Bowen ratio and evapotranspiration dynamics of oil palm

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MUHAMMAD FAJAR ASYURA
TANIA JUNE
RESTI SALMAYENTI

Abstract

Abstract. Asyura MF, June T, Salmayenti R. 2023. Bowen ratio and evapotranspiration dynamics of oil palm. Intl J Trop Drylands 7: 37-45. To optimize its biophysical processes, plant needs water and this requirement can be quantified as Evapotranspiration (ET). There are various methods for estimating ET from a vegetated surface, and Bowen ratio is one method commonly used for agricultural purposes. We use Bowen ratio method to estimate ET from oil palm (Elaeis guineensis Jacq.) plantation in PT. Perkebunan Nusantara VI, Batang Hari, Jambi Province, Indonesia for the period 2014-2015 using observed micrometeorology data and looked at the strength of micrometeorological components in influencing the daily and diurnal patterns, which include net radiation (Rnetto), heat fluxes (latent LE and sensible H), actual vapor pressure (ea), soil moisture (SM), wind speed (WS), air temperature (Ta), ground heat fluxes (G), and LE-H. We found that the daily pattern of Bowen ratio was strongly influenced by LE-H, LE, H, SM, shown by a correlation coefficient of -0.85, -0.75, 0.84, -0.58, respectively. The diurnal pattern of Bowen ratio was affected by ea with a correlation coefficient of -0.52, while daily ET was strongly influenced by Rnetto, LE-H, H, Bowen ratio with a correlation coefficient of 0.85, 0.95, -0.63, -0.75 respectively. WS, Ta, Rnetto, G, ea, RH and LE-H affected diurnal ET with a correlation coefficient of 0.72, 0.72, 0.96, 0.89, 0.51, -0.64 and 0.9, respectively. Within this period of 2014-2015 there were 7 months where rainfall was greater than ET (wet period December 2014 to April 2015, November 2015) and 5 months where rainfall was lower than ET (dry period May 2015 to October 2015). During this long dry period of 2015, caused by strong El Nino events, oil palms became vulnerable to drought.

