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PENGARUH PEMUPUKAN DAN WAKTU PEMANENAN TERHADAP PRODUKSI ANTOSIANIN DAUN DAN KUISERTIN UMBI TANAMAN DAUN DEWA (GYNURA PSEUDOCHINA (L.) DC)1 Tripatmasari, Mustika Tripatmasari; Arifin Aziz, Sandra; Ghulamahdi, Munif
Agrovigor Vol 7, No 1 (2014): Maret
Publisher : University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrovigor.v7i1.1428

Abstract

Daun dewa (Gynura pseudochina (L.) DC) merupakan tanaman obat yang mempunyai beberapa khasiat penting yaitu sebagai penurun panas, anti tumor atau kanker, dan obat kulit. Kandungan kimia daun dewa yaitu antosianin dan flavonoid. Penelitian ini bertujuan: (1) menemukan kombinasi pemupukan dan waktu panen daun dewa yang tepat di lapang untuk menghasilkan senyawa antosianin daun dan kuersetin umbi tinggi; (2) menentukan produksi total senyawa antosianin daun dan kuersetin umbi daun dewa. Penelitian menggunakan rancangan petak terpisah (split plot design), Petak utama adalah Pupuk (P) ditempatkan sebagai (tanpa pemupukan; pupuk kotoran sapi (20 ton/ha) + NPK (Urea=300kg/ha, SP36=100 kg/ha, KCl=50 kg/ha), pupuk kotoran sapi (20 ton/ha) + NPK (Urea=300kg/ha, SP36=100 kg/ha, KCl=50 kg/ha) + MgSO4 (50 kg/ha) dan anak petak adalah waktu panen (W) (4, 5.5, 7 bulan). Hasil penelitian menunjukkan bahwa pemupukan nyata meningkatkan tinggi tanaman, jumlah daun, panjang dan lebar daun, lebar daun dan luas daun hingga 8 (MST). Perlakuan pupuk kotoran sapi (20 ton/ha) dan waktu panen 4 bulan nyata meningkatkan bobot basah daun tertinggi (38,83 g) dan meningkatkan produksi total antosianin dauntertinggi (13,41 mg/ tanaman). Perlakuan pupuk kotoran sapi (20 ton /ha) + NPK (300kg/ha urea, 100 kg /ha SP36, 50 kg/ha KCl) nyata meningkatkan rata-rata produksi total quercetin umbi (59.74 mg/tanaman). Semua peubah menunjukkan pola linier negatif setelah umur 16 MSTKata kunci: Gynura pseudochina (L.) DC), pemupukan, waktu panen, antosianin daun, kuersetin umbi
RESPON ANATOMI DAN FISIOLOGI AKAR KEDELAI TERHADAP CEKAMAN KEKERINGAN Rosawanti, Pienyani; Ghulamahdi, Munif; Khumaida, Nurul
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 43 No. 3 (2015): 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 (536.956 KB) | DOI: 10.24831/jai.v43i3.11243

Abstract

ABSTRACTDrought stress in crop occurs due to imbalance between demand and supply of water. Crop responses to drought stress depend on their genotypes. Drought stress causes anatomical changes and root damage. The objective of this research was to study the effect of drought stress on anatomy and physiology of soybean root. The research was conducted at Laboratory of Microtechnique, Department of Agronomy and Horticulture, Bogor Agricultural University in November 2013. A Completely Randomized Design with two factors was used in the research i.e. soybean genotypes (Wilis, PG 57-1, SC 39-1) and PEG (0, 20%) with three replications. The result showed that genotype and PEG affected the size of the cortex, stele, and xylem. PG 57-1 genotype showed the decrease of cortical thickness, diameter of stele and the diameter of xylem, on the other hand, in SC 39-1, there was an increase. Drought stress (PEG 20%) could also cause damage to the root membrane as indicated by the occurrence of lipid peroxides. Wilis and PG 57-1 were tolerant while SC 39-1 was sensitive to drought stress.Keywords:cortex, lipid peroxides, PEG, Schiff?s reagent, xylem
CANOPY MICROCLIMATE MODIFICATION WITH REFLECTIVE MULCHES UNDER OIL PALM AND ITS ROLE TO SOYBEAN GROWTH Hidayat, Taufan; Koesmaryono, Yonny; Impron, Impron; Ghulamahdi, Munif
Agromet Vol. 34 No. 1 (2020): JUNE 2020
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.34.1.1-10

