Climbing the mountain fast but smart: Modelling rubber tree growth and latex yield under climate change

Yang, Xueqing; Blagodatsky, Sergey; Marohn, Carsten; Liu, Hongxi; Golbon, Reza; Xu, Jianchu; Cadisch, Georg

doi:10.1016/j.foreco.2019.02.028

Cited by 18 publications

(13 citation statements)

References 47 publications

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“…To this end, we collected data from the literature that performed modeling simulations. We found modeled data on net ecosystem exchange and latent heat flux from CRRI, Cambodia (11.6 • N, 103.3 • E; 57 m elevation) (SVAT-rubber model; [15]) and modeled latex harvest yield data from Neban Reserve (NR), China (22 • N, 100 • E; 680 m elevation) (LUCIA-rubber model; [16]). We performed CLM-rubber simulations at these two sites by essentially following a similar scheme as mentioned above and compared our results with the SVAT-rubber and LUCIA-rubber models.…”

Section: Comparing Clm-rubber Model With Other Modelsmentioning

confidence: 99%

“…For example, Kumagai et al [15] developed a soil-vegetation-atmosphere transfer model for rubber plantations (SVAT-rubber). They examined how canopy structure in the model affected carbon and water fluxes in central Cambodia, while Yang et al [16] used the Land Use Change Impact Assessment model to simulate rubber (LUCIA) and investigated how high altitudes and planting densities influenced the modeled biomass and latex yield of rubber plantations. It is worth noting that the former study considered only one site, and therefore their results could be site-specific.…”

Section: Introductionmentioning

confidence: 99%

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Implementing a New Rubber Plant Functional Type in the Community Land Model (CLM5) Improves Accuracy of Carbon and Water Flux Estimation

Ali

Fan

Corre

et al. 2022

Land

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Rubber plantations are an economically viable land-use type that occupies large swathes of land in Southeast Asia that have undergone conversion from native forest to intensive plantation forestry. Such land-use change has a strong impact on carbon, energy, and water fluxes in ecosystems, and uncertainties exist in the modeling of future land-use change impacts on these fluxes due to the scarcity of measured data and poor representation of key biogeochemical processes. In this current modeling effort, we utilized the Community Land Model Version 5 (CLM5) to simulate a rubber plant functional type (PFT) by comparing the baseline parameter values of tropical evergreen PFT and tropical deciduous PFT with a newly developed rubber PFT (focused on the parameterization and modification of phenology and allocation processes) based on site-level observations of a rubber clone in Indonesia. We found that the baseline tropical evergreen and baseline tropical deciduous functions and parameterizations in CLM5 poorly simulate the leaf area index, carbon dynamics, and water fluxes of rubber plantations. The newly developed rubber PFT and parametrizations (CLM-rubber) showed that daylength could be used as a universal trigger for defoliation and refoliation of rubber plantations. CLM-rubber was able to predict seasonal patterns of latex yield reasonably well, despite highly variable tapping periods across Southeast Asia. Further, model comparisons indicated that CLM-rubber can simulate carbon and energy fluxes similar to the existing rubber model simulations available in the literature. Our modeling results indicate that CLM-rubber can be applied in Southeast Asia to examine variations in carbon and water fluxes for rubber plantations and assess how rubber-related land-use changes in the tropics feedback to climate through carbon and water cycling.

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Section: Comparing Clm-rubber Model With Other Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Implementing a New Rubber Plant Functional Type in the Community Land Model (CLM5) Improves Accuracy of Carbon and Water Flux Estimation

Ali

Fan

Corre

et al. 2022

Land

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“…Maximum consumption of natural rubber has been reported in the tires of automobiles, which utilizes ~70% of the total production, and its demand has been predicted to increase by 30 megatons per year by the year 2030 (Cornish, 2017). The para rubber planting area is rapidly expanding into the Montane Mainland Southeast Asia including Grate Mekong Subregion (China, Vietnam, Thailand, Laos, Myanmar and Cambodia) (Golbon et al, 2018;Yang et al, 2019) and Peninsular Malaysia (Hazir et al, 2020).…”

Section: Academicpresmentioning

confidence: 99%

“…Para rubber cv. 'RRIM600' is a good candidate for plantation in Thailand and China with adaptation to drought, chilling and frost injuries and moderate yield (Priyadarshan et al, 2005;Gonçalves et al, 2011;Pethin et al, 2015;Yang et al, 2019). Elite clones of para rubber with high yield of latex, rapid growth, longlifetime tapping (20-30 years) and disease-resistant traits being developed through breeding programs (Supriya et al, 2019).…”

Section: Academicpresmentioning

confidence: 99%

True-to-type micropropagated plants of para rubber (Hevea brasiliensis Müll. Arg.) via somatic embryogenesis

