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Journal : Jurnal Lahan Suboptimal

Karakteristik dan Kemelimpahan Nepenthes di Habitat Miskin Unsur Hara Mardhiana Mardhiana; Yakup Parto; Renih Hayati; Dwi Putro Priadi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 1 (2012)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.029 KB) | DOI: 10.33230/JLSO.1.1.2012.7

Abstract

Mardhiana et al., 2012. The Characteristics and Abundance of Nepenthes of Nutrient-poor Habitats. JLSO 1(1):50-56.This research aimed at assesing the characteristics and abundanceof Nepenthespopulation in nutrient-poor habitats. This study was conducted at two locations, Talang Kelapa village, Banyuasin Km 10, and Pasir Putih village, Sukajadi, Banyuasin Km 18. Observations were made on  the soil chemical and physical properties, morphology  and population abundance  of Nepenthes. The result showed  that N. mirabilis was the only species found in  Talang Kelapa and Pasir Putih.  Nepenthes upwere able to grow well in very poor soil nutrients. Natural habitat in Pasir Putih with sandy soil  and water log condition gave better effect on the morphology and abundance in than in Talang Kelapa with  clay soil and dry.  The ratio of  Nepenthes abundance in Pasir Putih to that in Talang Kelapa was 3:2. 
Evaluasi Kerapatan Tanam dan Metode Pengendalian Gulma pada Budidaya Padi Tanam Benih Langsung di Lahan Sawah Pasang Surut Imelda S. Marpaung; Yakup Parto; Erizal Sodikin
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 2 No. 1 (2013)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (347.545 KB) | DOI: 10.33230/JLSO.2.1.2013.48

Abstract

Weed is one of limiting factors in the direct-seeded rice cultivation. Cost incurred by farmers to control weeds is still quite high. Various techniques of weed control need to be evaluated to obtain the most effective weed control in tidal land. The experiment was conducted in tidal land fields in the Telang  Sari village Tanjung Lago Sub District Banyuasin District during November 2012−March 2013. The experiment was arranged in a split plot design with planting density (K) as main plot and weeding methods (P) as sub plot. Five levels of planting density at 20, 40, 60, 80 and 100 kg rice seed/ha and four levels of weeding methods (manual weeding, dimethyl amine herbicide, penoxulam, and no weeding) were used in the experiment. The treatment was repeated 3 times and applied in 4×3m plot. Components of plant growth and yield of rice plants were measured and analyzed using Microsoft Excel and SPSS 17.0. The results showed that methods of weed control did not significantly affect plant height, plant biomass at 4 weeks after seeding and number of tillers, but significantly affect number of empty grain and filled grain per panicle. Both planting density and method of weed control significantly affect yield, but no significant interaction between treatments. Planting density did not significantly affect plant biomass from age 8 weeks after seeding. Yield of planting density at 80 kg seed/ha was not significantly different from the yield of 40−60 seed/ha. Method of weed control was significantly affecting the rice yield. Weed control can increase crop yields by 37.7%.
Kajian Teknik Pemberian Hara Terhadap Pertumbuhan dan Perkembangan Nepenthes mirabilis Mardhiana Mardhiana; Yakup Parto; Renih Hayati; Dwi Putro Priadi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 4 No. 1 (2015): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (458.978 KB) | DOI: 10.33230/JLSO.4.1.2015.140

Abstract

The objective of this research was to study the effect of nutrient fertilization on the growth and development of nepenthes (Nepenthes mirabilis). The research was conducted from October 2011 until March 2012 at Sukarami village, Palembang, Indonesia. Factorial randomized block design with two treatment factors was applied. The first factor was NPK fertilizer dosage which consisted of three levels: Po = no fertilizer, P1 = 5 g, P2 = 10 g. The second factor was number of ants: S0 = none, S1 = 20, S2 = 40, S3 = 60. The results indicated that NPK fertilizer application of 5-10 g to the planting media could increase plant growth and development, particularly in plant height, stem girth, and leaf number of N. mirabilis. Giving 60 ants per plants into nepenthes pitcher could yield the largest pitcher number, 3-4 pitcher per plant. Combination of 5 g NPK and 20 ants, similarly, combination of 10 g NPK and 0 ants resulted in the largest leaf increment (10-11 leaves). Combination of 0 NPK and 60 ants resulted in the largest pitcher number (3-4 pitcher per plant).
Performance of intercropping corn on manure oil palm plantations on dry land Umar Harun, Muhammad; Yakup, Yakup; Seprila, Marlin; Priatna, Satria Jaya; Sopiana, Rina; Habibulloh, Habibulloh
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 14 No. 1 (2025): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.14.1.2025.718