Abstract

Land utilization under oil palm plantation is constrained by the condition of low light intensities. Modification of the microclimate through the use of reflective mulch, as a reflector, will increase its ability to reflect the land surface radiation under the tree stand. This modification may suitable for intercropping system between soybean and oil palm. The study aimed to determine the effect of microclimate modification, using reflective mulch, under the stand of oil palm, and to evaluate its effect on soybean productivity. The research was conducted at PTPN-VIII Cimarga Banten using a nested random design with two factors and three replications each. The first factor is the oil palm age, which consists of: (i) control (open land), (ii) 4 years, (iii) 5 years, and (iv) 8 years age of oil palm. The second factor is the reflective mulch, as a solar radiation reflector, which consists of three levels: (i) without mulch (control), (ii) inorganic reflective mulch/silver black plastic mulch, and (iii) organic reflective mulch/dried oil palm leaves. The application of inorganic and organic reflective mulch increased the distribution of reflected land surface radiation (59%-157%), reduced the soil temperature fluctuation (0.30C-1.20C), and maintained soil water content (45.2%-45.8%). An increased of plant growth rates (56%-86%), relative growth rates (16%-21%), and seed weight production per plant (74.8%-86.2%) also reported, as well as the reduction of the etiolation ratio (9.6%-12.5%). The use of organic and inorganic reflective mulches can improve the microclimate and increase the production of soybean under intercopping system with oil palm.
THE EFFECTS OF CUTTING HEIGHTS AND INTERVALS OF DEFOLIATION ON PRODUCTIVITY AND NUTRIENT CONTENT OF BRACHIARIA HUMIDICOLA(RENDLE) SCHWEICK Anis, Selvie Diana; Chozin, Muhamad Ahmad; Hardjosoewignyo, Soedarmadi; Ghulamahdi, Munif; Sudradjat, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 3 (2011): 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 (151.969 KB) | DOI: 10.24831/jai.v39i3.13482

Abstract

The productivity of forage is strongly influenced by cutting height and interval of defoliation. Experiment was conducted at the Research Institute for Industrial Plants and Other Palm (BALITKA) Manado since June 2008 until April 2009. The objective of the experiment was to find out the effects of intensity and intervals of defoliation on dry weight production and the quality of nutrients. The experiment was arranged in factorial RCBD. The intensity of defoliation was based on cutting height, i.e. 5, 10, 15 cm, whereas the intervals of defoliation were 30, 45, 60 day and 456.54 Degree Days (DD). The data of dry weight production, leaf stem ratio, nutrient quality were collected. The results showed that there were significant effects of treatments on all parameters. Productivity of B. humidicolai terms of high dry weight yield, high leaf stem ratio and crude protein, low crude fiber and acid detergent fiber (ADF) content were found in the interaction of intensity 10 cm with the interval of defoliation among the vegetative development stage of 30 and 45 days, as well as the interval of defoliation based on heat unit accumulation of 456.54 DD. The research implies that a cutting height at 10 cm and interval of defoliation as mentioned above is ideal for B. humidicola. Utilization of growing degree days (GDD) to determine the appropriate time for defoliation is considerable under this experiment.Keywords: B. humidicola, defoliation, forage, nutrient, productivity
PENGARUH CEKAMAN KEKERINGAN DAN UMUR PANEN TERHADAP PERTUMBUHAN DAN KANDUNGAN XANTHORRHIZOL TEMULAWAK (CURCUMA XANTHORRHIZA ROXB.) Khaerana, ,; Ghulamahdi, Munif; Purwakusumah, Edi Djauhari
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): 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 (69.632 KB) | DOI: 10.24831/jai.v36i3.1383

