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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Cassowary

D. Wasgito Purnomo

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Author-ID : 349436

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Environmental Science

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Evaluasi Pertumbuhan dan Hasil Beberapa Genotipe Cabai (Capsicum annuum L.) untuk Toleransi terhadap Cekaman Aluminium D. Wasgito Purnomo; Bambang S. Purwoko; Sudirman Yahya; Sriani Sujiprihati; Irdika Mansur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 3 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The aim of this research was to evaluate growth and yield in response to aluminum (Al) stress in several genotypes of chilli (Capsicum annuum L.). The research was conducted in University Farm of IPB, Cikabayan, Bogor from February to August 2006. Ultisol soils from Gajrug (Lebak, Banten) in polybag with pH 4.2, Al-dd 30.08 me/ 100 g and Al-saturated 83.81% was used in this experiment. Eight genotypes of chilli (4 tolerant and 4sensitive) were tested on two different conditions, in media without Al-stress condition (Al-saturated 0.77%) and wich Al-stress (Al-saturated 60.85%). Characters observed were plant height, shoot dry-weight, total number of fruits per plant, number of fruit harvested per plant, fruit dimension (length and diameter), fruit weight harvested per plant, and weight of each fruit. The results showed that there were differences of response to Al-stress among genotypes on the study. PBC 619 and Jatilaba were selected as tolerant genotypes, while Cilibangi 3 and Helm were sensitive. This evaluation of agronomic characters for tolerant and sensitive to Al-stress appeared very consistent with root bioassay results. Based on this result, the root bioassay method can be used to select chili genotypes for Al-stress tolerance. Key words: Growth and yield evaluation, aluminum stress, Capsicum annuum, ultisol soil.

Tanggap Pertumbuhan dan Hasil Cabai (Capsicum annuum L.) terhadap Inokulasi Fungi Mikoriza Arbuskula pada Tanah Ultisol D. Wasgito Purnomo; Bambang S. Purwoko; Sudirman Yahya; Sriani Sujiprihati; Irdika Mansur; , Amisnaipa
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

The aim of this research was to test the utilization of arbuscular mycorrhizal fungus (AMF) to improve adaptation ability of chili to aluminum (Al) stress based on growth and yield response in four genotypes of chili (Capsicum annuum L.). The research was carried out at University Farm of IPB in Cikabayan from September 2006 to Maret 2007. The media was Ultisol from Gajrug (Lebak, Banten) in polybag. Four genotypes of chili, PBC 619 and Jatilaba (Al tolerant genotypes), and Cilibangi 3 and Helm (Al sensitive genotypes) were treated with and without inoculation of Gigaspora margarita, and planted further in media without Al stress (Al saturation 0.77%) and Al stress (Al saturation 60.85%). Variables observed were degree of AMF infection, root length, plant height, shoot dry weight, number of harvested fruits, fruit length, fruit weight and weight of harvested fruits. The results showed that inoculation of G. margarita effectively decreased negative influence of Al stress by increasing plant height, shoot dry weight, number of harvested fruit, fruit length, weight per fruit and weight of harvested fruits. Inoculation of G. margarita to Al sensitive genotypes was more advantageous than to tolerant genotypes. The Al sensitive genotypes were adapted to Al stress if they were inoculated with G. margarita. In Al stress condition, inoculation of G. margarita to Al sensitive genotypes increased weight of harvested fruits up to 94.49% in Cilibangi 3 and 80.37% in Helm. Key words: Adaptation, aluminum stress, arbuscular mycorrhizal fungus, Capsicum annuum L., Ultisol

Penentuan Kebutuhan Pupuk Kalium untuk Budidaya Tomat Menggunakan Irigasi Tetes dan Mulsa Polyethylene , Amisnaipa; Anas D. Susila; Rykson Situmorang; D. Wasgito Purnomo
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