Tisarum

Samphumphuang

Prommee

et al. 2020

Not Bot Horti Agrobo

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Plant micropropagation via somatic embryogenesis is a powerful technique for rapid mass propagation, especially in para rubber (Hevea brasiliensis Müll. Arg.). However, somaclonal variations are the major limitation of this process. To date, DNA fingerprinting, i.e., RAPD (Randomly Amplified Polymorphic DNA), Star Codon Targeted (SCoT), and SSRs (Simple Sequence Repeats), is one of the most successful technologies to detect the genetic fidelity in the somatic embryos. The aim of present study was to induce somatic embryos from inner integument explants of para rubber cv. ‘RRIM 600’ at different developmental stages and subsequent acclimatization and transplantation (under greenhouse and field conditions) of the propagated seedlings. The genetic stability of the plants derived from somatic embryos was also analysed in comparison to the mother plant using RAPD, SCoT and SSRs markers. Somatic embryos derived from inner integuments of 5-week-old immature seeds after pollination were more efficient than older and younger seeds. In addition, para rubber mother plants cv. ‘RRIM600’ and plants derived from somatic embryogenesis demonstrated the same pattern of DNA fragments, as confirmed by three PCR-based techniques, RAPD, SCoT and SSRs, whereas these in the pattern were different from ‘RRIT 226’, ‘PB 235’, ‘PB 251’, ‘PB 255’ and ‘BMP 24’. Interestingly, T2 plant was found to possess somaclonal variations when compared with mother plant. Based on the results, we confirm that the plants derived from somatic embryogenesis of para rubber cv. ‘RRIM 600’ were true-to-type to that of ‘RRIM 600’ master stock.

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“…Hasil simulasi yang dilakukan Thomas et al (2000) menunjukkan pada ketinggian tempat 810 m dpl di Lampung, matang sadap tanaman karet dicapai pada umur 7,9 tahun, lebih lama dibanding normal yang berkisar antara 5,0-5,5 tahun. Namun berdasarkan skenario perubahan iklim global, Yang et al (2019) memperkirakan karet yang ditanam pada ketinggian tempat > 900 m dpl akan mengalami peningkatan biomassa sekitar 28% dan hasil 48%. Hal ini membuka peluang bagi perbaikan pertumbuhan karet di daerah dengan ketinggian > 400 mdpl.…”

Section: Adaptabilitas Karet Pada Lahan Suboptimalunclassified

Role of Cultivation Technology and Planting Patterns of Farmer Choice for Improving Smallholding Rubber Productivity

Junaidi

2020

J. Litbang Pert.

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Smallholding rubber productivity in Indonesia is still relatively low due to low cultivation technology adoption. The characteristics of smallholder plantations, with limited land tenure and capital, require a specific approach compared to large plantations. This article is aimed to inform rubber cultivation innovations to improve smallholder rubber productivity. Land conservation can increase the opportunity for developing rubber in sub-optimal environments such as peatlands, tides and high-elevated areas. Plant breeding activities in Indonesia have resulted IRR superior clones series with high yield potential (more than 1,500 kg/ha/yr), vigorous growth, and resistance to main diseases. Modification of planting space can increase land productivity and alternative income for farmers during immature period. To obtain the high yield, the clonal typology harvesting system supported by latex diagnosis can optimize the potential of clones and prevent tapping panel dryness (TPD). To increase technology adoption at the farm level, the role of extension workers, farmer groups, and support from the government is required.Keywords: Rubber, farmers, technology, productivity AbstrakPERAN TEKNOLOGI BUDI DAYA DAN POLA TANAM PILIHAN PETANI DALAM MENINGKATKAN PRODUKTIVITAS KARET RAKYAT Produktivitas tanaman karet rakyat di Indonesia masih tergolong rendah, terutama disebabkan oleh adopsi teknologi budi daya belum optimal. Karakteristik perkebunan karet rakyat, terutama penguasaan lahan dan modal yang terbatas, memerlukan pendekatan spesifik dibanding perkebunan besar. Tulisan ini menginformasikan inovasi teknologi budidaya karet yang dapat meningkatkan produktivitas karet rakyat. Konservasi lahan dapat meningkatkan potensi pengembangan tanaman karet di lahan suboptimal seperti lahan gambut, pasang surut, dan daerah berelevasi tinggi. Pemuliaan tanaman di Indonesia telah menghasilkan klonklon unggul seri IRR dengan potensi hasil tinggi (rata-rata di atas 1.500 kg/ha/th), pertumbuhan jagur, dan tahan terhadap penyakit. Modifikasi pola tanam dapat meningkatkan produktivitas lahan dan sumber pendapatan petani selama tanaman belum menghasilkan (TBM). Untuk mendapatkan produksi yang tinggi dan berkelanjutan, sistem pemanenan lateks tipologi klon yang didukung oleh diagnosis lateks dapat mengoptimalkan potensi klon dan mencegah kering alur sadap (KAS). Untuk meningkatkan adopsi teknologi di tingkat petani diperlukan dukungan penyuluh, kelompok tani, dan pemerintah.Kata kunci: Karet, petani, teknologi, produktivitas.

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Climbing the mountain fast but smart: Modelling rubber tree growth and latex yield under climate change

Cited by 18 publications

References 47 publications

Implementing a New Rubber Plant Functional Type in the Community Land Model (CLM5) Improves Accuracy of Carbon and Water Flux Estimation

Implementing a New Rubber Plant Functional Type in the Community Land Model (CLM5) Improves Accuracy of Carbon and Water Flux Estimation

True-to-type micropropagated plants of para rubber (Hevea brasiliensis Müll. Arg.) via somatic embryogenesis

Role of Cultivation Technology and Planting Patterns of Farmer Choice for Improving Smallholding Rubber Productivity

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