cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. bantul,
Daerah istimewa yogyakarta
INDONESIA
Planta Tropika
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 0216499X     EISSN : 25287079     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
PLANTA TROPIKA : Jurnal Agrosains (Journal of Agro Science) provides a forum for researchers on applied agricultural science to publish the original articles. PLANTA TROPIKA published two times a year (February and August) by Universitas Muhammadiyah Yogyakarta in collaboration with Indonesian Association of Agrotechnology / Agroecotechnology (PAGI). Planta Tropika focuses related to various themes, topics and aspects including (but not limited) to the following topics Agro-Biotechnology, Plant Breeding, Agriculture Waste Management, Plant Protection, Soil Science, Post Harvest Science and Technology, Horticulture.
Arjuna Subject : -
Articles 427 Documents
 21   22   23   24   25 
Karakteristik Kimiawi Kompos Enceng Gondok dan Jerami Hasil Dekomposisi Dengan Aktivator Alami dan Buatan Nike Triwahyuningsih
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 1 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i1.3109

Abstract

A research to study the chemical properties of hyacinth- and straw-compost decomposed by natural and artificial activators was conducted at the Research Field of Faculty of Agriculture, Muhammadiyah University of Yogyakarta. Cow manure was used as natural activator, while Stardec (powdered) and EM4 (liquid) as artificial ones. The treatment was arranged in 2x3 factorial completely randomized design. The hyacinth and straw organic sources were decomposed by cow manure, Stardec and EM4 activators. Organic matters were incubated for 5-6 weeks then pH, C-organic, N-total, available P and K, CEC, and the .exchngeable  Ca,  K and Mg were measured. The results showed that the hyacinth-compost had the better maturity according to the C/N ratio (C/N20) than the straw-compost (C/N20), but the two kinds of compost had the moderate mature rate of humic substances.  The straw-compost had better quality though as shown in its higher available phosphorus and excheangable potassium, especially when decomposed by EM4 artificial activator. Application of artificial activators Stardec and EM4 enhanced the maturity rate of hyacinth-compost.
Growth And Yield Of Lettuce (Lactuca sativa L.) Under Organic Cultivation Mujiono Mujiono; Suyono Suyono; Purwanto Purwanto
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 5, No 2 (2017)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2017.073.127-131

Abstract

This research was aimed to know selected assemblies of technology in organic lettuce cultivation based on liquid organic fertilizer and selected botanical pesticide.  It used a Complete Randomized design (CRD) with two treatments and 16 replicates.  The treatments were P1 (goat manure + SO-Kontan LQ soil Liquid Organic Fertilizer (LOF) (6 ml/l) + combined SO-Kontan Fert leaf LOF (6 ml/l) + maja-gadung botanical pesticide (6%) + biological agent Trichoderma harzianum (10 g/plant) and P2 (goat manure + SO-Kontan LQ soil LOF Lq (6 ml/l) + combined SO-Kontan Fert leaf LOF (6 ml/l) + maja-gadung botanical pesticide (6%) + bamboo leaves + biological agent Trichoderma harzianum (10 g/plant).  Results of the research performed that the P2 assembly was more superior than P1 for all variables of growth and yield, except the green color of leaves.  The technology assembly in the organic lettuce cultivation based on LOF and selected botanical pesticide was the P2 (goat manure + SO-Kontan LQ soil LOF Lq (6 ml/l) + combined SO-Kontan Fert leaf LOF (6 ml/l) + maja-gadung botanical pesticide (6%) + bamboo leaves + biological agent of Trichoderma harzianum (10 g/polybag) resulted in the productivity of 87.17 g per plant.
The Combination of Rice Water and BAP Enhances the Multiplication of Grammatophyllum speciosum Innaka Ageng Rineksane; Siti Safitri Nafiah; Sukuriyati Susilo Dewi
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 2 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.085.92-99

Abstract

Grammatophyllum speciosum is the largest orchid species which lives epiphytically on the trees in the forest. The rate of natural propagation of Grammatophyllum speciosum is very slow. The objective of the research was to determine the effect and the best concentration of rice water and BAP for the multiplication of Grammatophyllum speciosum shoots. The research was a single factor experiment arranged in Completely Randomized Design with several types of multiplication media as treatments. The treatments were MS + 0.5 mg/l BAP, ½ MS + 25% rice water + 0.5 mg/l BAP, ½ MS + 50% rice water + 0.5 mg/l BAP, ½ MS + 75% rice water + 0.5 mg/l BAP, ½ MS + 100% rice water + 0.5 mg/l BAP, MS + 1 mg/l BAP, ½ MS + 25% rice water + 1 mg/l BAP, ½ MS + 50% rice water + 1 mg/l BAP, ½ MS + 75% rice water + 1 mg/l BAP, and ½ MS + 100% rice water + 1 mg/l BAP. Each treatment was replicated ten times. Variables observed in this study were survival rate, browning rate, contamination rate, the percentage of explants sprouting, the increase of shoot height, number of shoots and leaves, the percentage of rooted explants and the number of roots. The data were analyzed by using Analysis of Variance at α=5%. The results showed that various concentrations of rice water and BAP were able to multiply the shoots and affect the shoot growth and root length of Grammatophyllum speciosum. The combination of 75% rice water + 1 mg/l BAP on ½ MS medium was the best treatment for Grammatophyllum speciosum multiplication
Effects of Plant Media And Fertilization on The Growth of Orchid Plant (dendrobium sylvanum rchb. F.) in Acclimatization Phase Sucipto Hariyanto; Ahmad Ridlwan Jamil; Hery Purnobasuki
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 7, No 1 (2019)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2019.095.66-72

