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Journal of Agro Complex
Published by Universitas Diponegoro
ISSN : -     EISSN : 25974386     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Journal of Agro Complex (JOAC) is an open access, peer-reviewed journal that considers articles on all areas of agricultural sciences (Agro complex). Research areas include : plant growth and development, plant production, plant improvement, plant protection, plant ecology, plant physiology, seed production and certification, integrated farming, sustainable agriculture, agribusiness and agro industry.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 1, No 2 (2017)" : 6 Documents clear
Pertumbuhan dan produksi Okra (Abelmoschus esculentus) dengan berbagai pemupukan organik diperkaya batuan fosfat Imam Pranata; Dwi Retno Lukiwati; Widyati Slamet
Journal of Agro Complex Vol 1, No 2 (2017)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.095 KB) | DOI: 10.14710/joac.1.2.65-71

Abstract

Penelitian bertujuan untuk mengetahui pengaruh pemupukan organik diperkaya batuan fosfat terhadap pertumbuhan dan produksi okra. Penelitian menggunakan rancangan acak kelompok monofaktor dengan perlakuan pupuk T1. Batuan fosfat (BP), T2. Kompos azolla pinnata, T3. Pupuk kandang (pukan) sapi, T4. Pukan kambing, T5. Pukan ayam, T6. Kompos Azolla pinnata+BP, T7. Pukan sapi+BP, T8. Pukan kambing+BP, T9. Pukan ayam+BP, diulang sebanyak 3 kali. Parameter yang diamati tinggi tanaman, jumlah daun, jumlah buah, berat segar buah dan produksi bahan kering. Data dianalisis ragam dan uji lanjut dengan Duncan’s Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa perlakuan pukan ayam diperkaya BP menghasilkan tinggi tanaman 154,00 cm dan jumlah daun 22,56 helai lebih tinggi dibanding perlakuan lainnya. Perlakuan kompos azolla, pukan sapi, kambing, dan ayam diperkaya BP menghasilkan berat buah segar lebih tinggi dibanding kompos dan pukan tanpa diperkaya BP. Perlakuan kompos dan pukan diperkaya BP maupun tidak, menghasilkan jumlah buah yang tidak berbeda nyata. Pukan kambing+BP dan pukan ayam+BP menghasilkan bahan kering masing-masing 107,79 dan 105,53 g nyata lebih tinggi dibanding perlakuan lainnya. Perlakuan batuan fosfat tunggal nyata lebih rendah untuk semua parameter dibanding perlakuan lainnya.
Pengendalian penyakit hawar (lateblight) pada Kentang (Solanum tuberosum L.) melalui penerapan solarisasi tanah dan aplikasi agen hayati Trichoderma harzianum Eirene Brugman; Endang Dwi Purbajanti; Eny Fuskhah
Journal of Agro Complex Vol 1, No 2 (2017)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (193.775 KB) | DOI: 10.14710/joac.1.2.31-38

Abstract

The purpose of the research was to assess the effectiveness of soil solarization and biological agent Trichoderma harzianum application in controlling lateblight disease caused by Phytophthora infestans on potato. The experiment was assigned in a split plot design with soil solarization as main plot and the density of Trichoderma harzianum as sub-plot. Soil solarization treatment consisted of solarization (A1) and non-solarization (B1). Density of Trichoderma harzianum used is B1(control)= 0g, B2 = 10g (107 cfu/l), B3 = 20g (2 x 108 cfu/l), B4 = 30g (3 x 108 cfu/l) and B5 = 40 g (4 x 108 cfu/l). Soil solarization treatment is carried out by using transparent polyethylene sheets with a thickness of 45 µm. Parameters measured were soil temperature, intensity level of pathogen attack, the rate of infection and total yield. Data were subjected to ANOVA and followed by LSD test. Soil solarization for 4 weeks increase the soil temperature by 7,6oC and significantly increase the production of potato by 14.28%. Application of biological agent Trichoderma harzianum on level B4 30g (3 x 108 cfu /L) gives the best results in reducing the the intensity level of pathogen attack by 69.13% and the rate of disease infection into 1,012 unit/day. The results of this research may provide benefical information in the future for plant protection activities.   Keywords : P.infestans, Trichoderma harzianum, soil solarization, potato
Pengaruh pemberian pupuk anorganik dan organik diperkaya N, P organik terhadap serapan hara tanaman Selada (Lactuca sativa. L) Reyzhadi Neoriky; Dwi Retno Lukiwati; Florentina Kusmiyati
Journal of Agro Complex Vol 1, No 2 (2017)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.624 KB) | DOI: 10.14710/joac.1.2.72-77

