solutions could only control 50% of V. nilotica weeds.
Sprouting and rooting ability of the plus trees of Eucalyptus pellita, E. brassiana and its hybrid in Wanagama, Indonesia
Authors: Winarni W W , Susilo G S , Nugroho A A F , Safitri F R , Irwan  , Ratnaningrum Y W N 
Published: November 2021

AbstractThe demand for eucalypts has greatly increased since they are raw materials for timbers, plywoods, pulp and papers, and essential oil production. This study aimed to select the plus trees and determine the sprouting and rooting ability ofE. pellita, E. brassiana, and their hybrids in Wanagama. Plus trees selection and girdling were conducted in December 2019. Cuttings were picked from the 3rd-4thnodes of sprouting at 8-10 cm in length. A completely randomized design was applied in a factorial experiment with three levels of Indole Butyric Acid (IBA) (100, 1000, and 4000 ppm) and two types of media (media 1: sand, rice husk charcoal and cocopeat (2:2:1), media 2: sand, topsoil and dung-fertilizer (2:2:1)), with ten replications. Results selected a total of 53 plus trees candidates (29 ofE. pellita, 12 ofE. brassiana, and 12 of hybrid).E. pellitais the best in sprouting ability (100% survival; 41-60 shoot/trees, 127-161cm shoot length, 0.53-0.57cm shoot diameter, and 194-252 leaves/shoot). Cuttings ofE. pellitatreated with 100 ppm IBA gained the highest survival and leaves production (96%-100%; 14-16 leaves), followed byE. brassiana(52%-66.67%; 7 leaves) and the hybrid (4% to 8.33%; 3-4 leaves). These results may contribute to arranging better strategies for mass production of selected eucalypts.
Utilization of nyamplung industrial waste for compost and the response to nyamplung seedlings growth and nitrogen uptake
Authors: Hasnah T M , Windyarini E , Leksono B , Riyantika K , Purwanto B H , Adinugraha H A , Hakim L 
Published: November 2021

Abstract
The solid waste (dregs seed) of nyamplung (Calophyllum inophyllum) industry from seed pressing processes could be more than 50% of the dry seed weight. Nyamplung oil industry in Bantul (Yogyakarta) has been produced nyamplung oil 4-5 ton/month that produced dregs seed around 50-60%/ton nyamplung dry seeds. The accumulated waste has been piled up and immediately important to utilize it. This study aimed to determine (i) the effect of bioactivators with ameliorant material application and the interactions among treatments on nyamplung dregs compost quality, and (ii) the growth response, seedling quality index and nitrogen uptake on nyamplung seedlings with nyamplung dregs compost application. The study was arranged in Completely Randomized Design (CRD) factorial. Two bioactivators Prouponic Gb#1 and cattle rumen bio starter were used in the study. The bioactivators were combined by ameliorants (no ameliorant, dolomite, and rice husk ash) with 3 replicates for each treatment. Analyses of soil chemical properties were carried out on nyamplung dregs before and after the treatments applied including: pH, DHL, N Total, C/N ratio, P Total, K Total. Those characters were compared to SNI No.19-7030-2004 on compost quality standards. DHL, C/N ratio, the total N, P, and K met the criteria on SNI. Seedling growth characters (height, diameter, number of leaves) and seedling quality index varied between nyamplung dregs compost treatments and control up to 16 weeks observation. Nyamplung dregs compost application showed the highest N uptake on nyamplung seedlings compared to the controls. Nyamplung seedling quality index was highly influenced by the uptake of N nutrients in the shoots and the roots than by height character and diameter.