Abstract

This study was to evaluate the effect of plant media variation, time of fertilization, and combination of both on the growth of orchid plant Dendrobium sylvanum Rchb. f. in acclimatization phase. This study was designed using 6x4 factorial experimentation. The first factor was the variation of plant media: charcoals, coconut husk, bagasse, mixing of charcoal and coconut husk, combination of charcoal and bagasse, combination of coconut husk and bagasse. The second factor was fertilization time: no fertilization, 7 day-fertilization, 14 day-fertilization, and 20 day-fertilization for three months. The data were analysed by using Two Way MANOVA (α = 5%) and Duncan test. Based on the results, there were differences between media variation and fertilization time on the increase of leaf length and width, stem diameter, and root length of Dendrobium orchid in acclimatization phase. Combination of bagasse and coconut husk media showed the best result on media treatment. The best of fertilization time was 14 days. Moreover, the best of interaction between media and fertilization time showed by the combination of bagasse and coconut husk with 14 days-fertilization.
Peel Ultrastructure During Developmental Stages of Citrus Sinensis (L.) Osbeck. Indira Prabasari
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 2, No 1 (2014)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2014.017.1-6

Abstract

The peel structureof Valencia orange (Citrus sinensis (L.) Osbeck) was examined using Scanning Electron Microscopy (SEM) and showed the distinct regions of the peel: the outer-yellowish part that was called the flavedo and the inner part of the peel that was called the albedo.  The flavedo has compact cells with oil glands embedded in it whereas the albedo contains of spongy cells with vascular bundles embedded in it. The ultrastructural examination of the albedo during development revealed the changes of albedo morphology from compact tissue to the loosely arranged tissue. In addition, the distribution of polysaccharide cell walls was observed with histochemical staining and later the distribution of peptic polysaccharide was conducted using anti-pectin monoclonal antibodies (mAbs). Histochemical staining during development demonstrated the difference of abundance of polysaccharide at the tissue level.  Furthermore, the distribution of homogalacturonan (HG) was studied with mAb JIM5 that recognizes low methyl-esterified HG and JJM7 which labels high methyl-esterified HG. The observation at the fruit level was conducted using tissue printing and the result showed that low and high methyl-esterified HG was distributed almost similar at the fruit level. Further experiment at the tissue level was performed using Light Microscopy (LM) and revealed that HG was found more abundant in the albedo and vascular bundle followed by the flavedo and oil gland.
New Promising Rice Genotypes of SP87-1-1-2 and SP73-3-17 Adaptive to Lowland and Medium Land Hasan, Fitri Utami; Sari, Santika; Zubair, Anas; Carsono, Nono
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 8, No 1 (2020)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2020.110.21-32

Abstract

High yield potential (more than 8 ton ha-1), resistant to pest and disease, adaptive to specific or broad environment and good palatability are among rice traits preferred by farmers and consumers. In order to develop such superior rice, yield testing at different agro-climates for some promising lines bred is necessary. This study aimed to examine selected rice genotypes in two different environments, namely Indramayu (9m asl) and Jatinangor (752m asl) and to obtain environment factors affecting the plant trait variation. The experiment was conducted during dry season with fifteen F5 genotypes, arranged in an augmented design. Based on Least Significant Increase (LSI), genotypes showing better performance than checks were SP87-1-1 on number of productive tillers and total grain weight, SP73-3-1 on panicle length, total grain weight, and weight of 1000 grains. Meanwhile, SP46-4-1 and SP87-4-1 showed better number of filled grains than checks in Indramayu. There was no genotype performing higher number of empty grains than that of the checks. Based on the Principal Component Analysis (PCA), altitude contributed to high variation of plant traits. SP87-1-1 and SP73-3-1 are recommended to be grown in medium and lowland ecosystems because they have high productivity in both environments.
Pengaruh Kombinasi Komposisi Media Organik dan Konsentrasi Nutrisi terhadap Daya Hasil Tanaman Melon (Cucumis melo L.) Khoirul Bariyyah; Sigit Suparjono; Usmadi Usmadi
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 3, No 2 (2015)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2015.041.67-72