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk anorganik dan pupuk organik diperkaya N, P organik terhadap penyerapan unsur hara tanaman selada. Penelitian ini menggunakan RAL monofaktor yang terdiri dari 9 perlakuan dengan 3 ulangan. Perlakuan pupuk yaitu urea (T1), TSP (T2), urea + TSP (T4), Pupuk kandang (pukan) (T4), Pukan + gamal (T5), Pupuk kandang + BP (T6), pukan + guano(T7), Pukan + BP + gamal (T8), dan pukan + guano + gamal (T9). Perlakuan diulang sebanyak 3 kali. Parameter yang diamati adalah berat kering, rasio tajuk akar, serapan nitrogen, dan serapan fosfor. Data analisis ragam dilanjutkan uji duncan menunjukan pupuk organik mampu meningkatkan separan hara tanaman setara pupuk anorganik. Perlakuan yang diberikan pada parameter rasio tajuk akar tertinggi didapat pada perlakuan T5. Sedangkan, parameter berat kering, serapan hara N dan P tertinggi didapat pada perlakuan T8. Pemberian perlakuan pukan, BP, dan gamal memberikan hasil terbaik terhadap penyerapan unsur haraKata kunci : selada, anorganik, organik, nitrogen, fosfor
Karakteristik morfologi dan sitologi tanaman Sutra Bombay (Portulaca grandiflora Hook) hasil poliploidisasi dengan kolkisin pada berbagai konsentrasi dan frekuensi aplikasi Betty Perdana Sari; Karno Karno; Syaiful Anwar
Journal of Agro Complex Vol 1, No 2 (2017)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2154.457 KB) | DOI: 10.14710/joac.1.2.39-48

Abstract

Moss Rose (Portulaca grandiflora Hook) is one of the ornamental plants and medicinal plants. The purpose of this research was to evaluate cytological and morphological responses of Moss Rose (Portulaca grandiflora) with colcichine treatment. Colcichine treatment was done with drop method technique in different concentrations and different frequency of application. This research used Completely Randomized Design in 4x3 factorial arrangement and used descriptive analysis to compare diploid plant and tetraploid plant characters. The first factor was variation of cholcichine concentration which were K0 (0%), K1 (0.1%), K2 (0.3%), and K3 (0.6%). The second factor was variation of application frequency which were A1 (2 drop per day for a day), A2 (2 drop per day for 2 days), and A3 (2 drop per day for 3 days). The observed parameters were shoot response by colcichine treatment, number of chromosomes, length and width of stomata, stomata density, stem diameter, flower diameter, plant high, fresh weight, number of branches, and number of leaves. The result showed that Moss Rose’s shoot was intolerant with colcichine treatment in high concentration and long time application. The tetraploid plants was randomly produced by a number of treatment which were 0.1% colcichine 2 drops for 3 days, 0.3% colcichine 2 drops for 2 days, 0.6% colcichine 2 drops for 2 days, and 0.6% colcichine 2 drops for 3 days. The shoot’s growth was inhibited. The induced of tetraploid plant in Moss Rose was accompanied by double chromosome number as 2n=4x=36, larger stomata (length and width), lower stomata density, and higher morphological characters. Moss Rose (Portulaca grandiflora Hook) is one of the ornamental plants and medicinal plants. The purpose of this research was to evaluate cytological and morphological responses of Moss Rose (Portulaca grandiflora) with colcichine treatment. Colcichine treatment was done with drop method technique in different concentrations and different frequency of application. This research used Completely Randomized Design in 4x3 factorial arrangement and used descriptive analysis to compare diploid plant and tetraploid plant characters. The first factor was variation of cholcichine concentration which were K0 (0%), K1 (0.1%), K2 (0.3%), and K3 (0.6%). The second factor was variation of application frequency which were A1 (2 drop per day for a day), A2 (2 drop per day for 2 days), and A3 (2 drop per day for 3 days). The observed parameters were shoot response by colcichine treatment, number of chromosomes, length and width of stomata, stomata density, stem diameter, flower diameter, plant high, fresh weight, number of branches, and number of leaves. The result showed that Moss Rose’s shoot was intolerant with colcichine treatment in high concentration and long time application. The tetraploid plants was randomly produced by a number of treatment which were 0.1% colcichine 2 drops for 3 days, 0.3% colcichine 2 drops for 2 days, 0.6% colcichine 2 drops for 2 days, and 0.6% colcichine 2 drops for 3 days. The shoot’s growth was inhibited. The induced of tetraploid plant in Moss Rose was accompanied by double chromosome number as 2n=4x=36, larger stomata (length and width), lower stomata density, and higher morphological characters. 
Pertumbuhan dan Produksi Okra (Abelmoschus esculentus L.) pada Level Pemupukan dan Jarak Tanam yang Berbeda Jessica Raditya; Endang Dwi Purbajanti; Widyati Slamet
Journal of Agro Complex Vol 1, No 2 (2017)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (162.812 KB) | DOI: 10.14710/joac.1.2.49-56

