Evaluasi Kesuburan Tanah Pada Berbagai Tutupan Lahan Di Kebun Raya Bogor

Rachmadiyanto, Arief Noor; Wanda, Irvan Fadli; Rinandio, Dipta Sumeru; Magandhi, Mahat

doi:10.14203/bkr.v23i2.263

Cited by 10 publications

(16 citation statements)

References 20 publications

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“…Two species of insects were spotted to visit R. gadutensis during the blossoming period, i.e., green fly Lucilia sericata and weaver ant Oecophylla sp (Figure 1). Insects may play an important role in pollination biology of Rafflesia [1]. Insect species of Lucilia and Chrysomia were found as possible pollinators for R. pricei [8].…”

Section: Resultsmentioning

confidence: 99%

“…They do not have leaves, stems, and roots. About 36 species of Rafflesia have been identified, occurring in Indonesia, the Philippines, and Malaysia [1]. The genus Rafflesia is known to be the largest flower of the plant kingdom [2].…”

Section: Introductionmentioning

confidence: 99%

“…Parasitic Rafflesia fully depends on the Tetrastigma species as host plant. Other factors which determine the proliferation of this species are vegetation types and micro-climate, edaphic factor, topography, pollination and seed dispersal as well as human activities [1,7] . As Rafflesia is dioecious plant, the role of pollinators is crucial [8].…”

Section: Introductionmentioning

confidence: 99%

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Insect visits and variation of floral temperatures during blossoming of Rafflesia gradutensis

2023

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The survival of parasitic plant Rafflesia depends on the host plant, habitat condition, vegetational types, , pollination and the dispersal of seeds. This study aims to investigate visits by insects and variation in floral temperatures of Rafflesia gradutensis during flowering. The flower was observed to be visited by green fly Lucilia sericata and weaver ant Oecophylla sp. The number of visits L. sericata was 617 times and 337 times by Oecophylla sp, in which most of the visits occur during mid-day. The average observed highest surface temperatures of were 28.40C (perigone) and 28.70C (diaphragm), which were slightly above the air temperature of 27.80C. The temperature experiences a gradual increase from the morning till the noon, and then it decreased toward late afternoon. The results of the floral temperatures indicate endothermy in R. gradutensis. However, thermo-regulation related to endothermy needs further investigation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Insect visits and variation of floral temperatures during blossoming of Rafflesia gradutensis

2023

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“…The altitude of the place is 257 m above sea level. The condition of the research site is clay textured, C-organic <2%, and total N 0.1-0.5% [9]. Determination of the sample using the purposive sampling method.…”

Section: Research Locationmentioning

confidence: 99%

A safety factor of old trees Pterocarpus indicus Willd. in Bogor Botanic Gardens

Helmanto¹,

Damayanti²,

Rachmadiyanto³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Trees have a vital role in human life, including as a part of the urban forest area. The tree health assessment is an important activity to support tree safety and stability in an urban forest. Bogor Botanic Garden is the most extensive botanic garden in Indonesia, with a large collection. The study aims to determine the health condition of old trees (Pterocarpus indicus Willd.) in the Bogor Botanic Gardens and measure the safety factor’s magnitude. The method used was an evaluation generated based on a sound velocity from Arborsonic’s tool. The measurement of appearance parameters was carried out to complete the information in determining the biomechanical strength of the tree. Four large and old trees, about 170 years old, were chosen in this study. The results showed that decay to hollowness in the trunk varied from 4% to 58%. The biomechanical analysis calculates the safety factor and t/R ratio, revealing that one tree had moderate risk and others possessed low risk. Further investigation to ensure the tree condition should be carried in terms of risk mitigation of tree management.

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“…Soil fertility refers to the capacity of the soil to supply necessary nutrients in an accessible form and in a suitable equilibrium. [1][2][3][4] . Nitrogen (N) is an essential fertilizer that is used in relatively large amounts compared to other fertilizers by plants [5][6][7][8][9][10], so that N fertiliser is generally needed in larger amount than other fertilisers.…”

Section: Introductionmentioning

confidence: 99%

Pretreatment method standard normal variate (SNV) and baseline shift correction (BSC) on the NIRS-based soil spectrum for rapid prediction of soil nitrogen content

Mechram,

Ayu,

Farni

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Enhancing agricultural production quality is a crucial role of nitrogen fertilization. Generally, the utilization of nitrogen fertilizer can promote plant growth, impart a more intense green hue to leaves and stems, and significantly augment biomass production. However, excessive application of nitrogen fertilizers can result in substantial cultivation cost increase and serious environmental degradation. Hence, it’s important to regulate the nitrogen content within the soil. The primary goal of this research is to employ the NIRS technique to rapidly and eco-friendly predict soil nitrogen content. Soil samples were obtained from farmlands situated in the Aceh Besar district, with spectral data gathered within a wavelength range of 1000 – 2500 nm at 0.2 nm intervals.. NIRS and Partial Least Square (PLS) spectrum data were used to make a prediction model of the nitrogen harvesting element. The results showed that the PLS method with SNV (R=0,72) and BSC (R=0,73) pretreatment showed predictive model capabilities that were almost the same as the raw data (R=0,75), although there was a slight improvement, this suggested that nitrogen elements in Aceh Besar region have not or can use the model with the suggestion to increase the amount of data and improve the treatment of the soil harvester method so that the nitrous content elements present in the ground do not easily evaporate so as to provide better model prediction results.

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Evaluasi Kesuburan Tanah Pada Berbagai Tutupan Lahan Di Kebun Raya Bogor

Cited by 10 publications

References 20 publications

Insect visits and variation of floral temperatures during blossoming of Rafflesia gradutensis

Insect visits and variation of floral temperatures during blossoming of Rafflesia gradutensis

A safety factor of old trees Pterocarpus indicus Willd. in Bogor Botanic Gardens

Pretreatment method standard normal variate (SNV) and baseline shift correction (BSC) on the NIRS-based soil spectrum for rapid prediction of soil nitrogen content

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