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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 18 Documents
 1   2 
Search results for , issue "Vol 6, No 2 (2018)" : 18 Documents clear
The Combination of Rice Water and BAP Enhances the Multiplication of Grammatophyllum speciosum Rineksane, Innaka Ageng; Nafiah, Siti Safitri; Dewi, Sukuriyati Susilo
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
The Study on The Seed Storability of Black Soybean (Glycine max L. Merrill) Intercropped with Sweet Sorghum (Sorghum bicolor L. Moench) Purwanti, Setyastuti; Immawati, Dhika Rizky; Prajitno, Djoko
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.2018.088.116-121

Abstract

The experiment was aimed to know how to maintain seed quality during storage by planting black soybean and sweet sorghum in row using an intercropping system. This experiment was conducted in the Laboratory of Seed Technology, Faculty of Agriculture, Gadjah Mada University, Yogyakarta, Indonesia, from November 2013 until April 2014. This experiment was single factor experiment arranged in CRD (Completely Randomized Design) with four treatments and four replications. The treatments consisted of monoculture of black soybean, intercropping between black soybean and sweet sorghum with various row ratios, i.e. 3:1, 4:1, and 6:1. The seeds were stored as many as 250 g for each treatment in hermetic plastic at normal temperature (27-28 ºC) for five months. Seed quality testing was performed every month. Data collected included moisture content, germination, vigor index and vigor hypotetical of the seeds. The result of this experiment showed that the quality of black soybean seeds yielded from intercropping with sweet sorghum gave the same effect compared to the black soy bean seeds yielded from monoculture. Seed quality of black soybean planted in intercropping and monoculture system could be well maintained until the fourth months of storage. 
Food Diversification of Cassava as Functional Food Instead of Rice in Lampung Arief, Ratna Wylis; Novitasari, Erliana; Asnawi, Robet
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.2018.081.62-69

Abstract

Cassava has been known to have low glycaemic index (GI) recommended for diabetics. Cassava can be used as alternative food source for substitution of rice as Indonesian staple food. The current study aimed to investigate phisycal and chemical properties of food diversification of cassava. Levels of dietary fibre were measured by enzymatic-gravimetric AOAC, while total sugar content was measured by Lane-Eynon titration. Determination of starch was observed by using spectrophotometer and energy analysis by bomb calorimetry. Level of glycaemic index (GI) was  determined by EL, S.N. method. The sensory analysis was performed by preference test by using hedonic scale towards 20 panelists. Analysis of cost and benefit was used to investigate the economic feasibility of the products. Among several products of cassava, analog rice has the highest value of dietary fibre (4.72%), starch (75.64%) and energy level (349.38 cal/kg).  In addition, it has the lowest value of total sugar content (1,19%) and GI (56).  It is also the most preferable in terms of colour (4.35), aroma (3.90), taste (4.35) and general acceptance (4.05). Economically, analog rice provides the highest profit than instant tiwul and oyek, which are 1.66; 1.56 and 1.47 respectively.
The Effects of Various Essential Oils as Antibacterial Agents on Fresh-Cut Apples cv. ‘Manalagi’ Utama, Nafi Ananda
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.2018.087.106-115

Abstract

The fast-paced lifestyle of modern consumers warrants the need for a quick and minimally processed food. For fresh products, this means healthy fresh food, convenient, and microbiologically safe food items produced with environmentally friendly methods. In this research, antimicrobial effects of carboxymethyl cellulose based-edible film containing different concentrations of essential oils (0.7 % cinnamon, 0.7 % lemongrass, 3 % lemon, and 0.1 % betel, w/v) as antibacterial agents on fresh-cut apples cv. Manalagi were studied. Measurements of weight loss, total titratable acidity (TTA), reducing sugar, microbial growth and sensory quality were determined at 0, 3, 6, 9, 12 and 15 days of storage (4 ± 1 °C, 75 ± 10 % RH). The results of the research showed that the application of 0.7% lemongrass oil on 1 % CMC gave the best result in inhibiting the bacterial growth and prolong the storage life of fresh-cut apples cv. Manalagi. The incorporation of 0.7 % (w/v) lemongrass and lemon 3 % (w/v) in coating formulation maintained the sensory scores (aroma and appearance) of fresh-cut apples during nine days of storage. 
Study on In Vitro Growth of Rubus fraxinifolius Mutant (m1) Resulted from Gamma-Ray Irradiation (60Co) Ismaini, Lily; Normasiwi, Suluh; Surya, Muhammad Imam; Destri, Destri
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.2018.082.70-76

