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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 8 Documents
 1 
Search results for , issue " Vol 5, No 2 (2017)" : 8 Documents clear
Effect of Foliar Liquid Organic Fertilizer to Increase Coconut Neera Production Purwanto, Purwanto; Mujiono, Mujiono; Tarjoko, Tarjoko
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.2017.070.106-109

Abstract

Coconut plant is the important estate plant to produce brown sugar from neera. Current condition, the neera production is low especially in dry season. The aim of this research was to study the effect of foliar liquid organic fertilizer to increase the coconut neera production in Kebumen Regency. This research was conducted in Coconut People’s Plantation Karanggadung Village PetanahanKebumen from Juli till October 2016. Randomized Completely block design with factorial treatments was used with 3 replications. The first factors was the dosage of liquid foliar fertilizer solution ie 250 mL plant-1 (d1), 500 mL plant-1 (d2), 750 mL plant-1 (d3), and 1000 mL plant-1 (d4). The second factor is interval time of application ie. 1 week (f1), 2 weeks (f2), 3 weeks (f3), and 4 weeks (f4). The observed variables were volume of neera production, pH of neera, sucrosa content, and leaf chlorophyll contents. The result showed that Application of foliar liquid organic fertilizer increase the leaf greenness at 80.55 SPAD unit at three weeks time interval, as reflected the total chlorophyll content. Fertilization of coconut plant with foliar liquid organic fertilizer increase the neera production about 15,32%, and the highest volume of neera was achieved at the dosage of foliar liquid organic fertilizer 750 mL plant-1 with the frequency of application three weeks.
The Effect of Intercropping System of Corn (Zea mays, L.) and Peanut (Arachis hypogaea, L.) on Yield Production in Ungaran Wibisana, Dharend Lingga; Budiyanto, Gunawan; Widyastuti, Titiek
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.2017.068.88-95

Abstract

The research was conducted to examine transfer nitrogen from peanut to corn and determine the best planting time of peanut and corn which were cultivated by intercropping system. The research was conducted at dryland of Ungaran Central Java from December 2015 to April 2016. This research was complated using an experimental design with single factor, arranged in completely randomized block design. The treatments were monoculture system of corn (J), monoculture system of peanut (K), intercropping system: corn was planted two weeks after peanut  (TS 1), intercropping system: peanut was planted two weeks after corn (TS 2), and intercropping system: corn and peanut were planted in the same time  (TS 3). Each treatment was replicated 3 times. The results showed that the transfer of nitrogen from peanuts to corn occured when the corn plants were in the stage of maximum vegetative growth. In this research, treatment TS 2 is the best planting time than other treatments as indicated by the yield of 4.02 tonnes corn per hectare.
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.
Phylogenetic Relationships of Nine Cultivars of Strawberries (Fragaria spp.) Based on Anatomical and Morphological Characters Kasiamdari, Rina Sri; Aristya, Ganies Riza; Inayati, Evi
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.2017.072.116-126

Abstract

Strawberry cultivation in Indonesia is centred at Citrus and Subtropical Fruit Research Institute, which collects different cultivars of Fragaria spp. Information on classification based on phenotypic characters of Fragaria spp. has not been studied as a whole. The purpose of the present study was to identify and determine phylogenic relationships of nine cultivars of strawberries based on the anatomical and morphological characters. The present study identified morphologically nine strawberry cultivars by referring to the IPGRI (1986) and the UPOV (2012) and Hofer et al. (2012). Anatomical preparations of roots, stems and leaves were made by the embedding method. Phylogenetic relationships were determined using MVSP software with UPGMA algorithm through the Gower General Similarity Coefficient method. Subsequently, the principal components were analyzed using the Euclidian Biplots algorithm depicted in a Scatter plot. Results showed that there were 37 anatomical and morphological characters that play a role in the characterization of nine cultivars (25 synthetic characters and 12 diagnostics characters) where the shape of the fruit and type of attachment of the flowers were the main characters distinguishing among the nine cultivars studied. The phylogenetic relationship produced two clusters with 79% similarity index. The closely related cultivars were Festival and Rosa Linda with a similarity index of 94%, and Earlibrite and Aerut with a similarity index of 86%
Application of Jatropha Rind Compost as K Source in The Sweet Corn (Zea mays saccharata Sturt.) Cultivation Arrasyid, Bagus; Budiyanto, Gunawan; Widyastuti, Titiek
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.2017.067.79-87

