Yakup Parto
Fakultas Pertanian, Universitas Sriwijaya, Indralaya, Ogan Ilir (OI) Sumatera Selatan 30662

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EVALUASI KERAPATAN TANAM DAN METODE PENGENDALIAN GULMA PADA BUDIDAYA PADI TANAM BENIH LANGSUNG DI LAHAN SAWAH PASANG SURUT Marpaung, Imelda S.; Parto, Yakup; Sodikin, Erizal
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 2, No 1 (2013)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (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; Parto, Yakup; Hayati, Renih; Priadi, Dwi Putro
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 4, No 1 (2015): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (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).
KARAKTERISTIK DAN KEMELIMPAHAN NEPENTHES DI HABITAT MISKIN UNSUR HARA Mardhiana, Mardhiana; Parto, Yakup; Hayati, Renih; Priadi, Dwi Putro
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 1, No 1 (2012)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (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. 
PERGESERAN JENIS GULMA AKIBAT PERLAKUAN BAHAN ORGANIK PADA LAHAN KERING BEKAS TANAMAN JAGUNG (ZEA MAYSL.) Fitriana, Maria; Parto, Yakup; Munandar, ,; Budianta, Dedik
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 41 No. 2 (2013): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.743 KB) | DOI: 10.24831/jai.v41i2.7515

Abstract

The objective of this study was to examine shifting of weeds species on upland previously planted with corn and treated with several organic matters. The experiment was conducted from August 2010 until January 2011, at Bakung Indralaya South Sumatera. Randomized complete block design was used with 7 treatments and 3 replications. The treatments were types of organic matters applied, consisted of planted Mucuna bracteata, planted Vigna unguiculata, compost of M. bracteata, compost of corn stalk, buried corn stalk, cow manure, and fallow. The plot size was 5 m x 20 m with 5 sampling plots. The sampling plot size was 1 m x 1 m each. The results showed that there were change in weeds composition after organic matter treatments. There were 18 species of weeds before treatments which were dominated by Panicum maximum, Eleusine indica, and Borreria laevis. After the organic matter treatments there were 22 weeds species, which classified into 17 genus and 11 families, floristically. The main weeds were Richardia brasiliensis, Borreria alata, and Eleusine indica. The weeds diversity index was less to medium with the point of 1.33 to 1.85. The community coefficient between before and after organic matter treatment was < 30% , while the average of communities coefficient between organic matter treatments above 75%.Keywords: diversity, organic matter, shifting species, weeds
ZEOLITE UTILIZATION AS A CATALYST AND NUTRIENT ADSORBENT OF AN ORGANIC FERTILIZER PROCESS FROM PALM OIL MILL EFFLUENT AS RAW MATERIAL Nursanti, Ida; Budianta, Dedik; Napoleon, Adipati; Parto, Yakup
Journal of Tropical Soils Vol 18, No 3: September 2013
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2013.v18i3.%p

Abstract

Palm Oil Mill Effluent (POME) cannot be directly used as an organic fertilizer source due to its high Biological Oxygen Demand (BOD) thus it is not  environmentally safely. To increase the high quality of organic fertilizer obtained, the liquid wastes are needed to be processed in order to decrease the BOD to degrade both the soluble and suspension materials of organic materials. The altenative process to be conducted to make a better quality of POME is by adding the adsorbent. The aim of the research was to study the effect of zeolite utilization and duration of hydrolysis process in order to increase the nutrients content and to decrease the BOD of POME. The research was conducted at  the PT Sumbertama Nusa Pertiwi Jambi, Indonesia in August 2012 until February 2013. The sample of POME was taken from the inlet of the factory?s  acidulating pool. There were several doses of zeolite  as treatments which were 0, 5, 10, 15% and several durations of hydrolysis process which were 1,2,3 and 4 weeks. Active zeolite was added to POME and then it was fermented with different hydrolysis duration times as mentioned above. The research showed that application of  zeolite  and  duration of hydrolysis process significantly affected the pH, N,  P, K, Al, Fe, BOD of  POME and the adsorption of  N, P, K, Al, Fe by zeolite. It can be concluded that 10% of zeolite incubated  in  two weeks duration of hydrolysis process produced higher nutrient of N, P, K  with BOD, Al, Fe and pH matched  with the waste quality standard. The highest efficiency of  N, P and K adsorbent was show by the 15% of zeolite  which was incubated for two weeks of hydrolysis process.Keyword: Hydrolysis process duration, nutrient content, palm oil mill effluent, zeolite.[How to Cite: Nursanti I, D Budianta, A Napoleon and Y Parto. 2013.Zeolite Utilization as a Catalyst and Nutrient Adsorbent of an Organic Fertilizer Process From Palm Oil Mill Effluent as Raw Material. JTrop Soils 18 (3): 177-184. Doi: 10.5400/jts.2013.18.3.177][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.3.177] REFERENCESAno AO and CI Ubochi. 2007. Neutralization of soil acidity by animal manures: mechanism of reaction. Afr J Biotechnol 6: 364-368.Budianta D. 2005. Potensi limbah cair pabrik kelapa sawit sebagai sumber hara untuk tanaman perkebunan. Dinamika Pert 20: 273-282 (in Indonesian).Djajadi B Helianto and N Hidayah. 2010. Pengaruh media tanam dan frekuensi pemberian air terhadap sifat fisik, kimia dan biologi tanah serta pertumbuhan jarak pagar. 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