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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 427 Documents
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Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 5 No. 1 tropika, planta
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 5, No 1 (2017)
Publisher : Universitas Muhammadiyah Yogyakarta

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Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 3 No. 1 tropika, planta
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 3, No 1 (2015)
Publisher : Universitas Muhammadiyah Yogyakarta

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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.
Pengaruh Kerapatan Tanaman terhadap Pertumbuhan dan Hasil Benih Kentang (Solanum Tuberosum L.) Generasi Satu (G1) Varietas Granola Fatchullah, Deden
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 5, No 1 (2017)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2017.067.15-22

Abstract

The experiment was conducted in Experimental Research Station of Indonesian Institute for Vegetable Research (IIVR) at Cikole, Lembang city, West Bandung in September to December 2015. The research area was located in 1250 m above sea level with the type of soil is Andosol, and type of climate is B (Wet). The objective of this experiment was to find out the effect of plant spacing on the growth and the quality of potato seed (Solanum tuberosum L. var granola) of the first generation (G1). The experiment was arranged in a randomized block design (RBD) with a single factor. The treatment was 4 types of plant spacing: A1 (5 cm x 5 cm), A2 (6 cm x 6 cm), A3 (7 cm x 7 cm) and A4 (8 cm x 8 cm). The result showed that the plant spacing was significantly affecting on plant height and plant canopy at 21 days after planting (DAP), and percentage of germination at 63 DAP. It was determined that A1 plant spacing (5cm x 5cm) provide the highest plant (15.11 cm) and highest plant canopy (10.40 cm) at 21 DAP, and A4 plant spacing (8cm x 8cm) present the highest of a percentage of germination (27,34%).
Kajian Sebaran Humus, Alofan dan Senyawa Humus Kompleks Pada Tanah Andisol Kusmiyarti, Tati B.; Mega, M.; Dibia, N.; Widyarshana, D.O.
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 2 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i2.3119

Abstract

Humic substances (humus), allophanes and humus complexes are the soil component which have highly reactivity and give great contribution   on genesis and lead to presence  of specific chemical and physical properties of Andisols.  The study on humus, allophanes and humus complexes was conducted on Andisols in Tawangmangu Karanganyar District of Central Java and Bedugul, Tabanan District of Bali to observe the distribution of humus,  allophanes and humus complexes along the profile and the factor affected  its distribution. The result  showed  that the content of humus  complexes tend to decrease with the dept in accordance to the content of humus, on the contrary of the content of allophanes.  So the humus complexes are abundance on the upper layer whereas the allophanes on the lower layers of the profiles. By means of the regression calculation indicated  that both of the pH (H2O) of the soil and the content of humus are controlled the formation of humus complexes and I or allophanes along the profiles.
Pengendalian Hama Kelapa Larva Kumbang Badak (Oryctes rhinoceros, L.) Instar III Dengan Metarhizium anisopliae, Metch. yang Ditumbuhkan Pada Berbagai Macam Dedak Gandum Astuti, Agung; Sudarsono, Darmawan Suryo; Prabowo, Agus
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.v1i1.3108

Abstract

The research objectives were to observe the growth and spore production of Metarhizium anisopliae grown at wheat-pollard and wheat-brand and to test the M. anisopliae pathogenicity on instar III rhinoceros beetle larva of coconut pest (Oryctes rhinoceros, L.). The research were executed in 3 phases : (1) Regeneration phase of  M. anisopliae, the experiment was arranged in single factor CRD with 3 kinds of wheat and 3  replications. The influences of the treatments on biomass, spore number and spore viability were observed then; (2) lethal dosage (LD50) determination phase; and (3) phatogenicity test of M. anisopliae, the experiment was arranged in 3 x 3 factorial CRD, where the first factor was the kinds of wheat (i.e. Pollard, Brand and Pollard Brand) and the second factor was the dosage of biopesticide (i.e. 0,5 LD50 LD50  and 2 LD50). The phatogenicity testing was conducted to evaluate the effects on toxicity, mortality speed, and effication percentage. The result indicated that the wheat-brand was the better medium for M. Anisopliae than the pollard and the pollard-brand ones. The average spore number (1021,67 x 1014  spora/ml), biomass (95,94 g) and the viability (127,00 x 108 spora/ml) were significantly higher than the others.  The lethal dosage obtained was 6,70g to gave the mortality percentage (73,33 %) and the effication percentage (73,33 %) significantly higher than the other treatments.
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
Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 4 No. 1 tropika, planta
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 4, No 1 (2016)
Publisher : Universitas Muhammadiyah Yogyakarta

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Pemberian Macam Konsorsium Bakteri Hasil Isolasi Tumbuhan Pantai pada Kangkung (Ipomoea reptans Poirs.) Aiman, Umul; Tantriati, Tantriati; Sriwijaya, Bambang
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 5, No 1 (2017)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2017.065.1-6

Abstract

Bacteria consortium isolated from coastal plant was used as Plant Growth Promoting Rhizobacteria (PGPR) which can improve the growth and yield of plant. The purpose of this research was to understand the effects of various bacteria consortium application on the growth and yield of water spinach. The research was conducted on June-September 2016 in Microbiology Laboratory, Agroindustry Laboratory and Agriculture Land, University of Mercu Buana Yogyakarta. The study used a single factor experiment with 16 treatments and 3 blocks which arranged using completely randomized design (CRD). The treatment was desinged by soaking the water spinach seed on the various PGPR consorcium. All treatments were control (seed soaking on the water or without PGPR), the seed soaking on the various PGPR consorsium including K2, K9, K15, C7, K2K9, K2K15, K2C7, K9K15, K9C7, K15C7, K2K9K15, K2K9C7, K9K15C7, K2K15C7, and K2K9K15C7. The economic weight of water spinach which soaking on K2K9K15C7 consorcium was the best treatments compare to other treatments. Application of single isolate including K2, K9, K15, C7 and rhizobacteria consortium including K2K9, K2K15, K2C7, K9K15, K9C7, K15C7, K2K9K15, K2K9C7, K9K15C7, K2K15C7 can improved the yield of water spinach compare to the treatment without application of rhizobacteria.
Planta Tropika: Jurnal Agrosains (Journal of Agro Science) Vol. 1 No. 2 tropika, planta
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 2 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i2.3124

Abstract

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