Abstract

Potassium is one of important soil nutrients. The content of potassium in the jatropha rind compost is quite high reaching 11.36%. The high content of potassium in the jatropha rind has potential to increase the productivity and fulfill the needs of soil nutrients in the cultivation process. The research aims to study the influence of jatropha rind compost as substitute KCl fertilizer on sweet corn (Zea mays saccharata Sturt.), and get the proper rate of the compost for increasing the growth and yield of sweet corn. This research was conducted using an experimental method with a single factor that was arranged in a completely randomized design. Treatments were combination of jatropha rind compost and KCl rate, consisting of four levels, 250 kg KCl/hectare + 0 KJP kg/hectare, 125 kg KCl/hectare + KJP 273.89 kg/hectare, 62.5 kg KCl/hectare + KJP 410.84 kg/hectare, 0 kg KCl/hectare + KJP 547.79 kg/hectare. Each treatment was replicated 3 times so that there were 12 experimental units and each unit consisting of three plants trial so that there were 36 plants. Each plot of the experimental unit was fertilized using manure 20 ton/hectare, urea 400 kg/hectare which was applied 2 times and SP-36 300 kg/hectare. Results indicate that the treatment of mix dose of compost rind jatropha and KCl does not affect significantly on growth and yield of sweet corn. Sweet corn plants fertilized with jatropha rind compost with the dose of 547.79 kg/ha had the same growth and yield those of 250 kg/ha KCl. The study concluded that jatropha rind compost can replace KCl fertilizer.
Whitefly Infestation and Economic Comparison of Two Different Pest Control Methods on Soybean Production Murgianto, Fitrah; Hidayat, Purnama
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.2017.071.110-115

Abstract

Insecticide application is a common practice done by farmers to control the whitefly Bemisia tabaci. While the use of insecticide can suppress the whitefly population, the cost of soybean production is also increased. The objective of this research was to compare the whitefly infestation and economic of two whitefly control methods on soybean production.Two sets of experiments were done, one set with insecticide application and another one without insecticide application. Ten soybean cultivars were used in each set of experiment with completely randomized design and three replications.The whitefly infestation was observed weekly on sample plants on each plot. The benefit and R/C ratio were calculated based on revenue and total costs of soybean production. The average whitefly (egg and nymphs) population on the plots with insecticide application was 4.95 for egg and 5.72 for nymph per leaf, which was lower than those without insecticide application 11.76 for egg and 10.86 for nymph per leaf. The average benefit and R/C ratio for the plots with insecticide application were IDR 9,654,507/ha and 1.51 respectively, while the average benefit and R/C ratio for the plots without insecticide application were IDR 8,706,299/ha and 1.55 respectively. The study can be concluded thatgrowing soybean without insecticide treatmentwas more efficient than growing soybean with insecticide applications
Perbedaan Sifat Fisik, Kimia dan Sensoris Tepung Umbi Suweg (Amorphophallus campamulatus BI) pada Fase Dorman dan Vegetatif Hasbullah, Umar Hafidz Asy’ari; Umiyati, Rini
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.2017.066.70-78

Abstract

This study aims to determine ofdifferences in physical, chemical and sensory properties of suweg flour from the dormant and vegetative phases. Physical parameters include yield, edible portion, bulk density, brightness, particle size index, water absorption index and water solubility index. Chemical parameters include the moisture, ash, fat, protein, carbohydrates, starches and sugars reduction. Sensory parameters include hedonic test of color and aroma as well as descriptive test of color and aroma. The results showed that the physical characteristics of flour suweg dormant phase and vegetative phase significantly different at all parameters. Yield, edible portion, bulk density, brightness, particle size index of dorman phase higher than vegetative phase. Chemical characteristics from dormant phase and vegetative phase were significantly different at all parameters, except fat and carbohydrate. Starch contain in dorman phase higher than vegetative phase. But in contrast to the sugar reduction contain. Panellists assess the suweg flour produced from the vegetative phase has a more brown color and smells stronger than the dormant phase so it is less preferred color and aroma. Suweg flour should be selected from the dormant phase. Utilization of flour suweg is recommended for products such as cookies and biscuits that can be grown ingredients to cover the presence of brown and off flavor.
Application of Cow Rumen Liquid in Palm Sugar Waste Compost for Cultivating Sweet Corn in Coastal Sandy Soil of Samas Beach Bantul Larasati, Nadia Dwi; Budiyanto, Gunawan; Widyastuti, Titiek
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.2017.069.96-105

Abstract

The research was conducted to study the effect of palm sugar waste compost using cow rumen activator on sweet corn cultivation and to determine the effective concentration of cow rumen activator and dose of sugar palm waste compost for sweet corn cultivation in coastal sandy soil of Samas Beach, Bantul. The research was arranged in Completely Randomized Design (CRD). A total of 11 treatments consisting of combination between the dose of sugar palm waste compost (tonnes/hectare) and various concentrations of cow rumen activators (%), with detail as follows: (1) 20 tonnes/hectare and 60%, (2) 20 tonnes/hectare and 70%, (3) 20 tonnes /hectare and 80%, (4) 20 tonnes/hectare and 90%, (5) 20 tonnes /hectare and 100%, (6) 25 tonnes/hectare and 60%, (7) 25 tonnes/hectare and 70%, (8) 25 tonnes/hectare and 80%, (9) 25 tonnes/hectare and 90%, (10) 25 tonnes/hectare and 100%,  and (11) 20 tonnes/hectare of inorganic fertilizer. Each treatment was replicated four times. The results showed that the treatments of sugar palm waste compost with various concentrations of cow rumen activator and commercial compost had no significant effect on almost all plant parameters, except the root fresh weight. In addition, sugar palm waste compost with various concentration of cow rumen activator produced higher fresh weight of ear with husk compared to the potential yield of Sweet Boy variety. Dose of 20 tonnes/hectare of sugar palm waste compost with cow rumen activator at a concentration of 60% is the most effective treatment for sweet corn cultivation in coastal sandy soil of Samas Beach, Bantul.

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