Abstract

The research was conducted from November 2005 until May 2006 to determine growth and production of the Curcuma xanthorrhiza based on agronomical, physiological variables, and bioactive (xanthorrhizol) content.  The experiment was arranged in a completely randomized design with two factors and three replications.  The first factor consisted of 4 level of drought stress i.e: 100% field capacity (FC) (as control), 50% FC started at 2 weeks before harvesting (wbh),  50% FC started at 4 wbh,  and 50% FC started at 6 wbh.  The second factor comprised of 2 harvest times i.e. 5 months and 7 months.  The result showed that drought stress decreased plant growth and productivity, but increased accumulation of proline.  The harvesting time significantly increased the agronomic character, but did not significantly increase proline content.  The older samples contained more xanthorrhizol than the younger samples.   Key words: Curcuma xanthorrhiza, drought stress, harvesting time, plant growth,  xanthorrhizol.
LAJU PERTUMBUHAN DAN PRODUKSI JINTAN HITAM (NIGELLA SATIVA L.) DENGAN APLIKASI PUPUK KANDANG SAPI DAN FOSFAT ALAM Ridwan, Taopik; Ghulamahdi, Munif; Kurniawati, Ani
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 2 (2014): 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 (223.567 KB) | DOI: 10.24831/jai.v42i2.8435

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ABSTRACT Black cumin (Nigella sativa L.) is a medicinal plant and spices belongs to the Ranunculaceae family. Black cumin seed contains some  secondary compounds and rich in nutrition that are beneficial  to health. The objective of this research was to investigate the effect of organic fertilizer rates on plant growth and production of black cumin (Nigella sativa L.). This research was conducted at Manoko Lembang, Bandung Barat from October 2012 to January 2013. The experiment was arranged in a randomized complete block design with three replications. The treatment consists of two factors, i.e. cow manure and rates of rock phosphate. Rates of cow manure applied were 0, 10, 20, and 30 ton ha-1, and rates of rock phosphate were 0, 40, 80, and 120 kg P2O5 ha-1. The results showed that cow manure increased plant height, leaf number, branch  number, flower  number, fresh weight and dry weight of branch, leaf and total plant weight. Rock phosphate fertilizer increased  leaf  area  and  leaf  area index of plant. Fertilizers that can efficiently increase production was 10 tons cow manure ha-1 and 40 kg P2O5 ha-1.Keywords: cow manure, growth, Nigella sativa L, production, rock phosphate
PHOSPORUS SUFFICIENCY FOR GROWTH AND PRODUCTION OF SOYBEAN UNDER SATURATED SOIL CULTURE IN MINERAL AND PEATY SOILS: KECUKUPAN HARA FOSFOR PADA PERTUMBUHAN DAN PRODUKSI KEDELAI DENGAN BUDIDAYA JENUH AIR DI TANAH MINERAL DAN BERGAMBUT Bachtiar, Bachtiar; Ghulamahdi, Munif; Melati, Maya; Guntoro, Dwi; Sutandi, Atang
Jurnal Ilmu Tanah dan Lingkungan Vol 18 No 1 (2016): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (370.752 KB) | DOI: 10.29244/jitl.18.1.21-27

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The research objective is to determine the dosage and frequency of given of P fertilizer on soybean varieties in soil mineral and peaty mineral under saturated soil culture in tidal land. The research was conducted in mineral and peaty mineral soil of tidal area types B and C in the District of Tanjung Lago, Banyuasin Regency, Province of South Sumatra from April to August 2014. This study used split plots. Willis and Tanggamus varieties were main plots, application time (0, 0 and 4 MST) were on subplot, and fertilizer dose (0, 36, 72, 108 kg P2O5 ha-1) was on sub-sub plot. Experiment results showed that soybean productivity in peaty mineral soil was lower than mineral soil. In peaty mineral soil, the application time of phosphorus at 0 and 4 MST was able to increase growth and productivity of soybean, while phosphorus application time on mineral soils was better at 0 and 4 MST of planting time on mineral soils. The dose of 108 kg P2O5 ha-1 increased the productivity of soybean in peaty mineral soils, while a dose of 72 kg P2O5 ha-1 was better in mineral soil. In peaty mineral soil, interaction (Tanggamus, application at 0 and 4 MST as well as 72 kg P2O5 ha-1), showed the highest productivity of soybean (2.83 ton ha-1). Meanwhile, interaction (Tanggamus, application at 0 and 4 MST as well as 72 kg P2O5 ha-1) showed the highest productivity of soybean (3.8 ton ha-1), respectively in mineral soil under saturated soil culture techniques in tidal land.  Keywords: Dose of fertilizer, Glycine max (L) Merr., phosphorus, soil acidity, variety
STUDI SERAPAN HARA N, P, K DAN POTENSI HASIL LIMA VARIETAS PADI SAWAH (ORYZA SATIVA L.) PADA PEMUPUKAN ANORGANIK DAN ORGANIK Sugiyanta, ,; Rumawas, Fred; Chozin, M. A.; Mugnisyah, Wahju Qamara; Ghulamahdi, Munif
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): 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 (54.9 KB) | DOI: 10.24831/jai.v36i3.1377