Abstract

The intercroping area (IC) is around 0.5 ha from one hectare of mature oil palm (YH). The research aimed to observe the growth and yield of corn from the Bisi 16 variety in oil palm plantations from the SJ 5 variety and the effect of corn as IC on oil palm. The research location was in Mesuji Raya Sub-district, Ogan Komering Ilir, South Sumatra, from April 2024 to July 2024. The interspace number of oil palm of 1 ha were 12  and it was six interspaces as the object research was as frond staking. The research method used was non-experimental.  Each of front staking had two sample plots of corn (3×3 m), and samples  selected for each plot were 15 crops.  For oil palm (8×8×8 m) two samples of crops were beside the corn plot.  The total of  oil palm samples was 24 crops from oil palm IC, and compared to 24 crops from  monoculture.  The research results showed that the growth of IC corn was lower for plant height (16%), and the reduction in corn yield (26%) from one ha compared to the description. The total  yield from corn IC was approximately 2.09 tons of corn shells, which were lower from monoculture description. The growth and yield of oil palm IC were better than monoculture, with an increase a number of fruit bunches (9%) and FFB weight (11%).  Corn is an intercrop/polyculture crop in oil palm plantations after one or two years of production.
Co-Authors , Munandar A. I. Munawar A. Y.A Wiralaga Abdillah, Mohamad Rizal Abdul, Elfis Mus Adipati Napoleon Adipati Napoleon Adriansyah, Fikri Amar, Muhammad Amin Fauzi, Amin Andesta, Andesta Angraeni, Dian Elsi Angraini, Lili Apria, Apria Apriansa, Azharudin Asep Indra M. Ali Astuti Kurnianingsih Azzahra Jenyca, Zsa-Zsa Bela, Triwulan Maryanita Benyamin Lakitan Budianta, D. Budianta, Deddik Chaya, Muhardianto Dedik Budianta Djafar, Asri Dwi Asmono Dwi Putro Priadi Dwi Setyawan Dwisatria, Novian Erizal Sodikin Erna Siaga, Erna Firdaus Sulaiman, Firdaus Fitra Gustiar, Fitra Fitri Ramadhani Fitri Ramadhani Fritra Gustiar Gani, Trias Ghifari, Muhammad Al Gobel, Dedi Habibulloh, Habibulloh Haikal, Umair Harun, M Umar Hasanuddin Hasanuddin Heni Agustina Hunafa, Gatmir Zaki Hunowu, Zet Ibrahim, Meimoon Ida Nursanti Idrus Usu Iin Siti Aminah, Iin Siti Illyas, Rosli Md. Imelda S. Marpaung Irawan, Bobby Irmawati Irmawati Irmawati Irmawati Isa, Nirwan Ismed Inonu Jaafar, Nardiah Rizwana Karundeng, Deby Rita Lamuda, Ilyas Laoli, Jaeristia M. B. Prayitno M. Umar Harun M. Umar Harun Mardhiana Mardhiana Maria Fitriana Marlin Sefrila Marlina Marlina Masiaga, Novaliastuti Mery Hasmeda Miftakhul Huda Moh. Rolli Paramata Muda, Strayker Ali Muhakka Muhakka Muhammad Ammar Mulyadi Mulyadi Munandar Munandar Munandar Munandar Munandar Munandar Musdalifah Musdalifah Nailatul Fadilah, Lya Nopit, Nopit Yohanes Nurshanti, Dora Fatma Olfin Ishak Potale, Marlen Pratama, Dody R. Hayati Rahayu, Leni Renih Hayati Ria, Rofiqoh Purnama Risna rusdan Robiyati Podungge Sabaruddin Sabaruddin Said, Dian Saprudin Saprudin, Saprudin Satria Jaya Priatna, Satria Jaya Satyawati, Tara Sefrila, Marlin Seprila, Marlin Sholehah, Nur Simamora, Markus William Kaisar Sjafei, Gusdi Khamsaldin Sodikin, E. Sopiana, Rina Susilawati, Susilawati Suwignyo, R.A. Suyanto, Moh. Afan Suyanto, Mohamad Afan Teguh Achadi Timur, Widya Ulfah, Febrinita Umar Harun, Muhammad Umar Harun, Umar Wandri, Ruli Warsito Warsito Yernelis Syawal Zaidan, Zaidan Zulkipli Zulkipli Zulkipli Zulkipli