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

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Karakteristik dan Kemelimpahan Nepenthes di Habitat Miskin Unsur Hara Mardhiana, Mardhiana; Parto, Yakup; Hayati, Renih; Priadi, Dwi Putro
Jurnal Lahan Suboptimal Vol 1, No 1 (2012)
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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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 Marpaung, Imelda S.; Parto, Yakup; Sodikin, Erizal
Jurnal Lahan Suboptimal Vol 2, No 1 (2013)
Publisher : Jurnal Lahan Suboptimal

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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%.
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 : Bogor Agricultural University

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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
PENGARUH PENGGUNAAN PUPUK UREA DAN APLIKASI HERBISIDA PRA-TUMBUH TERHADAP PERTUMBUHAN BIBIT KARET (Hevea brasiliensis Muell.Arg.) DAN GULMA DI PEMBIBITAN Parto, Yakup; Syawal, Yernelis; Achadi, Teguh
Agrovigor Vol 5, No 2 (2012): SEPTEMBER
Publisher : Agrovigor

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Abstract

A Research was carried out at green house of Agriculture Faculty of Sriwijaya University from October 2010 to January 2011 using split-split plot design. Main plot were pre-emergence herbicides :  H0 = no preemergence herbicide treatment (control), H1 = preemergence herbicide of methyl metsulfuron, and H2 = preemergence herbicide of ametryn. Subplot were dose of urea fertilizers : U0 = no urea fertilizer treatment (control), U1 = 2 gram of urea fertilizer per plant, and U2 = 4 gram of urea fertilizer per plant. Sub-sub plot were preemergence dosages : D0 = 0 liter formulation per ha, D1 = 1,5 liter formulation per ha, and D2 = 3,0 liter formulation per ha. Parameters measured were diameter of sleep eye stum, time of bud emergence, height of bud, number of leaves, percentage of growth seedling, weed growth, and efficiency of weed control. Results showed that kind of preemergence herbicides, urea fertilizer dosages, and preemergence herbicide dosages were no significant effect to weed dry weight due to weed growing were relative small. This supposed because soil which used as growth media no enough contain weed propagule, so the following research are need conducted.
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

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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