The Effect of El-Nino 2015 on the Rubber Plant (Hevea Brasiliensis) Growth in the Experimental Field Sembawa Research Centre

Saputra, Jamin; Stevanus, Charlos Togi; Cahyo, Andi Nur

doi:10.14203/widyariset.2.1.2016.37-46

Cited by 8 publications

(10 citation statements)

References 3 publications

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“…Cancer damage to rubber plants could be prevented by applying fungicides to the tapping grooves after tapping [17]. In addition, tapping not too often and making tapping grooves that are not too deep to hit the stem can also be used as an effort to prevent cancer damage [18]. Routine maintenance of community forests is very much needed.…”

Section: Results and Disscusionmentioning

confidence: 99%

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Mapping of Tree Health Categories in Community Forests in Lampung Province

Safe’i

Upe

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The sustainability of community forests in supporting various aspects of community life can be supported by maintaining their potential. One of them is through an assessment of the health of the trees. They know the condition of the damage and the actions that must be taken. The utilization of Geographic Information Systems (GIS) in assessing the health condition of the forest is very much needed to facilitate management through the health condition of a forest that is described spatially. The data analysis results showed 17 clusters of observation plots used in total. The cluster plots are spread over 5 clusters in good condition, and 1 cluster in lousy condition in East Lampung Regency. 6 clusters are in good condition, and 1 cluster is in moderate condition in Pesawaran Regency. And 2 clusters in good condition and 2 clusters in terrible condition in Tulang Bawang Regency. Overall, the average health condition of trees in community forests in Lampung Province is still in good condition. However, good management is needed to prevent the spread of damage from becoming more expansive. Preventive measures can be taken with good maintenance, pest eradication, and more organized harvesting. dilakukan dengan pemeliharaan yang baik salah satunya dengan pemberantasan hama penyakit serta pemanenan yang lebih terorganisir.

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Section: Results and Disscusionmentioning

confidence: 99%

“…Climatic conditions significantly influence the damage [22]. Several cases show that pest attacks continue to increase due to climatic conditions that support the growth of these pests [18]. A humid climate is usually a condition that is vulnerable to pests and diseases [23].…”

Section: Results and Disscusionmentioning

confidence: 99%

Mapping of Tree Health Categories in Community Forests in Lampung Province

Safe’i

Upe

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…The value of tree damage (CLI) is presented in Table 2 below. is usually caused by disease attacks, which impact the low quality of rubber and losses to farmers [13].…”

Section: Measurement Of Productivity Vitality and Tread Quality Indic...mentioning

confidence: 99%

Assessment of the Health of Community Forests Based on Rubber (Hevea brasiliensis) in Tulang Bawang Regency

Selvira

Safe’i

Yuwono

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The knowledge and awareness of community forest managers about the importance of forest health are still relatively low, especially in community forests based on rubber (Hevea brasiliensis) plantations. Whereas through forest health measurement, reliable data and information will be obtained that can be used to ensure the quantity and quality of community forests as a form of management decisions for community forest managers. This study aimed to determine the health status of rubber plantation-based community forests in Ujung Gunung Village, Menggala District, Tulang Bawang Regency. The stages of implementing this research include: determining the number of clusters based on management prescriptions (planting year and spacing), making cluster plots based on the design of Forest Health Monitoring (FHM) clusters, collecting data by measuring forest health indicators (productivity, vitality and site quality) based on the FHM technique, data processing and analysis were carried out by calculating forest health values. The results showed that the health status of rubber community forests had a range of values from 3.97 to 7.03. The average value of forest health based on rubber plants in Ujung Gunung Village, Menggala District, Tulang Bawang Regency is 5.59, which is included in the medium value range. Thus, the value of community forest health status is moderate.

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“…Rubber cultivars differ in clone types [47]. In Sumatra, the most widely planted clone is PB 260 [48], which is characterized by a high production potential and strength against wind disturbances [49]. It is also one of the latexproducing clones recommended for their high yield characteristic [50].…”

Section: Experimental Sitesmentioning

confidence: 99%

Using a Bottom-Up Approach to Scale Leaf Photosynthetic Traits of Oil Palm, Rubber, and Two Coexisting Tropical Woody Species

Ali

Nugroho

Moyano

et al. 2021

Forests

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Rainforest conversion to woody croplands impacts the carbon cycle via ecophysiological processes such as photosynthesis and autotrophic respiration. Changes in the carbon cycle associated with land-use change can be estimated through Land Surface Models (LSMs). The accuracy of carbon flux estimation in carbon fluxes associated with land-use change has been attributed to uncertainties in the model parameters affecting photosynthetic activity, which is a function of both carboxylation capacity (Vcmax) and electron transport capacity (Jmax). In order to reduce such uncertainties for common tropical woody crops and trees, in this study we measured Vcmax25 (Vcmax standardized to 25 °C), Jmax25 (Jmax standardized to 25 °C) and light-saturated photosynthetic capacity (Amax) of Elaeis guineensis Jacq. (oil palm), Hevea brasiliensis (rubber tree), and two native tree species, Eusideroxylon zwageri and Alstonia scholaris, in a converted landscape in Jambi province (Sumatra, Indonesia) at smallholder plantations. We considered three plantations; a monoculture rubber, a monoculture oil palm, and an agroforestry system (jungle rubber plantation), where rubber trees coexist with some native trees. We performed measurements on leaves at the lower part of the canopy, and used a scaling method based on exponential function to scale up photosynthetic capacity related traits to the top of the canopy. At the lower part of the canopy, we found (i) high Vcmax25 values for H. brasiliensis from monoculture rubber plantation and jungle rubber plantation that was linked to a high area-based leaf nitrogen content, and (ii) low value of Amax for E. guineensis from oil palm plantation that was due to a low value of Vcmax25 and a high value of dark respiration. At the top of the canopy, Amax varied much more than Vcmax25 among different land-use types. We found that photosynthetic capacity declined fastest from the top to the lower part of the canopy in oil palm plantations. We demonstrate that photosynthetic capacity related traits measured at the lower part of the canopy can be successfully scaled up to the top of the canopy. We thus provide helpful new data that can be used to constrain LSMs that simulate land-use change related to rubber and oil palm expansion.

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The Effect of El-Nino 2015 on the Rubber Plant (Hevea Brasiliensis) Growth in the Experimental Field Sembawa Research Centre

Abstract: Article history

Cited by 8 publications

References 3 publications

Mapping of Tree Health Categories in Community Forests in Lampung Province

Mapping of Tree Health Categories in Community Forests in Lampung Province

Assessment of the Health of Community Forests Based on Rubber (Hevea brasiliensis) in Tulang Bawang Regency

Using a Bottom-Up Approach to Scale Leaf Photosynthetic Traits of Oil Palm, Rubber, and Two Coexisting Tropical Woody Species

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