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All Journal Sodality: Jurnal Sosiologi Pedesaan BIOTROPIA - The Southeast Asian Journal of Tropical Biology Journal of Tropical Soils AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) MAJALAH ILMIAH GLOBE Jurnal Bina Praja JTERA (Jurnal Teknologi Rekayasa) Jurnal Penelitian Kelapa Sawit Journal of Tropical Crop Science Journal of Environmental Science and Sustainable Development Jurnal Teknik Sipil Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital
Kukuh Murtilaksono
Departemen Tanah dan Sumberdaya Lahan, Fakultas Pertanian, Institut Pertanian Bogor, Jl. Meranti, Kampus IPB Darmaga, Bogor 16680.
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Social Sciences Transportation Veterinary

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Journal : Journal of Tropical Crop Science

 1 
Water Balance in Oil Palm Plantation with Ridge Terrace and Nephrolepis biserrata as Cover Crop Ariyanti, Mira; Yahya, Sudirman; Murtilaksono, Kukuh; Suwarto, Suwarto; Siregar, Hasril H.
Journal of Tropical Crop Science Vol 3 No 2 (2016): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1114.492 KB) | DOI: 10.29244/jtcs.3.2.35-55

Abstract

The existence of oil palm plantations as a possible cause of drought in the surrounding areas in Indonesia is a critical issue. Therefore, information related to the effects of oil palm plantations on the surrounding environment in terms of soil water content (SWC) availability is needed. Soil and water conservation techniques in the form  of ridge terracing and cover crops,  such as Nephrolepis biserrata,  can be  expected to potentially improve soil water  reserves, especially in the dry-season, by accumulating water  in the rainy season.  This study aimed to study the effects of N. biserrata as cover crop, together with the potential effects of ridge terraces, on the water balance in mature oil palm plantations.  The research was conducted in mature oil palm plantations, Afdeling III block 375 (planted in 1996) and block 415 (planted in 2005), Rejosari Unit, PT Perkebunan Nusantara (PTPN) VII in Natar District, South Lampung Regency, Indonesia, from August 2014 to January 2015. The research was based on of setting up 15 m x 20 m experimental plots with the following treatments:  (i) without ridge terraces and without N. biserrata (G0T0); (ii) without ridge terraces but with N. biserrata (G0T1); (iii) with ridge terraces but without N. biserrata (G1T0); (iv) with ridge terraces and with N. biserrata (G1T1).   Hydrology parameter data were collected for each treatment plot; water balance was calculated using a water balance equation. The results showed that the use of the cover crop N. biserrata in combination with ridge terraces helped improving SWC reserves by approximately 71% and 12%, respectively.  The use of N. biserrata as a cover crop reduced the rate of water loss by percolation and run-off, by approximately 36% and 80%, respectively, in an area where the annual rainfall is above 2,400 mm per year.  The presence of N. biserrata shortened the period of SWC deficit by extending the period of a water surplus by 70 days when compared with ridge terracing alone (which reduced the period of SWC by 50 days).
The Roles of Asystasia gangetica (L.) T. Anderson and Ridge Terrace in Reducing Soil Erosion and Nutrient Losses in Oil Palm Plantation in South Lampung, Indonesia Asbur, Yenni; Yahya, Sudirman; Murtilaksono, Kukuh; Sudradjat, Sudradjat; Sutarta, Edy Sigit Sutarta Sigit
Journal of Tropical Crop Science Vol 3 No 2 (2016): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.122 KB) | DOI: 10.29244/jtcs.3.2.49-55

Abstract

Asystasia gangetica (L.) T. Anderson is a weed commonly found on oil palm plantations and can be used as cover crop for mature oil palm plantations due to its tolerance to shading. The use of cover crop is  a soil conservation technique to support sustainable availability of soil nutrients by reducing erosion and nutrients loss, particularly during the rainy seasons. This research aims to determine the roles of A. gangetica as cover crop for measures against erosion and nutrients loss in mature oil palm plantation. This research was conducted in oil palm plantation, Unit Rejosari, PT Perkebunan Nusantara (PTPN) VII, District of Natar, South Lampung Regency from August 2014 to April 2015. The research used split block design in randomized complete block design with two factors and six replications. The main plots were ridge terrace, namely with and without ridge terrace. The sub plots were cover crops, namely with and without cover crops A. gangetica. The results show that using A. gangetica as cover crops in mature oil palm plantations effectively minimized erosion and loss of organic C, N, P, and K by 95.7%, 93.4%, 96.0%, and 90.0 %, respectively. The use of cover crop became more effective when combined with ridge terrace and reduced erosion by 94.1% and loss of organic C, N, P and K by 99.1%, 99.2%, 90.0% and 98.5%, respectively.
Co-Authors A.A. Ketut Agung Cahyawan W Baba Barus Bakri, Subhan Bambang Pramudya Budi Nugroho Bunasor Sanim Eddy Sigit Sutarta Edy Sigit Sutarta Endriatmo Soetarto Febrianti, Nur Halim Akbar, Halim Hasril Hasan Siregar Hidayat Pawitan I Nengah Surati Jaya Indriyati, Lilik Khursatul Munibah Kuzyakov, Yakov M. Arif Yusuf Magriaty, Riry Mira Ariyanti Naik Sinukaban Nilasari, Afrisna Nurman Hakim Nurwadjedi Nurwadjedi, Nurwadjedi Parjono, Parjono Paulus B.K. Santoso Prima Jiwa Osly Putra, Gilang Sukma Rahutomo, Suroso Rudi P Tambunan, Rudi P Saiful Akhyar Lubis Samsuri Samsuri Siregar, Hasril H. Sitanala Arsyad Slamet Budi Yuwono Sri Lestari Munajati, Sri Lestari Sudirman Yahya Sudradjat Sudradjat Sunarti Suprajaka Suprajaka Suria Darma Tarigan Sustama, Achmad Surya Adi Sutarta, Edy Sigit Sutarta Sigit Syaiful Anwar Syamsul Arifin Widiatmaka Witjaksana Darmosarkoro Wiwin Ambarwulan Yayat Hidayat Yenni Asbur Yusanto A Nugroho, Yusanto A Yusdinar, Haki