2017-01-01

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References
Adriadi A, Chairul, Solfiyeni. 2012. Analisis vegetasi gulma pada perkebunan kelapa sawit (Elais quineensis jacq.) di Kilangan, Muaro Bulian, Batang Hari. Jurnal Biologi UNAND 1 (2): 108-115. [Indonesian]
Allen RG, Pereira LS, Raes D, Smith M. 1998. Crop Evapotranspiration (Guidelines for Computing Crop Water Requirements - FAO Irrigation and Drainage Paper 56, Rome.
Anggreany S, Lubis A, Sardi I. 2013. Persepsi petani terhadap aspek teknis komoditi kelapa sawit di Desa Ladang Peris Kecamatan Bajubang Kabupaten Batanghari. Jurnal Penyuluhan 9 (1): 88-94. DOI: 10.25015/penyuluhan.v9i1.9862. [Indonesian]
Apriyanto M, Fikri KNS, Siregar VA, Azhar A. 2020. Penyuluhan tentang peremajaan kelapa sawit dan legalitas lahan di Kecamatan Kempas Kabupaten Indragiri Hilir. JPM: Jurnal Pengabdian Masyarakat 1 (1): 1-6. DOI: 10.31219/osf.io/57qvs. [Indonesian]
Benny WP, Putra ETS, Supriyanta. 2015. Tanggapan produktivitas kelapa sawit (Elaeis guineensis Jacq.) terhadap variasi iklim. Vegetalika 4 (4): 21-34. [Indonesian]
Bruce P, Bruce A, Gedeck P. 2020. Practical Statistics for Data Scientists: 50+ Essential Concepts Using R and Python. O'Reilly Media, Sebastopol.
Chen J, Wen J, Kang S, Meng X, Tian H, Ma X, Yuan Y. 2020. Assessments of the factors controlling latent heat flux and the coupling degree between an alpine wetland and the atmosphere on the Qinghai-Tibetan Plateau in summer. Atmospheric Res 240: 1-9. DOI: 10.1016/j.atmosres.2020.104937.
Darkwah DO, Blay E, Amoatey H, Sapey E, Bakoume C, Agyei-Dwarko D. 2020. Genetic diversity and selection within natural duraoil palm accessions collected in Ghana for oil palm productivity improvement. Biodiversitas 21: 3534-3538. DOI: 10.13057/biodiv/d210815.
Evizal R, Wibowo L, Novpriasyah H, Sarno, Sari RY, Prasmatiwi FE. 2020. Keragaan agronomi tanaman kelapa sawit pada cekaman kering periodik. J Trop Upland Resour 2 (1): 60-68. DOI: 10.23960/jtur.vol2no1.2020.79. [Indonesian]
Göckede M, Kittler F, Kwon MJ, Burjack I, Heimann M, Kolle O, Zimov N, Zimov S. 2017. Shifted energy fluxes, increased Bowen ratios, and reduced thaw depths linked with drainage-induced changes in permafrost ecosystem structure. Cryosphere 11 (6): 2975-2996. DOI: 10.5194/tc-11-2975-2017.
Ilfan F, Arwin A. 2019. Potensi sumber daya air dalam rangka ketersediaan sumber air baku Kota Sungai Penuh, Bangko dan Sarolangun di subdas Batang Tembesi, DAS Batanghari, Provinsi Jambi-Zona Iklim Equatorial. Jurnal Engineering 1 (1): 42-52. DOI: 10.22437/jurnalengineering.v1i1.6285. [Indonesian]
June T, Dewi NWSP, Meijide A. 2018. Comparison of aerodynamic, bowen-ratio, and penman-monteith methods in estimating evapotranspiration of oil palm plantation. Agromet 32 (1): 11-20. DOI: 10.29244/j.agromet.32.1.11-20.
June T. 2002. Environmental Effects on Photosynthesis of C3 Plants: Scaling up from Electron Transport to the Canopy (Study Case: Glycine max L. Merr). [Dissertation]. Australian National University, Canberra. [Australian]
Kleidon A, Renner M. 2017. An explanation for the different climate sensitivities of land and ocean surfaces based on the diurnal cycle. Earth Syst Dynam 8 (3): 849-864. DOI: 10.5194/esd-8-849-2017.
Kuang W, Dou Y, Zhang C, Chi W, Liu A, Liu Y, Zhang R, Liu J. 2015. Quantifying the heat flux regulation of metropolitan land use/land cover components by coupling remote sensing modeling with in situ measurement. J Geophys Res: Atmospheres. 120 (1): 113-130. DOI: 10.1002/2014JD022249.
Molle BA, Larasati AF. 2020. Analisis anomali pola curah hujan bulanan tahun 2019 terhadap normal curah hujan (30 Tahun) di Kota Manado dan sekitarnya. Jurnal Meteorologi Klimatologi dan Geofisika 7 (1): 1-8. [Indonesian]
Neog P, Srivastava AK, Chakravarty NVK. 2005. Estimation and application of Bowen ratio fluxes over crop surfaces-an overview. J Agric Phys 5 (1): 36-45.
Pradiko I, Ginting EN, Darlan NH, Winarna, Siregar HH. 2016. Hubungan pola curah hujan dan performa tanaman kelapa sawit di Pulau Sumatra dan Kalimantan selama El Nino 2015. Jurnal Penelitian Kelapa Sawit 24 (2): 87-96. DOI: 10.22302/iopri.jur.jpks.v24i2.11. [Indonesian]
Putra RA, Astuti YTM, Hartati RM. 2017. Modifikasi nutrisi dan warna lampu pengaruhnya terhadap pertumbuhan bibit kelapa sawit pre nursery dengan sistem hidroponik. Jurnal Agromast 2 (1): 1-12. [Indonesian]
Saharjo BH, Velicia WA. 2018. Peran curah hujan terhadap penurunan hotspot kebakaran hutan dan lahan di empat provinsi di Indonesia pada tahun 2015-2016. Jurnal Silvikultur Tropika 9 (1): 24-30. DOI: 10.29244/j-siltrop.9.1.24-30. [Indonesian]
Schilperoort B, Gerrits MC, Luxemburg W, Rodríguez CJ, Vaca CC, Savenije H. 2018. Using distributed temperature sensing for Bowen ratio evaporation measurements. Hydrol Earth Syst Sci 22 (1): 819-830. DOI: 10.5194/hess-22-819-2018.
Singh LK, Jha MK, Pandey M. 2018. Framework for standardizing less data-intensive methods of reference evapotranspiration estimation. Water Resour Manag 32 (13): 4159-4175. DOI: 10.1007/s11269-018-2022-5.
Sirait MT. 2020. Analisis tataniaga kelapa sawit (Elaeis guineensis Jacq). (Studi kasus: Kecamatan Kualuh Selatan Kabupaten Labuhan Batu Utara). Agriprimatech 3 (2): 74-83. DOI: 10.34012/agriprimatech.v3i2.924. [Indonesian]
Suryadi S, Setyobudi L, Soelistyono R. 2013. Kajian intersepsi cahaya matahari pada kacang tanah (Arachis hypogaea L.) diantara tanaman melinjo menggunakan jarak tanam berbeda. Jurnal Produksi Tanaman 1 (4): 333-341. [Indonesian]
Syarovy M, Ginting EN, Santoso H. 2015. Respon morfologi dan fisiologi tanaman kelapa sawit (Elaeis guineensis Jacq.) terhadap cekaman air. Warta PPKS 20 (2): 77-85. [Indonesian]
Upreti H, Ojha CSP. 2018. Evaluation of the vapor pressure models in the estimation of actual vapor pressure and evapotranspiration. J Irrig Drain Eng 144 (11): 1-11. DOI: 10.1061/(ASCE)IR.1943- 4774.0001346.
Van Heerwaarden CC, de Arellano JVG, Gounou A, Guichard F, Couvreux F. 2010. Understanding the daily cycle of evapotranspiration: A method to quantify the influence of forcings and feedbacks. J Hydrometeorol 11 (6): 1405-1422. DOI: 10.1175/2010JHM1272.1.
Wagino, Tarigan SM, Febrianto EB. 2018. Respon pertumbuhan kelapa sawit (Elaeis Guineensis Jacq.) varietas dyxp dumpy pada kondisi stres air di pembibitan awal. Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian 3 (1): 17-26. DOI: 10.31289/agr.v3i1.1934. [Indonesian]
Wahyudi A. 2022. Strategi pengembangan perkebunan kelapa sawit di Provinsi Jambi. Jurnal Paradigma Ekonomika 17 (1): 31-44. DOI: 10.22437/jpe.v17i1.10744. [Indonesian]
Walls S, Binns AD, Levison J, MacRitchie S. 2020. Prediction of actual evapotranspiration by artificial neural network models using data from a Bowen ratio energy balance station. Neural Comput Appl 32 (17): 14001-14018. DOI: 10.1007/s00521-020-04800-2.
Xuanlan Z, Junbang W, Hui Y, Amir M, Shaoqiang W. 2021. The bowen ratio of an Alpine grassland in three-river headwaters, Qinghai-Tibet Plateau, from 2001 to 2018. J Resour Ecol 12 (3): 305-318. DOI: 10.5814/j.issn.1674-764x.2021.03.001.