Abstract

This research aimed to study the growth and yield of Okra at different nitrogen fertilizer levels and plant spacing. The experiment was assigned in a completely randomized factorial design with plant spacing (50x50 and 50x75 cm) as the first factor and nitrogen fertilizer level (0, 50, 100, 150 kg N/ha) as the second factor. Each treatments was repeated three times. Parameters measured were stem diameter, number of leaves, number of fruits per plot, and weight of fruits per plot. Data were subjected to ANOVA and followed by Duncan’s Multiple Range Test (DMRT). The result showed that adding 50 kg N/ha increased stem diameter and number of leaves. The treatment of 50x50 cm spacing and 150 kg N/ha dose had the highest number of fruits per plot and weight of fruits per plot, and significantly different with 0 kg N/ha dose treatment in all parameters.
Pengaruh sistem tanam dan pupuk organik terhadap karakter agronomi turi dan rumput benggala pada tanah salin Rokhimun Tolib; Florentina Kusmiyati; Dwi Retno Lukiwati
Journal of Agro Complex Vol 1, No 2 (2017)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.181 KB) | DOI: 10.14710/joac.1.2.57-64

Abstract

Penelitian bertujuan untuk mengkaji pengaruh sistem tanam serta dosis pupuk kandang terhadap karakter agronomi turi dan rumput benggala pada tanah salin. Salinitas tanah yang digunakan termasuk sedang, dengan daya hantar listrik 4,10 dS/m. Pupuk kandang (pukan) yang digunakan berasal dari ternak sapi. Rancangan percobaan yang digunakan, rancangan acak kelompok monofaktor terdiri dari 9 perlakuan dengan 3 kali ulangan, yaitu monokultur turi tanpa pukan (M1); monokultur turi + 10 ton pukan/ha (M2); monokultur turi + 20 ton pukan/ha (M3); tumpangsari turi dan rumput benggala + 0 ton pukan/ha (M4); tumpangsari turi dan rumput benggala + 10 ton pukan/ha (M5); tumpangsari turi dan rumput benggala + 20 ton pukan/ha (M6); monokultur rumput benggala tanpa pukan (M7); monokultur rumput benggala + 10 ton pukan/ha (M8); monokultur rumput benggala + 20 ton pukan/ha (M9). Hasil penelitian menunjukkan bahwa aplikasi pupuk kandang dengan dosis 10 ton/ha mampu meningkatkan jumlah daun, kadar klorofil a, kadar klorofil total, serta produksi bahan kering turi dan rumput benggala pada tanah salin. Sistem tanam tumpangsari mampu meningkatkan efisiensi penggunaan lahan. Kata kunci : Agronomi, sistem tanam, organik, turi, rumput benggala.

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