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Karakter Agronomi dan Fisiologi Varietas Cabai Merah pada Kondisi Cekaman Genangan Susilawati, ,; Suwignyo, Rujito Agus; Munandar, ,; Hasmeda, Mery
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 40, No 3 (2012): JURNAL AGONOMI INDONESIA
Publisher : Bogor Agricultural University

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Abstract

The research objective was to study the agronomic and physiological characteristics of red chilli (Capsicum annuumL.) varieties under waterlogging stress. These studies were conducted at two locations: in Palembang, South Sumatra, from February to August 2010 and in Bogor in West Java, from September to November 2010. Experiments in Palembang was using split plot design with three replications. The main plot was waterlogging treatment for 1, 2, 3 and 4 days. The subplot was red chilli varieties: Kiyo F1, Riawan, Ferosa, Bravo F1 and Laris. Experiments in Bogor was conducted without the use of experimental design; the same plant varieties were waterlogged for 2 and 4 days. The results showed that waterlogging caused root damages on all varieties. Kiyo F1 had better agronomic characters and high levels of tolerance than other varieties. The content of ethylene in all varieties increased with increasing time of waterlogging, except for Laris. In all varieties both leaf chlorophyll and tissue N content tend to decline with the increase in waterlogging duration. However Bravo F1 experienced an increase in the chlorophyll content whereas Kiyo F1 had an increase in N in the plant tissue. Keywords: agronomic character, physiological character, red chili, waterlogging
Agronomic Performance of Corn Population Selected for Nutrient Efficiency in Marginal Land Hayati, Renih; Munandar, ,; Lestari, Fitria K. S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 1 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Low soil fertility is the most important factor constraining corn (Zea mays L.) yield in marginal land due to soil acidity.  Corn cultivars with high nutrient efficiency and tolerance to soil acidity offer an alternative to solve the problem.  A Complex population had been formed by natural crossing among six cultivars/line expected to carry the nutrient efficiency character; Sukmaraga, Lamuru, Srikandi Kuning, Bisma, Bayu, and Toray and used as a genetic material in this study.  The objectives were (i) to evaluate the agronomic performance of complex population in marginal land under limited nutrient supply, (ii) to select the superior entries in each population for nutrient efficiency, and (iii) to identify the characters relate to yield (nutrient efficiency).  The selection of nutrient efficiency was based on the ear dry weight produced per plant (yield).  The experiment was conducted in marginal land at Agro Techno Park, Indralaya, South Sumatra in January to April 2008.  Randomized Complete Block Design with four replications was used.  The treatment was number of entries that grouped into six populations based on a female parent.  Plants were fertilized with Urea, SP-36, and KCl at 30% of standard rate.  Sukmaraga population had the best agronomic performance among six populations evaluated. The superior entries selected were top 10% of the total entries in each population with ear weight more than 150 g. All the characters (ear length and diameter, plant height, leaf chlorophyll, leaf numbers above the ear, and ear leaf area) related to yield (nutrient efficiency) but plant height is the only character measured before anthesis.  The results suggest that Sukmaraga population had use nutrient more efficiently than the other populations and plant height may be used as selection criterion in early screening large numbers of corn entries or lines for nutrient efficiency.        Key words:  Agronomic characters, corn, marginal land, nutrient efficiency
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
Pertumbuhan Akar dan Tajuk Serta Hasil Beberapa Varietas/Galur Jagung pada Kondisi Defisien Hara Hayati, R.; Munandar, ,; Irmawati, ,
Zuriat Vol 19, No 1 (2008)
Publisher : Zuriat

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Abstract

Genotip tanaman dapat memiliki mekanisme berbeda dalam mengembangkan mekanisme morfologi perakaran untuk meningkatkan penyerapan dan pemanfaatan hara oleh seluruh bagian tanaman. Penelitian bertujuan untuk mengevaluasi sistem perakaran dan tajuk serta hasil dan komponen hasil tanaman jagung pada kondisi defisien hara. Percobaan dilaksanakan di rumah kaca Fakultas Pertanian Universitas Sriwijaya dan di lahan kering masam di Balai Agro Teknologi Terpadu (ATP) Sumatera Selatan. Rancangan Percobaan adalah Rancangan Petak Terbagi dengan tiga ulangan. Petak utama di rumah kaca adalah konsentrasi unsur hara yaitu H1 (konsentrasi standar larutan Kimura B 100%) dan H2 (30% dari konsentrasi standar) sedangkan di lapangan yaitu H1 (pemupukan optimum: kapur 2 t/ha, pupuk kandang 5 t/ha, ZA/Urea, SP-36 dan KCl 300, 100, 50 kg/ha) dan H2 (pemupukan sub  optimum: tanpa kapur dan pupuk kandang, ZA/Urea, SP-36, KCl 30% dosis optimum). Anak petak adalah 18 varietas/galur jagung untuk di rumah kaca dan 10 varietas untuk di lapangan. Genotipe jagung mempunyai tanggapan yang berbeda terhadap kondisi defisien hara berdasarkan sistem perakaran dan tajuk. Varietas Lamuru mempunyai pertumbuhan akar maupun tajuk yang baik yang dicirikan oleh akar yang lebih panjang, jumlah akar lebih banyak, bobot kering akar dan luas daun lebih besar, serta tanaman lebih tinggi dibandingkan varietas/galur lainnya di rumah kaca. Penurunan hasil (bobot tongkol/petak) di lapangan berkorelasi nyata dengan tinggi tanaman (r = 0.476), indeks luas daun (r = 0.722), jumlah biji/tongkol (r = 0.659), maupun jumlah tongkol/petak (r = 0.749).
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

Show Abstract | Original Source | Check in Google Scholar | Full PDF (328.743 KB)

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
Karakter Agronomi dan Fisiologi Varietas Cabai Merah pada Kondisi Cekaman Genangan Susilawati, ,; Suwignyo, Rujito Agus; Munandar, ,; Hasmeda, Mery
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 40, No 3 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

Show Abstract | Original Source | Check in Google Scholar | Full PDF (388.593 KB)

Abstract

The research objective was to study the agronomic and physiological characteristics of red chilli (Capsicum annuumL.) varieties under waterlogging stress. These studies were conducted at two locations: in Palembang, South Sumatra, from February to August 2010 and in Bogor in West Java, from September to November 2010. Experiments in Palembang was using split plot design with three replications. The main plot was waterlogging treatment for 1, 2, 3 and 4 days. The subplot was red chilli varieties: Kiyo F1, Riawan, Ferosa, Bravo F1 and Laris. Experiments in Bogor was conducted without the use of experimental design; the same plant varieties were waterlogged for 2 and 4 days. The results showed that waterlogging caused root damages on all varieties. Kiyo F1 had better agronomic characters and high levels of tolerance than other varieties. The content of ethylene in all varieties increased with increasing time of waterlogging, except for Laris. In all varieties both leaf chlorophyll and tissue N content tend to decline with the increase in waterlogging duration. However Bravo F1 experienced an increase in the chlorophyll content whereas Kiyo F1 had an increase in N in the plant tissue. Keywords: agronomic character, physiological character, red chili, waterlogging