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The objective of the research was to study the nutrition uptake (nitrogen, phosphorus, and potassium,) and the grain production of five rice varieties representing modern, new plant type and local varieties under application of inorganic, organic and combined inorganic-organic fertilization. Five rice varieties were Way Apoburu and IR-64 (modern varieties), Midun and Sarinah (local varieties from Sukabumi and Garut, respectively), and Fatmawati (new plant type variety).  Five fertilizer treatments were (1) full recommendation dosage of inorganic fertilizer (250 kg urea/ha, 100 kg SP-36/ha, and 100 kg KCl/ha), (2) ¼ recommendation dose of inorganic fertilizer + rice straw, (3) ½ recommended dose of inorganic fertilizer + rice straw, (4) rice straw, and (5) green manure from Crotalaria juncea biomass. The results showed that there was no specific response of rice varieties to the fertilization treatments, even though there was specific nutrient uptake pattern and yield of each variety, and there was significant effect of fertilizer treatment to nutrient uptake and rice yield. Nutrient uptake and grain yield indicated that nutrient imobilisation occurred at 1stseason, however the availability of N, P, K nutrients increased at 2nd and 3rdseason on rice straw and green manure treatments. Rice straw application caused lower nutrient uptake and grain yield than full dosage inorganic fertilizer at 1st season but both were not significantly different at 2nd and 3rdseason.  Application of rice straw with  ½ dosage of inorganic fertilizers was not significantly different from full dosage of inorganic fertilizers in nutrient uptake and grain yield. Modern varieties showed higher level of N absorption than that of new  type variety although it was not significantly different with that of local varieties, whereas the P and K uptake of modern varieties was lower than that of local and new plant type varieties. The modern varieties also showed higher level of dry grain per hill than that of local and new plant type varieties. However yield per ha of all varieties tended to be similar.   Key words: uptake, efficiency, mineral nutrition, variety, lowland rice
PENGARUH PENGELOLAAN AIR DAN GENOTIPE PADI TERHADAP KERACUNAN BESI DAN PRODUKTIVITAS PADI DI LAHAN PASANG SURUT TIPE LUAPAN B DI SUMATERA SELATAN Harahap, Siti Maryam; Ghulamahdi, Munif; Aziz, Sandra Arifin; Sutandi, Atang; Miftahudin, ,
Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Vol 17, No 2 (2014): Juli 2014
Publisher : Jurnal Pengkajian dan Pengembangan Teknologi Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Effect of Water Management and Rice Genotypes to Against Toxicity of Iron and Productivity of Rice in Tidal Land Type B in South Sumatera. Tidal land is one of the alternative land to support increased productivity of rice, but rice productivity in this area is still low, and the land utilization is not optimal yet. One factor is high iron content in the soil that can be toxic to plants. The purposes of this study were (1) to determine the effect of water management and rice genotype, as well as their interaction on the percentage of leaf bronzing, growth and yield of rice in tidal lands, (2) to select an alternative combination of water management and rice genotypes that may increase rice yields in tidal land. This study was conducted from February until June 2013 in the tidal area with type B overflow, Mulia Sari village, Banyu Asin regency, South Sumatera. The experimental design used was a split plot design with three replications. The main plot was water management with four levels, while the subplot was rice genotypes consisted of three genotypes. The results showed