Abstract

This research was addressed to study the effect of plant growth media composition and nutrients concentration on yield of Cucumis melo L. The research was designed in complete factorial test of 4x4 with three replicates. Mixed growth media of bokashi:cocopeat:husk charcoal were tested in four compositions, i.e. 90%:5%:5% (M1), 80%:10%:10%(M2), 70%:15%:15% (M3) and 60%:20%:20% (M4) respectively. The other tested factor was nutrients concentraion that consists of four levels, i.e. control/no nutrient given (K0), 2 g/L (K1), 4 g/L (K2) and 6 g/L (K3). The Action 434 variety of Cucumis melo L. seedlings were then transplanted into 10 kg’s polybag and allowed to grow till harvested. The results showed that Chlorophyll content of M1 plants were higher than others, but the highest sugar content was resulted by M3 plants, and the highest thick of flesh fruit was resulted by interaction 60% bokashi:20% cocopeat:20% husk charcoal with 4 g/L nutrient concentration.
Back Matter Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 6 No. 2 Manager, Journal
PLANTA TROPIKA Vol 6, No 2 (2018)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v6i2.11286

Abstract

Substitusi Medium Sintetik dengan Pupuk Daun, Air Kelapa dan Ekstrak Nabati pada Subkultur Anggrek Cattleya pastoral Innocence secara In Vitro Etty Handayani; Bambang Heri Isnawan
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 2, No 2 (2014)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2014.031.115-124

Abstract

A research was perfomed to find the proper of coconut water and natural ekstracts combined with Hyponex medium that compared with Vacin Went medium. This research has been done at Tissue Culture Laboratory, Agricultural Faculty, Universitas Muhammadiyah Yogyakarta. The method of this research was arranged in Randomized Complete Design with 9 treatments and 8 replications. The treatments were VW + NAA 0,5 ppm + BAP 3 ppm, green Hyponex 3 g/l, green Hyponex 3 g/l + bean sprouts 150 g/l, green Hyponex 3 g/l + tomatoes 150 ml/l, green Hyponex 3 g/l + avocado 150 g/l, red Hyponex 3 g/l, red Hyponex 3 g/l + bean sprouts 150 g/l, red Hyponex 3 g/l + tomatoes 150 ml/l, red Hyponex 3 g/l + avocado 150 g/l. The each of Hyponex mediums were given with bananas 150 g/l and coconut water 150 ml/l. The result of this research showed that Hyponex mediums combined with natural ekstract was not signicicantly with Vacin Went medium to high and shoot growth. Red Hyponex medium 3 g/l combined bananas 150 g/l and coconut water 150 ml/l resulted the best high, leaf and shoot in tissue culture Cattleya pastoral innocence orchid.
Texture Profile and Pectinase Activity in Tomato Fruit (Solanum Lycopersicum, Servo F1) at Different Maturity Stages and Storage Temperatures Angesom Asgele Gebregziabher; Supriyadi Supriyadi; Siwi Indarti; Lilis Setyowati
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 9, No 1 (2021)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v9i1.9139

Abstract

The demand for daily consumption of tomato fruit is increasing immensely. Nevertheless, the fruit is exposed to mechanical damage, shrinking, and softening as the maturity stages, handling, and storage are inappropriate, thereby affecting the texture. The study aimed to assess the texture profile, pectinase activity, and physicochemical parameters in tomato fruit at different maturity stages and storage temperatures. The fruits were harvested at 1-4 weeks after pollination and stored at a temperature of 16 ºC and 25ºC. There was an increase in the redness color (a*), TSS content, weight loss, respiration rate, and ethylene production, while the hardness, lightness color (L*), pH, and TA decreased with an increase in maturity stages at different storage temperatures. The higher Polygalacturonase (PG) and Pectin methylesterase (PME) enzyme activities were observed at 25 ºC compared to storage temperature of 16 ºC. It was confirmed that pectinase activity extremely affected the texture profile. For commercial purposes, it is suggested that tomatoes are harvested at 2nd and 3rd week after pollination for long distance transportation and at 4th week for fresh consumption and stored at a temperature of 16 °C. 

Page 23 of 43 | Total Record : 427

 21   22   23   24   25 

Filter by Year

2005 2025


Reset
Filter By Issues
All Issue Vol. 13 No. 1 (2025) Vol 12, No 2 (2024) Vol 12, No 1 (2024) Vol 11, No 2 (2023) Vol 11, No 1 (2023) Vol. 10 No. 2 (2022) Vol 10, No 2 (2022) Vol 10, No 1 (2022) Vol 9, No 2 (2021) Vol 9, No 1 (2021) Vol 8, No 2 (2020) Vol 8, No 1 (2020) Vol 7, No 2 (2019) Vol 7, No 1 (2019) Vol 6, No 2 (2018) Vol 6, No 2 (2018) Vol 6, No 1 (2018) Vol 5, No 2 (2017) Vol 5, No 2 (2017) Vol 5, No 1 (2017) Vol 5, No 1 (2017) Vol 4, No 2 (2016) Vol 4, No 2 (2016) Vol 4, No 1 (2016) Vol 4, No 1 (2016) Vol 3, No 2 (2015) Vol 3, No 2 (2015) Vol 3, No 1 (2015) Vol 3, No 1 (2015) Vol 2, No 2 (2014) Vol 2, No 2 (2014) Vol 2, No 1 (2014) Vol 2, No 1 (2014) Vol 1, No 2 (2005) Vol 1, No 1 (2005) More Issue