Tomato var. Ratna was grown with polyethylene mulched and drip irrigation on Inceptisol Dramaga with very low soil K and organic matter during two seasons to K critical concentration, and potassium fertilizer requirement. Experiment used single location approach with three steps of activity. The first experiment was established in 2004 to develope artificial soil K status by adding K: 0X (0), 1/4X (193.098), 1/2X (386.195), 3/4X (579.293) and X (772.39 kg K2O ha-1), where X was amount of K equal to 772.39 kg K2O ha-1 or 1287.32 kg KCl ha-1. The second experiment was calibration K study, the experiment arranged in split plot design, with main plot was K status (form first experiment) and sub-plot was K aplication (0, 40, 80, 160, and 320 kg K2O ha-1) in 4 replicated. Third experiment was optimation of K rate. The result showed that interval of soil K availability extracted by Morgan Vanema was divided 5 classes, they were very low (< 58.25 ppm K), low (58.25-103.25 ppm K), medium (103.25-205.00 ppm K), high (=205 ppm K) and very high (>205.00 ppm K). Potassium recommendation for tomato on Inceptisol with drip irrigation and polyethylene mulch which has very low, low, medium, high and very high K content was 180.20, 131.30 and 82.25 kg K2O ha-1or equal to 300.33, 218.83, and 137.08 KCl ha-1 respectively. Key words: Fertilizer, Potassium, calibration, Lycopersicon esculentum.

Pengaruh konsentrasi Plant Growth Promoting Rhizobacteria terhadap intensitas kerusakan akibat penyakit layu fusarium (Fusarium oxysporum f. sp lycopersici) dan produksi tanaman tomat (Lycopersicum esculentum Mill.) Wahyudi; Ruimassa, Reymas M. R.; Martanto, Eko Agus; Mogea, Rina A.; Purnomo, D. Wasgito
Cassowary Vol 7 No 1 (2024): Januari
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v7.i1.219

ABSTRACT: The research aims to determine the effect of PGPR application on the incidence of fusarium wilt disease and tomato plant production. The research was carried out using a Randomized Group Design (RAK) with one treatment factor, namely the PGPR dose. Treatment was made in five levels, namely D0 (control/no PGPR), D1 (5 cc PGPR/liter air), D2 (10 cc PGPR/liter air), D3 (15 cc/liter air) and D4 (20 cc PGPR/liter air air). The results of in vitro PGPR testing provided an inhibitory response to Fusarium growth with an average of 47.32% on PDA media and 63.12% on NA media. The PGPR dose treatment tested did not have a significant effect on plant height, number of leaves, production characteristics and disease intensity, except for the average number of branches per tree, root length and root weight. Giving a dose of 20 cc/liter is the best dose to increase root character and number of branches.

Pertumbuhan dan daya hasil beberapa genotipe jagung merah Unipa di Distrik Sentani Kabupaten Jayapura Wara, Veronica; Mawikere, Nouke Lenda; Purnomo, D. Wasgito; Prabawardani, Saraswati; Ilona Noya, Alce; Heskiel Wospakrik, Andrean
Cassowary Vol 8 No 2 (2025): April
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i2.224

ABSTRACT: This study aims to determine the growth and yield of several genotypes of Unipa red corn. The research was conducted in the Sentani District, Jayapura Regency, from October 2021 to February 2022. The experiment was laid out in a Randomized Block Design (RBD) with a single treatment factor, consisting of 9 Unipa red corn genotypes, 1 local Jayapura genotype, and 1 national genotype. The observed variables included plant height, stem diameter, number of stem segments, length of stem segments, harvest age, cob length without husks, cob weight without husks, cob diameter without husks, weight of 100 seeds, seed weight per plot, seed weight per hectare, and seeds/cobs color. The results showed that: 1) The growth components of 11 corn genotypes vary greatly, and genotype treatment significantly affects the characteristics of plant height 7 MST, stem diameter 7 MST, and stem internode length; 2) The Unipa AMP-6 genotype had the highest productivity of 6.57 tons/ha; 3) The average harvest age of Unipa AMP corn was 87-88 days after planting; and 4) The genotype with the largest percentage of homogeneous seed color was AMP Unipa-8 (90.44%).

Co-Authors , Amisnaipa Anas Dinurrohman Susila Bambang S. Purwoko Eko Agus Martanto Heskiel Wospakrik, Andrean Ilona Noya, Alce Irdika Mansur Mawikere, Nouke Lenda Prabawardani, Saraswati Reymas M.R. Ruimassa Rina A. Mogea Rykson Situmorang Sriani Sujiprihati Sudirman Yahya WAHYUDI Wara, Veronica

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