Abstract

Rubus fraxinifolius belonging to the wild raspberry group has not been developed in Indonesia. Mutation breeding using gamma-ray as mutagen which was combined with in vitro culture is one of acceleration effort to obtain superior characteristics of the fruit crops, such as larger fruit size, higher nutrition content, plant with less of spines and fruit storage ability. The R. fraxinifolius seeds were irradiated with different doses of gamma-ray ranging from 0 to 500 Gy using the 60Co (Cobalt). This research aimed to determine in vitro growth of R. fraxinifolius mutant (M1) after irradiation using gamma-ray. The results showed that the highest percentage of seed germination was obtained on the doses of 100 and 200 Gy. Furthermore, the subculture of R. fraxinifolius mutant (M1) on MS medium with the addition of BA showed the different growth on number of shoots, number of leaves, and plantlet height. Moreover, R. fraxinifolius control showed higher value of shoots, number of leaves, and plantlet height at 4 and 8 weeks after subculture compared to R. fraxinifolius mutant. MS medium with the addition of IBA showed that the number of roots of R. fraxinifolius control (5.75) was higher than that of R. fraxinifolius mutant (M1) (4.83).
Comparison of destructive and non destructive method in maturity index of Garcia mangostana Prabasari, Indira
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.2018.086.100-105

Abstract

Postharvest maturity index for mangosteen (Garcinia mangostana L) is very important for picking and grading during postharvest processing. Skin color change is the primary maturity index for mangosteen. However, determination using human eyes needs many skilled labours and is inconsistent. Therefore, new method in image processing technology using SVM (Support Vector Machine) was employed in this study. Chemical analysis of mangosteen was performed and used as a reference of SVM method. The chemical analysis of mangosteen showed that anthocyanin content increased from 126.20 ppm at stage 1 to 213.98 ppm at stage 6. Reducing sugar content increased from 3.17% at stage 1 to 7.92% at stage 6. The same pattern was found for total soluble solid, an increase from 3.86% at stage 1 to 7.81% at stage 6. Whereas for total acid content and hardness the pattern was the opposite. Total acid content was decreased from 1.78% at stage 1 to 1.06% at stage 6 and the fruit hardness of mangosteen was also declined, showing the number from 4.30 N at stage 1 to 0.69 N at stage 6. For SVM method, image aquisition was conducted for mangosteen images from stage 1 to stage 6, followed by color feature extraction for each stages. The result was trained and tested using SVM and resulted accuracy level of 83.3%. 
Growth Performance of Mature Trees Resulted from Intra and Inter-specific Grafting on Robusta Coffee Evizal, Rusdi; Sugiatno, Sugiatno; Utomo, Setyo Dwi; Pujisiswanto, Hidayat; Widagdo, Setyo; Prasmatiwi, Fembriarti Erry; Stiawan, Aresta Dwi
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.2018.083.77-83

Abstract

To improve yield and cup quality, mature coffee tree as rootstock could be grafted with scion of selected genotype. This research aimed to study growth performance of mature trees resulted from intra and inter-specific grafting on Robusta coffee. The research was arranged in Randomized Complete Block Design with 3 replications. There were 12 treatments of entrees/under-stump genotype for coffee grafting including 8 treatments of intraspecific local Robusta/Robusta grafting and 4 treatments of interspecific coffee grafting of Robusta/Liberica and Arabica/Robusta. The results showed that intraspecific grafting of Robusta/Robusta, Robusta/Liberica, and Arabica/Robusta resulted in grafting mortality of 9.8%, 10.9%, and 24.8%, respectively. Until 28 weeks after grafting, branch growth variables were significantly affected by scion/rootstock of Robusta/Robusta, Robusta/Liberica, and Arabica/Robusta grafting. Grafted Arabica/Robusta coffee showed the poor growth performance. In second year of Robusta/Robusta and Robusta/Liberica growth, generative growth of cherry inflorescence per branch and number of cherries per inflorescence were not affected by scion and rootstock genotypes. Leaf and branch growth were very important variables correlating with other variables.
Physiological Aspects of Cauliflower Plants Affected by Fertigation Intervals and Doses of Various Inter - Season Soil Ameliorants in Coastal Sandy Land Junaedi, Mahbub; Saparso, Saparso; Rif'an, Muhamamad
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.2018.084.84-91

Abstract

Cauliflower is one of vegetable commodities mostly consumed. The study aimed to determine fertigation interval and application of soil ameliorants including the types, doses, and frequency that are appropriate for the growth and productivity of cauliflower plants in coastal sandy land. The research was carried out in the sandy beach area of Jetis, Banjarsari Village, Nusawungu District, Cilacap Regency from April 2017 to September 2017. The study was arranged in Randomized Complete Block Design (RCBD) factorial split plot. Data were analyzed by ANOVA followed by DMRT at 5 %. The results showed that (1) the fertigation interval did not significantly affect the growth, yield and physiology variables of cauliflower plants; (2) the frequency of soil ameliorants application had significant effect on the variable growth and yield of cauliflower plants. The application of soil ameliorants every season gave the best results compared to application every two seasons; (3) the application of soil ameliorants of Vertisol soil and manure could increase growth and yield variables compared but did not affect the physiology of cauliflower plants.
Front Matter Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 6 No. 2 Manager, Journal
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/planta tropika.v6i2.11285

Abstract

Back Matter Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 6 No. 2 Manager, Journal
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.v6i2.11286

Abstract

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