that water management and its interactions with plant genotypes had significant effect only on the percentage of bronzing, Fe content in shoot, and Fe content in root crops, while the plant genotype significantly affected all observed variables. The use of genotypes tolerant to iron toxicity (Indragiri) combined with (form stagnant and saturated water management) drainage with intervals of two weeks could give yield 6.8 and 6.2 t/ha respectively.Keywords : Water management, genotype paddy, tidal landABSTRAKLahan pasang surut merupakan salah satu lahan alternatif untuk mendukung peningkatan produksi padi, tetapi produksi padi di lahan ini masih rendah, dan pemanfaatan lahannya belum optimal. Salah satu faktor penyebabnya adalah adanya senyawa besi dalam tanah yang dapat meracuni tanaman. Tujuan penelitian ini adalah (1) untuk mengetahui pengaruh pengelolaan air dan genotipe tanaman padi serta interaksinya terhadap hasil padi di lahan pasang surut, (2) memilih alternatif kombinasi pengelolaan air dan genotipe tanaman padi yang sesuai dan dapat meningkatkan hasil padi di lahan pasang surut. Penelitian ini dilaksanakan bulan Februari – Juni 2013 di lahan pasang surut tipe luapan B, Desa Mulia Sari, Kabupaten Banyu Asin Sumatera Selatan. Rancangan yang digunakan adalah Rancangan Petak Terpisah dengan tiga ulangan. Sebagai petak utama adalah pengelolaan air, yang terdiri dari empat taraf, sedangkan sebagai anak petak adalah genotipe padi, yang terdiri dari tiga genotipe (IRH108, IR64 dan Indragiri). Hasil penelitian menunjukkan bahwa pengelolaan air dan interaksinya dengan genotipe tanaman berpengaruh nyata terhadap persentase bronzing, kandungan Fe di tajuk, kandungan Fe di akar dan hasil tanaman sedangkan genotipe tanaman berpengaruh nyata terhadap semua peubah yang diamati. Penanaman genotipe tanaman toleran terhadap keracunan besi (genotipe Indragiri) yang dikombinasikan dengan drainase berinterval dua minggu dapat memberikan hasil masing-masing 6,8 dan 6,2 t/ha.
PENGARUH TINGGI PANGKASAN BATANG UTAMA DAN JUMLAH CABANG PRIMER YANG DIPELIHARA TERHADAP PRODUKSI MINYAK JARAK PAGAR (JATROPHA CURCAS L.) Raden, Ince; Purwoko, Bambang S.; Hariyadi, ,; Ghulamahdi, Munif; Santosa, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 2 (2009): 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 (92.721 KB) | DOI: 10.24831/jai.v37i2.1409

Abstract

The objective of this research was to study shoot architecture in relation to growth, increase production and seed oil content through various stem pruning and number of primary branches. This research was conducted using Randomized Complete Block Design with single factor. It consisted of ten treatments, i.e., K=kontrol, T20= height of stem pruning at 20 cm from soil and without control on number of primary branches, T20-2=height of stem pruning at 20 cm from soil and two primary branches, T20-3= height of stem pruning at 20 cm and three primary branches, T30= height of stem pruning at 30 cm and without control on number of primary branches, T30-2= height of stem pruning at 30 cm and two primary branches, T30-3=height of stem pruning 30 cm and three primary branches, T40=height of stem pruning at 40 cm and without control on number of  primary branches, T40-2=height of stem pruning at 40 cm and two primary branches, and T40-3=height of stem pruning 40 cm and three primary branches. The results showed that stem pruning increased number of primary branches. The highest seed oil content and seed production was achieved T40 and T30-3 treatments i.e., 323.81 g/plant or 0.810 ton/ha and 320.61 g/plant or 0.802 ton/ha with seed oil yield 244.56 kg/ha and 276.61 kg/ha, respectively.   Key words : Jatropha curcas L., seed oil content, pruning, primary branches